15-12G 1 ef20082445_1512g.htm 15-12G

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 15

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 No. 001-43037

AtaiBeckley Inc.

(Exact name of registrant as specified in its charter)

Eli Lilly and Company Global Headquarters

Lilly Corporate Center

Indianapolis, Indiana 46285

(317) 276-2000

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

Common Stock, par value $0.01 per share

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

None

(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: 1*

* On July 15, 2026, AtaiBeckley Inc., a Delaware corporation (the “Company”), Eli Lilly and Company, an Indiana corporation (“Parent”), and Albali Acquisition Corporation, a Delaware corporation and an indirect wholly owned subsidiary of Parent (“Merger Sub”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). Pursuant to the terms of the Merger Agreement and on September 11, 2026, Merger Sub merged with and into the Company, with the Company surviving as a wholly owned subsidiary of Parent.

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

		AtaiBeckley Inc.

Date:	September 21, 2026	By:	/s/ Jonathan R. Haug
			Jonathan R. Haug
			President