UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_____________________

FORM 8-K

_____________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 7, 2024

_____________________

ACELYRIN, INC.

(Exact name of registrant as specified in its charter)

_____________________

Delaware	001-41696	85-2406735
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

4149 Liberty Canyon Road	91301
Agoura Hills, California
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (805) 730-0360

N/A

(Former name or former address, if changed since last report.)

_____________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.00001 par value per share	SLRN	Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company x

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. o

Item 5.07 Submission of Matters to a Vote of Security Holders.

On June 7, 2024, ACELYRIN, INC. (the “Company”) held its 2024 Annual Meeting of Stockholders (the “Annual Meeting”). As of April 8, 2024, the record date for the Annual Meeting, 98,912,904 shares of common stock were outstanding and entitled to vote at the Annual Meeting. A summary of the matters voted upon by stockholders at the Annual Meeting is set forth below.

Proposal 1. Election of Directors

The Company’s stockholders elected the three persons listed below as Class I Directors, each to serve on the Company’s Board of Directors (the “Board”) until the Company’s 2027 Annual Meeting of Stockholders and until their respective successors are duly elected and qualified. The final voting results are as follows:

	Votes For	Votes Withheld	Broker Non-Votes
Alan Colowick, M.D., M.P.H.	48,941,992	22,364,657	20,119,151
Patrick Machado, J.D.	46,542,856	24,763,793	20,119,151
Beth Seidenberg, M.D.	50,160,628	21,146,021	20,119,151

Proposal 2. Ratification of the Selection of Independent Registered Public Accounting Firm

The Company’s stockholders ratified the selection by the Board's Audit Committee of PricewaterhouseCoopers LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2024. The final voting results are as follows:

Votes For	Votes Against	Abstentions	Broker Non-Votes
91,387,204	20,476	18,120	—

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 hereunto duly authorized.

	ACELYRIN, INC.
Dated: June 11, 2024	By:	/s/ Gil M. Labrucherie
		Gil M. Labrucherie
		Chief Financial Officer and Chief Business Officer