CELL PhenomeX Inc

As filed with the Securities and Exchange Commission on October 2, 2023

Registration No. 333-258704

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

POST-EFFECTIVE AMENDMENT NO. 1

TO

FORM S-3

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

BRUKER CELLULAR ANALYSIS, INC.

(Exact name of registrant as specified in its charter)

5858 Horton Street, Suite 320

Emeryville, California 94608

(510) 858-2855

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

J. Brent Alldredge

Secretary

Bruker Cellular Analysis, Inc.

40 Manning Road

Billerica, MA 01821

(Name and address of agent for service)

(978) 663-3660

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Laurie A. Cerveny

Robert W. Dickey

Bryan S. Keighery

Morgan, Lewis & Bockius LLP

One Federal Street

Boston, Massachusetts 02110

Telephone: (617) 341-7700

Fax: (617) 341-7701

Approximate date of commencement of proposed sale to the public: Not applicable.

If the only securities being registered on this Form are being offered pursuant to dividend or interest reinvestment plans, please check the following box: ☐

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, other than securities offered only in connection with dividend or interest reinvestment plans, check the following box: ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☐

If this Form is a registration statement pursuant to General Instruction I.D. or a post-effective amendment thereto that shall become effective upon filing with the Commission pursuant to Rule 462(e) under the Securities Act, check the following box. ☒

If this Form is a post-effective amendment to a registration statement filed pursuant to General Instruction I.D. filed to register additional securities or additional classes of securities pursuant to Rule 413(b) under the Securities Act, check the following box. ☐

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.

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 7(a)(2)(B) of the Securities Act. ☐

DEREGISTRATION OF SECURITIES

This Post-Effective Amendment No. 1 (this “Post-Effective Amendment”) relates to the Registration Statement on Form S-3ASR (File No. 333-258704) (the “Registration Statement”) filed by Bruker Cellular Analysis, Inc. (the “Registrant”) with the U.S. Securities and Exchange Commission (the “Commission”) on August 11, 2021, registering an indeterminate number of shares of the Registrant’s common stock, par value $0.00005, preferred stock, par value $0.00005, debt securities, depositary shares, warrants, purchase contracts and/or units.

On October 2, 2023, pursuant to the Agreement and Plan of Merger (the “Merger Agreement”), dated as of August 17, 2023, among the Registrant, Bruker Corporation, a Delaware corporation (“Parent”), and Bird Mergersub Corporation, a Delaware corporation and a wholly owned subsidiary of Parent (“Purchaser”), Purchaser was merged with and into the Registrant (the “Merger”), with the Registrant continuing as the surviving corporation and a wholly owned subsidiary of Parent. As a result of the transactions contemplated by the Merger Agreement, the Registrant has terminated any and all offerings and sales of securities pursuant to the Registration Statement. In accordance with an undertaking made by the Registrant in the Registration Statement to remove from registration, by means of a post-effective amendment, any of the securities of the Registrant registered under the Registration Statement that remain unsold at the termination of the offering, the Registrant hereby terminates the effectiveness of the Registration Statement and removes from registration all of the securities that remain unsold under the Registration Statement as of the date hereof, if any.

The Registrant is filing this Post-Effective Amendment to withdraw and remove from registration all securities registered pursuant to the Registration Statement that remain unsold as of the date hereof. The Registration Statement is hereby amended, as appropriate, to reflect the deregistration of such securities. After giving effect to this Post-Effective Amendment, there will be no remaining securities registered by the Registrant pursuant to the Registration Statement.

The foregoing description of the Merger, the Merger Agreement and the transaction contemplated thereby does not purport to be complete and is subject to, and qualified in its entirety by, the Merger Agreement, which is attached as Exhibit 2.1 to the Registrant’s Current Report on Form 8-K filed with the Commission on August 17, 2023.

SIGNATURE

Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3ASR and has duly caused this Post-Effective Amendment to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Billerica, Commonwealth of Massachusetts, on October 2, 2023.

No other person is required to sign this Post-Effective Amendment in reliance upon Rule 478 under the Securities Act of 1933, as amended.