0001962918-24-000010.txt : 20240111 0001962918-24-000010.hdr.sgml : 20240111 20240111183824 ACCESSION NUMBER: 0001962918-24-000010 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240109 FILED AS OF DATE: 20240111 DATE AS OF CHANGE: 20240111 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Oyston Ronald CENTRAL INDEX KEY: 0001973851 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41696 FILM NUMBER: 24530242 MAIL ADDRESS: STREET 1: C/O ACELYRIN, INC. STREET 2: 4149 LIBERTY CANYON ROAD CITY: AGOURA HILLS STATE: CA ZIP: 91301 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ACELYRIN, Inc. CENTRAL INDEX KEY: 0001962918 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 852406735 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 4149 LIBERTY CANYON RD. CITY: AGOURA HILLS STATE: CA ZIP: 91301 BUSINESS PHONE: 805-871-4300 MAIL ADDRESS: STREET 1: 4149 LIBERTY CANYON RD. CITY: AGOURA HILLS STATE: CA ZIP: 91301 4 1 wk-form4_1705016295.xml FORM 4 X0508 4 2024-01-09 0 0001962918 ACELYRIN, Inc. SLRN 0001973851 Oyston Ronald C/O ACELYRIN, INC. 4149 LIBERTY CANYON RD. AGOURA HILLS CA 91301 0 1 0 0 Chief People Officer 0 Employee Stock Option (right to buy) 7.68 2024-01-09 4 A 0 123574 0 A 2034-01-08 Common Stock 123574 123574 D 1/4 of the shares subject to the option vest on January 9, 2025, and 1/48 of the shares subject to the option vest in equal monthly installments thereafter, subject to the Reporting Person's continued service. /s/ Mina Kim, Attorney-in-fact 2024-01-11