Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(Mark One)


☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2023


☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to .

Commission file number: 001-33876

Athersys, Inc.

(Exact name of registrant as specified in its charter)


Delaware						20-4864095
(State or other jurisdiction of incorporation or organization)						(I.R.S. Employer Identification No.)

3201 Carnegie Avenue,

Cleveland,

Ohio

44115-2634

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (216) 431-9900

Former name, former address and former fiscal year, if changed since last report: Not Applicable

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, par value $0.001 per share	ATHX	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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Large accelerated filer

☐

Accelerated filer

☐

Non-accelerated filer

☒

Smaller reporting company

☒

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒

The number of outstanding shares of the registrant’s common stock, $0.001 par value, as of August 9, 2023 was 22,501,410.

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ATHERSYS, INC.

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CAUTIONARY NOTE ON FORWARD-LOOKING STATEMENTS		4
PART I. FINANCIAL INFORMATION
ITEM 1.	Financial Statements	6
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	20
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk	29
ITEM 4.	Controls and Procedures	29
PART II. OTHER INFORMATION
ITEM 1.	Legal Proceedings	29
ITEM 1A.	Risk Factors	29
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds	32
ITEM 3.	Defaults Upon Senior Securities	32
ITEM 4.	Mine Safety Disclosures	32
ITEM 5.	Other Information	32
ITEM 6.	Exhibits	32
SIGNATURES

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CAUTIONARY NOTE ON FORWARD-LOOKING STATEMENTS

This Quarterly Report on Form 10-Q (this “Quarterly Report”) contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties. These forward-looking statements relate to, among other things, the timing of initiation of new clinical sites and patient enrollment in our clinical trials, the expected timetable for development of our product candidates, our growth strategy, and our future financial performance, including our operations, economic performance, financial condition, prospects, and other future events. We have attempted to identify forward-looking statements by using such words as “anticipates,” “believes,” “can,” “continue,” “could,” “estimates,” “expects,” “intends,” “may,” “plans,” “potential,” “should,” “suggest,” “will,” or other similar expressions. These forward-looking statements are only predictions and are largely based on our current expectations. These forward-looking statements appear in a number of places in this Quarterly Report.

In addition, a number of known and unknown risks, uncertainties, and other factors could affect the accuracy of these statements. Some of the more significant known risks that we face are the risks and uncertainties inherent in the process of discovering, developing, and commercializing products that are safe and effective for use as therapeutics, including the uncertainty regarding market acceptance of our product candidates and our ability to generate revenues. The following risks and uncertainties may cause our actual results, levels of activity, performance, or achievements to differ materially from any future results, levels of activity, performance, or achievements expressed or implied by these forward-looking statements:

•our ability to raise capital to fund our operations in the near term and long term, including our ability to obtain funding through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources, on terms acceptable to us or at all, and to continue as a going concern;

•our collaborators’ ability and willingness to continue to fulfill their obligations under the terms of our collaboration agreements and generate sales related to our technologies;

•the possibility of unfavorable results from ongoing and additional clinical trials involving MultiStem;

•the risk that positive results in a clinical trial may not be replicated in subsequent or confirmatory trials or success in an early stage clinical trial may not be predictive of results in later stage or large scale clinical trials;

•our ability to regain compliance with the requirement to maintain a minimum market value of listed securities of $35 million as set forth in Nasdaq Listing Rule 5550(b)(2);

•our ability to regain compliance with the requirement to maintain a minimum closing bid price of $1.00 per share as set forth in Nasdaq Listing Rule 5550(a)(2);

•the timing and nature of results from MultiStem clinical trials, including the MASTERS-2 Phase 3 clinical trial evaluating the administration of MultiStem for the treatment of ischemic stroke;

•our ability to meet milestones and earn royalties under our collaboration agreements, including the success of our collaboration with Healios;

•the success of our MACOVIA clinical trial evaluating the administration of MultiStem for the treatment of ARDS induced by COVID-19 and other pathogens, and the MATRICS-1 clinical trial being conducted with UT Health evaluating the treatment of patients with serious traumatic injuries;

•the availability of product sufficient to meet our clinical needs and potential commercial demand following any approval;

•the possibility of delays in, adverse results of, and excessive costs of the development process;

•our ability to successfully initiate and complete clinical trials of our product candidates;

•the possibility of delays, work stoppages or interruptions in manufacturing by third parties or us, such as due to material supply constraints, contamination, operational restrictions due to COVID-19 or other public health emergencies, labor constraints, regulatory issues or other factors that could negatively impact our trials and the trials of our collaborators;

•uncertainty regarding market acceptance of our product candidates and our ability to generate revenues, including MultiStem cell therapy for neurological, inflammatory and immune, cardiovascular and other critical care indications;

•changes in external market factors;

•changes in our industry’s overall performance;

•changes in our business strategy;

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•our ability to protect and defend our intellectual property and related business operations, including the successful prosecution of our patent applications and enforcement of our patent rights, and operate our business in an environment of rapid technology and intellectual property development;

•our possible inability to realize commercially valuable discoveries in our collaborations with pharmaceutical and other biotechnology companies;

•the success of our efforts to enter into new strategic partnerships and advance our programs;

•our possible inability to execute our strategy due to changes in our industry or the economy generally;

•changes in productivity and reliability of suppliers;

•the success of our competitors and the emergence of new competitors; and

•the risks mentioned elsewhere in our Annual Report on Form 10-K for the year ended December 31, 2023 under Item 1A, “Risk Factors.” and in our other filings with the SEC.

Any forward-looking statements in this Quarterly Report reflect our current views with respect to future events and is subject to these and other risks, uncertainties and assumptions relating to our operations, operating results, growth strategy and liquidity. Although we currently believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee our future results, levels of activity or performance. You should not place undue reliance on these forward-looking statements because such statements speak only as of the date when made. We undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise, except as otherwise required by law. You are advised, however, to consult any further disclosures we make on related subjects in our reports on Forms 10-Q, 8-K and 10-K filed or furnished to the SEC. You should understand that it is not possible to predict or identify all risk factors. Consequently, you should not consider any such list to be a complete set of all potential risks or uncertainties.

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements.

Athersys, Inc.

Condensed Consolidated Balance Sheets

(In thousands, except share and per share data)


	June 30, 2023		December 31, 2022
	(Unaudited)
Assets
Current assets:
Cash and cash equivalents	$	1,803	$	9,038
Accounts receivable from Healios	664		716

Prepaid clinical trial costs	—		2,747
Prepaid expenses and other	1,225		1,034


Total current assets	3,692		13,535
Operating right-of-use assets, net	38		7,846
Property and equipment, net	4,633		4,214
Deposits and other	2,114		2,136
Total assets	$	10,477	$	27,731
Liabilities and stockholders’ equity
Current liabilities:
Accounts payable	$	8,701	$	27,765

Deferred accounts payable to Supplier	7,862		—
Operating lease liabilities, current	8,390		746
Accrued compensation and related benefits	419		1,090
Accrued clinical trial related costs	364		7,231
Accrued expenses and other	1,321		1,078




Note Payable	15,640		—
Warrant liability	—		534
Total current liabilities	42,697		38,444
Operating lease liabilities, non-current	—		7,939
Advance from Healios	5,199		5,199

Stockholders’ equity:
Preferred stock, at stated value; 10,000,000 shares authorized, and no shares issued and outstanding at June 30, 2023 and December 31, 2022	—		—
Common stock, $0.001 par value; 600,000,000 shares authorized with 21,833,847 and 17,986,147 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	21		18
Additional paid-in capital	639,173		632,009
Accumulated deficit	(676,613)		(655,878)
Total stockholders’ equity (deficit)	(37,419)		(23,851)
Total liabilities and stockholders’ equity	10,477		27,731

See accompanying notes to unaudited condensed consolidated financial statements.

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Athersys, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss

(In thousands, except per share data)

(Unaudited)


	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Revenues
Contract revenue from Healios	$	49	$	2,316	$	49	$	5,228
Total revenues	49		2,316		49		5,228
Costs and expenses
Research and development	10,649		20,794		15,116		41,738
General and administrative	2,345		5,162		5,160		9,261
Depreciation	43		618		95		865
Total costs and expenses	13,037		26,574		20,371		51,864

Loss from operations	(12,988)		(24,258)		(20,322)		(46,636)

Other (expense) income, net1	64		610		(413)		772
Net loss and comprehensive loss	$	(12,924)	$	(23,648)	$	(20,735)	$	(45,864)
Net loss per share, basic and diluted	$	(0.62)	$	(2.28)	$	(1.06)	$	(4.55)
Weighted average shares outstanding, basic and diluted	20,700		10,383		19,502		10,077

See accompanying notes to unaudited condensed consolidated financial statements.

1 See Footnote 10 for components of other (expense) income, net

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Athersys, Inc.

Condensed Consolidated Statements of Stockholders’ Equity

(In thousands, except share amounts)

(Unaudited)


	Preferred Stock			Common Stock			Additional Paid-in Capital		Accumulated Deficit		Total Stockholders’ Equity
	Number of Shares	Stated Value		Number of Shares2	Par Value
Balance at December 31, 2022	—	$	—	17,986,147	$	18	$	632,009	$	(655,878)	$	(23,851)
Stock-based compensation	—	—		—	—		707		—		707
Stock Issue- warrant exercise	—	—		344,170	—		—		—		—


Issuance of common stock under equity compensation plan	—	—		118,172	—		(56)		—		(56)
Net and comprehensive loss	—	—		—	—		—		(7,811)		(7,811)
Balance at March 31, 2023	—	—		18,448,489	18		632,660		(663,689)		(31,011)
Stock-based compensation	—	—		—	—		568		—		568
Stock Issue- warrant exercise	—	—		813,000	1		(1)		—		—
Issuance of common stock	—	—		2,315,000	2		3,336		—		3,338
Warrant Liability3	—	—		—	—		2,685		—		2,685
Issuance of common stock under equity compensation plan	—	—		257,358	—		(75)		—		(75)
Net and comprehensive loss	—	—		—	—		—		(12,924)		(12,924)
Balance at June 30, 2023	—	—		21,833,847	21		639,173		(676,613)		(37,419)


	Preferred Stock			Common Stock			Additional Paid-in Capital		Accumulated Deficit		Total Stockholders’ Equity
	Number of Shares	Stated Value		Number of Shares 1	Par Value
Balance at December 31, 2021	—	$	—	9,713,767	$	10	$	599,703	$	(583,344)	$	16,369
Stock-based compensation	—	—		—	—		1,410		—		1,410

Issuance of common stock	—	—		129,333	—		4,803		—		4,803
Issuance of common stock under equity compensation plan	—	—		148,611	—		(58)		—		(58)
Net and comprehensive loss	—	—		—	—		—		(22,216)		(22,216)
Balance at March 31, 2022	—	—		9,991,711	10		605,858		(605,560)		308
Stock-based compensation	—	—		—	—		1,945		—		1,945
Issuance of common stock, net of issuance cost	—	—		784,724	1		9,697		—		9,698
Issuance of common stock under equity compensation plan	—	—		227,955	—		(40)		—		(40)
Net and comprehensive loss	—	—		—	—		$	—	(23,648)		(23,648)
Balance at June 30, 2022	—	—		11,004,390	11		$	617,460	(629,208)		(11,737)

See accompanying notes to unaudited condensed consolidated financial statements.

2 Reflects the 1-for-25 reverse stock split that became effective August 26, 2022. Refer to Note 1, “Background and Basis of Presentation.”

3 Warrant reclassification (Footnote 9 Fair Value Measurements)

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Athersys, Inc.

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)


	Six months ended June 30,
	2023		2022
Operating activities
Net loss	(20,735)		$	(45,864)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	95		865

Gain on debt extinguishment	(2,612)		—
Loss from impairment of assets	7,545		4,931
Stock-based compensation	1,275		3,355
Change in Paid-in-Kind (PIK) Interest Accrual	185		—
Change in fair value of Note Payables	640		—
Change in fair value of warrant liabilities	2,151		—





Changes in operating assets and liabilities:
Accounts receivable from Healios - billed and unbilled	52		820
Prepaid expenses, deposits and other	66		307
Accounts payable, accrued expenses and other	787		2,320

Deferred revenue - Healios	—		(3,340)



Net cash used in operating activities	(10,551)		(36,606)
Investing activities

Proceeds from the sale of equipment	105		—
Purchases of equipment	—		(1,825)
Net cash used in investing activities	105		(1,825)
Financing activities
Proceeds from issuance of common stock, net of issuance cost	3,342		14,500



Shares retained for withholding tax payments on stock-based awards	(131)		(98)

Net cash provided by financing activities	3,211		14,402
Decrease in cash and cash equivalents	(7,235)		(24,029)
Cash and cash equivalents at beginning of the period	9,038		37,407
Cash and cash equivalents at end of the period	$	1,803	$	13,378

See accompanying notes to unaudited condensed consolidated financial statements.

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Athersys, Inc.

Notes to Unaudited Condensed Consolidated Financial Statements

Three- and Six- Month Periods Ended June 30, 2023 and 2022

1. Background and Basis of Presentation

Organization

Athersys, Inc., including its consolidated subsidiaries (collectively, “we,” “us,” “our,” “Athersys,” and the “Company”), is a biotechnology company focused in the field of regenerative medicine and operates in one business segment. Our operations consist of research, clinical development activities, manufacturing and manufacturing process development activities, and our most advanced program is in a pivotal Phase 3 clinical trial for the treatment of ischemic stroke.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on April 3, 2023. The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and Regulation S-X. Accordingly, since they are interim statements, the accompanying financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accompanying financial statements reflect all adjustments, consisting of normal recurring adjustments and disclosures that are, in the opinion of management, necessary for a fair presentation of financial position and results of operations for the interim periods presented. Interim results are not necessarily indicative of results for a full year.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Our critical accounting policies, estimates and assumptions are described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” which is included in this Quarterly Report on Form 10-Q in Part I, Item 2.

Reverse Stock Split

On August 26, 2022, the Company amended its Certificate of Incorporation to implement a 1-for-25 reverse stock split of its common stock. The reverse stock split did not cause an adjustment to the par value or the authorized shares of the common stock. As a result of the reverse stock split, the Company adjusted the share amounts under its employee equity incentive plans, inducement awards and common stock warrant agreements with third parties. All disclosures of common shares and per common share data in the accompanying interim financial statements and related notes reflect the reverse stock split for all periods presented.

2. Going Concern

The accompanying unaudited condensed consolidated financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern.

At June 30, 2023, we had cash and cash equivalents of $1.8 million. We will need substantial additional funding to develop our MultiStem product candidate and to continue our operations. Significant additional capital will be required to continue our research and development programs, including progressing our clinical product candidates to potential commercialization and preparing for commercial-scale manufacturing and sales. If we are unable to obtain adequate financing, we likely would have to file for protection under the bankruptcy laws to continue to pursue potential transactions and conduct a wind down of our Company. If we decide to dissolve and liquidate our assets or to seek protection under the bankruptcy laws, it is unclear to what extent we will be able to pay our obligations, and, accordingly, it is further unclear whether and to what extent any resources will be available for distributions to stockholders. For the foreseeable future, our ability to continue our operations is dependent upon the ability to obtain additional funding through public or private equity offerings, debt financings, collaborations and/or licensing arrangements. However, there can be no assurance that we will be able to obtain such funding on terms acceptable to us, on a timely basis or at all, particularly in light of our current stock price and liquidity. If we are unable to obtain funding, we may be required to further delay, reduce or eliminate our MultiStem product candidate approval and commercialization efforts, which would adversely affect our business prospects, and we likely will be unable to continue operations. Additionally, our ability to make timely payments on obligations to the supplier we have entered into the Forbearance Agreement, discussed in more detail below, is dependent on future capital raise. The supplier has the right to call the full amount of the debt due

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immediately if we are late on a payment and do not remedy the delinquent payment in the allotted cure period. The accompanying consolidated financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern.

3. Accounting Standards Adopted

In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-13, Measurement of Credit Losses on Financial Instruments (Topic 326). This ASU replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. Subsequent to issuing ASU 2016-13, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326): Effective Dates, delaying the effective date for smaller reporting companies until January 2023. The impact of adoption of this standard did not have a material impact on the consolidated financial statements and disclosures.

4. Net Loss per Share

Basic and diluted net loss per share have been computed using the weighted-average number of shares of our common stock outstanding during the period.

As of June 30, 2023, we have outstanding options, restricted stock units and warrants that were not used in the calculation of diluted net loss per share because to do so would be anti-dilutive. As of June 30, 2023, we had warrants outstanding to purchase an aggregate of 400,000 shares of our common stock that were issued to HEALIOS K.K. (“Healios”) in August 2021 and are not yet exercisable according to their terms. Additionally, as of June 30, 2023, we had outstanding warrants to purchase 1,920,000, 2,000,000, 9,109,090, and 3,685,000 shares of our common stock that were issued in August 2022, September 2022, November 2022, and April 2023, respectively. Additionally, we had shares related to the convertible note that have been excluded from the calculation, as these would be anti-dilutive.

The following instruments were excluded from the calculation of diluted net loss per share because their effect would be anti-dilutive.


	Three months ended June 30,		Six months ended June 30,
	2023	2022	2023	2022
Stock options	1,132,606	1,224,505	1,132,606	1,224,505
Restricted stock units	525,239	69,765	525,239	69,765
Convertible Note - refer to Note 11	11,538,461	—	11,538,461	—
Warrants - refer to Note 8	17,114,090	400,000	17,114,090	400,000
Total	30,310,396	1,694,270	30,310,396	1,694,270

5. Property and Equipment, net


	For the periods ended
Property and equipment consists of (in thousands):	June 30, 2023		December 31, 2022
Laboratory equipment	$	7,224	$	7,576
Office equipment and leasehold improvements	3,933		3,934
Equipment not yet in service	2,911		2,313
	14,068		13,823
Accumulated depreciation and amortization	(9,435)		(9,609)
	$	4,633	$	4,214

Long-lived assets are evaluated for impairment when events or changes in circumstances indicate that the carrying amount of the asset or related group of assets may not be recoverable. In June 2022, we announced a restructuring plan (the “Plan”) of our organization with the intention of significantly reducing expenses, conserving cash, improving the focus of the Company’s activities and becoming more attractive to potential financial and strategic partners. The Plan included a significant reduction in our workforce and changes to our management team. The Plan also includes the reduction of our internal research function, the decommissioning of certain equipment and pausing our manufacturing and process development efforts toward commercializing our MultiStem product candidate. As a result of these actions, during 2022, we recorded impairment charges

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of approximately $7.2 million to adjust the carrying amount of certain equipment assets to the estimated market value of similar assets.

As part of the Plan, we have disposed of gross assets of approximately $0.4 million with accumulated depreciation of $0.3 million, for a gain of approximately $0.1 million for the six months ended June 30, 2023. We had no disposals for the period ended June 30, 2022, but as part of the Plan we did reduce the useful lives of equipment resulting in additional depreciation of $0.4 million.

On June 9, 2023, the landlord, Seasons Business Center Four, LLC, brought suit against the Company in the Summit County, Ohio Court of Common Pleas asserting claims for Breach of Contract (Lease), Promissory Estoppel, and Unjust Enrichment relating to the subject Lease between the parties. As a result of the Company surrendering possession of the property and returning the keys to the landlord the Company recorded an impairment charge related to the right-of-use asset of $7.5 million. The impairment charge is recorded in research and development costs and expenses for the three-and-six months ended June 30, 2023. The right-of-use liability has all been reclassified to current.

6. Collaborative Arrangements and Revenue Recognition

Healios Collaboration

We have a licensing agreement with Healios to primarily develop and commercialize our cell therapy technologies for certain disease indications in Japan, pursuant to which we received nonrefundable license fee payments and are entitled to royalties on net sales. We also have the right to receive development and commercial milestone payments from Healios, subject to certain potential credits that have been negotiated from time-to-time and are associated with modifications to the arrangement. Healios is responsible for the development and commercialization of the licensed products in the licensed territory, and we provide certain services to Healios for which we are paid.

In February 2021, the Company, Healios, and Dr. Tadahisa Kagimoto entered into a Cooperation Agreement, or the Cooperation agreement, which established Director Nominations and Related Agreements and established the Standstill Provisions.

In August 2021, the Company and Healios entered into a Comprehensive Framework Agreement for Commercial Manufacturing and Ongoing Support, or the Framework Agreement, which provided for clarification under and modified the existing agreements between the parties. It also provided Healios with deferral of certain milestone payments. Under the Framework Agreement, the Company was entitled to payments for reimbursable services of which $0.7 million and $0.6 million which are included in accounts receivable from Healios at June 30, 2023 and June 30, 2022, respectively.

In addition, under the Framework Agreement, the Company was entitled to a $3.0 million milestone payment from Healios and was obligated to pay Healios $1.1 million by December 31, 2022. In September 2022, we received $1.9 million from Healios, which represents the milestone payment net of amounts owed to Healios. Additionally, to assist Healios with the advancement of its ischemic stroke and acute respiratory distress syndrome (“ARDS”) programs in Japan, in September 2022, we granted to Healios, subject to the terms of the licensing agreement, a non-exclusive license to make and have made MultiStem for the treatment of ischemic stroke and ARDS worldwide solely for import for use in Japan. In connection with the execution of the Framework Agreement, the Cooperation Agreement was amended to extend certain customary standstill provisions until the conclusion of our 2023 annual meeting of stockholders.

In August 2021, we also issued two warrants (together, the “2021 Warrants”) to Healios in connection with the Framework Agreement to purchase up to a total of 400,000 shares of our common stock. The 2021 Warrants are being accounted for as consideration paid or payable to a customer according to Topic 606, Revenue from Contracts with Customers, and Topic 718, Compensation Stock Compensation, under which the recognition of such equity instruments is required at the time that the underlying performance conditions become probable or are satisfied. As of June 30, 2023, the 2021 Warrants have not been recorded as the underlying performance conditions have not been satisfied and are not yet considered probable. Refer to Note 8, “Stockholders’ Equity and Warrants”, for further information.

Healios has alleged that we are in material breach of our Framework Agreement for, among other things, not meeting our supply obligations and cooperation and assistance obligations. We strongly disagree with Healios’ allegations and will continue to work with Healios to try to resolve this dispute. However, there can be no assurance that we will be able to resolve this dispute without legal proceedings.

Healios Revenue Recognition

At the inception of the Healios arrangement and again each time that the arrangement has been modified, all material performance obligations were identified, which include (i) licenses to our technology, (ii) product supply services, and (iii) manufacturing services provided on Healios’ behalf.

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Under the Framework Agreement, it was determined there was one performance obligation for services necessary for regulatory approvals, manufacturing readiness, and commercial launch in Japan. We determined the transaction price included estimated payments for reimbursable services to be performed by us for Healios and the $3.0 million milestone payment. We allocated the total transaction price to this one performance obligation. We began recognizing revenue in the third quarter of 2021 as the services were being performed. At June 30, 2023, the services related to this performance obligation are largely complete and consist of minimal close-out activities which are immaterial. During the three months ended June 30, 2023, we recognized no revenue associated with this performance obligation, compared to $2.3 million for three months ended June 30, 2022. We recognized no revenue for three months ended June 30, 2023 and June 30, 2022 from performance obligations satisfied in previous periods.

Accounts receivable from Healios

Accounts receivable from Healios are related to our contracts and are recorded when the right to consideration is unconditional at the amount that management expects to collect. Accounts receivable from Healios do not bear interest if paid when contractually due, and payments are generally due within thirty to forty-five days of invoicing.

Advance from Healios

In 2017, we amended the clinical trial supply agreement for the manufacturing of clinical product for TREASURE to clarify a cost-sharing arrangement. The proceeds from Healios that relate specifically to the cost-sharing arrangement may either (i) result in a reduction in the proceeds we receive from Healios upon the achievement of two potential milestones and an increase to a commercial milestone under the license agreement for stroke or (ii) be repaid to Healios at our election, as defined. The cost-sharing proceeds received are recognized in advance from Healios on the unaudited condensed consolidated balance sheets until the earlier of the milestones being achieved or such amounts being repaid to Healios at our election, at which time the culmination of the earnings process or the repayment will be complete.

Disaggregation of Revenues

We recognize product supply revenue at a point in time upon delivery, as defined in the applicable product supply contracts, while service revenue is recognized when earned over time. The following table presents our contract revenues disaggregated by timing of revenue recognition (in thousands):


	Three months ended June 30, 2023				Three months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		2,316

Total disaggregated revenues	$	49	$	—	$	—	$	2,316


	Six months ended June 30, 2023				Six months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		5,228

Total disaggregated revenues	$	49	$	—	$	—	$	5,228

7. Stock-Based Compensation

Our 2019 Equity and Incentive Compensation Plan (the “EICP”) authorized at inception, an aggregate of approximately 1,700,000 shares of our common stock for awards to employees, directors and consultants. The EICP authorizes the issuance of stock-based compensation in the form of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other stock-based awards. As of June 30, 2023, a total of 961,333 shares (including 11,289 shares related to an expired incentive plan) of common stock have been issued under our equity incentive plans.

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As of June 30, 2023, a total of 84,103 shares were available for issuance under our EICP, and stock-based awards representing 1,228,345 (including 21,092 shares related to an expired incentive plan) of common stock were outstanding. Additionally, inducement stock options granted outside of our equity incentive plans to purchase 429,500 shares of common stock were outstanding at June 30, 2023. For the three months ended June 30, 2023 and 2022, stock-based compensation expense was approximately $0.6 million and $1.9 million, respectively. At June 30, 2023, total unrecognized estimated compensation cost related to unvested stock-based awards was approximately $3.8 million, which is expected to be recognized by the end of 2026 using the straight-line method.

8. Stockholders’ Equity and Warrants

At June 30, 2023 and June 30, 2022, we had 600,000,000 shares of common stock and 10,000,000 shares of undesignated preferred stock authorized. No shares of preferred stock have been issued as of June 30, 2023 and 2022.

August 2022 Securities Purchase Agreement

On August 15, 2022, the Company entered into a placement agency agreement with A.G.P./Alliance Global Partners (“A.G.P.”), pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P. received a placement fee of approximately $0.8 million and approximately $0.1 million for the reimbursement of expenses.

On August 15, 2022, the Company entered into a securities purchase agreement (the “August 2022 Purchase Agreement”) with an investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 1,200,000 shares of the Company’s common stock, (ii) pre-funded warrants (the “August 2022 Pre-Funded Warrants”) exercisable for an aggregate of 720,000 shares of common stock and (iii) warrants (the “August 2022 Common Warrants”) exercisable for an aggregate of 1,920,000 shares of common stock, in combinations of one share of common stock or one August 2022 Pre-Funded Warrant and one August 2022 Common Warrant for a combined purchase price of $6.25 (less $0.0025 for any August 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the August 2022 Purchase Agreement, the August 2022 Pre-Funded Warrants were exercisable upon issuance, and the August 2022 Common Warrants were exercisable upon the six-month anniversary of issuance for a five-year period. Under the August 2022 Purchase Agreement, each August 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0025 and each August 2022 Common Warrant was exercisable for one share of common stock at a price per share of $6.385. The offering closed on August 17, 2022 and the Company received net proceeds of approximately $11.0 million, after giving effect to the payment of placement fees and expenses. On August 29, 2022, the August 2022 Pre-Funded Warrants were exercised in full and re-measured to fair value. Upon remeasurement and exercise, we recorded a gain of $0.8 million to adjust the warrant liability associated with the August 2022 Pre-Funded Warrants to fair value and reclassified the $3.8 million warrant liability to additional paid-in capital. The fair value adjustment is recorded in other income, net on the condensed consolidated statement of operations and comprehensive loss.

Pursuant to the August 2022 Purchase Agreement, in the event the Company proposes a future offering to sell shares of common stock during the twelve months following the closing date, the investor has the right to participate in each offering in an amount up to 30.0%.

On September 22, 2022, the Company entered into an amendment to the August 2022 Purchase Agreement (the “August 2022 Purchase Agreement Amendment”) with the investor to, among other things, (i) amend the August 2022 Common Warrants to be exercisable for a seven-year period after the six-month anniversary of the closing date, (ii) reduce the standstill period, (iii) reduce the term and the amount of the participation right, and (iv) require the investor, subject to certain conditions, to participate in future offerings to sell certain securities to investors primarily for capital raising purposes.

On September 22, 2022, in consideration of the August 2022 Purchase Agreement Amendment, and without receiving any cash proceeds, the Company issued to the investor additional warrants exercisable for 2,000,000 shares of common stock (the “September Warrants”) at a price of $6.385 for a seven-year period after the six-month anniversary of the date of issuance thereof.

The Company has assessed the August 2022 Pre-Funded Warrants, the August 2022 Common Warrants and the September Warrants (collectively, the “Warrants”) for appropriate equity or liability classification pursuant to the Company’s accounting policy as described in Note C, in the notes to consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2022. The Warrants contain a provision pursuant to which the warrant holder has the option to receive cash in the event there is a fundamental transaction (contractually defined to include various merger, acquisition or stock transfer activities). The Warrants met the definition of a derivative pursuant to ASC 815, Derivatives and Hedging and did not meet the derivative scope exception. As a result, the Warrants were initially recorded as liabilities and measured at fair value using the Black-Scholes valuation model. Issuance costs of $0.5 million were allocated to the Pre-Funded Warrants and Common Warrants and recorded in other income, net on the condensed consolidated statement of operations and

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comprehensive loss in the three ended September 30, 2022. The remaining issuance costs of $0.4 million were allocated to the common stock and recorded in additional paid-in capital.

On April 17, 2023, the Company amended the August Warrants and the September Warrants to, among other things, reduce the exercise price to $0.96 per share with respect to 1,920,000 shares of common stock covered by the August Warrants and 1,760,000 shares of common stock covered by the September Warrants. As a result of the amended agreement, the August and September Warrants now meet the guidance for equity classification in accordance with ASC 815, Derivatives and Hedging. The warrants were adjusted to their fair value on April 17, 2023, inclusive of the change in exercise price and the change in fair value was recorded in other (expense) income, net and then the warrants were reclassified to additional paid-in-capital (APIC).

During the three- and six-months ended June 30, 2023, the Company recognized other expense of $1.5 million and other expense of $2.2 million, respectively, for the fair value adjustment related to the warrant liabilities.

November 2022 Securities Purchase Agreement

On November 9, 2022, the Company entered into a placement agency agreement with A.G.P. pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P received a placement fee of approximately $0.4 million and approximately $0.1 million for the reimbursement of expenses.

On November 9, 2022, the Company entered into a securities purchase agreement (the “November 2022 Purchase Agreement”) with investors, pursuant to which the Company agreed to issue and sell, in a public offering, (i) an aggregate of 3,927,275 shares of the Company’s common stock, (ii) pre-funded warrants (the “November 2022 Pre-Funded Warrants”) exercisable for an aggregate of 1,077,270 shares of common stock and (iii) warrants (the “November 2022 Common Warrants”) exercisable for an aggregate of 10,009,090 shares of common stock, in combinations of one share of common stock or one November 2022 Pre-Funded Warrant and two November 2022 Common Warrants for a combined purchase price of $1.10 (less $0.0001 for any November 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the November 2022 Purchase Agreement, the November 2022 Pre-Funded Warrants and November 2022 Common Warrants were exercisable upon issuance. Under the November 2022 Purchase Agreement, each November 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0001 and each November 2022 Common Warrant is exercisable for one share of common stock at a price per share of $1.10 for a five-year period after the date of issuance. The offering closed on November 10, 2022, and the Company received net proceeds of approximately $5.0 million, after giving effect to the payment of placement fees and expenses. The November 2022 Pre-Funded Warrants were exercised in full at the closing.

The November 2022 Common Warrants meet the requirements to be classified as equity in accordance with ASC 815, Derivatives and Hedging. The November 2022 Common Warrants were recorded at their relative fair value at issuance in the stockholders’ equity section of the balance sheet.

April 2023 Securities Purchase Agreement

On April 18, 2023, the Company entered into a placement agency with A.G.P. pursuant to which A.G.P. agreed to serve as the exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P. received a placement fee of approximately $0.2 million and approximately $0.1 million for the reimbursement of expenses.

On April 18, 2023, the Company entered into a securities purchase agreement (the “April 2023 Purchase Agreement”) with investors, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 2,315,000 shares of the Company’s common stock and (ii) pre-funded warrants (the “April 2023 Pre-Funded Warrants”) exercisable for an aggregate of 1,370,000 shares of common stock, together with warrants (the “April 2023 Common Warrants”) exercisable for an aggregate of 3,685,000 shares of the Company’s common stock in a private placement, in combinations of one share or one April 2023 Pre-Funded Warrant and one April 2023 Common Warrant for a combined purchase price of $1.00. Subject to certain ownership limitations, the April 2023 Pre-Funded Warrants are exercisable upon issuance, and the April 2023 Common Warrants are exercisable upon the six-month anniversary of issuance. Each April 2023 Pre-Funded Warrant is exercisable for one share of common stock at a price per share of $0.0001 (as adjusted from time to time in accordance with the terms thereof) and does not expire. Each April 2023 Common Warrant is exercisable into one share of common stock at a price per share of $0.96 (as adjusted from time to time in accordance with the terms thereof) for a seven-year period after the six-month anniversary of the date of issuance. The offering closed on April 19, 2023, and the Company received net proceeds of approximately $3.4 million, after giving effect to the payment of placement fees and expenses.

The April 2023 Common Warrants and 557,000 of the remaining outstanding April 2023 Pre-Funded Warrants meet the requirements to be classified as equity in accordance with ASC 815, Derivatives and Hedging. The April Common Warrants were recorded at their relative fair value at issuance in the stockholders’ equity section of the balance sheet.

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Healios 2021 Warrants

In August 2021, we issued the 2021 Warrants to Healios to purchase up to an aggregate of 400,000 shares of our common stock. One of the 2021 Warrants is for the purchase of up to 120,000 shares at an exercise price of $45.00 per share, subject to specified increases, and generally is only exercisable within 60 days of receipt of either conditional or full marketing approval from the Pharmaceuticals and Medical Devices Agency in Japan (the “PMDA”) for the intravenous administration of MultiStem to treat patients who are suffering from acute respiratory distress syndrome. The other 2021 Warrant is for the purchase of up to 280,000 shares at an exercise price of $60.0 per share, subject to specified increases, and generally is only exercisable within 60 days of receipt of either conditional or full marketing approval from the PMDA for the intravenous administration of MultiStem to treat patients who are suffering from ischemic stroke. The 2021 Warrants may be terminated by us under certain conditions and have an exercise cap triggered at Healios’ ownership of 19.9% of our common stock.

Equity Purchase Agreement

We previously had equity purchase agreements in place since 2011 with Aspire Capital Fund, LLC (“Aspire Capital”) that provided us the ability to sell shares to Aspire Capital from time to time. On May 12, 2022, we entered into an agreement (the “2022 Equity Facility”) that included Aspire Capital’s commitment to purchase up to an aggregate of $100.0 million of shares of our common stock over a defined timeframe. The terms of the 2022 Equity Facility were similar to the previous equity facilities with Aspire Capital. Our prior equity facility that was entered into in June 2021, or the 2021 Equity Facility, and includes Aspire Capital’s commitment to purchase up to an aggregate of $100.0 million of shares of our common stock over a defined timeframe. The terms of the 2021 Equity Facility are similar to the previous equity facilities with Aspire Capital, and we filed a registration statement for the resale of 1,600,000 shares of our common stock in connection with the 2021 Equity Facility. Our prior equity facility that was entered into in 2019, that was fully utilized and terminated during the third quarter of 2021.

On July 6, 2022, Aspire Capital terminated the 2022 Equity Facility. Aspire Capital had the right to terminate the 2022 Equity Facility at the time or any time after any of the Company’s then current executive officers ceased to be an executive officer or full-time employee of the Company, which right was triggered in connection with the departures of William Lehmann, former president and Chief Operating Officer, John Harrington, Former Executive Vice President and Chief Scientific Officer, and Ivor MacLeod, former Chief Financial Officer.

During quarter ended June 30, 2022, we sold 1,003,560 shares to Aspire Capital at an average price of $9.67 per share.

9. Fair Value Measurements

The carrying amounts of certain financial instruments, including cash and cash equivalents, accounts receivable, prepaid expenses and other current assets, accounts payable and accrued expenses approximate their respective fair values due to the short-term nature of such instruments.

Liabilities Measured at Fair Value on a Recurring Basis

The Company evaluates its financial assets and liabilities subject to fair value measurements on a recurring basis to determine the appropriate level in which to classify them for each reporting period. The requirement requires judgements to be made. Our Level 3 financial liabilities consist of the warrant liabilities and a convertible note payable for which there is no current market such that the determination of fair value requires judgement or estimation. Changes in fair value measurements categorized within Level 3 of the fair value hierarchy are analyzed each period based on changes in estimates or assumptions and recorded as appropriate. The Company uses the Black-Scholes option valuation model to value the Level 3 warrant liabilities at inception and on subsequent valuation dates. This model incorporates transaction detail such as the Company’s stock price, contractual terms, maturing, risk free rates as well as volatility. The unobservable input for the Level 3 warrant liabilities includes volatility, which is not significant to the fair value measurement of the warrant liabilities.

A reconciliation of the beginning and ending balances for the warrant liabilities which are measured at fair value on a recurring basis using significant unobservable inputs (Level 3) is as follows (in thousands):



	Warrant Liabilities
Balance December 31, 2022	$	(534)
Fair Value Adjustment - March 31, 2023	(629)
Balance March 31, 2023	(1,163)
Fair Value Adjustment - April 18, 2023	(1,522)
Reclassification to Additional paid in capital	2,685
Balance June 30, 2023	$	—

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The Company uses the Lattice Model to value the Level 3 note payable liabilities at inception and for subsequent valuation dates. This model incorporates transaction detail such as the term of the note, the nominal value of the note at inception, the coupon rate of the note, the conversion price of the note, the Company’s stock price, risk-free rate and implied bond yield as well as volatility. The unobservable input for the Level 3 note payable includes volatility and implied bond yield, which are significant to the fair value measurement of the note payable. The Company’s stock is publicly traded and is readily determinable. The risk-free interest rate is based on the U.S. Treasury yield for a period consistent with the expected term of the Note. We determine volatility by using our historical stock volatility. The implied bond yield is based on the required rate of return for mezzanine financing for similar companies.

The following weighted-average input assumptions were used in determining the fair value of the note at inception and as of June 30, 2023. Volatility was 49.5% on May 17, 2023, and 50.6% on June 30, 2023, and the implied bond yield was 18.9% on May 17, 2023, and 19.6% on June 30, 2023

A reconciliation of the beginning and ending balances for the note payable which are measured at fair value on a recurring basis using significant unobservable inputs (Level 3) is as follows (in thousands):



	Note Payable		Accrued Interest		Total Fair Value
Balance March 31, 2023	$	—	$	—	$	—
Initial Transaction Fair Value - May 17	$15,000		—		15,000
Accrued Paid-in-Kind (PIK) Interest as of June 30, 2023	—		185		185
Fair Value Adjustment - June 30, 2023	640		—		640
Balance June 30, 2023	15,640		185		$	15,825

10. Other Income and Expense

Other (expense) income consists of loss from extinguishment of debt, interest expense, foreign exchange gain/(loss), fair value change from warrants, gain/(loss) on disposal of assets and other.


	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Gain/(Loss) from extinguishment of debt	$	2,612	$	—	$	2,612	$	—
Change in fair value - note payable	(640)		—		(640)		—
Interest expense	(366)		(6)		(376)		(14)
Foreign exchange gain/(loss)	(80)		117		(178)		284
Fair value change - warrants	(1,522)		—		(2,151)		—
Gain/(Loss) on disposal of assets	—		—		146		—
Other	60		499		174		502
	$	64	$	610	$	(413)	$	772

11. Forbearance Agreement and Convertible Note

On May 17, 2023, the Company entered into a Forbearance, Restructuring and Settlement Agreement (the “Forbearance Agreement”) with a supplier, which amends certain supply agreements between the Company and the supplier.

The Forbearance Agreement provides that the supplier agrees to forbear from exercising rights and remedies available as a result of existing overdue amounts under existing agreements, so long as the Company pays to the supplier an aggregate of $11.8 million in deferred accounts payable, in monthly payments of $0.25 million, commencing in October 2023. Pursuant to the terms of the Forbearance Agreement, the Company also issued a convertible promissory note to the supplier in the principal amount of $15.0 million (the “Note”).

The Company accounted for the restructuring as an extinguishment and recorded the new liabilities at fair value of $7.9 million for the deferred accounts payable and $15.0 million for the Note. The Company recorded a gain on extinguishment of $2.6 million as a result of the restructuring.

The Note bears interest at a rate of 10.0% per annum, which shall be capitalized and added to the principal amount semi-annually on January 1 and July 1, commencing on July 1, 2023, and must be repaid in full, including accrued and unpaid

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interest thereunder, on (or before, subject to certain conditions) May 17, 2026 (the “Maturity Date”). The Note provides for customary events of default, including nonpayment, failure to comply with covenants or other agreements in the Note, certain events of bankruptcy and an adverse judgment for payment of $3.0 million or more (each, an “Event of Default”). Upon and during the continuance of any Event of Default, the rate of interest shall increase to 14%. The obligations under the Note are guaranteed by certain of the Company’s existing subsidiaries. Subject to a beneficial ownership limitation of 19.99% of the Company’s outstanding common stock and any shareholder approval requirements, the supplier may elect, at its sole discretion, to convert any outstanding principal and interest on the Note into shares of common stock of the Company at a conversion price of $1.30 per share (subject to adjustment as provided under the Note), which amounts to 11,538,461 convertible shares, at any time after the 18-month anniversary of the date of issuance of the Note (or upon an Event of Default) until the total outstanding balance of the Note is paid.

The Company has elected the fair value option under ASC 825-10-25 to measure the Note at fair value at inception and in subsequent periods, with changes in fair value reported in earnings. The Note is eligible for the fair value option as it is a permissible instrument within the scope of ASC 825-10-15. The Company incurred debt issuance costs (legal fees) of $16,679 which were expensed at issuance. The fair value of the Note on June 30, 2023 was $15.8 million and the change in fair value of $0.8 million was reported in other (expense) income, net, with $0.2 million being recorded as Paid-in-Kind interest and the remaining $0.6 million being the fair value adjustment, increasing the interest expense and note payable balance. See a reconciliation of the change in fair value of the Note in Note 9, “Fair Value Measurements”.

The Note is an unsecured obligation. The Note is unconditionally and irrevocably guaranteed by certain guarantors.

If an Event of Default occurs under points (1) through (6) below, the holder of the Note may request for acceleration of maturity of 100% of the Note principal. Upon the request for acceleration of maturity, the Note principal will be due immediately. If an Event of Default occurs under clause (4) and (5) below, 100% of the principal amount of the Note will be automatically and immediately due and payable to the holder of the note.

An Event of Default is defined in the Agreement as any of the following:

1.Company defaults in the payment of principal, accrued and unpaid interest or any other amounts owing under the Note

2.Any representation or warranty made by the Company proves to have been false

3.The Company defaults in the performance of, or fails to comply with, any other terms, provision, condition, covenant or agreement contained in the Note

4.Company files for bankruptcy

5.Court appoints a custodian, receiver, trustee or other officer for dissolution, winding-up, or liquation of the Company

6.One or more judgments for payment of money in excess of $3 million shall be rendered against the Company

The deferred accounts payable does not accrue interest as long as all monthly payments are made on or before the last day of each calendar month, starting in October 2023 and running for 48 months or until the full $11.8 million balance has been repaid. Any cash payment not paid when due shall be subject to interest at the rate of 10% per annum running from the date of the last cash payment made by or on behalf of the Company. If any cash payment remains unpaid for more than 60 days following the date such cash payment was due, the supplier has the right to declare the entire remaining balance due immediately and payable without further notice. Cash payments automatically become immediately due and payable upon the commercial readiness by the Company.

12. Restructuring Charges

In June 2022, we announced a restructuring of our organization (the “Plan”), including an approximate 70% reduction in our workforce. As part of the Plan, we also announced changes to our executive team. Mr. Lehmann left the Company on May 31, 2022. Dr. Harrington and Mr. Macleod left the Company on June 30, 2022.

The Company’s restructuring efforts are intended to preserve cash and reduce operating expenses going forward. In addition to the workforce reductions, the Company’s restructuring efforts include the reduction of our internal research function, the decommissioning of certain equipment and pausing our manufacturing and process development efforts toward commercializing our MultiStem product candidate.

The following table sets forth certain details associated with the restructuring charges incurred in the three months ended June 30, 2023 and the obligations recorded for the expenses associated with the Plan (in thousands). It is anticipated the Plan will be completed by the end of 2023.

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	Balances				Cash		Balances
	March 31, 2023		Charges		(payments)		June 30, 2023
Employee severance and benefits	565		$	—	(251)		$	314
Legal and professional fees	27		16		(16)		27
Other	15		—		(15)		—
	$	607	$	16	$	(282)	$	341

The current portion of our restructuring accrual is included in accrued compensation and related benefits and accounts payable and there is no long-term portion of our restructuring accrual.

Restructuring charges are recorded general and administrative costs and expenses for the three months ended June 30, 2023.

13. Income Taxes

We have United States (“U.S.”) federal net operating loss and research and development tax credit carryforwards, as well as state and city net operating loss carryforwards, which may be used to reduce future taxable income and tax liabilities. We also have foreign net operating loss and tax credit carryforwards, and the foreign net operating loss carryforwards do not expire. Substantially all of our deferred tax assets have been fully offset by a valuation allowance due to our cumulative losses. The carrying value of our deferred tax assets and liabilities is determined by the enacted U.S. corporate income tax rate. Consequently, any changes in the U.S. corporate income tax rate impacts the carrying value of our deferred tax assets and liabilities. Also, there are significant limitations on our ability to utilize our net operating loss and tax credit carryforwards generated prior to October 2012 under Section 382 of the Internal Revenue Code of 1986, as amended. Utilization of some of the federal and state net operating loss and tax credit carryforwards generated after October 2012 may be subject to additional annual limitations due to the “change in ownership” provisions of the IRC and similar state provisions. The annual limitations may result in the expiration of net operating losses and credits before utilization. The Company has not performed a Section 382 study subsequent to October 2012 as of June 30, 2023. We will update our analysis under Section 382 prior to using these attributes.

14. Subsequent Events

Nasdaq Notices

Market Value Standard Compliance

On October 14, 2022, we received a written notice (the “October 2022 Notice”) from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) that we are not in compliance with the requirement to maintain a minimum market value of listed securities of $35 million, as set forth in Nasdaq Listing Rule 5550(b)(2) (the “Market Value Standard”) because the market value of the common stock was below $35 million for 30 consecutive business days. The October 2022 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(C), we had a period of 180 calendar days from the date of the October 2022 Notice, or until April 12, 2023, to regain compliance under the Market Value Standard.

On April 13, 2023, we received notice from Nasdaq that we had not regained compliance with the Market Value Standard. On April 14, 2023, we filed our request for a hearing, which was held before the Nasdaq Hearing Panel (the “Panel”) on May 18, 2023.

On June 26, 2023, the Panel notified us that it had granted our request for an exception through September 15, 2023, to the continued listing requirements, subject to our demonstrating compliance with the Market Value Standard by September 15, 2023. In accordance with the Market Value Standard and Nasdaq Listing Rule 5810(c)(3)(C), compliance with the Market Value Standard may be achieved if at any time during the compliance period the market value of the listed securities closes at a value of at least $35 million for a minimum of ten consecutive business days.

The Panel noted that it reserves the right to reconsider the terms of this exception based on any event, condition or circumstance that exists or develops that would, in the opinion of the Panel, make continued listing of our securities on Nasdaq inadvisable or unwarranted. In addition, the Nasdaq Listing and Hearing Review Council may, on its own motion, determine to review any Panel decision within 45 calendar days after issuance of the written decision. There can be no assurance that we will be able to regain compliance under the Market Value Standard, or will otherwise be in compliance with other Nasdaq listing criteria. While we are exercising diligent efforts to maintain the listing of our common stock on The Nasdaq Capital Market, there can be no assurance that we will be able to regain or maintain compliance with Nasdaq listing criteria.

Minimum Closing Bid Price Compliance

On July 28, 2023, the Company received a written notice (the “July 2023 Notice”) from Nasdaq that the Company is not in compliance with the requirement to maintain a minimum closing bid price of $1.00 per share, as set forth in Nasdaq Listing Rule 5550(a)(2) (the “Bid Price Requirement”), because the closing bid price of the Company’s common stock was below

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$1.00 per share for 30 consecutive business days for the period of June 14, 2023 through July 27, 2023. The July 2023 Notice does not impact the listing of the Company’s common stock on The Nasdaq Capital Market at this time.

The July 2023 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has a period of 180 calendar days from the date of the July 2023 Notice, or until January 24, 2024, to regain compliance with the Bid Price Requirement. During this period, the Company’s common stock will continue to trade on The Nasdaq Capital Market. If at any time before January 24, 2024, the bid price of the Company’s common stock closes at or above $1.00 per share for a minimum of ten consecutive trading days, Nasdaq will provide written notification that the Company has achieved compliance with the Bid Price Requirement and the matter will be closed. However, under Nasdaq Listing Rule 5810(c)(3)(A), Nasdaq may exercise its discretion to extend this ten day period as discussed in Rule 5810(c)(3)(H).

The Company is considering all available options to regain compliance with the Bid Price Requirement. However, there can be no assurance that the Company will be able to regain compliance with the rule or will otherwise be in compliance with other Nasdaq listing criteria. In the event the Company does not regain compliance by January 24, 2024, the Company may be eligible for an additional 180 calendar day compliance period to demonstrate compliance with the Bid Price Requirement. To qualify for the additional 180-day period, the Company will be required to meet the continued listing requirements for market value of publicly held shares and all other initial listing standards (with the exception of the Bid Price Requirement). In addition, the Company will need to provide written notice to Nasdaq of its intention to cure the deficiency during the second compliance period by effecting a reverse stock split, if necessary. If the Company does not qualify for the second compliance period or fails to regain compliance during the second 180-day period, then Nasdaq will notify the Company that its common stock is subject to delisting. At that time, the Company may appeal the delisting determination to a Nasdaq Hearings Panel.

Healios Update

On August 9, 2023, ABT Holding Company, a wholly-owned subsidiary of Athersys, Inc. (together, the “ABT/ATHX”), entered into a Memorandum of Understanding (“MOU”) with HEALIOS, K.K. (“Healios”), which memorializes the terms between the ABT/ATHX and Healios regarding consultation services that ABT/ATHX agreed to provide Healios as it explores its effort to join and participate in the Company’s ongoing MASTERS-2 Study, a 300 patient Phase 3 clinical trial for the treatment of ischemic stroke using MultiStem (the “Masters-2 Trial”).

The MOU, among other things, provides that the ABT/ATHX will support Healios’ consultation with Japanese Pharmaceuticals and Medical Devices Agency (“PMDA”). In exchange, Healios agreed to compensate the ABT/ATHX for the aforementioned consultation services. Pursuant to the MOU, Healios has deposited $150,000 with the Company to be applied to the charges incurred for these consultation services. As outlined in the MOU, ABT/ATHX will work with Healios to facilitate regulatory consultation with PMDA and will make available to Healios certain information necessary to facilitate regulatory consultation. Consultation with the PMDA is a necessary step to enable Healios to elect to join the Masters-2 Trial. If Healios elects to join the Masters-2 Trial, additional compensation will be paid by Healios for support and clinical doses provided by the Company, per existing contracts.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

This discussion and analysis should be read in conjunction with our unaudited condensed consolidated financial statements and notes thereto included in this Quarterly Report on Form 10-Q (this “Quarterly Report”) and the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022. Operating results are not necessarily indicative of results that may occur in future periods. See also “Cautionary Note on Forward-Looking Statements” preceding Part I.

Overview and Recent Developments

We are a biotechnology company that is focused primarily in the field of regenerative medicine. Our MultiStem® (invimestrocel) cell therapy, a patented and proprietary allogeneic stem cell product candidate, is our lead platform product and is currently in clinical development. Our most advanced program is an ongoing Phase 3 clinical trial for the treatment of ischemic stroke. Our clinical development programs are focused on treating neurological conditions, inflammatory and immune disorders, certain pulmonary conditions and other conditions where the current standard of care is limited or inadequate for many patients, particularly in the critical care segment.

Restructuring and Financial

In June 2022, we announced a restructuring of our organization, including an approximate 70% reduction in workforce. As part of the restructuring plan, we also announced changes to our executive team. William (B.J.) Lehmann, former President and Chief Operating Officer, left the Company on May 31, 2022. John Harrington, former Executive Vice President and Chief Scientific Officer, and Ivor Macleod, former Chief Financial Officer, left the Company on June 30, 2022.

In addition to the workforce reductions, in an effort to conserve cash and maintain adequate liquidity, we suspended operations in a number of areas including the reduction of our internal research function, plans for decommissioning certain equipment and

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suspending our manufacturing and process development efforts toward commercializing our MultiStem product candidate, if approved, as discussed below. We are currently unable to predict the duration of the suspension, and we plan to continue limited operations until we obtain additional funding. Our current development activities are limited to progressing our pivotal Phase 3 clinical trial of MultiStem cell therapy for the treatment of ischemic stroke, referred to as MASTERS-2 and supporting the Phase 2 clinical trial evaluating MultiStem cell therapy for the early treatment of traumatic injuries and the subsequent complications that result following severe trauma being conducted by UTHealth, at the Memorial Hermann-Texas Medical Center, or UTHealth, in Houston, Texas one of the busiest Level 1 trauma centers in the United States.

As of August 9, 2023, we had $0.8 million of cash and cash equivalents and accounts payable of $16.5 million, of which $8.7 million is related to deferred accounts payable to supplier. To conserve cash, we have been managing our disbursements and working with our suppliers and service providers to address the outstanding accounts payable. To preserve liquidity in the Company, named executive officers, including severance to former executives, have agreed to defer compensation. The accumulated amount of compensation as of July 31, 2023, owed to these executives was approximately $0.3 million. In the near term, we will need to obtain significant capital through public or private equity offerings, debt financings, collaborations and licensing arrangements or other sources to continue to fund our operations. However, there can be no assurance that we will be able to obtain such funding on terms acceptable to us, on a timely basis or at all, particularly in light of our current stock price and liquidity. If we are unable to obtain adequate financing, we likely would have to file for protection under the bankruptcy laws to continue to pursue potential transactions and conduct a wind down of our Company. If we decide to dissolve and liquidate our assets or to seek protection under the bankruptcy laws, it is unclear to what extent we will be able to pay our obligations, and, accordingly, it is further unclear whether and to what extent any resources will be available for distributions to stockholders.

Current Programs

Our MultiStem cell therapy product development programs in the clinical development stage include the following:

•Ischemic Stroke: Our MASTERS-2 clinical trial is a randomized, double-blind, placebo-controlled clinical trial designed to enroll 300 patients in the United States and certain other international locations. The study is evaluating efficacy and safety of MultiStem cell therapy in patients who have suffered moderate to moderate-severe ischemic stroke. We initiated the study with a limited number of high-enrolling sites and have been bringing on additional sites over time in line with clinical product supply and clinical operations objectives.

The MASTERS-2 study has received several regulatory designations and regulatory agreements including Special Protocol Assessment agreement, or SPA, Fast Track designation, Regenerative Medicine Advanced Therapy, or RMAT, designation and initial pediatric study plan, or iPSP agreement, from the U.S. Food and Drug Administration, or FDA, as well as a Final Scientific Advice positive opinion, Advanced Therapy Medicinal Product, or ATMP, quality certification and pediatric investigation plan, or PIP, agreement from the European Medicines Agency, or EMA.

On March 21, 2023, we held a Type B meeting with the FDA to address proposed modifications to our primary and secondary endpoints for our MASTERS-2 clinical trial protocol. We proposed four modifications, all of which were accepted.

•Changed the timing of the primary endpoint assessed by shift analysis in modified Rankin Scale, or mRS, score to Day 365, from Day 90.

•Retained shift analysis in mRS score at Day 90 as a key secondary endpoint, along with other revised secondary endpoints.

•Removed eligibility caps on concomitant reperfusion therapy to ensure the final study population is reflective of the current standard of care in the population eligible for this therapy

•We may elect to have an independent statistician conduct an interim analysis to assess potential sample size adjustment.

The fact that we were previously granted RMAT, Fast Track Designation and SPA agreement for the use of MultiStem enabled sponsors to work closely with the FDA and receive guidance on expediting the advancement of the designation program. We believe the proposed changes allow us to thoroughly evaluate the mechanisms through which MutliStem treatment can provide benefit to patients suffering an acute ischemic stroke. We believe this outcome more accurately reflects our belief that MultiStem’s treatment effects extend beyond Day 90 and is better reflected with a Day 365 assessment of recovery.

In addition, HEALIOS K.K., or Healios, our collaborator in Japan, conducted a clinical trial, TREASURE, evaluating the safety and efficacy of administration of MultiStem cell therapy for the treatment of ischemic stroke. In May 2022, Healios reported topline results for the TREASURE study. While the TREASURE trial did not reach

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statistical significance on its primary endpoint, Excellent Outcome at 90 days, it did demonstrate improvement in pre-specified measures of functional “independence” and good outcomes, such as mRS < 2, Barthel Index > 95 and Global Recovery.

The proposed adjustments to our MASTERS-2 trial, based on our Type B meeting with the FDA, will impact the timing of enrollment completion. In addition, given our liquidity issues, we have postponed initiating new clinical sites. To complete enrollment of our MASTERS-2 trial, we are dependent on our primary contract manufacturer to release clinical product. Due to these uncertainties, at this time, we are unable to predict when we will complete enrollment in our MASTERS-2 study, if at all. We will need to raise additional funding in order to complete our MASTERS-2 trial.

The Company continues to enroll patients in its MASTERS-2 trial, the Company’s pivotal Phase 3 trial evaluating MultiStem for the treatment of adults who have suffered an acute ischemic stroke. As of August 7, 2023, the Company has surpassed 2/3 patient enrollment in this 300-patient MASTERS-2 trial. As previously announced in March 2023, the Company held a Type B Meeting with the U.S. Food & Drug Administration (the “FDA”) and received approval on recommended protocol changes to the MASTERS-2 trial, including changing the Primary Endpoint to mRS Shift Analysis at Day 365 and adding an unblinded interim analysis for the purpose of study size adjustment. More than 60% of active clinical sites have implemented the FDA approved trial modifications and the Company expects the remaining clinical sites to be complete by the end of August 2023. In addition, the Company plans to conduct the unblinded interim analysis in the next few weeks and anticipates the results will be available to share in early October 2023. In addition to approving the request for an interim analysis, the FDA is allowing the Company the opportunity to perform a subset analysis.

•ARDS: In January 2019 and January 2020, we announced summary results and one-year follow up results, respectively, from our exploratory clinical study of the intravenous administration of MultiStem cell therapy to treat patients who are suffering from acute respiratory distress syndrome, or ARDS, which is referred to as the MUST-ARDS study. The study results demonstrated a predictable and favorable tolerability profile. Importantly, there were lower mortality and greater ventilator-free days. or VFD, and ICU-free days in the MultiStem-treated patient group compared to the placebo group. Average quality-of-life outcomes were higher in the MultiStem group compared to placebo through one year. In April 2019, the MultiStem cell therapy received Fast Track designation for the treatment of ARDS, and in September 2020, RMAT designation was received for the same program. In April 2020, in response to the COVID-19 pandemic, the FDA authorized the initiation of a Phase 2/3 pivotal study to assess the safety and efficacy of MultiStem therapy in subjects with moderate to severe ARDS, or the MACOVIA study. The MACOVIA study features an open-label lead-in dose escalation portion of the study, followed by double-blinded, randomized, placebo-controlled study cohorts, and the study is designed to enroll up to approximately 400 patients at leading pulmonary critical care centers throughout the United States. During 2021, we amended the protocol with the FDA to adjust the scope of the MACOVIA study to include subjects with ARDS induced by pathogens other than COVID-19. We received approval from the FDA to use MultiStem product manufactured with our bioreactor-based technology in the study, an important product development milestone. We have suspended initiating new sites and enrolling patients in the Phase 2 part of the MACOVIA trial prior to enrolling patients using our bioreactor-based technology. We now have data evaluating two different dosing levels of MultiStem. Analysis of this data will help inform the design of the next phase of the trial once we are ready to restart utilizing bioreactor manufactured MultiStem product. However, we are currently focusing resources on our MASTERS-2 study. Until we receive additional financing or establish a partnership to move forward with the next phase of the study, the MACOVIA trial has been suspended.

Further, in 2019, Healios initiated the ONE-BRIDGE study in Japan for patients with pneumonia-induced and COVID-induced ARDS and, in August 2021, Healios reported top-line data from the ONE-BRIDGE study. We and Healios have conducted thorough analyses of the data from the MUST-ARDS and ONE-BRIDGE studies. The studies had comparable patient populations receiving the same MultiStem dose amount shortly following an ARDS diagnosis. Between the studies, excluding the COVID-ARDS cohort in the ONE-BRIDGE study, 60 ARDS subjects were enrolled in the studies with 40 receiving MultiStem treatment and the remaining 20 receiving placebo or standard of care. On a pooled basis, strong trends were observed in VFD, survival, improved quality-of-life and reduction of key inflammatory biomarkers. For example, MultiStem-treated subjects had, on average, 5.5 more VFD in the first 28 days following diagnosis than non-treated subjects (p=0.07) and, on a median basis, 10.5 more VFD. In April 2022, Healios announced that, while the PMDA did not disagree with the efficacy and safety conclusions of the ONE-BRIDGE study, the PMDA advised Healios that additional supporting data is necessary for application for approval of MultiStem treatment for the ARDS indication in Japan. As a result of the guidance from the PMDA, Healios disclosed that it will continue discussions with PMDA.

•Trauma: In April 2020, the FDA authorized the initiation of a Phase 2 clinical trial evaluating MultiStem cell therapy for the early treatment of traumatic injuries and the subsequent complications that result following severe

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trauma. The trial is being conducted by UTHealth, at the Memorial Hermann-Texas Medical Center in Houston, Texas, one of the busiest Level 1 trauma centers in the United States. This study is being supported under a grant awarded to the McGovern Medical School at UTHealth from the Medical Technology Enterprise Consortium, and the Memorial Hermann Foundation is providing additional funding. We are providing the investigational clinical product manufactured with our bioreactor-based technology for the trial as well as regulatory and operational support.

Although some of our collaborators continue to engage in preclinical development and evaluation of MultiStem cell therapy in other indications for human health, we have suspended all of our own internal research efforts at this time to conserve cash and decrease expenses.

In connection with our restructuring plan, in the second quarter of 2022, we paused work performed at our Belgian subsidiary, ReGenesys, which was evaluating our cell therapy for use in treating disease and conditions in the animal health segment. We are exploring opportunities to out-license this program. The restructuring also resulted in the closing of Athersys’ ReGenesys facility in Belgium at the end of 2022, although we are still actively exploring potential business development partners for the animal health program.

On April 21, 2023, we made the decision to and notified our landlord for the facility in Stow, Ohio that we surrendered possession of the property and returned the keys to the landlord. As a result of this decision, we note there will be an impact on operating results and cash flows, the Company has determined impairment indicators exist. In the current period, we have expensed the amount that we had previously been carrying as a Right of Use Asset as a general and administrative expense in the Statements of Operations and Comprehensive Loss. Additionally, we have reclassified the full liability to be all current in the Balance Sheet. On June 9, 2023, the landlord, Seasons Business Center Four, LLC, brought suit against the Company, see further discussion in Item 1. Legal Proceedings.

We have agreements with our primary contract manufacturing organization for the manufacture of our MultiStem product candidate to supply our planned and ongoing clinical trials. In June 2022, we suspended these agreements and attempted to negotiate payment terms. On May 17, 2023, we entered into a Forbearance, Restructuring and Settlement Agreement (the “Forbearance Agreement”) with a supplier, which amends certain supply agreements between the Company and the supplier.

The Forbearance Agreement, among other things, restructures the Company’s matured and unmatured liabilities owed to the supplier under the Agreements, comprised of past due and current due obligations in the approximate amount of $20.9 million and future obligations in the approximate amount of $9.8 million, less (i) approximately $3.9 million in credits applied by the strategic supplier based upon prior agreements. The Forbearance Agreement provides that the supplier agrees to forbear from exercising rights and remedies available as a result of existing overdue amounts under the Agreements, so long as the Company pays to the supplier an aggregate of $11.8 million, in monthly payments of $0.25 million, commencing in October 2023. The Forbearance Agreement also grants the supplier a right of first refusal in the form of an exclusive option to supply 50% of all material required for the manufacture of MultiStem® (invimestrocel) and any derivative products for five years after the date that MultiStem receives regulatory approval for commercial sale. Finally, under the Forbearance Agreement, the Company is granting a limited release and exculpation of the supplier for accrued or unaccrued claims arising out of the Agreements, except that the limited release does not release: (i) any claims arising out of the supplier’s contractual warranty relating to product delivered or services performed by the supplier pursuant to the Agreements or (ii) any claims that may arise out of the performance by the supplier of its obligations under the Agreements following the effective date of the Forbearance Agreement.

Pursuant to the terms of the Forbearance Agreement, on May 17, 2023, the Company issued a convertible promissory note to the supplier in the principal amount of $15.0 million (the “Note”). The Note bears interest at a rate of 10.0% per annum, which shall be capitalized and added to the principal amount semi-annually on January 1 and July 1, commencing on July 1, 2023, and must be repaid in full, including accrued and unpaid interest thereunder, on (or before, subject to certain conditions) May 17, 2026 (the “Maturity Date”). The Note provides for customary events of default, including nonpayment, failure to comply with covenants or other agreements in the Note, certain events of bankruptcy and an adverse judgment for payment of $3.0 million or more (each, an “Event of Default”). If an Event of Default occurs, then (i) the interest on the Note shall accrue at a rate of 14.0% per annum (or, if less, the maximum rate permitted by applicable law) and (ii) the Maturity Date may be accelerated. The obligations under the Note are guaranteed by certain of the Company’s existing subsidiaries. Subject to a beneficial ownership limitation of 19.99% of the Company’s outstanding common stock and any shareholder approval requirements, the supplier may elect, at its sole discretion, to convert any outstanding principal and interest on the Note into shares of common stock of the Company at a conversion price of $1.30 per share at any time after the 18-month anniversary of the date of issuance of the Note (or upon an Event of Default) until the total outstanding balance of the Note is paid.

Financial

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We have entered into a series of agreements with Healios, our collaborator in Japan. Under the collaboration that began in 2016, Healios is responsible for the development and commercialization of the MultiStem product for the licensed fields in the licensed territories, and we provide services to Healios for which we are compensated. Each license agreement with Healios has defined economic terms, and we may receive success-based milestone payments, some of which may be subject to credits. In August 2021, we entered into a Comprehensive Framework Agreement for Commercial Manufacturing and Ongoing Support, or the Framework Agreement, with Healios, which provides for resolution of certain issues under the existing agreements between the parties and reframes our collaboration to set the stage for productive efforts as Healios and our collaboration move towards commercialization of MultiStem in Japan. It also provides Healios with deferral of certain milestone payments during the expensive initial commercial launch period. Also, we are entitled to receive tiered royalties on net product sales, as defined in the license agreements.

On August 15, 2022, the Company entered into a placement agency agreement with A.G.P./Alliance Global Partners, or A.G.P., pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P received a placement fee of approximately $0.8 million and approximately $0.1 million for the reimbursement of expenses.

On August 15, 2022, the Company entered into a securities purchase agreement, or the August 2022 Purchase Agreement, with an investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 1,200,000 shares of the Company’s common stock, (ii) pre-funded warrants, or the August 2022 Pre-Funded Warrants, exercisable for an aggregate of 720,000 shares of common stock and (iii) warrants, or the August 2022 Common Warrants, exercisable for an aggregate of 1,920,000 shares of common stock, in combinations of one share of common stock or one August 2022 Pre-Funded Warrant and one August 2022 Common Warrant for a combined purchase price of $6.25 (less $0.0025 for any August 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the August 2022 Purchase Agreement, the August 2022 Pre-Funded Warrants were exercisable upon issuance, and the August 2022 Common Warrants were exercisable upon the six-month anniversary of issuance for a five-year period. Under the August 2022 Purchase Agreement, each August 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0025 and each August 2022 Common Warrant is exercisable for one share of common stock at a price per share of $6.385. The offering closed on August 17, 2022, and the Company received net proceeds of approximately $11.0 million, after giving effect to the payment of placement fees and reimbursed expenses. On August 29, 2022, the August 2022 Pre-Funded Warrants were exercised in full.

On September 22, 2022, the Company entered into an amendment to the August 2022 Purchase Agreement, or the August 2022 Purchase Agreement Amendment, with the investor to, among other things, (i) amend the August 2022 Common Warrants to be exercisable for a seven-year period after the six-month anniversary of the closing date, (ii) reduce the standstill period, (iii) reduce the term and the amount of the participation right, and (iv) require the investor, subject to certain conditions, to participate in future offerings to sell certain securities to investors primarily for capital raising purposes.

On September 22, 2022, in consideration of the August 2022 Purchase Agreement Amendment, and without receiving any cash proceeds, the Company issued to the investor additional warrants exercisable for 2,000,000 shares of common stock, or the September 2022 Common Warrants, at a price of $6.385 for a seven-year period after the six-month anniversary of the date of issuance thereof.

On April 17, 2023, the Company amended the August 2022 Common Warrants and the September 2022 Common Warrants to, among other things, reduce the exercise price to $0.96 per share with respect to 1,920,000 shares of common stock covered by the August 2022 Common Warrants and 1,760,000 shares of common stock covered by the September 2022 Common Warrants.

On November 9, 2022, the Company entered into a placement agency agreement with A.G.P. pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P. received a placement fee of approximately $0.4 million and approximately $0.1 million for the reimbursement of expenses.

On November 9, 2022, the Company entered into a securities purchase agreement, or the November 2022 Purchase Agreement, with investors, pursuant to which the Company agreed to issue and sell, in a public offering, (i) an aggregate of 3,927,275 shares of the Company’s common stock, (ii) pre-funded warrants, or the November 2022 Pre-Funded Warrants, exercisable for an aggregate of 1,077,270 shares of common stock and (iii) warrants, or the November 2022 Common Warrants, exercisable for an aggregate of 10,009,090 shares of common stock, in combinations of one share of common stock or one November Pre-Funded 2022 Warrant and two November 2022 Common Warrants for a combined purchase price of $1.10 (less $0.0001 for any November 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the November 2022 Purchase Agreement, the November 2022 Pre-Funded Warrants and the November 2022 Common Warrants were exercisable upon issuance. Under the November 2022 Purchase Agreement, each November 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0001 and each November 2022 Common Warrant is exercisable for one share of common stock at a price per share of $1.10 for a five-year period after the date of issuance. The offering closed on

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November 10, 2022, and the Company received net proceeds of approximately $5.0 million, after giving effect to the payment of placement fees and reimbursed expenses. The November 2022 Pre-Funded Warrants were exercised in full at the closing.

On April 18, 2023, the Company entered into a securities purchase agreement, or the April 2023 Purchase Agreement, with investors, pursuant to which the Company agreed to issue and sell, in a public offering, (i) an aggregate of 2,315,000 shares of the Company’s common stock and (ii) pre-funded warrants, or the April 2023 Pre-Funded Warrants, exercisable for an aggregate of 1,370,000 shares of common stock, together with warrants, or the April 2023 Common Warrants, exercisable for an aggregate of 3,685,000 shares of common stock in a private placement, in combinations of one share or one April 2023 Pre-Funded Warrant and one April 2023 Common Warrant for a combined purchase price of $1.00, in a private placement. Subject to certain ownership limitations, the April 2023 Pre-Funded Warrants are exercisable upon issuance, and the April 2023 Common Warrants are exercisable upon the six-month anniversary of issuance. Each April 2023 Pre-Funded Warrant is exercisable for one share of common stock at a price per share of $0.0001 (as adjusted from time to time in accordance with the terms thereof) and does not expire. Each April 2023 Common Warrant is exercisable into one share of common stock at a price per share of $0.96 (as adjusted from time to time in accordance with the terms thereof) for a seven-year period after the six-month anniversary of the date of issuance. The offering closed on April 19, 2023, and the Company received net proceeds of approximately $3.4 million, after giving effect to the payment of placement fees and expenses.

In August 2021, we entered into the Framework Agreement with Healios, which provides for resolution of certain issues under the existing agreements between the parties. It also provides Healios with the deferral of certain milestone payments during the expensive initial commercial launch period. Under the Framework Agreement, we were entitled to a milestone payment in the amount of $3.0 million. Additionally, under the terms of the Framework Agreement, we were obligated to pay Healios $1.1 million by December 31, 2022. In September 2022, we received $1.9 million from Healios, which represents the milestone payment net of amounts owed to Healios. Additionally, to assist Healios with the advancement of its ischemic stroke and ARDS programs in Japan, in September 2022, we granted to Healios, subject to the terms of the licensing agreement, a non-exclusive license to make and have made MultiStem for the treatment of ischemic stroke and ARDS worldwide solely for import into Japan for use in Japan.

Results of Operations

Since our inception, our revenues have consisted of license fees, contract revenues, royalties and milestone payments from our collaborators, and grant proceeds. We have not derived revenue from our commercial sale of therapeutic products to date since we are in clinical development. In prior periods, research and development expenses consisted primarily of external clinical and preclinical study fees, manufacturing and process development costs, salaries and related personnel costs, legal expenses resulting from intellectual property prosecution processes, facility costs, restructuring charges and laboratory supply and reagent costs. We expense research and development costs as they are incurred. General and administrative expenses consist primarily of salaries and related personnel costs, professional fees, restructuring charges and other corporate expenses. We expect to continue to incur substantial losses through at least the next several years.

Three Months Ended June 30, 2023 and 2022

Revenues. Revenues for the three months ended June 30, 2023 were $48.8 thousand compared to $2.3 million for the three months ended June 30, 2022. The revenue related to 2022 was primarily associated with services provided to Healios under the Framework Agreement. At September 30, 2022, the services under the Framework Agreement are largely complete, and are limited to minimal close-out activities. Our collaboration revenues will fluctuate from period-to-period based on the services provided under our arrangement with Healios.

Research and Development Expenses. Research and development expenses decreased to $10.6 million for the three months ended June 30, 2023 from $20.8 million for the comparable period in 2022. The $10.2 million decrease is due to our restructuring plan which resulted in reduced salaries and benefits of $4.2 million, internal research supplies of $1.0 million, manufacturing costs of $9.7 million, preclinical costs of $1.5 million, outside services of $0.7 million and other research and development costs of $0.6 million, which was offset by $7.5 million related to recognizing the impairment of the right-of-use asset related to the Stow lease as a result of abandoning the facility. Our clinical development, clinical manufacturing, and manufacturing process development expenses vary over time based on the timing and stage of clinical trials underway, manufacturing campaigns for clinical trials and manufacturing process development projects. These variations in activity level may also impact our accounts payable, accrued expenses, prepaid expenses and deposits balances from period to period. Other than external expenses for our clinical and preclinical programs, we generally do not track our research expenses by project; rather, we track such expenses by the type of cost incurred.

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General and Administrative Expenses. General and administrative expenses decreased to $2.3 million for the three months ended June 30, 2023, from $5.2 million for the comparable period in 2022. The $2.9 million decrease is due to our restructuring plan which resulted in reduced salaries and benefits of $2.5 million, outside services of $0.3 million and other general and administrative costs of $0.1 million. We expect our annual 2023 general and administrative expenses to decrease compared to 2022 in connection with our restructuring plan.

Depreciation. Depreciation expense was $43,282 for the three months ended June 30, 2023 and $0.6 million for the comparable period in 2022. The decrease is due to the sale of equipment associated with the decommissioning of certain equipment as a result of our restructuring plan.

Other Income, net. Other (loss) income, net, was $0.1 million for the three months ended June 30, 2023, compared to $0.6 million for the same period in 2022. The balance in 2023 is primarily made up of gain from extinguishment of $2.6 million, loss of $1.5 million due to change in Warrant fair value, and a loss of $0.8 million due to change in fair value of the Note.

Six Months Ended June 30, 2023 and 2022

Revenues. Revenues for the six months ended June 30, 2023 were $49.1 thousand compared to $5.2 million for the six months ended June 30, 2022. The revenue for the six month ended June 30, 2022, was primarily associated with services provided to Healios under the Framework Agreement. At September 30, 2022, the services under the Framework Agreement are largely complete, and are limited to minimal close-out activities. Our collaboration revenues will fluctuate from period-to-period based on the services provided under our arrangement with Healios.

Research and Development Expenses. Research and development expenses decreased to $15.1 million for the six months ended June 30, 2023 from $41.7 million in the comparable period in 2022. The $26.6 million is due to our restructuring plan which resulted in reduced salaries and benefits of $7.9 million, internal research supplies of $3.0 million, manufacturing costs of $19.2 million, preclinical costs of $1.4 million, outside services of $1.8 million and decreases in other research and development costs of $0.8 million, which was offset by $7.5 million related to recognizing the impairment of the right-of-use asset related to the Stow lease as a result of abandoning the facility. Our clinical development, clinical manufacturing, and manufacturing process development expenses vary over time based on the timing and stage of clinical trials underway, manufacturing campaigns for clinical trials and manufacturing process development projects. These variations in activity level may also impact our accounts payable, accrued expenses, prepaid expenses and deposits balances from period to period. Other than external expenses for our clinical and preclinical programs, we generally do not track our research expenses by project; rather, we track such expenses by the type of cost incurred.

General and Administrative Expenses. General and administrative expenses decreased to $5.2 million for the six months ended June 30, 2023 from $9.3 million in the comparable period in 2022. The $4.1 million decrease is due to our restructuring plan which resulted in reduced salaries and benefits of $3.9 million, outside services of $0.1 million, and other general and administrative costs of $0.1 million. We expect our annual 2023 general and administrative expenses to decrease compared to 2022 in connection with our restructuring plan.

Depreciation. Depreciation expense of $0.1 million for the six months ended June 30, 2023 was lower compared to $0.9 million for the comparable period in 2022. The decrease is due to the sale of equipment associated with the decommissioning of certain equipment as a result of our restructuring plan.

Other Income, net. Other (loss) income, net. was $(0.4) million for the six-month period ended June 30, 2023 and $0.8 million for the comparable 2022 period. The balance in 2023 is primarily made up of gain from extinguishment of $2.6 million, loss of $2.2 million due to change in Warrant fair value, and a loss of $0.8 million due to change in fair value of the Note, offset by interest income of $0.1 million and insurance recoveries of $0.1 million.

Liquidity and Capital Resources

Our primary source of liquidity is our cash balance. At June 30, 2023, we had $1.8 million in cash and cash equivalents. We have primarily financed our operations through business collaborations, grant funding and equity financing. We conduct all of our operations through our subsidiary, ABT Holding Company. Consequently, our ability to fund our operations depends on ABT Holding Company’s financial condition and its ability to make dividend payments or other cash distributions to us. There are no restrictions such as government regulations or material contractual arrangements that restrict the ability of ABT Holding Company to make dividend and other payments to us.

Our current capital requirements depend on a number of factors, including progress in our MASTERS-2 trial, additional external costs, such as payments to contract research organizations and contract manufacturing organizations, personnel costs and the costs of filing and prosecuting patent applications and enforcing patent claims. Furthermore, continued delays in product supply caused by nonpayment to our primary contract manufacturer for our clinical trials may impact the timing and cost of such studies.

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We are entitled to receive potential milestones payments, subject to certain credits, and royalties from Healios under our licensed programs. Under the Framework Agreement, in September 2022, we received $1.9 million from Healios which represents a milestone payment in the amount of $3.0 million, net of amounts payable to Healios. We invoice Healios for certain manufacturing support services. Payments from Healios may be used by Healios to offset milestone payments that may become due in the future.

We have prepared our unaudited condensed consolidated financial statements on a going concern basis, which assumes that we will realize our assets and satisfy our liabilities in the normal course of business. However, we have incurred losses since inception of our operations in 1995, have negative operating cash flows, including in each of the last three years, and had an accumulated deficit of $676.6 million at June 30, 2023. Our losses have resulted principally from costs incurred in research and development, clinical and preclinical product development, manufacturing and process development, acquisition and licensing costs, and general and administrative costs associated with our operations. These circumstances raise substantial doubt about our ability to continue as a going concern. The accompanying unaudited condensed financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classifications of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern.

While we believe our restructuring plan will reduce costs and alleviate to some extent the conditions that raise substantial doubt, these plans are not entirely within our control and cannot be assessed as being probable of occurring. For the foreseeable future, our ability to continue our operations is dependent upon our ability to obtain additional capital, which may not be available to us on acceptable terms, on a timely basis or at all.

We expect to continue to incur substantial losses through at least the next several years and may incur losses in subsequent periods. The amount and timing of our future losses are highly uncertain. Our ability to achieve and thereafter sustain profitability will be dependent upon, among other things, successfully developing, commercializing and obtaining regulatory approval or clearances for our technologies and products resulting from these technologies.

Cash Flow Analysis

Net cash used in operating activities was $10.6 million for the six months ended June 30, 2023 compared to $36.6 million for the six months ended June 30, 2022. Net cash used in operating activities may fluctuate significantly on a quarter-to-quarter basis, as it has over the past several years, primarily due to the receipt of fees from our collaborators and payment of clinical trial costs, such as clinical manufacturing campaigns, contract research organization costs and manufacturing process development projects. These variations in activity level may also impact our accounts receivable, accounts payable, accrued expenses, prepaid expenses and deposits balances from period to period.

Net cash used in investing activities was $0.1 million for the six months ended June 30, 2023 compared to cash used of $1.8 million for the six months ended June 30, 2022. The fluctuations over the periods were due to the timing of additions to property and equipment primarily for our manufacturing process development activities in 2022 compared to significantly less investment in 2023.

Financing activities provided cash of $3.2 million and $14.4 million for the six months ended June 30, 2023 and 2022, respectively. The decrease from the comparable period is primarily related to the termination of our equity purchase agreement with Aspire Capital in July 2022. Also included in financing activities for the six months ended June 30, 2023 and June 30, 2022 are shares retained for withholding tax payments on stock-based awards.

Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements.

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Critical Accounting Policies and Management Estimates

The SEC defines critical accounting policies as those that are in management’s view, important to the portrayal of our financial condition and results of operation and demanding of management’s judgement. Our discussion and analysis of financial condition and results of operations are based on our consolidated financial statements, which have been prepared in accordance with United States generally accepted accounting principles. The preparation of these financial statements requires us to make estimates on experience and on various assumptions that we believe are reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. The following accounting estimates are deemed to be critical to us.

Stock-Based Compensation

We determine the estimated fair value of each stock option on the date of grant using the Black-Scholes option-pricing model. The expected term of stock options granted represent the period of time that stock option grants are expected to be outstanding and subsequent to June 2020, is determined based on our historical experience and patterns. Prior to June 2020, we used the “simplified” method to calculate the expected term of option grants. The risk-free interest rate is based on the U.S. Treasury yield for a period consistent with the expected term of the stock option at the time of the grant. We determine volatility by using our historical stock volatility. We account for forfeitures as they occur. We have never paid or declared dividends or paid dividends on our common stock and have no plans to do so in the foreseeable future. Changes in these assumptions may lead to variability with respect to the amount of stock compensation expense we recognize related to stock options.

Additionally, stock-based compensation for an award with a performance condition requires the judgement of management. For such awards, stock-based compensation is recognized when the achievement of such performance condition is determined to be probable. If the outcome of such performance condition is not determined to be probable or is not met, no compensation expense is recognized.

Fair Value of Warrant Liabilities

In August 2022, we entered into the August 2022 Purchase Agreement, which resulted in the issuance of common stock, the August 2022 Pre-Funded Warrants, and the August 2022 Common Warrants, exercisable for a specified price, starting after a specified period of time, and for a specified period of time after the deal had closed. The August 2022 Common Warrants meet the definition of a derivative pursuant to ASC 815, Derivatives and Hedging, and do not meet the derivative scope exception. As a result, the August 2022 Common Warrants were initially recorded as liabilities and measured at fair value using the Black-Scholes valuation model. The warrants are adjusted to fair value at the end of each quarter. The adjustment to fair value is recorded in Other Income in the Statement of Operations and Comprehensive Loss

We use a valuation expert to help us determine the fair value of the August 2022 Common Warrants, using the Black-Scholes model to estimate the fair value of the August 2022 Common Warrants. The risk-free interest rate is based on the U.S. Treasury yield for a period consistent with the expected term of the common warrants at the time of the issuance. We determine volatility by using our historical stock volatility. We have never paid or declared dividends or paid dividends on our common stock and have no plans to do so in the foreseeable future. Changes in these assumptions may lead to variability with respect to the amount of gain or loss in fair value of the August 2022 Common Warrants.

The issuance of the November 2022 Common Warrants was deemed to be equity accounting and no estimates are required for this transaction.

Fair Value of Note Payable

On May 17, 2023, we entered into a Forbearance, Restructuring and Settlement Agreement (the “Forbearance Agreement”) with a supplier, which amends certain supply agreements between the Company and the supplier. Pursuant to the terms of the Forbearance Agreement, on May 17, 2023, the Company issued a convertible promissory note to the supplier in the principal amount of $15.0 million (the “Note”).The Company has elected the fair value option under ASC 825-10-25 to measure the Note at fair value at inception and in subsequent periods, with changes in fair value reported in earnings. The Note is eligible for fair value option as it is a permissible instrument within the scope of ASC 825-10-15. As a result, the Note is recorded as a liability and measured at fair value using the Lattice Model valuation model. The Note is adjusted to fair value at the end of each quarter. The adjustment to fair value is recorded in Other Income in the Statement of Operations and Comprehensive Loss.

We use a valuation expert to assist us in determine the fair value of the Note using the Lattice Model valuation model to estimate the fair value of the Note. This model incorporates transaction detail such as the term of the Note, the nominal value of the Note at inception, the coupon rate of the Note, the conversion price of the Note, the Company’s stock price, risk-free rate and implied bond yield as well as volatility. The Company’s stock is a publicly traded stock and is readily determinable. The risk-free interest rate is based on the U.S. Treasury yield for a period consistent with the expected term of the Note. We determine volatility by using our historical stock volatility. The implied bond yield is based on the required rate of return for

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mezzanine financing of similar companies. Changes in these assumptions may lead to variability with respect to the amount of gain or loss in fair value of the Note.

Refer to Note C, Accounting Policies, in the notes to consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2022, for a discussion of our accounting policies and recently issued accounting standards.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

There were no material changes in our exposure to market risk since the disclosure included in Management’s Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2022.

Item 4. Controls and Procedures.

Disclosure controls and procedures

Our management, under the supervision of and with the participation of our Chief Executive Officer and our interim Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), as of the end of the period covered by this Quarterly Report on Form 10-Q. Based upon this evaluation, our Chief Executive Officer and interim Chief Financial Officer have concluded that, as of the end of the period covered by this Quarterly Report on Form 10-Q, certain of our disclosure controls and procedures were not effective due to material weaknesses in internal control over financial reporting, as a result of insufficient resources with appropriate knowledge and expertise to design, implement, document and operate effective internal controls over financial reporting relating to complex transactions, including accounting for the issuance of convertible notes.

Remediation Efforts to Address Disclosed Material Weakness

Our management, with oversight from our audit committee, is in the process of implementing steps to use third party specialists to assist with accounting and finance technical issues as needed.

Changes in internal control over financial reporting

During the last fiscal quarter covered by this Quarterly Report on Form 10-Q, there has been a change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

As of June 30, 2023, management has concluded that there was a material weakness as described above in “Disclosure controls and procedures”.

Inherent limitations

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. All internal control systems, no matter how well designed, have inherent limitations. Therefore, even those systems determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation. Because of the inherent limitations of internal control, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting.

However, these inherent limitations are known features of the financial reporting process. Therefore, it is possible to design into the process safeguards to reduce, though not eliminate, this risk.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings.

From time to time, the Company is involved in various disputes and litigation matters that arise in the ordinary course of business. On June 9, 2023, the landlord, Seasons Business Center Four, LLC, brought suit against the Company in the Summit County, Ohio Court of Common Pleas asserting claims for Breach of Contract (Lease), Promissory Estoppel, and Unjust Enrichment relating to the subject Lease between the parties. The amount sought is undetermined but in excess of $25,000. The Company filed its Answer and Affirmative Defenses by the August 15, 2023 deadline and defend against the claims asserted.

Item 1A. Risk Factors.

In addition to the other information set forth elsewhere in this Quarterly Report on Form 10-Q, you should carefully consider the risk factors set forth below and the other risk factors discussed in Part I, Item 1A “Risk Factors” of the Company’s Annual Report on Form 10-K for the year ended December 31, 2022. Those factors, if they were to occur, could cause our actual results

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to differ materially from those expressed in our forward-looking statements in this report, and materially adversely affect our financial condition or future results. Although we are not aware of any other factors that we currently anticipate will cause our forward-looking statements to differ materially from our future actual results, or materially affect the Company’s financial condition or future results, additional risks and uncertainties not currently known to us or that we currently deem to be immaterial might materially adversely affect our actual business, financial condition and/or operating results.

There is substantial doubt about our ability to continue as a going concern, which may affect our ability to obtain future financing and may require us to curtail our operations. We will need substantial additional funding to develop our products and for our future operations. If we are unable to obtain the funds necessary to do so, we may be required to further delay, scale back or eliminate our product development activities or may be unable to continue our business.

The audited financial statements and accompanying notes presented in our Annual Report on Form 10-K for the year ended December 31, 2022 include disclosures and an opinion from our independent registered public accounting firm stating that our recurring losses and negative cash flows from operations raise substantial doubt about our ability to continue as a going concern. Our financial statements as of December 31, 2022 and 2021 were prepared under the assumption that we will continue as a going concern and do not include any adjustments that might result from the outcome of this uncertainty.

The development of our product candidates will require a commitment of substantial funds to conduct the research, which may include preclinical and clinical testing, necessary to obtain regulatory approvals and bring our products to market. Net cash used in our operations was $59.0 million in 2022, $76.2 million in 2021 and $61.8 million in 2020.

At December 31, 2022, we had $9.0 million of cash and cash equivalents. As of June 30, 2023, we had accounts payable of $8.7 million, of which approximately 71% is owed to a supplier, that was subsequently agreed to be settled for a convertible note, and we only had cash and cash equivalents of $1.8 million. Accordingly, we will need substantially more funding to advance our product candidates through development and into commercialization, including to put in place manufacturing capacity to support such commercial activity. Our future capital requirements will depend on many factors, including:

•our ability to raise capital to fund our operations;

•the progress, scope, costs and results of our clinical and preclinical testing of any current or future product candidates;

•the possibility of delays in, adverse events of and excessive costs of the development process;

•the cost of manufacturing our product candidates;

•the cost of prosecuting, defending and enforcing patent claims and other intellectual property rights;

•the time and cost involved in obtaining regulatory approvals;

•expenses related to complying with cGMP of therapeutic product candidates;

•costs of financing or acquiring additional capital equipment and development technologies;

•competing technological and market developments;

•our ability to establish and maintain collaborative and other arrangements with third parties to assist in bringing our products to market and the cost of such arrangements;

•the amount and timing of payments or equity investments that we receive from collaborators or changes in or terminations of future or existing collaboration and licensing arrangements and the timing and amount of expenses we incur to support these collaborations and license agreements;

•costs associated with the integration of any new operation, including costs relating to future mergers and acquisitions with companies that have complementary capabilities;

•expenses related to the establishment of sales and marketing capabilities for products awaiting approval or products that have been approved;

•expenses related to establishing manufacturing capabilities;

•the level of our sales and marketing expenses; and

•our ability to introduce and sell new products.

We have secured capital historically from grant revenues, collaboration proceeds and debt and equity offerings. We will need to secure substantial additional capital to fund our future operations. We cannot be certain that additional capital will be available on acceptable terms or at all. To the extent we raise additional capital through the sale of equity securities, the ownership position of our existing stockholders could be substantially diluted. If additional funds are raised through the issuance of

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preferred stock or debt securities, these securities are likely to have rights, preferences and privileges senior to our common stock. Fluctuating interest rates could also increase the costs of any debt financing we may obtain.

Importantly, we expect that the results of our MASTERS-2 clinical trial, will have a significant impact, favorable or unfavorable, on our ability to access capital from potential third-party commercial partners or the equity capital markets. Depending on the nature of these results, we may accelerate or may delay certain programs. In the longer term, we will have to continue to generate additional capital to meet our needs until we would become cash flow positive as a result of the sales of our clinical products, if they are approved for marketing.

Failure to successfully address ongoing liquidity requirements will have a material adverse effect on our business. If we are unable to obtain additional capital on acceptable terms when needed, we may be required to take actions that harm our business and our ability to achieve cash flow in the future, including possibly the surrender of our rights to some technologies or product opportunities, delaying our clinical trials or curtailing or ceasing operations.

We are not currently in compliance with Nasdaq’s continued listing requirements. If we are unable to comply with Nasdaq’s continued listing requirements, our common stock could be delisted, which could affect the price of our common stock and liquidity and reduce our ability to raise capital.

Our common stock is currently listed on The Nasdaq Capital Market. The Nasdaq Capital Market has established certain quantitative criteria and qualitative standards that companies must meet to remain listed for trading on this market.

On October 14, 2022, we received a written notice (the “October 2022 Notice”) from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) that we are not in compliance with the requirement to maintain a minimum market value of listed securities of $35 million, as set forth in Nasdaq Listing Rule 5550(b)(2) (the “Market Value Standard”) because the market value of our common stock was below $35 million for 30 consecutive business days. The October 2022 Notice does not impact the listing of the common stock on The Nasdaq Capital Market at this time.

The October 2022 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(C), the Company has a period of 180 calendar days from the date of the October 2022 Notice, or until April 12, 2023, to regain compliance under the Market Value Standard.

On April 13, 2023, we received notice from The Nasdaq Stock Market that we had not regained compliance with the Market Value Standard. On April 14, 2023, we filed our request for a hearing, which was held before the Nasdaq Hearing Panel (the “Panel”) on May 18, 2023.

On June 26, 2023, the Panel notified the Company that it had granted our request for an exception through September 15, 2023, to the continued listing requirements, subject to the Company demonstrating compliance with the Market Value Standard by September 15, 2023.

There can be no assurance that the Company will be able to regain compliance with the Market Value Standard, or will otherwise be in compliance with other Nasdaq listing criteria. While the Company is exercising diligent efforts to maintain the listing of the Company’s common stock on The Nasdaq Capital Market, there can be no assurance that the Company will be able to regain or maintain compliance with Nasdaq listing criteria. If the Company fails to regain compliance with Nasdaq’s continued listing standards during the exception period granted by the Panel, our common stock will be subject to delisting from Nasdaq. Any delisting of our common stock could adversely affect the market liquidity of our common stock and the market price of our common stock could decrease. Furthermore, if our common stock were delisted it could adversely affect our ability to obtain financing for the continuation of our operations and our ability to attract and retain employees by means of equity compensation and/or result in the loss of confidence by investors.

In addition, on July 28, 2023, we received a written notice (the “July 2023 Notice”) from Nasdaq that the Company is not in compliance with the requirement to maintain a minimum closing bid price of $1.00 per share, as set forth in Nasdaq Listing Rule 5550(a)(2) (the “Bid Price Requirement”), because the closing bid price of the Company’s common stock was below $1.00 per share for 30 consecutive business days for the period of June 14, 2023 through July 27, 2023. The July 2023 Notice does not impact the listing of the common stock on The Nasdaq Capital Market at this time.

The July 2023 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has a period of 180 calendar days from the date of the July 2023 Notice, or until January 24, 2024, to regain compliance with the Bid Price Requirement. During this period, our common stock will continue to trade on The Nasdaq Capital Market. If at any time before January 24, 2024, the bid price of our common stock closes at or above $1.00 per share for a minimum of ten consecutive trading days, Nasdaq will provide written notification that the Company has achieved compliance with the Bid Price

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Requirement and the matter will be closed. However, under Nasdaq Listing Rule 5810(c)(3)(A), Nasdaq may exercise its discretion to extend this ten day period as discussed in Rule 5810(c)(3)(H).

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

None.

Item 3. Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

Item 6. Exhibits.

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Exhibit No.

Description

3.1

Certificate of Incorporation of Athersys, Inc., as amended as of June 20, 2013 (incorporated herein by reference to Exhibit 3.1 to the registrant’s Quarterly Report on Form 10-Q (Commission No. 001-33876) filed with the Commission on May 8, 2019).

3.2

Certificate of Amendment to Certificate of Incorporation of Athersys, Inc., as amended as of June 7, 2017 (incorporated herein by reference to Exhibit 3.1 to the registrant’s Quarterly Report on Form 10-Q (Commission No. 001-33876) filed with the Commission on August 9, 2017).

3.3

Bylaws of Athersys, Inc., as amended and restated as of March 13, 2019 (incorporated herein by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on March 14, 2019).

3.4

Certificate of Amendment to Certificate of Incorporation of Athersys, Inc., as amended, effective as of June 16, 2021 (incorporated herein by reference to Exhibit 3.3 to the registrant’s Registration Statement on Form S-3 (Commission No. 333-257409) filed with the Commission on June 25, 2021).

3.5

Certificate of Amendment to Certificate of Incorporation of Athersys, Inc., as amended, effective as of August 26, 2022 (incorporated herein by reference to Exhibit 3.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on August 29, 2022).

4.1

Form of Pre-Funded Warrant (incorporated herein by reference to Exhibit 4.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

4.2

Form of Warrant (incorporated herein by reference to Exhibit 4.2 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

4.3

Form of Warrant Amendment No. 1 to Common Stock Purchase Warrant(incorporate herein by reference to Exhibit 4.3 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

4.4

Form of Warrant Amendment No. 2 to Common Stock Purchase Warrant (incorporate herein by reference to Exhibit 4.4 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

4.5

Form of Convertible Promissory Note, dated May 17, 2023 (incorporated herein by reference to Exhibit 4.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on May 23, 2023).

10.1

Form of Securities Purchase Agreement, dated as of April 18, 2023, between the Company and each purchaser named in the signature pages thereto (incorporated herein by reference to Exhibit 10.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

10.2*

Forbearance, Restructuring and Settlement Agreement, dated as of May 17, 2023, between Athersys, Inc., certain subsidiaries of Athersys, Inc., and Lonza

31.1*

Certification of Daniel Camardo,Chief Executive Officer, pursuant to SEC Rules 13a-14(a) and 15d-14(a) adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*

Certification of Kasey Rosado, interim Chief Financial Officer, pursuant to SEC Rules 13a-14(a) and 15d-14(a) adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1**

Certification of Daniel Camardo, Chief Executive Officer, and Kasey Rosado, interim Chief Financial Officer, pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

99.1

Placement Agency Agreement, dated as of April 18, 2023, between the Company and A.G.P./Alliance Global Partners (incorporated herein by reference to Exhibit 99.1 to the registrant’s Current Report on Form 8-K (Commission No. 001-33876) filed with the Commission on April 18, 2023).

101

The following materials from Athersys’ Quarterly Report on Form 10-Q for the period ended June 30, 2023, are formatted in Inline XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Balance Sheets; (ii) the Condensed Consolidated Statements of Operations and Comprehensive Loss; (iii) the Condensed Consolidated Statements of Stockholders’ Equity; (iv) the Condensed Consolidated Statements of Cash Flows; (v) Notes to Unaudited Condensed Consolidated Financial Statements; and (vi) document and entity information.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document and contained in Exhibit 101).


*			Filed herewith

The certification attached as Exhibit 32.1 accompanying this quarterly report on Form 10-Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, shall not be deemed “filed” by the registrant for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


						ATHERSYS, INC.


Date: August 16, 2023						/s/ Daniel Camardo
						Daniel Camardo
						Chief Executive Officer and Duly Authorized Officer

Date: August 16, 2023						/s/ Kasey Rosado
						Kasey Rosado
						Interim Chief Financial Officer

EXHIBIT 10.2

FORBEARANCE, RESTRUCTURING AND SETTLEMENT AGREEMENT

This forbearance, restructuring and settlement agreement (the “Agreement”), dated as of May 17, 2023 (the “Effective Date”) by and between (i) LONZA NETHERLANDS B.V. (“LNL”) and LONZA BIOSCIENCE SINGAPORE LTD (“LBSS”; together with LNL, “Lonza“); (ii) ATHERSYS, INC. (“Athersys”); (iii) ABT HOLDING COMPANY (“ABT”); and (iv) ADVANCED BIOTHERAPEUTICS, INC. (“ABI,” and together with Athersys and ABT, the “Athersys Parties”); (iv) REGENESYS BV, REGENESYS LLC, REGENESYS EU NV, ATHERSYS GK, and ATHERSYS LTD. (collectively, the “Athersys Affiliates”) (each of Lonza and the Athersys Parties, a “Party“ and collectively the “Parties”), sets forth the terms upon which the Parties and Athersys Affiliates have agreed to settle the matters described below:

RECITALS

WHEREAS LNL and ABT entered into a certain Manufacturing Services Agreement, effective as of May 1, 2021, (the “LNL MSA”);

WHEREAS LBSS and ABT entered into a certain Manufacturing Services Agreement, effective as of February 1, 2021, (“LBSS MSA”; together with the LNL-MSA and all statements of work thereunder and invoices issued pursuant thereto, the “MSAs”);

WHEREAS on June 16, 2022, LNL issued a demand letter to ABT for payment of overdue amounts under the MSAs totalling € 3,255,895 as of the date of the demand letter;

WHEREAS on June 27, 2022, ABT issued letters notifying Lonza, among other things, that one or more Athersys Parties had determined to suspend all activities under Section 9.6 of the LNL MSA and Section 8.1 of the LBSS MSA from June 27, 2022 until August 15, 2022;

WHEREAS, Lonza has determined that on or about the date of this agreement, ABT’s aggregate matured and unmatured liabilities to Lonza under the MSAs are in excess of

$30.7 million, comprised of past due and current due obligations in the approximate amount of $20.9 million and future obligations in the approximate amount of $9.8 million, less (i) a $2.75 million credit applied by Lonza in respect of the final ten (10) batches deliverable pursuant to the MSAs, and (ii) application by Lonza of a $1.210 million credit amount previously agreed to by Lonza and ABT in respect of putative “failed batches” (such net amount, the “ABT Obligations”);

WHEREAS, Athersys and ABT have informed Lonza that they wish to restructure the ABT Obligations to, among other reasons, relieve demands upon the ABT’s and Athersys’s liquidity and access to capital markets; obtain Lonza’s agreement to forbear from exercising remedies with respect to past due indebtedness, restructure past due indebtedness, and obtain further deliveries of materials from Lonza; and Lonza has agreed upon the terms and subject to the conditions set forth in this Agreement;

WHEREAS all of the Athersys Parties and Athersys Affiliates are part of an integrated enterprise and will benefit from further delivery of materials from Lonza and from the improvements to the financial condition of the entire enterprise that the Athersys Parties will realize from this Agreement;

NOW, THEREFORE, in consideration of the promises and mutual covenants contained herein and other valuable considerations, the receipt and sufficiency of which are hereby acknowledged, it is stipulated and agreed by and between the Parties and Athersys Affiliates, as follows:

- 2 -

1.Payments; Debt Restructuring; and Client Equipment.

1.Cash Payments. ABT shall pay Eleven Million Eight Hundred Thousand Dollars ($11,800,000) to Lonza in monthly payments of Two Hundred Fifty Thousand Dollars ($250,000) (each payment of $250,000, a “Cash Payment,” and collectively, the “Cash Payments”). Each Cash Payment shall be made on or before the last day of each calendar month commencing October 2023; provided, however, in the reasonable discretion and at the request of ABT, Lonza shall credit the outstanding balance of the Cash Payments by reducing either such total balance or any Cash Payment, in ABT’s discretion, dollar-for-dollar by the amount of (i) any prepayments made by ABT to Lonza or (ii) any amounts received by Lonza in connection with a transaction pursuant to which any person purchases, uses, or obtains the right to use any assets or services of Lonza that have been paid for by ABT and to which ABT has the exclusive right to use or otherwise exploit under the MSAs. The first Cash Payment is due October 31, 2023.

2.Convertible Note. On the Effective Date, Athersys shall (i) make and issue, and ABT and ABI shall guaranty, a convertible note in the initial principal amount of Fifteen Million Dollars ($15,000,000) million in the form annexed hereto as Exhibit A (the “Convertible Note,” and together with the Cash Payments, the “Restructured Payments”), and (ii) deliver the Convertible Note to Lonza (or, if directed, Lonza’s designee). The Convertible Note and its terms are made a part of this Agreement, and references to this Agreement shall include the Convertible Note and its terms.

3.Notwithstanding anything to the contrary set forth in the MSAs, Lonza shall be entitled to use “CLIENT Equipment” and “CLIENT Specific Equipment” as defined in the MSAs and applicable Statements of Work thereunder for any purpose, including for

- 3 -

LONZA’s internal use or for services performed for other customers, beginning as of the Effective Date and for as long as such CLIENT Equipment or CLIENT Specific Equipment, respectively, is in Lonza’s possession pursuant to the MSAs and applicable Statements of Work thereunder.

4.The Parties agree that, only so long as ABT is not in default of the terms of this Agreement:

a.Lonza will forbear from exercising any and all default remedies under the MSAs;

b.the Restructured Payments shall be in lieu of, and shall satisfy in their entirety, the ABT Obligations; and

c.Except for the ABT Obligations and the obligations and terms of this Agreement, ABT shall not be liable for any fees under the MSAs accruing from the date hereof other than storage fees.

5.Any Cash Payment that is not paid when due shall be subject to interest at the rate of 10% per annum running from the date of the last Cash Payment that was made by or on behalf of ABT (or, if less, the maximum rate permitted by applicable law). Any interest that becomes due shall be in addition to the amounts set forth in Section 1(A). Lonza shall notify Athersys of any delinquent Cash Payment, which notice may be via electronic mail only sent to the address(es) specified below. In the event any Cash Payment remains unpaid for more than 60 days following the date such Cash Payment was due, Lonza shall have the right to declare the entire remaining balance of Cash Payments immediately due and payable without further notice. This Section 1(D) and the Convertible Note constitute the sole and entire agreement between the parties with respect to interest on the ABT Obligations and supersedes all prior and

- 4 -

contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter, including but not limited to Section 9.8 of the LNL MSA and Section 8.5 of the LBSS MSA.

6.Notwithstanding anything to the contrary contained herein, payment of the balance of the Cash Payments shall automatically become immediately due and payable upon the commercial readiness and manufacturing of ABT.

2.Right of First Refusal. Each of the Athersys Parties and Athersys Affiliates hereby grants to Lonza the exclusive option (but not the obligation) to supply 50% of all material required for the manufacture of MultiStem® (invimestrocel) and any derivative products (“MultiStem”) for the period running from the Effective Date until the date that is five (5) years after the date that MultiStem receives regulatory approval for commercial sale. The Athersys Parties and Athersys Affiliates agree to notify Lonza about all activities beyond the clinical stage for the commercial exploitation of MultiStem. In the event any Athersys Parties or Athersys Affiliates sell, assign, transfer or license rights to develop, manufacture, sell or distribute Multi-Stem to any other party, such sale, assignment, transfer or license shall be expressly subject to Lonza’s supply rights described herein.

3.Release and Exculpation of Lonza Parties.

A. Upon the occurrence of the Effective Date, each of the Athersys Parties and Athersys Affiliates, on behalf of themselves and, to the fullest extent permitted by law, each of their respective current and former affiliates, successors, partnerships, and related parties and persons, release and discharge Lonza and each of their respective current and former parents, affiliates, related parties, insiders, agents, member, subsidiaries, successors, predecessors, assignors and assigns, and each of their respective current and former officers, directors,

- 5 -

employees, agents, assigns, assignees, affiliates, members, partnerships, partners, trustees, trusts, and attorneys (the “Lonza Released Parties”), from any and all known and unknown claims, debts, disputes, demands, rights, actions or causes of action, liabilities, damages, losses, obligations, sums of money due, judgments, suits, amounts, matters, issues and charges of any kind whatsoever (including, but not limited to, any claims for interest, attorneys’ fees, and any other costs, expenses, amounts, or liabilities whatsoever), whether fixed or contingent, accrued or unaccrued, liquidated or unliquidated, at law or in equity, matured or unmatured, foreseen or unforeseen, whether individual or derivative in nature, whether arising under federal or state statutory, common, or administrative law, or any other law, rule, or regulation, whether foreign or domestic, whether or not apparent or yet to be discovered, or which may hereafter develop, including without limitation those arising out of or relating to the MSAs and the transactions relating to the MSAs, including without limitation the negotiation of and entry into this Agreement, running from the beginning of time through the Effective Date, provided, however, that nothing in the preceding sentence shall release or expand any applicable warranty relating to product delivered or services performed by Lonza pursuant to the MSAs, and provided further that nothing herein shall release any claims that may arise out of the post-Effective Date performance by Lonza of its obligations under the MSAs (as modified by this Agreement, including the Convertible Note). To the extent any liability may otherwise exist under the terms of the MSAs, Lonza shall not be liable for any incidental, indirect, special or consequential damages of any nature whatsoever, including, but not limited to, loss of anticipated profits, occasioned by a breach of any provision of an MSA.

B. Neither the Lonza Released Parties, nor any of their respective direct and indirect officers, directors, trustees, members and managing members or employees (acting in

- 6 -

such capacity) nor any professional person employed by any of them (including attorneys and financial advisors) (collectively, “Exculpated Parties”), shall have or incur any liability to any entity for any action taken or omitted to be taken in connection with or related to the negotiation, formulation, preparation, dissemination, confirmation, performance or consummation of this Agreement (including the Convertible Note), the Athersys Parties’ and Athersys Affiliates’ restructuring efforts, or any contract, instrument, release or other agreement or document created or entered into, or any other action taken or omitted to be taken in connection with this Agreement and the Convertible Note or in furtherance of such restructuring efforts, this Agreement or the Convertible Note. Each Exculpated Party shall be entitled to rely upon the advice of counsel concerning his, her, or its duties pursuant to, or in connection with, the Agreement and the Convertible Notes, or any other related document, instrument, or agreement, except in the case of actual fraud, gross negligence, or willful misconduct.

4.Representations and Warranties. To induce Lonza to enter into this Agreement, each of the Athersys Parties and Athersys Affiliates hereby represents and warrants that:

1.The execution, delivery and performance by the Athersys Parties and Athersys Affiliates of this Agreement and Convertible Note are (i) within such party’s corporate power and have been duly authorized by all necessary organizational and shareholder or director or membership action, (ii) do not contravene any provision of the party’s charter or bylaws or equivalent organizational or other constituent documents, (iii) do not violate any law or regulation, or any order or decree of any court or governmental authority, (iv) do not conflict with or result in the breach or termination of, constitute a default under or accelerate or permit the acceleration of any performance required by, any indenture, mortgage, deed of trust, lease,

- 7 -

agreement or other instrument to which any Athersys Party or Athersys Affiliate is a party or by which it or any of their property is bound, and (v) do not require the consent or approval of any governmental authority or any other person.

2.This Agreement and the Convertible Note have been duly executed and delivered by or on behalf of the Athersys Parties and Athersys Affiliates.

3.Each of this Agreement and the Convertible Note constitutes a legal, valid and binding obligation of the Athersys Parties and Athersys Affiliates to the extent they are parties thereto, enforceable against the Athersys Parties and Athersys Affiliates in accordance with its terms.

4.All representations and warranties of the Athersys Parties and Athersys Affiliates contained in this Agreement and the Convertible Note, as applicable, are true and correct as of the date hereof with the same effect as though such representations and warranties had been made on and as of the date hereof. All of the Athersys Parties and Athersys Affiliates representations and warranties contained in this Agreement shall survive the execution, delivery and acceptance of this Agreement by the parties hereto.

5.This Agreement has been entered into without force or duress, of the free will of the Athersys Parties and Athersys Affiliates. The decision of the Athersys Parties and Athersys Affiliates to enter into this Agreement is a fully informed decision and each is aware of all legal and other ramifications of such decision.

6.The Athersys Parties and Athersys Affiliates have read and understands this Agreement and the Convertible Note, has consulted with and been represented by legal counsel in connection herewith, and has been advised by its counsel of its rights and obligations hereunder and thereunder.

- 8 -

7.The Athersys Parties and Athersys Affiliates, as of the date hereof and the Effective Date, have no knowledge of any claim of any kind that any of them, or any party claiming by or through any of them, has against any of the Lonza Released Parties for any damages relating to the performance of any Lonza Released Parties under or relating to the MSAs.

5.Notices. Except as otherwise provided herein, all Notices hereunder shall be deemed given if in writing and delivered by registered or certified mail, or by overnight courier, to the following addresses:

If to Lonza:

Lonza Netherlands B.V.

Attn: Site Head

Urmonderbaan 20B

6167 RD Geleen

The Netherlands

and

Lonza Group Ltd.

Attn: Group General Counsel

Münchensteinerstrasse 38

CH-4002 Basel

Switzerland

If to Athersys Parties and Athersys Affiliates:

Daniel Camardo

Chief Executive Officer

ABT Holding Company

3201 Carnegie Avenue

Cleveland, OH 44115

and

Riccardo DeBari, Esq.

Thompson Hine LLP

300 Madison Avenue

27th Floor

New York, NY 10017

6.Entire Agreement. This Agreement, including the Convertible Note, contains the entire understanding of the Parties and Athersys Affiliates with regard to the subject

- 9 -

matter contained herein. This Agreement supersedes all prior or contemporaneous negotiations, promises, covenants, agreements and representations of every nature whatsoever with respect to the matters referred to in this Agreement, all of which have become merged and finally integrated into this Agreement. Each of the Parties and Athersys Affiliates understands that in the event of any subsequent litigation, controversy or dispute concerning any of the terms, conditions or provisions of this Agreement, no party shall be entitled to offer or introduce into evidence any oral promises or oral agreements between or among the Parties and Athersys Affiliates relating to the subject matter of this Agreement not included or referred to herein and not reflected by a writing included or referred to herein. In the event this Agreement conflicts with the MSAs, the terms of this Agreement shall govern. Other than as set forth herein, the Parties acknowledge and agree that all rights and obligations under the MSAs shall remain in effect. Further, notwithstanding the foregoing, Lonza acknowledges and agrees that nothing in this Agreement shall preclude Lonza from releasing to ABT after the Effective Date all completed clinical batches pursuant to and in accordance with the MSAs so long as none of the Athersys Parties or Athersys Affiliates is in default of this Agreement.

7.Additional Terms. Any single or partial exercise of any right under this Agreement shall not preclude other or further exercise thereof or the exercise of any other right, and no waiver, amendment or other variation of the terms, conditions or provisions of this Agreement whatsoever shall be valid unless in writing signed by Lonza and the Athersys Parties, and then only to the extent as set forth in such writing. The failure of any party to enforce at any time any provision of this Agreement shall not be construed to be a waiver of such provisions, nor in any way to affect the validity of this Agreement or any part hereof or the right of such party thereafter to enforce each and every such provision. No waiver of any breach of this

- 10 -

Agreement shall be held to constitute a waiver of any other or subsequent breach. This Agreement is solely for the benefit of the parties hereto and is not intended to confer upon any other third party any rights or benefit.

8.Counterparts. This Agreement may be executed in any number of counterparts by the Parties and Athersys Affiliates on different counterpart signature pages, all of which taken together shall constitute one and the same agreement. Any of the Parties and Athersys Affiliates may execute this Agreement by signing any such counterpart and each of such counterparts shall for all purposes be deemed an original. This Agreement may be executed by facsimile and/or email (in PDF) which shall have the same force and effect as an original signature.

9.Governing Law/Jurisdiction. This Agreement and the rights and duties of the Parties and Athersys Affiliates hereunder shall be governed and construed, enforced and performed in accordance with the internal laws of the Delaware without giving effect to principles of conflicts of law that would require the application of laws of another jurisdiction. Each of the Parties and Athersys Affiliates irrevocably submits to the jurisdiction of the courts of the State of New York and of the United States sitting in the State of New York, and of the courts of its own corporate domicile with respect to actions or proceedings brought against it as a defendant, for purposes of all proceedings. Any process or summons for purposes of any proceeding may be served on the applicable Party or Athersys Affiliate by mailing a copy thereof by registered mail, or a form of mail substantially equivalent thereto, addressed to it at its address as provided for notices under this Agreement.

10.No Admission of Liability. This Agreement is in compromise of the disputes between the Parties and shall not be construed as an admission of liability or fault by

- 11 -

any of the Parties or any of their respective present or former directors, officers, employees or agents, which such liability is expressly denied.

11.Mutual Draftsmanship. The Parties and Athersys Affiliates acknowledge and agree that the drafting of this Agreement is a mutual effort among the Parties and Athersys Affiliates and their counsel and that this Agreement is not to be construed against any party as the drafter.

12.Severability. If any provision of this Agreement is invalid or unenforceable, then, to the fullest extent permitted by law: (i) the Parties shall attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor, and upon so agreeing shall incorporate such substitute provision into this Agreement; (ii) the other provisions herein shall remain in full force and effect; and (iii) the invalidity or unenforceability of any provisions hereof shall not affect the validity or enforceability of such other provisions.

13.Headings. The headings of paragraphs contained in this Agreement are for convenience only and shall not be deemed to control or affect the meaning or construction of any provision of this Agreement.

14.Interest Rate Limitation. Notwithstanding anything to the contrary contained in this Agreement, any interest paid or agreed to be paid under this Agreement shall not exceed the maximum rate of non-usurious interest permitted by applicable law (the “Maximum Rate”). If Lonza (or any successor or assignee) shall receive interest in an amount that exceeds the Maximum Rate, the excess interest shall be applied to the principal amount remaining owed under this Note or, if it exceeds such unpaid principal amount, refunded to the payor. In determining whether the interest contracted for, charged, or received by Athersys exceeds the Maximum Rate, Athersys may, to the extent permitted by applicable law, (i)

- 12 -

characterize any payment that is not principal as an expense, fee, or premium rather than interest, (ii) exclude voluntary prepayments and the effects thereof, and (iii) amortize, prorate, allocate and spread in equal or unequal parts the total amount of interest throughout the contemplated term of this Agreement.

[Remainder of page intentionally left blank.]

- 13 -

IN WITNESS THEREOF, the Parties and Athersys Affiliates hereto have executed and delivered this Agreement as of the date first written above.

ATHERSYS, INC.

By:_/s/ Daniel Camardo

Name: Daniel Camardo

Title: Chief Executive Officer

Dated: 05/15/2023

ABT HOLDING COMPANY

By: ATHERSYS, INC., as Parent company of

ABT HOLDING COMPANY

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

ADVANCED BIOTHERAPEUTICS, INC.

By: ATHERSYS, INC., as Parent company of

ADVANCED BIOTHERAPEUTICS, INC.

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

REGENESYS BV

By: ATHERSYS, INC., as Parent company of

REGENESYS BV

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

REGENESYS LLC

By: ATHERSYS, INC., as Parent company of

REGENESYS LLC

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

REGENESYS EU NV

By: ATHERSYS, INC., as Parent company of

REGENESYS EU NV

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

ATHERSYS GK

By: ATHERSYS, INC., as Parent company of

ATHERSYS GK

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

ATHERSYS LTD.

By: ATHERSYS, INC., as Parent company of

ATHERSYS LTD.

By:_/s/ Daniel Camardo_____________________

Name:_Daniel Camardo___________________

Title:_Chief Executive Officer________________

Dated:_5/15/2023___________________

- 15 -

LONZA NETHERLANDS B.V.

By:_/s/ Michael Stanek_____________________

Name:_Michael Stanek___________________

Title:General Counsel EMA___________________

Dated: 17-Mai-2023 | 08:26:00 MESZ__

LONZA BIOSCIENCE SINGAPORE PTE LTD

By:_/s/ Chong Meng Chai /s/ Teo Kui Lian

Name:_Chong Meng Chai Teo Kui Lian___

Title:_Vice President, Site Head Director

Dated:17-May-2023 | 08:44:51 CEST 17-May-2023 | 08:34:52 CEST

- 16 -

EXHIBIT A

CONVERTIBLE NOTE

- 17 -

EXHIBIT 31.1

CERTIFICATIONS

I, Daniel Camardo., certify that:

1.I have reviewed this quarterly report on Form 10-Q of Athersys, Inc.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have

(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: August 16, 2023

/s/ Daniel Camardo
Daniel Camardo
Chief Executive Officer

EXHIBIT 31.2

CERTIFICATIONS

I, Kasey Rosado, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Athersys, Inc.;

(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: August 16, 2023

/s/ Kasey Rosado
Kasey Rosado
Interim Chief Financial Officer

EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Athersys, Inc. (the “Company”) on Form 10-Q for the quarter ended June 30, 2023, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned officers of the Company certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to such officer’s knowledge:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company as of the dates and for the periods expressed in the Report.


Date: August 16, 2023

									/s/ Daniel Camardo
									Name: Daniel Camardo
									Title: Chief Executive Officer


Date: August 16, 2023

									/s/ Kasey Rosado
									Name: Kasey Rosado
									Title: Interim Chief Financial Officer

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure document.

Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 30, 2023	Aug. 09, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
Document Transition Report	false
Entity File Number	001-33876
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-4864095
Entity Address, Address Line One	3201 Carnegie Avenue,
Entity Address, City or Town	Cleveland,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	44115-2634
City Area Code	216
Local Phone Number	431-9900
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	ATHX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		22,501,410
Amendment Flag	false
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Registrant Name	ATHERSYS, INC / NEW
Entity Central Index Key	0001368148
Current Fiscal Year End Date	--12-31

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 1,803	$ 9,038
Prepaid clinical trial costs	0	2,747
Prepaid expenses and other	1,225	1,034
Total current assets	3,692	13,535
Operating right-of-use assets, net	38	7,846
Property and equipment, net	4,633	4,214
Deposits and other	2,114	2,136
Total assets	10,477	27,731
Current liabilities:
Accounts payable	8,701	27,765
Operating lease liabilities, current	8,390	746
Accrued compensation and related benefits	419	1,090
Accrued clinical trial related costs	364	7,231
Accrued expenses and other	1,321	1,078
Note Payable	15,640	0
Warrant liability	0	534
Total current liabilities	42,697	38,444
Operating lease liabilities, non-current	0	7,939
Stockholders’ equity:
Preferred stock, at stated value; 10,000,000 shares authorized, and no shares issued and outstanding at June 30, 2023 and December 31, 2022	0	0
Common stock, $0.001 par value; 600,000,000 shares authorized with 21,833,847 and 17,986,147 shares issued and outstanding at June 30, 2023 and December 31, 2022, respectively	21	18
Additional paid-in capital	639,173	632,009
Accumulated deficit	(676,613)	(655,878)
Total stockholders’ equity (deficit)	(37,419)	(23,851)
Total liabilities and stockholders’ equity	10,477	27,731
Deferred Accounts Payable To Supplier	7,862	0
Healios
Current assets:
Accounts receivable from Healios	664	716
Current liabilities:
Advance from Healios	$ 5,199	$ 5,199

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2023	Dec. 31, 2022
Stockholders’ equity:
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	21,833,847	17,986,147
Common stock, shares outstanding (in shares)	21,833,847	17,986,147

Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)
shares in Thousands, $ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2023

Jun. 30, 2022

Jun. 30, 2023

Jun. 30, 2022

Revenues

Contract revenue from Healios

$ 49

$ 2,316

$ 49

$ 5,228

Total revenues

2,316

5,228

Costs and expenses

Research and development

10,649

20,794

15,116

41,738

General and administrative

2,345

5,162

5,160

9,261

Depreciation

618

865

Total costs and expenses

13,037

26,574

20,371

51,864

Loss from operations

(12,988)

(24,258)

(20,322)

(46,636)

Other (expense) income, net

^[1]

610

(413)

772

Net loss

(12,924)

(23,648)

(20,735)

(45,864)

Comprehensive loss

$ (12,924)

$ (23,648)

$ (20,735)

$ (45,864)

Net loss per share, basic (in dollars per share)

$ (0.62)

$ (2.28)

$ (1.06)

$ (4.55)

Net loss per share, diluted (in dollars per share)

$ (0.62)

$ (2.28)

$ (1.06)

$ (4.55)

Weighted average shares outstanding, basic (in shares)

20,700

10,383

19,502

10,077

Weighted average shares outstanding, diluted (in shares)

20,700

10,383

19,502

10,077

[1]	See Footnote 10 for components of other (expense) income, net

Condensed Consolidated Statements of Stockholders’ Equity - USD ($)
$ in Thousands

Total

Preferred Stock

Common Stock

Additional Paid-in Capital

Accumulated Deficit

Preferred stock shares, beginning balance (in shares) at Dec. 31, 2021

Beginning balance at Dec. 31, 2021

$ 16,369

$ 0

$ 10

$ 599,703

$ (583,344)

Common stock, beginning balance (in shares) at Dec. 31, 2021

^[1]

9,713,767

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Stock-based compensation

1,410

Issuance of common stock (in shares)

^[1]

129,333

Issuance of common stock

4,803

Issuance of common stock under equity compensation plan (in shares)

^[1]

148,611

Issuance of common stock under equity compensation plan

(58)

Net loss

(22,216)

Comprehensive loss

(22,216)

Preferred stock shares, ending balance (in shares) at Mar. 31, 2022

Ending balance at Mar. 31, 2022

308

$ 0

$ 10

605,858

(605,560)

Common stock, ending balance (in shares) at Mar. 31, 2022

^[1]

9,991,711

Preferred stock shares, beginning balance (in shares) at Dec. 31, 2021

Beginning balance at Dec. 31, 2021

16,369

$ 0

$ 10

599,703

(583,344)

Common stock, beginning balance (in shares) at Dec. 31, 2021

^[1]

9,713,767

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net loss

(45,864)

Comprehensive loss

(45,864)

Preferred stock shares, ending balance (in shares) at Jun. 30, 2022

Ending balance at Jun. 30, 2022

(11,737)

$ 0

$ 11

617,460

(629,208)

Common stock, ending balance (in shares) at Jun. 30, 2022

^[1]

11,004,390

Preferred stock shares, beginning balance (in shares) at Mar. 31, 2022

Beginning balance at Mar. 31, 2022

308

$ 0

$ 10

605,858

(605,560)

Common stock, beginning balance (in shares) at Mar. 31, 2022

^[1]

9,991,711

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Stock-based compensation

1,945

Issuance of common stock (in shares)

^[1]

784,724

Issuance of common stock

9,698

$ 1

9,697

Issuance of common stock under equity compensation plan (in shares)

^[1]

227,955

Issuance of common stock under equity compensation plan

(40)

Net loss

(23,648)

Comprehensive loss

(23,648)

Preferred stock shares, ending balance (in shares) at Jun. 30, 2022

Ending balance at Jun. 30, 2022

$ (11,737)

$ 0

$ 11

617,460

(629,208)

Common stock, ending balance (in shares) at Jun. 30, 2022

^[1]

11,004,390

Preferred stock shares, beginning balance (in shares) at Dec. 31, 2022

Beginning balance at Dec. 31, 2022

$ (23,851)

$ 0

$ 18

632,009

(655,878)

Common stock, beginning balance (in shares) at Dec. 31, 2022

17,986,147

^[1]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Stock-based compensation

$ 707

707

Stock Issue- warrant exercise (in shares)

^[1]

344,170

Issuance of common stock under equity compensation plan (in shares)

^[1]

118,172

Issuance of common stock under equity compensation plan

(56)

Net loss

(7,811)

Comprehensive loss

(7,811)

Preferred stock shares, ending balance (in shares) at Mar. 31, 2023

Ending balance at Mar. 31, 2023

$ (31,011)

$ 0

$ 18

632,660

(663,689)

Common stock, ending balance (in shares) at Mar. 31, 2023

^[1]

18,448,489

Preferred stock shares, beginning balance (in shares) at Dec. 31, 2022

Beginning balance at Dec. 31, 2022

$ (23,851)

$ 0

$ 18

632,009

(655,878)

Common stock, beginning balance (in shares) at Dec. 31, 2022

17,986,147

^[1]

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net loss

$ (20,735)

Comprehensive loss

$ (20,735)

Preferred stock shares, ending balance (in shares) at Jun. 30, 2023

Ending balance at Jun. 30, 2023

$ (37,419)

$ 0

$ 21

639,173

(676,613)

Common stock, ending balance (in shares) at Jun. 30, 2023

21,833,847

^[1]

Preferred stock shares, beginning balance (in shares) at Mar. 31, 2023

Beginning balance at Mar. 31, 2023

$ (31,011)

$ 0

$ 18

632,660

(663,689)

Common stock, beginning balance (in shares) at Mar. 31, 2023

^[1]

18,448,489

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Stock-based compensation

568

Stock Issue- warrant exercise (in shares)

813,000

Stock Issue- warrant exercise

$ 1

(1)

Issuance of common stock (in shares)

^[1]

2,315,000

Issuance of common stock

3,338

$ 2

3,336

Reclass of warrant liability to additional paid-in capital upon exercise

^[2]

2,685

Issuance of common stock under equity compensation plan (in shares)

^[1]

257,358

Issuance of common stock under equity compensation plan

(75)

Net loss

(12,924)

Comprehensive loss

$ (12,924)

(12,924)

Preferred stock shares, ending balance (in shares) at Jun. 30, 2023

Ending balance at Jun. 30, 2023

$ (37,419)

$ 0

$ 21

$ 639,173

$ (676,613)

Common stock, ending balance (in shares) at Jun. 30, 2023

21,833,847

^[1]

[1]	Reflects the 1-for-25 reverse stock split that became effective August 26, 2022. Refer to Note 1, “Background and Basis of Presentation.”
[2]	Warrant reclassification (Footnote 9 Fair Value Measurements)

Condensed Consolidated Statements of Stockholders’ Equity (Parenthetical)	Aug. 26, 2022
Statement of Stockholders' Equity [Abstract]
Reverse stock split, conversion ratio	0.04

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating activities
Net loss	$ (12,924)	$ (23,648)	$ (20,735)	$ (45,864)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	43	618	95	865
Gain on debt extinguishment	(2,612)	0	(2,612)	0
Loss from impairment of assets			7,545	4,931
Stock-based compensation			1,275	3,355
Discount On Revenue From Issuance Of Warrant			185	0
Change in fair value of Note Payables	640	0	640	0
Change in fair value of warrant liabilities	1,522	0	2,151	0
Changes in operating assets and liabilities:
Accounts receivable from Healios - billed and unbilled			52	820
Prepaid expenses, deposits and other			66	307
Accounts payable, accrued expenses and other			787	2,320
Deferred revenue - Healios			0	(3,340)
Net cash used in operating activities			(10,551)	(36,606)
Investing activities
Proceeds from the sale of equipment			105	0
Purchases of equipment			0	(1,825)
Net cash used in investing activities			105	(1,825)
Financing activities
Proceeds from issuance of common stock, net of issuance cost			3,342	14,500
Shares retained for withholding tax payments on stock-based awards			(131)	(98)
Net cash provided by financing activities			3,211	14,402
Decrease in cash and cash equivalents			(7,235)	(24,029)
Cash and cash equivalents at beginning of the period			9,038	37,407
Cash and cash equivalents at end of the period	$ 1,803	$ 13,378	$ 1,803	$ 13,378

Background and Basis of Presentation	6 Months Ended
Background and Basis of Presentation	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Background and Basis of Presentation	Background and Basis of Presentation Organization Athersys, Inc., including its consolidated subsidiaries (collectively, “we,” “us,” “our,” “Athersys,” and the “Company”), is a biotechnology company focused in the field of regenerative medicine and operates in one business segment. Our operations consist of research, clinical development activities, manufacturing and manufacturing process development activities, and our most advanced program is in a pivotal Phase 3 clinical trial for the treatment of ischemic stroke. Basis of Presentation The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on April 3, 2023. The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and Regulation S-X. Accordingly, since they are interim statements, the accompanying financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accompanying financial statements reflect all adjustments, consisting of normal recurring adjustments and disclosures that are, in the opinion of management, necessary for a fair presentation of financial position and results of operations for the interim periods presented. Interim results are not necessarily indicative of results for a full year. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Our critical accounting policies, estimates and assumptions are described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” which is included in this Quarterly Report on Form 10-Q in Part I, Item 2. Reverse Stock Split On August 26, 2022, the Company amended its Certificate of Incorporation to implement a 1-for-25 reverse stock split of its common stock. The reverse stock split did not cause an adjustment to the par value or the authorized shares of the common stock. As a result of the reverse stock split, the Company adjusted the share amounts under its employee equity incentive plans, inducement awards and common stock warrant agreements with third parties. All disclosures of common shares and per common share data in the accompanying interim financial statements and related notes reflect the reverse stock split for all periods presented.

Going Concern	6 Months Ended
Going Concern	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Going Concern	Going Concern We have prepared our unaudited condensed consolidated financial statements on a going concern basis, which assumes that we will realize our assets and satisfy our liabilities in the normal course of business. However, we have incurred net losses since our inception in 1995 and have negative operating cash flows. These factors, among others, raise substantial doubt about our ability to continue as a going concern within one year after the date that these financial statements are issued. The accompanying unaudited condensed consolidated financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern. At June 30, 2023, we had cash and cash equivalents of $1.8 million. We will need substantial additional funding to develop our MultiStem product candidate and to continue our operations. Significant additional capital will be required to continue our research and development programs, including progressing our clinical product candidates to potential commercialization and preparing for commercial-scale manufacturing and sales. If we are unable to obtain adequate financing, we likely would have to file for protection under the bankruptcy laws to continue to pursue potential transactions and conduct a wind down of our Company. If we decide to dissolve and liquidate our assets or to seek protection under the bankruptcy laws, it is unclear to what extent we will be able to pay our obligations, and, accordingly, it is further unclear whether and to what extent any resources will be available for distributions to stockholders. For the foreseeable future, our ability to continue our operations is dependent upon the ability to obtain additional funding through public or private equity offerings, debt financings, collaborations and/or licensing arrangements. However, there can be no assurance that we will be able to obtain such funding on terms acceptable to us, on a timely basis or at all, particularly in light of our current stock price and liquidity. If we are unable to obtain funding, we may be required to further delay, reduce or eliminate our MultiStem product candidate approval and commercialization efforts, which would adversely affect our business prospects, and we likely will be unable to continue operations. Additionally, our ability to make timely payments on obligations to the supplier we have entered into the Forbearance Agreement, discussed in more detail below, is dependent on future capital raise. The supplier has the right to call the full amount of the debt due immediately if we are late on a payment and do not remedy the delinquent payment in the allotted cure period. The accompanying consolidated financial statements do not include any adjustments to reflect the possible future effect on the recoverability and classification of assets or the amounts and classification of liabilities that may result from the outcome of the uncertainty concerning our ability to continue as a going concern.

Accounting Standards Adopted	6 Months Ended
Accounting Standards Adopted	Jun. 30, 2023
Accounting Policies [Abstract]
Accounting Standards Adopted	Accounting Standards AdoptedIn June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-13, Measurement of Credit Losses on Financial Instruments (Topic 326). This ASU replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. Subsequent to issuing ASU 2016-13, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326): Effective Dates, delaying the effective date for smaller reporting companies until January 2023. The impact of adoption of this standard did not have a material impact on the consolidated financial statements and disclosures.

Net Loss per Share

6 Months Ended

Jun. 30, 2023

Earnings Per Share [Abstract]

Net Loss per Share

Basic and diluted net loss per share have been computed using the weighted-average number of shares of our common stock outstanding during the period.

The following instruments were excluded from the calculation of diluted net loss per share because their effect would be anti-dilutive.


	Three months ended June 30,		Six months ended June 30,
	2023	2022	2023	2022
Stock options	1,132,606	1,224,505	1,132,606	1,224,505
Restricted stock units	525,239	69,765	525,239	69,765
Convertible Note - refer to Note 11	11,538,461	—	11,538,461	—
Warrants - refer to Note 8	17,114,090	400,000	17,114,090	400,000
Total	30,310,396	1,694,270	30,310,396	1,694,270

Property and Equipment, net

6 Months Ended

Jun. 30, 2023

Property, Plant and Equipment [Abstract]

Property and Equipment, net


	For the periods ended
Property and equipment consists of (in thousands):	June 30, 2023		December 31, 2022
Laboratory equipment	$	7,224	$	7,576
Office equipment and leasehold improvements	3,933		3,934
Equipment not yet in service	2,911		2,313
	14,068		13,823
Accumulated depreciation and amortization	(9,435)		(9,609)
	$	4,633	$	4,214

of approximately $7.2 million to adjust the carrying amount of certain equipment assets to the estimated market value of similar assets.

Collaborative Arrangements and Revenue Recognition

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Collaborative Arrangements and Revenue Recognition

Healios Collaboration

Healios Revenue Recognition

Accounts receivable from Healios

Advance from Healios

Disaggregation of Revenues


	Three months ended June 30, 2023				Three months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		2,316

Total disaggregated revenues	$	49	$	—	$	—	$	2,316


	Six months ended June 30, 2023				Six months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		5,228

Total disaggregated revenues	$	49	$	—	$	—	$	5,228

Stock-Based Compensation	6 Months Ended
Stock-Based Compensation	Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-Based Compensation	Stock-Based CompensationOur 2019 Equity and Incentive Compensation Plan (the “EICP”) authorized at inception, an aggregate of approximately 1,700,000 shares of our common stock for awards to employees, directors and consultants. The EICP authorizes the issuance of stock-based compensation in the form of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares and units, and other stock-based awards. As of June 30, 2023, a total of 961,333 shares (including 11,289 shares related to an expired incentive plan) of common stock have been issued under our equity incentive plans.As of June 30, 2023, a total of 84,103 shares were available for issuance under our EICP, and stock-based awards representing 1,228,345 (including 21,092 shares related to an expired incentive plan) of common stock were outstanding. Additionally, inducement stock options granted outside of our equity incentive plans to purchase 429,500 shares of common stock were outstanding at June 30, 2023. For the three months ended June 30, 2023 and 2022, stock-based compensation expense was approximately $0.6 million and $1.9 million, respectively. At June 30, 2023, total unrecognized estimated compensation cost related to unvested stock-based awards was approximately $3.8 million, which is expected to be recognized by the end of 2026 using the straight-line method.

Stockholders’ Equity and Warrants	6 Months Ended
Stockholders’ Equity and Warrants	Jun. 30, 2023
Equity [Abstract]
Stockholders’ Equity and Warrants	Stockholders’ Equity and Warrants At June 30, 2023 and June 30, 2022, we had 600,000,000 shares of common stock and 10,000,000 shares of undesignated preferred stock authorized. No shares of preferred stock have been issued as of June 30, 2023 and 2022. August 2022 Securities Purchase Agreement On August 15, 2022, the Company entered into a placement agency agreement with A.G.P./Alliance Global Partners (“A.G.P.”), pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P. received a placement fee of approximately $0.8 million and approximately $0.1 million for the reimbursement of expenses. On August 15, 2022, the Company entered into a securities purchase agreement (the “August 2022 Purchase Agreement”) with an investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 1,200,000 shares of the Company’s common stock, (ii) pre-funded warrants (the “August 2022 Pre-Funded Warrants”) exercisable for an aggregate of 720,000 shares of common stock and (iii) warrants (the “August 2022 Common Warrants”) exercisable for an aggregate of 1,920,000 shares of common stock, in combinations of one share of common stock or one August 2022 Pre-Funded Warrant and one August 2022 Common Warrant for a combined purchase price of $6.25 (less $0.0025 for any August 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the August 2022 Purchase Agreement, the August 2022 Pre-Funded Warrants were exercisable upon issuance, and the August 2022 Common Warrants were exercisable upon the six-month anniversary of issuance for a five-year period. Under the August 2022 Purchase Agreement, each August 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0025 and each August 2022 Common Warrant was exercisable for one share of common stock at a price per share of $6.385. The offering closed on August 17, 2022 and the Company received net proceeds of approximately $11.0 million, after giving effect to the payment of placement fees and expenses. On August 29, 2022, the August 2022 Pre-Funded Warrants were exercised in full and re-measured to fair value. Upon remeasurement and exercise, we recorded a gain of $0.8 million to adjust the warrant liability associated with the August 2022 Pre-Funded Warrants to fair value and reclassified the $3.8 million warrant liability to additional paid-in capital. The fair value adjustment is recorded in other income, net on the condensed consolidated statement of operations and comprehensive loss. Pursuant to the August 2022 Purchase Agreement, in the event the Company proposes a future offering to sell shares of common stock during the twelve months following the closing date, the investor has the right to participate in each offering in an amount up to 30.0%. On September 22, 2022, the Company entered into an amendment to the August 2022 Purchase Agreement (the “August 2022 Purchase Agreement Amendment”) with the investor to, among other things, (i) amend the August 2022 Common Warrants to be exercisable for a seven-year period after the six-month anniversary of the closing date, (ii) reduce the standstill period, (iii) reduce the term and the amount of the participation right, and (iv) require the investor, subject to certain conditions, to participate in future offerings to sell certain securities to investors primarily for capital raising purposes. On September 22, 2022, in consideration of the August 2022 Purchase Agreement Amendment, and without receiving any cash proceeds, the Company issued to the investor additional warrants exercisable for 2,000,000 shares of common stock (the “September Warrants”) at a price of $6.385 for a seven-year period after the six-month anniversary of the date of issuance thereof. The Company has assessed the August 2022 Pre-Funded Warrants, the August 2022 Common Warrants and the September Warrants (collectively, the “Warrants”) for appropriate equity or liability classification pursuant to the Company’s accounting policy as described in Note C, in the notes to consolidated financial statements in our Annual Report on Form 10-K for the year ended December 31, 2022. The Warrants contain a provision pursuant to which the warrant holder has the option to receive cash in the event there is a fundamental transaction (contractually defined to include various merger, acquisition or stock transfer activities). The Warrants met the definition of a derivative pursuant to ASC 815, Derivatives and Hedging and did not meet the derivative scope exception. As a result, the Warrants were initially recorded as liabilities and measured at fair value using the Black-Scholes valuation model. Issuance costs of $0.5 million were allocated to the Pre-Funded Warrants and Common Warrants and recorded in other income, net on the condensed consolidated statement of operations and comprehensive loss in the three ended September 30, 2022. The remaining issuance costs of $0.4 million were allocated to the common stock and recorded in additional paid-in capital. On April 17, 2023, the Company amended the August Warrants and the September Warrants to, among other things, reduce the exercise price to $0.96 per share with respect to 1,920,000 shares of common stock covered by the August Warrants and 1,760,000 shares of common stock covered by the September Warrants. As a result of the amended agreement, the August and September Warrants now meet the guidance for equity classification in accordance with ASC 815, Derivatives and Hedging. The warrants were adjusted to their fair value on April 17, 2023, inclusive of the change in exercise price and the change in fair value was recorded in other (expense) income, net and then the warrants were reclassified to additional paid-in-capital (APIC). During the three- and six-months ended June 30, 2023, the Company recognized other expense of $1.5 million and other expense of $2.2 million, respectively, for the fair value adjustment related to the warrant liabilities. November 2022 Securities Purchase Agreement On November 9, 2022, the Company entered into a placement agency agreement with A.G.P. pursuant to which A.G.P. agreed to serve as exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P received a placement fee of approximately $0.4 million and approximately $0.1 million for the reimbursement of expenses. On November 9, 2022, the Company entered into a securities purchase agreement (the “November 2022 Purchase Agreement”) with investors, pursuant to which the Company agreed to issue and sell, in a public offering, (i) an aggregate of 3,927,275 shares of the Company’s common stock, (ii) pre-funded warrants (the “November 2022 Pre-Funded Warrants”) exercisable for an aggregate of 1,077,270 shares of common stock and (iii) warrants (the “November 2022 Common Warrants”) exercisable for an aggregate of 10,009,090 shares of common stock, in combinations of one share of common stock or one November 2022 Pre-Funded Warrant and two November 2022 Common Warrants for a combined purchase price of $1.10 (less $0.0001 for any November 2022 Pre-Funded Warrant). Subject to certain ownership limitations, under the terms of the November 2022 Purchase Agreement, the November 2022 Pre-Funded Warrants and November 2022 Common Warrants were exercisable upon issuance. Under the November 2022 Purchase Agreement, each November 2022 Pre-Funded Warrant was exercisable for one share of common stock at a price per share of $0.0001 and each November 2022 Common Warrant is exercisable for one share of common stock at a price per share of $1.10 for a five-year period after the date of issuance. The offering closed on November 10, 2022, and the Company received net proceeds of approximately $5.0 million, after giving effect to the payment of placement fees and expenses. The November 2022 Pre-Funded Warrants were exercised in full at the closing. The November 2022 Common Warrants meet the requirements to be classified as equity in accordance with ASC 815, Derivatives and Hedging. The November 2022 Common Warrants were recorded at their relative fair value at issuance in the stockholders’ equity section of the balance sheet. April 2023 Securities Purchase Agreement On April 18, 2023, the Company entered into a placement agency with A.G.P. pursuant to which A.G.P. agreed to serve as the exclusive placement agent for the issuance and sale of common stock and warrants. A.G.P. received a placement fee of approximately $0.2 million and approximately $0.1 million for the reimbursement of expenses. On April 18, 2023, the Company entered into a securities purchase agreement (the “April 2023 Purchase Agreement”) with investors, pursuant to which the Company agreed to issue and sell, in a registered direct offering, (i) an aggregate of 2,315,000 shares of the Company’s common stock and (ii) pre-funded warrants (the “April 2023 Pre-Funded Warrants”) exercisable for an aggregate of 1,370,000 shares of common stock, together with warrants (the “April 2023 Common Warrants”) exercisable for an aggregate of 3,685,000 shares of the Company’s common stock in a private placement, in combinations of one share or one April 2023 Pre-Funded Warrant and one April 2023 Common Warrant for a combined purchase price of $1.00. Subject to certain ownership limitations, the April 2023 Pre-Funded Warrants are exercisable upon issuance, and the April 2023 Common Warrants are exercisable upon the six-month anniversary of issuance. Each April 2023 Pre-Funded Warrant is exercisable for one share of common stock at a price per share of $0.0001 (as adjusted from time to time in accordance with the terms thereof) and does not expire. Each April 2023 Common Warrant is exercisable into one share of common stock at a price per share of $0.96 (as adjusted from time to time in accordance with the terms thereof) for a seven-year period after the six-month anniversary of the date of issuance. The offering closed on April 19, 2023, and the Company received net proceeds of approximately $3.4 million, after giving effect to the payment of placement fees and expenses. The April 2023 Common Warrants and 557,000 of the remaining outstanding April 2023 Pre-Funded Warrants meet the requirements to be classified as equity in accordance with ASC 815, Derivatives and Hedging. The April Common Warrants were recorded at their relative fair value at issuance in the stockholders’ equity section of the balance sheet. Healios 2021 Warrants In August 2021, we issued the 2021 Warrants to Healios to purchase up to an aggregate of 400,000 shares of our common stock. One of the 2021 Warrants is for the purchase of up to 120,000 shares at an exercise price of $45.00 per share, subject to specified increases, and generally is only exercisable within 60 days of receipt of either conditional or full marketing approval from the Pharmaceuticals and Medical Devices Agency in Japan (the “PMDA”) for the intravenous administration of MultiStem to treat patients who are suffering from acute respiratory distress syndrome. The other 2021 Warrant is for the purchase of up to 280,000 shares at an exercise price of $60.0 per share, subject to specified increases, and generally is only exercisable within 60 days of receipt of either conditional or full marketing approval from the PMDA for the intravenous administration of MultiStem to treat patients who are suffering from ischemic stroke. The 2021 Warrants may be terminated by us under certain conditions and have an exercise cap triggered at Healios’ ownership of 19.9% of our common stock. Equity Purchase Agreement We previously had equity purchase agreements in place since 2011 with Aspire Capital Fund, LLC (“Aspire Capital”) that provided us the ability to sell shares to Aspire Capital from time to time. On May 12, 2022, we entered into an agreement (the “2022 Equity Facility”) that included Aspire Capital’s commitment to purchase up to an aggregate of $100.0 million of shares of our common stock over a defined timeframe. The terms of the 2022 Equity Facility were similar to the previous equity facilities with Aspire Capital. Our prior equity facility that was entered into in June 2021, or the 2021 Equity Facility, and includes Aspire Capital’s commitment to purchase up to an aggregate of $100.0 million of shares of our common stock over a defined timeframe. The terms of the 2021 Equity Facility are similar to the previous equity facilities with Aspire Capital, and we filed a registration statement for the resale of 1,600,000 shares of our common stock in connection with the 2021 Equity Facility. Our prior equity facility that was entered into in 2019, that was fully utilized and terminated during the third quarter of 2021. On July 6, 2022, Aspire Capital terminated the 2022 Equity Facility. Aspire Capital had the right to terminate the 2022 Equity Facility at the time or any time after any of the Company’s then current executive officers ceased to be an executive officer or full-time employee of the Company, which right was triggered in connection with the departures of William Lehmann, former president and Chief Operating Officer, John Harrington, Former Executive Vice President and Chief Scientific Officer, and Ivor MacLeod, former Chief Financial Officer. During quarter ended June 30, 2022, we sold 1,003,560 shares to Aspire Capital at an average price of $9.67 per share.

Fair Value Measurements

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

Liabilities Measured at Fair Value on a Recurring Basis



	Warrant Liabilities
Balance December 31, 2022	$	(534)
Fair Value Adjustment - March 31, 2023	(629)
Balance March 31, 2023	(1,163)
Fair Value Adjustment - April 18, 2023	(1,522)
Reclassification to Additional paid in capital	2,685
Balance June 30, 2023	$	—



	Note Payable		Accrued Interest		Total Fair Value
Balance March 31, 2023	$	—	$	—	$	—
Initial Transaction Fair Value - May 17	$15,000		—		15,000
Accrued Paid-in-Kind (PIK) Interest as of June 30, 2023	—		185		185
Fair Value Adjustment - June 30, 2023	640		—		640
Balance June 30, 2023	15,640		185		$	15,825

Other Income and Expenses

6 Months Ended

Jun. 30, 2023

Other Income and Expenses [Abstract]

Other Income and Expense

Other (expense) income consists of loss from extinguishment of debt, interest expense, foreign exchange gain/(loss), fair value change from warrants, gain/(loss) on disposal of assets and other.


	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Gain/(Loss) from extinguishment of debt	$	2,612	$	—	$	2,612	$	—
Change in fair value - note payable	(640)		—		(640)		—
Interest expense	(366)		(6)		(376)		(14)
Foreign exchange gain/(loss)	(80)		117		(178)		284
Fair value change - warrants	(1,522)		—		(2,151)		—
Gain/(Loss) on disposal of assets	—		—		146		—
Other	60		499		174		502
	$	64	$	610	$	(413)	$	772

Forbearance Agreement and Convertible Note	6 Months Ended
Forbearance Agreement and Convertible Note	Jun. 30, 2023
Debt Disclosure [Abstract]
Forbearance Agreement and Convertible Note	Forbearance Agreement and Convertible Note On May 17, 2023, the Company entered into a Forbearance, Restructuring and Settlement Agreement (the “Forbearance Agreement”) with a supplier, which amends certain supply agreements between the Company and the supplier. The Forbearance Agreement provides that the supplier agrees to forbear from exercising rights and remedies available as a result of existing overdue amounts under existing agreements, so long as the Company pays to the supplier an aggregate of $11.8 million in deferred accounts payable, in monthly payments of $0.25 million, commencing in October 2023. Pursuant to the terms of the Forbearance Agreement, the Company also issued a convertible promissory note to the supplier in the principal amount of $15.0 million (the “Note”). The Company accounted for the restructuring as an extinguishment and recorded the new liabilities at fair value of $7.9 million for the deferred accounts payable and $15.0 million for the Note. The Company recorded a gain on extinguishment of $2.6 million as a result of the restructuring. The Note bears interest at a rate of 10.0% per annum, which shall be capitalized and added to the principal amount semi-annually on January 1 and July 1, commencing on July 1, 2023, and must be repaid in full, including accrued and unpaid interest thereunder, on (or before, subject to certain conditions) May 17, 2026 (the “Maturity Date”). The Note provides for customary events of default, including nonpayment, failure to comply with covenants or other agreements in the Note, certain events of bankruptcy and an adverse judgment for payment of $3.0 million or more (each, an “Event of Default”). Upon and during the continuance of any Event of Default, the rate of interest shall increase to 14%. The obligations under the Note are guaranteed by certain of the Company’s existing subsidiaries. Subject to a beneficial ownership limitation of 19.99% of the Company’s outstanding common stock and any shareholder approval requirements, the supplier may elect, at its sole discretion, to convert any outstanding principal and interest on the Note into shares of common stock of the Company at a conversion price of $1.30 per share (subject to adjustment as provided under the Note), which amounts to 11,538,461 convertible shares, at any time after the 18-month anniversary of the date of issuance of the Note (or upon an Event of Default) until the total outstanding balance of the Note is paid. The Company has elected the fair value option under ASC 825-10-25 to measure the Note at fair value at inception and in subsequent periods, with changes in fair value reported in earnings. The Note is eligible for the fair value option as it is a permissible instrument within the scope of ASC 825-10-15. The Company incurred debt issuance costs (legal fees) of $16,679 which were expensed at issuance. The fair value of the Note on June 30, 2023 was $15.8 million and the change in fair value of $0.8 million was reported in other (expense) income, net, with $0.2 million being recorded as Paid-in-Kind interest and the remaining $0.6 million being the fair value adjustment, increasing the interest expense and note payable balance. See a reconciliation of the change in fair value of the Note in Note 9, “Fair Value Measurements”. The Note is an unsecured obligation. The Note is unconditionally and irrevocably guaranteed by certain guarantors. If an Event of Default occurs under points (1) through (6) below, the holder of the Note may request for acceleration of maturity of 100% of the Note principal. Upon the request for acceleration of maturity, the Note principal will be due immediately. If an Event of Default occurs under clause (4) and (5) below, 100% of the principal amount of the Note will be automatically and immediately due and payable to the holder of the note. An Event of Default is defined in the Agreement as any of the following: 1.Company defaults in the payment of principal, accrued and unpaid interest or any other amounts owing under the Note 2.Any representation or warranty made by the Company proves to have been false 3.The Company defaults in the performance of, or fails to comply with, any other terms, provision, condition, covenant or agreement contained in the Note 4.Company files for bankruptcy 5.Court appoints a custodian, receiver, trustee or other officer for dissolution, winding-up, or liquation of the Company 6.One or more judgments for payment of money in excess of $3 million shall be rendered against the Company The deferred accounts payable does not accrue interest as long as all monthly payments are made on or before the last day of each calendar month, starting in October 2023 and running for 48 months or until the full $11.8 million balance has been repaid. Any cash payment not paid when due shall be subject to interest at the rate of 10% per annum running from the date of the last cash payment made by or on behalf of the Company. If any cash payment remains unpaid for more than 60 days following the date such cash payment was due, the supplier has the right to declare the entire remaining balance due immediately and payable without further notice. Cash payments automatically become immediately due and payable upon the commercial readiness by the Company.

Restructuring Charges

6 Months Ended

Jun. 30, 2023

Restructuring and Related Activities [Abstract]

Restructuring Charges


	Balances				Cash		Balances
	March 31, 2023		Charges		(payments)		June 30, 2023
Employee severance and benefits	565		$	—	(251)		$	314
Legal and professional fees	27		16		(16)		27
Other	15		—		(15)		—
	$	607	$	16	$	(282)	$	341

The current portion of our restructuring accrual is included in accrued compensation and related benefits and accounts payable and there is no long-term portion of our restructuring accrual.

Restructuring charges are recorded general and administrative costs and expenses for the three months ended June 30, 2023.

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesWe have United States (“U.S.”) federal net operating loss and research and development tax credit carryforwards, as well as state and city net operating loss carryforwards, which may be used to reduce future taxable income and tax liabilities. We also have foreign net operating loss and tax credit carryforwards, and the foreign net operating loss carryforwards do not expire. Substantially all of our deferred tax assets have been fully offset by a valuation allowance due to our cumulative losses. The carrying value of our deferred tax assets and liabilities is determined by the enacted U.S. corporate income tax rate. Consequently, any changes in the U.S. corporate income tax rate impacts the carrying value of our deferred tax assets and liabilities. Also, there are significant limitations on our ability to utilize our net operating loss and tax credit carryforwards generated prior to October 2012 under Section 382 of the Internal Revenue Code of 1986, as amended. Utilization of some of the federal and state net operating loss and tax credit carryforwards generated after October 2012 may be subject to additional annual limitations due to the “change in ownership” provisions of the IRC and similar state provisions. The annual limitations may result in the expiration of net operating losses and credits before utilization. The Company has not performed a Section 382 study subsequent to October 2012 as of June 30, 2023. We will update our analysis under Section 382 prior to using these attributes.

Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2023
Subsequent Events [Abstract]
Subsequent Event	Subsequent Events Nasdaq Notices Market Value Standard Compliance On October 14, 2022, we received a written notice (the “October 2022 Notice”) from the Listing Qualifications Department of The Nasdaq Stock Market LLC (“Nasdaq”) that we are not in compliance with the requirement to maintain a minimum market value of listed securities of $35 million, as set forth in Nasdaq Listing Rule 5550(b)(2) (the “Market Value Standard”) because the market value of the common stock was below $35 million for 30 consecutive business days. The October 2022 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(C), we had a period of 180 calendar days from the date of the October 2022 Notice, or until April 12, 2023, to regain compliance under the Market Value Standard. On April 13, 2023, we received notice from Nasdaq that we had not regained compliance with the Market Value Standard. On April 14, 2023, we filed our request for a hearing, which was held before the Nasdaq Hearing Panel (the “Panel”) on May 18, 2023. On June 26, 2023, the Panel notified us that it had granted our request for an exception through September 15, 2023, to the continued listing requirements, subject to our demonstrating compliance with the Market Value Standard by September 15, 2023. In accordance with the Market Value Standard and Nasdaq Listing Rule 5810(c)(3)(C), compliance with the Market Value Standard may be achieved if at any time during the compliance period the market value of the listed securities closes at a value of at least $35 million for a minimum of ten consecutive business days. The Panel noted that it reserves the right to reconsider the terms of this exception based on any event, condition or circumstance that exists or develops that would, in the opinion of the Panel, make continued listing of our securities on Nasdaq inadvisable or unwarranted. In addition, the Nasdaq Listing and Hearing Review Council may, on its own motion, determine to review any Panel decision within 45 calendar days after issuance of the written decision. There can be no assurance that we will be able to regain compliance under the Market Value Standard, or will otherwise be in compliance with other Nasdaq listing criteria. While we are exercising diligent efforts to maintain the listing of our common stock on The Nasdaq Capital Market, there can be no assurance that we will be able to regain or maintain compliance with Nasdaq listing criteria. Minimum Closing Bid Price Compliance On July 28, 2023, the Company received a written notice (the “July 2023 Notice”) from Nasdaq that the Company is not in compliance with the requirement to maintain a minimum closing bid price of $1.00 per share, as set forth in Nasdaq Listing Rule 5550(a)(2) (the “Bid Price Requirement”), because the closing bid price of the Company’s common stock was below $1.00 per share for 30 consecutive business days for the period of June 14, 2023 through July 27, 2023. The July 2023 Notice does not impact the listing of the Company’s common stock on The Nasdaq Capital Market at this time. The July 2023 Notice provided that, in accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has a period of 180 calendar days from the date of the July 2023 Notice, or until January 24, 2024, to regain compliance with the Bid Price Requirement. During this period, the Company’s common stock will continue to trade on The Nasdaq Capital Market. If at any time before January 24, 2024, the bid price of the Company’s common stock closes at or above $1.00 per share for a minimum of ten consecutive trading days, Nasdaq will provide written notification that the Company has achieved compliance with the Bid Price Requirement and the matter will be closed. However, under Nasdaq Listing Rule 5810(c)(3)(A), Nasdaq may exercise its discretion to extend this ten day period as discussed in Rule 5810(c)(3)(H). The Company is considering all available options to regain compliance with the Bid Price Requirement. However, there can be no assurance that the Company will be able to regain compliance with the rule or will otherwise be in compliance with other Nasdaq listing criteria. In the event the Company does not regain compliance by January 24, 2024, the Company may be eligible for an additional 180 calendar day compliance period to demonstrate compliance with the Bid Price Requirement. To qualify for the additional 180-day period, the Company will be required to meet the continued listing requirements for market value of publicly held shares and all other initial listing standards (with the exception of the Bid Price Requirement). In addition, the Company will need to provide written notice to Nasdaq of its intention to cure the deficiency during the second compliance period by effecting a reverse stock split, if necessary. If the Company does not qualify for the second compliance period or fails to regain compliance during the second 180-day period, then Nasdaq will notify the Company that its common stock is subject to delisting. At that time, the Company may appeal the delisting determination to a Nasdaq Hearings Panel. Healios Update On August 9, 2023, ABT Holding Company, a wholly-owned subsidiary of Athersys, Inc. (together, the “ABT/ATHX”), entered into a Memorandum of Understanding (“MOU”) with HEALIOS, K.K. (“Healios”), which memorializes the terms between the ABT/ATHX and Healios regarding consultation services that ABT/ATHX agreed to provide Healios as it explores its effort to join and participate in the Company’s ongoing MASTERS-2 Study, a 300 patient Phase 3 clinical trial for the treatment of ischemic stroke using MultiStem (the “Masters-2 Trial”). The MOU, among other things, provides that the ABT/ATHX will support Healios’ consultation with Japanese Pharmaceuticals and Medical Devices Agency (“PMDA”). In exchange, Healios agreed to compensate the ABT/ATHX for the aforementioned consultation services. Pursuant to the MOU, Healios has deposited $150,000 with the Company to be applied to the charges incurred for these consultation services. As outlined in the MOU, ABT/ATHX will work with Healios to facilitate regulatory consultation with PMDA and will make available to Healios certain information necessary to facilitate regulatory consultation. Consultation with the PMDA is a necessary step to enable Healios to elect to join the Masters-2 Trial. If Healios elects to join the Masters-2 Trial, additional compensation will be paid by Healios for support and clinical doses provided by the Company, per existing contracts.

Accounting Standards Adopted (Policies)	6 Months Ended
Accounting Standards Adopted (Policies)	Jun. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2022, filed with the SEC on April 3, 2023. The accompanying financial statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and Regulation S-X. Accordingly, since they are interim statements, the accompanying financial statements do not include all of the information and notes required by GAAP for complete financial statements. The accompanying financial statements reflect all adjustments, consisting of normal recurring adjustments and disclosures that are, in the opinion of management, necessary for a fair presentation of financial position and results of operations for the interim periods presented. Interim results are not necessarily indicative of results for a full year.
Use of Estimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Our critical accounting policies, estimates and assumptions are described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” which is included in this Quarterly Report on Form 10-Q in Part I, Item 2.
Accounting Standards Adopted	Accounting Standards AdoptedIn June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-13, Measurement of Credit Losses on Financial Instruments (Topic 326). This ASU replaces the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. Subsequent to issuing ASU 2016-13, the FASB issued ASU 2019-10, Financial Instruments - Credit Losses (Topic 326): Effective Dates, delaying the effective date for smaller reporting companies until January 2023. The impact of adoption of this standard did not have a material impact on the consolidated financial statements and disclosures.

Net Loss per Share (Tables)

6 Months Ended

Jun. 30, 2023

Earnings Per Share [Abstract]

Schedule of Instruments Excluded from Calculation of Diluted Net Loss Per Share

The following instruments were excluded from the calculation of diluted net loss per share because their effect would be anti-dilutive.


	Three months ended June 30,		Six months ended June 30,
	2023	2022	2023	2022
Stock options	1,132,606	1,224,505	1,132,606	1,224,505
Restricted stock units	525,239	69,765	525,239	69,765
Convertible Note - refer to Note 11	11,538,461	—	11,538,461	—
Warrants - refer to Note 8	17,114,090	400,000	17,114,090	400,000
Total	30,310,396	1,694,270	30,310,396	1,694,270

Property and Equipment, net (Tables)

6 Months Ended

Jun. 30, 2023

Property, Plant and Equipment [Abstract]

Schedule of Property and Equipment, net


	For the periods ended
Property and equipment consists of (in thousands):	June 30, 2023		December 31, 2022
Laboratory equipment	$	7,224	$	7,576
Office equipment and leasehold improvements	3,933		3,934
Equipment not yet in service	2,911		2,313
	14,068		13,823
Accumulated depreciation and amortization	(9,435)		(9,609)
	$	4,633	$	4,214

Collaborative Arrangements and Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Contract Revenues Disaggregated by Timing of Revenue Recognition

The following table presents our contract revenues disaggregated by timing of revenue recognition (in thousands):


	Three months ended June 30, 2023				Three months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		2,316

Total disaggregated revenues	$	49	$	—	$	—	$	2,316


	Six months ended June 30, 2023				Six months ended June 30, 2022
	Point in Time		Over Time		Point in Time		Over Time
Contract Revenue from Healios

Product supply revenue	$	49	$	—	$	—	$	—
Service revenue	—		—		—		5,228

Total disaggregated revenues	$	49	$	—	$	—	$	5,228

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

Schedule of Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs



	Warrant Liabilities
Balance December 31, 2022	$	(534)
Fair Value Adjustment - March 31, 2023	(629)
Balance March 31, 2023	(1,163)
Fair Value Adjustment - April 18, 2023	(1,522)
Reclassification to Additional paid in capital	2,685
Balance June 30, 2023	$	—



	Note Payable		Accrued Interest		Total Fair Value
Balance March 31, 2023	$	—	$	—	$	—
Initial Transaction Fair Value - May 17	$15,000		—		15,000
Accrued Paid-in-Kind (PIK) Interest as of June 30, 2023	—		185		185
Fair Value Adjustment - June 30, 2023	640		—		640
Balance June 30, 2023	15,640		185		$	15,825

Other Income and Expenses (Tables)

6 Months Ended

Jun. 30, 2023

Other Income and Expenses [Abstract]

Schedule of Other Income and Expense

Other (expense) income consists of loss from extinguishment of debt, interest expense, foreign exchange gain/(loss), fair value change from warrants, gain/(loss) on disposal of assets and other.


	Three months ended June 30,				Six months ended June 30,
	2023		2022		2023		2022
Gain/(Loss) from extinguishment of debt	$	2,612	$	—	$	2,612	$	—
Change in fair value - note payable	(640)		—		(640)		—
Interest expense	(366)		(6)		(376)		(14)
Foreign exchange gain/(loss)	(80)		117		(178)		284
Fair value change - warrants	(1,522)		—		(2,151)		—
Gain/(Loss) on disposal of assets	—		—		146		—
Other	60		499		174		502
	$	64	$	610	$	(413)	$	772

Restructuring Charges (Tables)

6 Months Ended

Jun. 30, 2023

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Expenses


	Balances				Cash		Balances
	March 31, 2023		Charges		(payments)		June 30, 2023
Employee severance and benefits	565		$	—	(251)		$	314
Legal and professional fees	27		16		(16)		27
Other	15		—		(15)		—
	$	607	$	16	$	(282)	$	341

Background and Basis of Presentation (Details)		6 Months Ended
Background and Basis of Presentation (Details)	Aug. 26, 2022	Jun. 30, 2023 segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of business segments		1
Reverse stock split, conversion ratio	0.04

Going Concern (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and cash equivalents	$ 1,803	$ 9,038

Net Loss per Share - Additional Information (Details) - shares	Apr. 30, 2023	Nov. 30, 2022	Sep. 30, 2022	Aug. 31, 2022	Aug. 31, 2021
Healios Framework Agreement
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares called by warrants (in shares)	3,685,000	9,109,090	2,000,000	1,920,000	400,000

Net Loss per Share - Instruments Excluded from Calculation of Diluted Net Loss Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net loss per share (in shares)	30,310,396	1,694,270	30,310,396	1,694,270
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net loss per share (in shares)	1,132,606	1,224,505	1,132,606	1,224,505
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net loss per share (in shares)	525,239	69,765	525,239	69,765
Convertible Note
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net loss per share (in shares)	11,538,461	0	11,538,461	0
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of net loss per share (in shares)	17,114,090	400,000	17,114,090	400,000

Property and Equipment, net - Schedule of Property and Equipment, net (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 14,068	$ 13,823
Accumulated depreciation and amortization	(9,435)	(9,609)
Property and equipment, net	4,633	4,214
Laboratory equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,224	7,576
Office equipment and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,933	3,934
Equipment not yet in service
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,911	$ 2,313

Property and Equipment, net - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Property, Plant and Equipment [Abstract]
Loss from impairment of assets					$ 7,200
Disposal of assets			$ 400	$ 0
Accelerated depreciation			300	400
Gain/(Loss) on disposal of assets	$ 0	$ 0	146	$ 0
Lease right-of-use-asset impairment	$ 7,500		$ 7,500

Collaborative Arrangements and Revenue Recognition - Additional Information (Details)	1 Months Ended		3 Months Ended		12 Months Ended
	Sep. 30, 2022 USD ($) shares	Aug. 31, 2021 USD ($) shares	Jun. 30, 2023 USD ($) performanceObligation	Jun. 30, 2022 USD ($)	Dec. 31, 2017 milestone	Apr. 30, 2023 shares	Dec. 31, 2022 USD ($)	Nov. 30, 2022 shares	Aug. 31, 2022 shares
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of performance obligation for services necessary for regulatory approvals \| performanceObligation			1
Minimum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable, payments due within period of invoicing			30 days
Maximum
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable, payments due within period of invoicing			45 days
Healios Framework Agreement
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Accounts receivable from Healios			$ 700,000	$ 600,000
Potential revenue from milestones		$ 3,000,000
Milestones obligated to pay							$ 1,100,000
Received milestones payment	$ 1,900,000
Warrants issued (in shares) \| shares		2
Shares called by warrants (in shares) \| shares	2,000,000	400,000				3,685,000		9,109,090	1,920,000
Revenue recognized			0	2,300,000
Revenue recognized from performance obligations satisfied in previous periods			$ 0	$ 0
Healios \| Regulatory and sales milestones
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of future milestones achieved \| milestone					2

Collaborative Arrangements and Revenue Recognition - Schedule of Contract Revenues Disaggregated by Timing of Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	$ 49	$ 2,316	$ 49	$ 5,228
Healios \| Point in Time
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	49	0	49	0
Healios \| Point in Time \| Product supply revenue
Disaggregation of Revenue [Line Items]
Total disaggregated revenues		0		0
Healios \| Point in Time \| Service revenue
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	0	0	0	0
Healios \| Over Time
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	0	2,316	0	5,228
Healios \| Over Time \| Product supply revenue
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	0	0	0	0
Healios \| Over Time \| Service revenue
Disaggregation of Revenue [Line Items]
Total disaggregated revenues	$ 0	$ 2,316	$ 0	$ 5,228

Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Stock-Based Compensation (Details) - USD ($) $ in Millions	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0.6	$ 1.9
Unrecognized compensation cost of unvested stock awards	$ 3.8		$ 3.8
2019 Equity And Incentive Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for equity incentive plan (in shares)	1,700,000		1,700,000
Common stock shares issued (in shares)			961,333
Shares available for issuance (in shares)	84,103		84,103
Shares of common stock outstanding (in shares)	1,228,345		1,228,345
Expired Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock shares issued (in shares)			11,289
Shares of common stock outstanding (in shares)	21,092		21,092
Inducement Awards Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock outstanding (in shares)	429,500		429,500

Stockholders’ Equity and Warrants (Details) - USD ($)
$ / shares in Units, $ in Thousands

1 Months Ended

3 Months Ended

6 Months Ended

Apr. 18, 2023

Apr. 17, 2023

Nov. 09, 2022

Sep. 22, 2022

Aug. 29, 2022

Aug. 17, 2022

Aug. 15, 2022

May 12, 2022

Aug. 31, 2021

Jun. 30, 2021

Jun. 30, 2023

Sep. 30, 2022

Jun. 30, 2022

Jun. 30, 2023

Jun. 30, 2022

Mar. 31, 2023

Dec. 31, 2022

Class of Stock [Line Items]

Common stock, shares authorized (in shares)

600,000,000

Preferred stock, shares authorized (in shares)

10,000,000

Preferred stock, shares issued (in shares)

Gain on change in fair value of warrants

$ (1,522)

$ 0

$ (2,151)

$ 0

Reclass of warrant liability to additional paid-in capital upon exercise

^[1]

2,685

Fair value of warrant liabilities

15,825

$ 0

Healios

Class of Stock [Line Items]

Warrant, exercise cap triggering percentage

19.90%

Warrants

Class of Stock [Line Items]

Fair value of warrant liabilities

$ 1,163

$ 534

August 2022 Common Warrant

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,920,000

August 2022 Warrant

Class of Stock [Line Items]

Exercise price of warrant (in dollars per share)

$ 0.96

September Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,760,000

Pre-Funded Warrants and Common Warrants

Class of Stock [Line Items]

Gain on change in fair value of warrants

(1,500)

Issuance costs allocated to warrant liabilities

$ 500

Warrant issuance costs allocated to equity

400

Pre-Funded Warrants and Common Warrants | Warrants

Class of Stock [Line Items]

Fair value of warrant liabilities

$ (2,200)

April 2023 Pre-Funded Warrants

Class of Stock [Line Items]

Warrants outstanding (in shares)

557,000

Healios | 2021 Warrants

Class of Stock [Line Items]

Shares called by warrants (in shares)

400,000

Healios | 2021 Warrant, Type One

Class of Stock [Line Items]

Exercise price of warrant (in dollars per share)

$ 45.00

Warrants, exercisable period

60 days

Shares called by warrants (in shares)

120,000

Healios | 2021 Warrant, Type Two

Class of Stock [Line Items]

Exercise price of warrant (in dollars per share)

$ 60.0

Warrants, exercisable period

60 days

Shares called by warrants (in shares)

280,000

Aspire Capital

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,003,560

Offering price (in dollars per share)

$ 9.67

Placement Agency Agreement With Alliance Global Partners | Alliance Global Partners

Class of Stock [Line Items]

Placement fee

$ 200

$ 400

$ 800

Placement fee reimbursement

$ 100

August 2022 Purchase Agreement

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,200,000

Proceeds from the issuance of common stock and warrants, net of issuance cost

$ 11,000

Participation right percentage

30.00%

August 2022 Purchase Agreement | August 2022 Pre-Funded Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

720,000

Number of shares called by each warrant (in shares)

Exercise price of warrant (in dollars per share)

$ 0.0025

Gain on change in fair value of warrants

$ 800

Reclass of warrant liability to additional paid-in capital upon exercise

$ 3,800

August 2022 Purchase Agreement | August 2022 Common Warrant

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,920,000

Number of shares called by each warrant (in shares)

Exercise price of warrant (in dollars per share)

$ 6.385

Warrants, exercisable period

6 months

Warrants term

5 years

August 2022 Purchase Agreement | August 2022 Warrant

Class of Stock [Line Items]

Exercise price of warrant (in dollars per share)

$ 6.25

August 2022 Purchase Agreement | Common Stock

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

August 2022 Purchase Agreement | Common Stock | August 2022 Pre-Funded Warrants

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

August 2022 Purchase Agreement | Common Stock | August 2022 Common Warrant

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

August 2022 Purchase Agreement Amendment | August 2022 Common Warrant

Class of Stock [Line Items]

Warrants, exercisable period

6 months

Warrants term

7 years

August 2022 Purchase Agreement Amendment | September Warrants

Class of Stock [Line Items]

Exercise price of warrant (in dollars per share)

$ 6.385

Warrants term

7 years

Shares called by warrants (in shares)

2,000,000

November 2022 Purchase Agreement

Class of Stock [Line Items]

Shares issued and sold (in shares)

3,927,275

Proceeds from the issuance of common stock and warrants, net of issuance cost

$ 5,000

November 2022 Purchase Agreement | November 2022 Pre-Funded Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,077,270

Number of shares called by each warrant (in shares)

Exercise price of warrant, price difference (in dollars per share)

$ 0.0001

November 2022 Purchase Agreement | November 2022 Common Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

10,009,090

Number of shares called by each warrant (in shares)

Exercise price of warrant (in dollars per share)

$ 1.10

Warrants term

5 years

November 2022 Purchase Agreement | Common Stock

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

November 2022 Purchase Agreement | Common Stock | November 2022 Pre-Funded Warrants

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

November 2022 Purchase Agreement | Common Stock | November 2022 Common Warrants

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

April 2023 Purchase Agreement

Class of Stock [Line Items]

Shares issued and sold (in shares)

2,315,000

Exercise price of warrant (in dollars per share)

$ 1.00

Proceeds from the issuance of common stock and warrants, net of issuance cost

$ 3,400

April 2023 Purchase Agreement | April 2023 Pre-Funded Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

1,370,000

Number of shares called by each warrant (in shares)

Exercise price of warrant (in dollars per share)

$ 0.0001

April 2023 Purchase Agreement | April 2023 Common Warrants

Class of Stock [Line Items]

Shares issued and sold (in shares)

3,685,000

Number of shares called by each warrant (in shares)

Exercise price of warrant (in dollars per share)

$ 0.96

Warrants, exercisable period

6 months

Warrants term

7 years

April 2023 Purchase Agreement | Common Stock

Class of Stock [Line Items]

Number of shares called by each warrant (in shares)

2022 Equity Facility | Aspire Capital

Class of Stock [Line Items]

Number of shares committed to be purchased (in shares)

$ 100,000

2021 Equity Facility | Aspire Capital

Class of Stock [Line Items]

Number of shares committed to be purchased (in shares)

$ 100,000

Common stock registered for resale (in shares)

1,600,000

[1]	Warrant reclassification (Footnote 9 Fair Value Measurements)

Fair Value Measurements - Reconciliation of Warrant Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0
Ending balance	(15,825)	$ 0
Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	(1,163)	(534)
Fair Value Adjustment	(1,522)	(629)
Reclassification to Additional paid in capital	2,685
Ending balance	$ 0	$ (1,163)

Fair Value Measurements - Reconciliation of Notes Payable (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2023 USD ($)	May 17, 2023
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning period	$ 0
Ending period	15,825
Notes Payable to Banks
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning period	0
Initial Transaction Fair Value	15,000
Fair Value Adjustment	640
Ending period	$ 15,640
Notes Payable to Banks \| Measurement Input, Price Volatility
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt, measurement input	0.506	0.495
Notes Payable to Banks \| Measurement input, Bond Yield Rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Debt, measurement input	0.196	0.189
Payment in Kind (PIK) Note
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning period	$ 0
Initial Transaction Fair Value	185
Ending period	$ 185

Other Income and Expenses (Details) - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2023

Jun. 30, 2022

Jun. 30, 2023

Jun. 30, 2022

Other Income and Expenses [Abstract]

Gain/(Loss) from extinguishment of debt

$ 2,612

$ 0

$ 2,612

$ 0

Change in fair value - note payable

(640)

Interest expense

(366)

(6)

(376)

(14)

Foreign exchange gain/(loss)

(80)

117

(178)

284

Fair value change - warrants

(1,522)

(2,151)

Gain/(Loss) on disposal of assets

146

Other

499

174

502

Other (expense) income, net

^[1]

$ 64

$ 610

$ (413)

$ 772

[1]	See Footnote 10 for components of other (expense) income, net

Forbearance Agreement and Convertible Note (Details) - USD ($)		3 Months Ended		6 Months Ended
	May 17, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Debt Instrument [Line Items]
Forbearance Agreement, deferred accounts payable	$ 11,800,000
Forbearance Agreement, deferred accounts payable, monthly payments	250,000
Deferred accounts payable, fair value	$ 7,900,000
Gain/(Loss) from extinguishment of debt		$ 2,612,000	$ 0	$ 2,612,000	$ 0
Fair value of the Notes		15,800,000		15,800,000
Changes in fair value reported in earnings		800,000
Paid-in-Kind interest		200,000
Change in fair value of Note Payables		$ 640,000	$ 0	$ 640,000	$ 0
Forbearance Agreement, deferred accounts payable, payment term	48 months
Forbearance Agreement, deferred accounts payable, cash payment not paid when due subject to interest rate	10.00%
Forbearance Agreement, deferred accounts payable, cash payment due benchmark period	60 days
Convertible Note \| 10.0% Convertible Note Due May 17, 2026
Debt Instrument [Line Items]
Debt, principal amount	$ 15,000,000
Debt, interest rate	10.00%
Debt, Event of Default, payment	$ 3,000,000
Debt, Event of Default, interest rate	14.00%
Convertible note, beneficial ownership limitation	19.99%
Conversion price (in USD per share)	$ 1.30
Convertible note, conversion period after date of issuance	18 months
Debt issuance costs	$ 16,679
Debt conversion, shares issued	11,538,461
Debt, Event of Default, percentage of principal for acceleration of maturity	100.00%
Debt, Event of Default, percentage of principal automatically and immediately due	100.00%
Debt, Event of Default, judgement payment rendered against the Company	$ 3,000,000

Restructuring Charges - Additional Information (Details)	1 Months Ended
	Jun. 30, 2022
Restructuring and Related Activities [Abstract]
Percentage of reduction in workforce	70.00%

Restructuring Charges - Schedule of Restructuring Reserve (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2023 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 607
Charges	16
Cash payments	(282)
Ending balance	341
Employee severance and benefits
Restructuring Reserve [Roll Forward]
Beginning balance	565
Charges	0
Cash payments	(251)
Ending balance	314
Legal and professional fees
Restructuring Reserve [Roll Forward]
Beginning balance	27
Charges	16
Cash payments	(16)
Ending balance	27
Other
Restructuring Reserve [Roll Forward]
Beginning balance	15
Charges	0
Cash payments	(15)
Ending balance	$ 0

Subsequent Event (Details) - Subsequent Event $ in Thousands	Aug. 09, 2023 USD ($)	Aug. 07, 2023 patient
Subsequent Event [Line Items]
Number of patient in clinic trial \| patient		300
Consulting services fees received \| $	$ 150

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