Form 15-12G - Securities registration termination [Section 12(g)]

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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FORM 15

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CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.

Commission File Number: 000-56600

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Ambrx Biopharma, Inc.

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(Exact name of registrant as specified in its charter)

10975 North Torrey Pines Road

La Jolla, California 92037

(858)-875-2400

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

Common Stock, par value $0.0001 per share

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(Title of each class of securities covered by this Form)

None

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(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

Rule 12g-4(a)(1)	☒
Rule 12g-4(a)(2)	☐
Rule 12h-3(b)(1)(i)	☒
Rule 12h-3(b)(1)(ii)	☐
Rule 15d-6	☐
Rule 15d-22(b)	☐

Approximate number of holders of record as of the certification or notice date:  One (1)

Pursuant to the requirements of the Securities Exchange Act of 1934, Ambrx Biopharma, Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

	Ambrx Biopharma, Inc.
Date: March 18, 2024	By:	/s/ Sonja Nelson
		Name:	Sonja Nelson
		Title:	Chief Financial Officer

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