LBPH Longboard Pharmaceuticals Inc

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14D-9

Solicitation/Recommendation Statement

Under Section 14(d)(4) of the Securities Exchange Act of 1934

Longboard Pharmaceuticals, Inc.

(Name of Subject Company)

Longboard Pharmaceuticals, Inc.

(Name of Person(s) Filing Statement)

Common Stock, $0.0001 par value per share

(Title of Class of Securities)

54300N103

(CUSIP Number of Class of Securities)

Kevin R. Lind

President and Chief Executive Officer

Longboard Pharmaceuticals, Inc.

4275 Executive Square, Suite 950

La Jolla, California 92037

(858) 789-9283

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications

on Behalf of the Person Filing Statement)

With copies to:

Kevin Cooper, Esq.

Steven M. Przesmicki, Esq.

Cooley LLP

55 Hudson Yards

New York, NY 10001

(212) 479-6000

This Schedule 14D-9 filing consists of certain communications relating to the proposed acquisition of Longboard Pharmaceuticals, Inc., a Delaware corporation (the “Company”), by H. Lundbeck A/S, a Danish aktieselskab (“Parent”), pursuant to the terms and subject to the conditions of an Agreement and Plan of Merger, dated as of October 14, 2024 (the “Merger Agreement”), by and among the Company, Parent, Lundbeck LLC, a Delaware limited liability company and an indirect wholly owned subsidiary of Parent (“Payor”), and Langkawi Corporation, a Delaware corporation and a direct wholly owned subsidiary of Payor (“Purchaser”). Pursuant to the Merger Agreement, upon the terms and subject to the conditions thereof, Purchaser will commence a cash tender offer (the “Offer”) no later than 15 business days after the date of the Merger Agreement. The Offer will consist of an offer to purchase all of the outstanding shares of common stock of the Company, par value $0.0001 per share (the “Shares”) at a price of $60 per Share, in cash, without interest and subject to any applicable withholding of taxes. If successful, the Offer will be followed by a merger of Purchaser, with and into the Company (the “Merger”) in accordance with Section 251(h) of the Delaware General Corporation Law (“the “DGCL”), with the Company continuing as the surviving corporation in the Merger as an indirect wholly owned subsidiary of Payor in accordance with the DGCL.

This Schedule 14D-9 filing consists of the following documents relating to the proposed Offer and the Merger

IMPORTANT INFORMATION FOR INVESTORS AND SECURITY HOLDERS

The tender offer (the Offer) for the outstanding common stock of Longboard referred to in this corporate release has not yet commenced. The description contained in this corporate release is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the tender offer materials that Lundbeck and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (the SEC). The solicitation and offer to buy the common stock of Longboard will only be made pursuant to an offer to purchase and related tender offer materials. At the time the Offer is commenced, Lundbeck will file a tender offer statement on Schedule TO and thereafter Longboard will file a solicitation/recommendation statement on Schedule 14D-9 with the SEC with respect to the Offer. THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. ANY HOLDERS OF SHARES ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES.

The offer to purchase, the related letter of transmittal and the solicitation/recommendation statement will be made available for free at the SEC’s website at www.sec.gov. Free copies of the offer to purchase, the related letter of transmittal and certain other offering documents will be made available by Lundbeck and when available may be obtained by directing a request to the Information Agent for the tender offer which will be named in the Schedule TO. Copies of the documents filed with the SEC by Longboard will be available free of charge on Longboard’s internet website https://ir.longboardpharma.com/financial-information/sec-filings or by contacting Longboard’s investor relations contact at IR@LongboardPharma.com.

In addition to the offer to purchase, the related letter of transmittal and certain other tender offer documents filed by Lundbeck, as well as the solicitation/recommendation statement filed by Longboard, Longboard will also file annual, quarterly and current reports with the SEC. You may read and copy any reports or other information filed by Lundbeck or Longboard at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549.

Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Longboard’s filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Safe Harbor/Forward-Looking Statements

This corporate release contains forward-looking statements that provide our expectations or forecasts of future events such as new product introductions, product approvals and financial performance. Forward looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain words like “believe”, “anticipate”, “expect”, “estimate”, “intend”, “plan”, “project”, “will be”, “will continue”, “will result”, “could”, “may”, “might”, or any variations of such words or other words with similar meanings. All statements other than statements of historical facts included in this corporate release, including, without limitation, those regarding Lundbeck and Longboard’s financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Lundbeck and Longboard’s products), are forward looking statements.

Such forward looking statements involve known and unknown risks, uncertainties and other factors which may cause Lundbeck and Longboard’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward looking statements. Factors that may affect future results include, among others, interest rate and currency exchange rate fluctuations; delay or failure of development projects, production or distribution problems; unexpected contract breaches or terminations; government-mandated or market-driven price decreases for Lundbeck’s products; introduction of competing products; Lundbeck’s ability to successfully market both new and existing products; exposure to product liability and other lawsuits; changes in reimbursement rules and governmental laws and related interpretation thereof; and unexpected growth in costs and expenses. Additional risks and uncertainties include, but are not limited to, risks related to Lundbeck’s ability to complete the transaction on the proposed terms and schedule; whether the tender offer conditions will be satisfied; whether sufficient stockholders of Longboard tender their shares in the transaction; the outcome of legal proceedings that may be instituted against Longboard and/or others relating to the transaction; the failure to receive (or delay in receiving) the required regulatory approvals relating to the transaction; the possibility that competing offers will be made; risks associated with acquisitions, such as the risk that the businesses will not be integrated successfully, that such integration may be more difficult, time-consuming or costly than expected or that the expected benefits of the transaction will not occur; risks related to future opportunities and plans for Longboard and its products, including uncertainty of the expected financial performance of Longboard and its products; disruption from the proposed transaction, making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; the occurrence of any event, change or other circumstance that could give rise to the termination of the acquisition agreement; and other uncertainties pertaining to the business of Longboard, including those detailed in Longboard’s public filings with the SEC from time to time, including Longboard’s most recent Annual Report on Form 10-K for the year ended December 31, 2023 and its subsequent Quarterly Reports on Form 10-Q. The reader is cautioned not to unduly rely on these forward-looking statements. The forward-looking statements in this corporate release and any oral presentations speak only as at the date of this corporate release. Longboard and Lundbeck disclaim any intent or obligation to update or revise these forward-looking statements, or to confirm such statements to reflect subsequent events or circumstances after the date of the corporate release or in relation to actual results, other than as may be required under applicable law or applicable stock exchange regulations.

Certain assumptions made by Lundbeck are required by Danish Securities Law for full disclosure of material corporate information. Some assumptions, including assumptions relating to sales associated with products that are prescribed for unapproved uses, are made considering past performances of other similar drugs for similar disease states or past performance of the same drug in other regions where the product is currently marketed. It is important to note that although physicians may, as part of their freedom to practice medicine in the US, prescribe approved drugs for any use they deem appropriate, including unapproved uses, at Lundbeck, promotion of unapproved uses is strictly prohibited.

Exhibit 99.1

PRIVILEGED AND CONFIDENTIAL

All Employees Email for Transaction Announcement

Longboard team,

As you may have seen, we just announced that Longboard Pharmaceuticals has entered into a merger agreement with H. Lundbeck A/S (Lundbeck) under which Lundbeck will acquire Longboard at a price of $60 per share. You can read our joint press release announcing the transaction here. https://ir.longboardpharma.com/news-releases/news-release-details/lundbeck-acquire-longboard-pharmaceuticals-strategic-deal

I am exceptionally proud of the work we have done over the past several years to advance our clinical research across multiple therapeutic areas. Lundbeck is a global pharmaceutical company specializing in brain diseases. For more than 70 years, they have been at the forefront of neuroscience research. Lundbeck’s remarkable capabilities will accelerate our vision to deliver bexicaserin to as many DEE patients as possible. We believe this transaction signifies the best outcome for patients and our other key stakeholders. Charl van Zyl, President and CEO of Lundbeck, wanted to share the attached letter as an introduction to the Longboard team and looks forward to meeting you all very soon.

We are targeting to close the transaction in December 2024, subject to regulatory approvals, the tender of a majority of the outstanding shares of Longboard’s voting common stock, and other customary closing conditions.

In the interim, while we will work with Lundbeck on certain high-level transition planning matters, Longboard will continue to operate independently, and we will continue to stay focused on our daily responsibilities and business as usual. As such, today’s announcement will not impact our day-to-day activities, and it’s imperative that we all remain focused on our commitments to our clinical development activities for the benefit of patients.

We know that you will have questions, and we will schedule several meetings over the next week to provide you with more information. Please join us for an all company meeting on Monday, October 14, 2024, at 9am PT; you will receive an Outlook invitation with details shortly. Attached are FAQs for employees, but as with most transactions of this nature, it will take time to resolve many of the open questions you may have. With that said, we are committed to providing you with up-to-date information as it becomes available to us. We will include pertinent information on The Tide and Egnyte. In the meantime, if you have any questions, please feel free to send them to Brandi Roberts, Chief Financial Officer, at broberts@longboardpharma.com.

This is a critically important time for our company, and it is essential that we speak with one voice. Should you receive any calls or requests from the media or other interested parties, please do not respond, and instead direct all inquiries to Megan Knight, VP, Head of Investor Relations, at mknight@longboardpharma.com. In addition, please do not discuss and/or post about this announcement on social media, including by making, sharing, liking or commenting on any posts about or referring to the transaction.

The next few months will be a learning journey for all of us. Thank you for your continued commitment to Longboard, to the critical work we are doing, and to the patients we serve. This merger is possible due in no small part to the hard work and dedication of this team, and I am incredibly proud of the company we’ve built together.

Sincerely,

Kevin

An important note:

All Longboard employees are prohibited from discussing and/or posting about this announcement on social media, including by making, sharing, liking or commenting on any posts about or containing references to the proposed transaction. This includes posts by third parties. All questions regarding this should be directed to Megan Knight.

No engagement should be made externally or with vendors, HCPs, advocacy groups, or other external parties related to this announcement until directed.

Longboard employees are prohibited from speaking on behalf of the company. All external inquiries should be directed to Megan Knight.

IMPORTANT INFORMATION FOR INVESTORS AND SECURITY HOLDERS

The tender offer (the Offer) for the outstanding common stock of Longboard referred to in this corporate release has not yet commenced. The description contained in this corporate release is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the tender offer materials that Lundbeck and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (the SEC). The solicitation and offer to buy the common stock of Longboard will only be made pursuant to an offer to purchase and related tender offer materials. At the time the Offer is commenced, Lundbeck will file a tender offer statement on Schedule TO and thereafter Longboard will file a solicitation/recommendation statement on Schedule 14D-9 with the SEC with respect to the Offer. THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. ANY HOLDERS OF SHARES ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES.

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The offer to purchase, the related letter of transmittal and the solicitation/recommendation statement will be made available for free at the SEC’s website at www.sec.gov. Free copies of the offer to purchase, the related letter of transmittal and certain other offering documents will be made available by Lundbeck and when available may be obtained by directing a request to the Information Agent for the tender offer which will be named in the Schedule TO. Copies of the documents filed with the SEC by Longboard will be available free of charge on Longboard’s internet website https://ir.longboardpharma.com/financial-information/sec-filings or by contacting Longboard’s investor relations contact at IR@LongboardPharma.com.

In addition to the offer to purchase, the related letter of transmittal and certain other tender offer documents filed by Lundbeck, as well as the solicitation/recommendation statement filed by Longboard, Longboard will also file annual, quarterly and current reports with the SEC. You may read and copy any reports or other information filed by Lundbeck or Longboard at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Longboard’s filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Safe Harbor/Forward-Looking Statements

This corporate release contains forward-looking statements that provide our expectations or forecasts of future events such as new product introductions, product approvals and financial performance. Forward looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain words like “believe”, “anticipate”, “expect”, “estimate”, “intend”, “plan”, “project”, “will be”, “will continue”, “will result”, “could”, “may”, “might”, or any variations of such words or other words with similar meanings. All statements other than statements of historical facts included in this corporate release, including, without limitation, those regarding Lundbeck and Longboard’s financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Lundbeck and Longboard’s products), are forward looking statements.

Such forward looking statements involve known and unknown risks, uncertainties and other factors which may cause Lundbeck and Longboard’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward looking statements. Factors that may affect future results include, among others, interest rate and currency exchange rate fluctuations; delay or failure of development projects, production or distribution problems; unexpected contract breaches or terminations; government-mandated or market-driven price decreases for Lundbeck’s products; introduction of competing products; Lundbeck’s ability to successfully market both new and existing products; exposure to product liability and other lawsuits; changes in reimbursement rules and governmental laws and related interpretation thereof; and unexpected growth in costs and expenses. Additional risks and uncertainties include, but are not limited to, risks related to Lundbeck’s ability to complete the transaction on the proposed terms and schedule; whether the tender offer conditions will be satisfied; whether sufficient stockholders of Longboard tender their shares in the transaction; the outcome of legal proceedings that may be instituted against Longboard and/or others relating to the transaction; the failure to receive (or delay in receiving) the required

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regulatory approvals relating to the transaction; the possibility that competing offers will be made; risks associated with acquisitions, such as the risk that the businesses will not be integrated successfully, that such integration may be more difficult, time-consuming or costly than expected or that the expected benefits of the transaction will not occur; risks related to future opportunities and plans for Longboard and its products, including uncertainty of the expected financial performance of Longboard and its products; disruption from the proposed transaction, making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; the occurrence of any event, change or other circumstance that could give rise to the termination of the acquisition agreement; and other uncertainties pertaining to the business of Longboard, including those detailed in Longboard’s public filings with the SEC from time to time, including Longboard’s most recent Annual Report on Form 10-K for the year ended December 31, 2023 and its subsequent Quarterly Reports on Form 10-Q. The reader is cautioned not to unduly rely on these forward-looking statements. The forward-looking statements in this corporate release and any oral presentations speak only as at the date of this corporate release. Longboard and Lundbeck disclaim any intent or obligation to update or revise these forward-looking statements, or to confirm such statements to reflect subsequent events or circumstances after the date of the corporate release or in relation to actual results, other than as may be required under applicable law or applicable stock exchange regulations.

Certain assumptions made by Lundbeck are required by Danish Securities Law for full disclosure of material corporate information. Some assumptions, including assumptions relating to sales associated with products that are prescribed for unapproved uses, are made considering past performances of other similar drugs for similar disease states or past performance of the same drug in other regions where the product is currently marketed. It is important to note that although physicians may, as part of their freedom to practice medicine in the US, prescribe approved drugs for any use they deem appropriate, including unapproved uses, at Lundbeck, promotion of unapproved uses is strictly prohibited.

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Exhibit 99.2

Frequently Asked Questions for Employees

About the Transaction with Lundbeck

My Employment

Cash Compensation

Equity/Long-Term Incentives

Benefits

Severance

Performance Management and Goal Setting

Employees and managers should expect to complete 2024 performance reviews and ratings in Lattice; timelines will be announced in the near future.

Business Operations

Additional Questions

The material in this FAQ is intended to provide a summary of potential employment implications based on the acquisition. In the event there is a conflict between the information in this FAQ and any official Longboard severance plan document or merger agreement, the official severance plan document and/or the merger agreement will control.

IMPORTANT INFORMATION FOR INVESTORS AND SECURITY HOLDERS

The tender offer (the Offer) for the outstanding common stock of Longboard referred to in this corporate release has not yet commenced. The description contained in this corporate release is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the tender offer materials that Lundbeck and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (the SEC). The solicitation and offer to buy the common stock of Longboard will only be made pursuant to an offer to purchase and related tender offer materials. At the time the Offer is commenced, Lundbeck will file a tender offer statement on Schedule TO and thereafter Longboard will file a solicitation/recommendation statement on Schedule 14D-9 with the SEC with respect to the Offer. THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. ANY HOLDERS OF SHARES ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES.

The offer to purchase, the related letter of transmittal and the solicitation/recommendation statement will be made available for free at the SEC’s website at www.sec.gov. Free copies of the offer to purchase, the related letter of transmittal and certain other offering documents will be made available by Lundbeck and when available may be obtained by directing a request to the Information Agent for the tender offer which will be named in the Schedule TO. Copies of the documents filed with the SEC by Longboard will be available free of charge on Longboard’s internet website https://ir.longboardpharma.com/financial-information/sec-filings or by contacting Longboard’s investor relations contact at IR@LongboardPharma.com.

In addition to the offer to purchase, the related letter of transmittal and certain other tender offer documents filed by Lundbeck, as well as the solicitation/recommendation statement filed by Longboard, Longboard will also file annual, quarterly and current reports with the SEC. You may read and copy any reports or other information filed by Lundbeck or Longboard at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Longboard’s filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Safe Harbor/Forward-Looking Statements

This corporate release contains forward-looking statements that provide our expectations or forecasts of future events such as new product introductions, product approvals and financial performance. Forward looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain words like “believe”, “anticipate”, “expect”, “estimate”, “intend”, “plan”, “project”, “will be”, “will continue”, “will result”, “could”, “may”, “might”, or any variations of such words or other words with similar meanings. All statements other than statements of historical facts included in this corporate release, including, without limitation, those regarding Lundbeck and Longboard’s financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Lundbeck and Longboard’s products), are forward looking statements.

Such forward looking statements involve known and unknown risks, uncertainties and other factors which may cause Lundbeck and Longboard’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward looking statements. Factors that may affect future results include, among others, interest rate and currency exchange rate fluctuations; delay or failure of development projects, production or distribution problems; unexpected contract breaches or terminations; government-mandated or market-driven price decreases for Lundbeck’s products; introduction of competing products; Lundbeck’s ability to successfully market both new and existing products; exposure to product liability and other lawsuits; changes in reimbursement rules and governmental laws and related interpretation thereof; and unexpected growth in costs and expenses. Additional risks and uncertainties include, but are not limited to, risks related to Lundbeck’s ability to complete the transaction on the proposed terms and schedule; whether the tender offer conditions will be satisfied; whether sufficient stockholders of Longboard tender their shares in the transaction; the outcome of legal proceedings that may be instituted against Longboard and/or others relating to the transaction; the failure to receive (or delay in receiving) the required regulatory approvals relating to the transaction; the possibility that competing offers will be made; risks associated with acquisitions, such as the risk that the businesses will not be integrated successfully, that such integration may be more difficult, time-consuming or costly than expected or that the expected benefits of the transaction will not occur; risks related to future opportunities and plans for Longboard and its products, including uncertainty of the expected financial performance of Longboard and its products; disruption from the proposed transaction, making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; the occurrence of any event, change or other circumstance that could give rise to the termination of the acquisition agreement; and other uncertainties pertaining to the business of Longboard, including those detailed in Longboard’s public filings with the SEC from time to time, including Longboard’s most recent Annual Report on Form 10-K for the year ended December 31, 2023 and its subsequent Quarterly Reports on Form 10-Q. The reader is cautioned not to unduly rely on these forward-looking statements. The forward-looking statements in this corporate release and any oral presentations speak only as at the date of this corporate release. Longboard and Lundbeck disclaim any intent or obligation to update or revise these forward-looking statements, or to confirm such statements to reflect subsequent events or circumstances after the date of the corporate release or in relation to actual results, other than as may be required under applicable law or applicable stock exchange regulations.

Certain assumptions made by Lundbeck are required by Danish Securities Law for full disclosure of material corporate information. Some assumptions, including assumptions relating to sales associated with products that are prescribed for unapproved uses, are made considering past performances of other similar drugs for similar disease states or past performance of the same drug in other regions where the product is currently marketed. It is important to note that although physicians may, as part of their freedom to practice medicine in the US, prescribe approved drugs for any use they deem appropriate, including unapproved uses, at Lundbeck, promotion of unapproved uses is strictly prohibited.

Exhibit 99.3

Email from Charl to Longboard employees.

Subject: A message from Charl van Zyl, President and CEO of Lundbeck

Dear Longboard Team,

I hope this message finds you well. As you may have seen, we have just announced a definitive agreement for Lundbeck to acquire Longboard Pharmaceuticals. I understand this news might come as a surprise, especially on a Sunday night, so I want to extend my warmest regards from the entire Lundbeck organization. We are thrilled at the prospect of joining forces with such a talented and dedicated team!

When I look at our two companies, I see great potential. Both of our organizations are driven by a shared purpose: advancing treatments for neurological conditions and transforming the lives of patients, their families, and society at large. Your remarkable work in developing bexicaserin has not gone unnoticed. The dedication and innovation demonstrated by the Longboard team are truly commendable. The initiation of the global phase III trial (DEEp SEA) for Dravet syndrome in September 2024 is a testament to your hard work and commitment.

The potential integration of Longboard Pharmaceuticals into the Lundbeck business represents a significant step forward in our Focused Innovator strategy. By adding a highly innovative product in an area of high unmet medical need, we are not only enhancing our capabilities within neuro-rare conditions but also reinforcing our commitment to delivering transformative treatments to patients worldwide.

I would like to extend my gratitude to Kevin and the team for their work to-date. Through this collaboration, we have developed a strong vision for the future of Longboard Pharmaceuticals within Lundbeck after closing.

We now await regulatory approvals and completion of the tender offer to acquire the outstanding common stock of Longboard, with an expected close in December 2024. Until then, we will continue to operate as separate entities. Once the acquisition is finalized and closed, we can begin our integration process, which I am eagerly looking forward to!

Kevin has invited me and a few colleagues from management to attend a town hall meeting later this week. We will be available to answer some questions and present key information about Lundbeck.

Thank you for your continued dedication and support! We look forward to achieving great things together as one united team.

Warm regards,

Charl van Zyl

President and CEO, Lundbeck A/S

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IMPORTANT INFORMATION FOR INVESTORS AND SECURITY HOLDERS

The tender offer (the Offer) for the outstanding common stock of Longboard referred to in this corporate release has not yet commenced. The description contained in this corporate release is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the tender offer materials that Lundbeck and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (the SEC). The solicitation and offer to buy the common stock of Longboard will only be made pursuant to an offer to purchase and related tender offer materials. At the time the Offer is commenced, Lundbeck will file a tender offer statement on Schedule TO and thereafter Longboard will file a solicitation/recommendation statement on Schedule 14D-9 with the SEC with respect to the Offer. THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. ANY HOLDERS OF SHARES ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES.

The offer to purchase, the related letter of transmittal and the solicitation/recommendation statement will be made available for free at the SEC’s website at www.sec.gov. Free copies of the offer to purchase, the related letter of transmittal and certain other offering documents will be made available by Lundbeck and when available may be obtained by directing a request to the Information Agent for the tender offer which will be named in the Schedule TO. Copies of the documents filed with the SEC by Longboard will be available free of charge on Longboard’s internet website https://ir.longboardpharma.com/financial-information/sec-filings or by contacting Longboard’s investor relations contact at IR@LongboardPharma.com.

In addition to the offer to purchase, the related letter of transmittal and certain other tender offer documents filed by Lundbeck, as well as the solicitation/recommendation statement filed by Longboard, Longboard will also file annual, quarterly and current reports with the SEC. You may read and copy any reports or other information filed by Lundbeck or Longboard at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Longboard’s filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Safe Harbor/Forward-Looking Statements

This corporate release contains forward-looking statements that provide our expectations or forecasts of future events such as new product introductions, product approvals and financial performance. Forward looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain words like “believe”, “anticipate”, “expect”, “estimate”, “intend”, “plan”, “project”, “will be”, “will continue”, “will result”, “could”, “may”, “might”, or any variations of such words or other words with similar meanings. All statements other than statements of historical facts included in this corporate release, including, without limitation, those regarding Lundbeck and Longboard’s financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Lundbeck and Longboard’s products), are forward looking statements.

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Such forward looking statements involve known and unknown risks, uncertainties and other factors which may cause Lundbeck and Longboard’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward looking statements. Factors that may affect future results include, among others, interest rate and currency exchange rate fluctuations; delay or failure of development projects, production or distribution problems; unexpected contract breaches or terminations; government-mandated or market-driven price decreases for Lundbeck’s products; introduction of competing products; Lundbeck’s ability to successfully market both new and existing products; exposure to product liability and other lawsuits; changes in reimbursement rules and governmental laws and related interpretation thereof; and unexpected growth in costs and expenses. Additional risks and uncertainties include, but are not limited to, risks related to Lundbeck’s ability to complete the transaction on the proposed terms and schedule; whether the tender offer conditions will be satisfied; whether sufficient stockholders of Longboard tender their shares in the transaction; the outcome of legal proceedings that may be instituted against Longboard and/or others relating to the transaction; the failure to receive (or delay in receiving) the required regulatory approvals relating to the transaction; the possibility that competing offers will be made; risks associated with acquisitions, such as the risk that the businesses will not be integrated successfully, that such integration may be more difficult, time-consuming or costly than expected or that the expected benefits of the transaction will not occur; risks related to future opportunities and plans for Longboard and its products, including uncertainty of the expected financial performance of Longboard and its products; disruption from the proposed transaction, making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; the occurrence of any event, change or other circumstance that could give rise to the termination of the acquisition agreement; and other uncertainties pertaining to the business of Longboard, including those detailed in Longboard’s public filings with the SEC from time to time, including Longboard’s most recent Annual Report on Form 10-K for the year ended December 31, 2023 and its subsequent Quarterly Reports on Form 10-Q. The reader is cautioned not to unduly rely on these forward-looking statements. The forward-looking statements in this corporate release and any oral presentations speak only as at the date of this corporate release. Longboard and Lundbeck disclaim any intent or obligation to update or revise these forward-looking statements, or to confirm such statements to reflect subsequent events or circumstances after the date of the corporate release or in relation to actual results, other than as may be required under applicable law or applicable stock exchange regulations.

Certain assumptions made by Lundbeck are required by Danish Securities Law for full disclosure of material corporate information. Some assumptions, including assumptions relating to sales associated with products that are prescribed for unapproved uses, are made considering past performances of other similar drugs for similar disease states or past performance of the same drug in other regions where the product is currently marketed. It is important to note that although physicians may, as part of their freedom to practice medicine in the US, prescribe approved drugs for any use they deem appropriate, including unapproved uses, at Lundbeck, promotion of unapproved uses is strictly prohibited.

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Exhibit 99.4

Dear NAME,

I am writing to share the exciting news (linked here) that H. Lundbeck A/S (Lundbeck) and Longboard Pharmaceuticals (Longboard) have entered into an agreement for Lundbeck to acquire Longboard. Together, we share a strong vision to advance treatments for neurological conditions and to transform the lives of patients and their families.

Longboard provides Lundbeck with a unique opportunity to significantly enhance its neuroscience pipeline and address a critical unmet need for patients suffering from rare and severe epilepsies; including those with Developmental and Epileptic Encephalopathies (DEEs). Through this acquisition, Lundbeck will add bexicaserin, an oral, centrally acting 5-hydroxytryptamine 2C (5-HT2C) receptor superagonist to its clinical pipeline.

Bexicaserin was granted Breakthrough Therapy designation by U.S. Food and Drug Administration (FDA) for the treatment of seizures associates with DEEs. Bexicaserin is currently being evaluated in a global Phase III clinical program (the DEEp Program). We believe bexicaserin has the potential to change the standard of care in DEEs, and offer access to a broad range of patients.

We anticipate the transaction will close in Q4 2024, subject to the fulfillment of customary closing conditions. Until closing, both organizations will continue to operate independently. We remain as focused as ever on our responsibilities so that we can continue making a difference in the lives of patients and their families.

As always, please feel free to reach out to me directly should you have further questions.

Thank you for your support.

Sincerely,

NAME

IMPORTANT INFORMATION FOR INVESTORS AND SECURITY HOLDERS

The tender offer (the Offer) for the outstanding common stock of Longboard referred to in this corporate release has not yet commenced. The description contained in this corporate release is neither an offer to purchase nor a solicitation of an offer to sell any securities, nor is it a substitute for the tender offer materials that Lundbeck and its acquisition subsidiary will file with the U.S. Securities and Exchange Commission (the SEC). The solicitation and offer to buy the common stock of Longboard will only be made pursuant to an offer to purchase and related tender offer materials. At the time the Offer is commenced, Lundbeck will file a tender offer statement on

Schedule TO and thereafter Longboard will file a solicitation/recommendation statement on Schedule 14D-9 with the SEC with respect to the Offer. THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 WILL CONTAIN IMPORTANT INFORMATION. ANY HOLDERS OF SHARES ARE URGED TO READ THESE DOCUMENTS CAREFULLY WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT HOLDERS SHOULD CONSIDER BEFORE MAKING ANY DECISION REGARDING TENDERING THEIR SHARES.

The offer to purchase, the related letter of transmittal and the solicitation/recommendation statement will be made available for free at the SEC’s website at www.sec.gov. Free copies of the offer to purchase, the related letter of transmittal and certain other offering documents will be made available by Lundbeck and when available may be obtained by directing a request to the Information Agent for the tender offer which will be named in the Schedule TO. Copies of the documents filed with the SEC by Longboard will be available free of charge on Longboard’s internet website https://ir.longboardpharma.com/financial-information/sec-filings or by contacting Longboard’s investor relations contact at IR@LongboardPharma.com.

In addition to the offer to purchase, the related letter of transmittal and certain other tender offer documents filed by Lundbeck, as well as the solicitation/recommendation statement filed by Longboard, Longboard will also file annual, quarterly and current reports with the SEC. You may read and copy any reports or other information filed by Lundbeck or Longboard at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the public reference room. Longboard’s filings with the SEC are also available to the public from commercial document-retrieval services and at the website maintained by the SEC at http://www.sec.gov.

Safe Harbor/Forward-Looking Statements

This corporate release contains forward-looking statements that provide our expectations or forecasts of future events such as new product introductions, product approvals and financial performance. Forward looking statements include, without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and may contain words like “believe”, “anticipate”, “expect”, “estimate”, “intend”, “plan”, “project”, “will be”, “will continue”, “will result”, “could”, “may”, “might”, or any variations of such words or other words with similar meanings. All statements other than statements of historical facts included in this corporate release, including, without limitation, those regarding Lundbeck and Longboard’s financial position, business strategy, plans and objectives of management for future operations (including development plans and objectives relating to Lundbeck and Longboard’s products), are forward looking statements.

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Such forward looking statements involve known and unknown risks, uncertainties and other factors which may cause Lundbeck and Longboard’s actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by such forward looking statements. Factors that may affect future results include, among others, interest rate and currency exchange rate fluctuations; delay or failure of development projects, production or distribution problems; unexpected contract breaches or terminations; government-mandated or market-driven price decreases for Lundbeck’s products; introduction of competing products; Lundbeck’s ability to successfully market both new and existing products; exposure to product liability and other lawsuits; changes in reimbursement rules and governmental laws and related interpretation thereof; and unexpected growth in costs and expenses. Additional risks and uncertainties include, but are not limited to, risks related to Lundbeck’s ability to complete the transaction on the proposed terms and schedule; whether the tender offer conditions will be satisfied; whether sufficient stockholders of Longboard tender their shares in the transaction; the outcome of legal proceedings that may be instituted against Longboard and/or others relating to the transaction; the failure to receive (or delay in receiving) the required regulatory approvals relating to the transaction; the possibility that competing offers will be made; risks associated with acquisitions, such as the risk that the businesses will not be integrated successfully, that such integration may be more difficult, time-consuming or costly than expected or that the expected benefits of the transaction will not occur; risks related to future opportunities and plans for Longboard and its products, including uncertainty of the expected financial performance of Longboard and its products; disruption from the proposed transaction, making it more difficult to conduct business as usual or maintain relationships with customers, employees or suppliers; the occurrence of any event, change or other circumstance that could give rise to the termination of the acquisition agreement; and other uncertainties pertaining to the business of Longboard, including those detailed in Longboard’s public filings with the SEC from time to time, including Longboard’s most recent Annual Report on Form 10-K for the year ended December 31, 2023 and its subsequent Quarterly Reports on Form 10-Q. The reader is cautioned not to unduly rely on these forward-looking statements. The forward-looking statements in this corporate release and any oral presentations speak only as at the date of this corporate release. Longboard and Lundbeck disclaim any intent or obligation to update or revise these forward-looking statements, or to confirm such statements to reflect subsequent events or circumstances after the date of the corporate release or in relation to actual results, other than as may be required under applicable law or applicable stock exchange regulations.

Certain assumptions made by Lundbeck are required by Danish Securities Law for full disclosure of material corporate information. Some assumptions, including assumptions relating to sales associated with products that are prescribed for unapproved uses, are made considering past performances of other similar drugs for similar disease states or past performance of the same drug in other regions where the product is currently marketed. It is important to note that although physicians may, as part of their freedom to practice medicine in the US, prescribe approved drugs for any use they deem appropriate, including unapproved uses, at Lundbeck, promotion of unapproved uses is strictly prohibited.

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