0001961863-24-000125.txt : 20240321 0001961863-24-000125.hdr.sgml : 20240321 20240321183252 ACCESSION NUMBER: 0001961863-24-000125 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240321 DATE AS OF CHANGE: 20240321 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Arcellx, Inc. CENTRAL INDEX KEY: 0001786205 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 472855917 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-41259 FILM NUMBER: 24772615 BUSINESS ADDRESS: STREET 1: 800 BRIDGE PARKWAY CITY: REDWOOD CITY STATE: CA ZIP: 94065 BUSINESS PHONE: 240-327-0603 MAIL ADDRESS: STREET 1: 800 BRIDGE PARKWAY CITY: REDWOOD CITY STATE: CA ZIP: 94065 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: SR One Co-Invest II, LLC CENTRAL INDEX KEY: 0001867644 ORGANIZATION NAME: IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 BUSINESS ADDRESS: STREET 1: C/O SR ONE CAPITAL MANAGEMENT, LP STREET 2: 985 OLD EAGLE SCHOOL ROAD, SUITE 511 CITY: WAYNE STATE: PA ZIP: 19087 BUSINESS PHONE: 610-567-1000 MAIL ADDRESS: STREET 1: C/O SR ONE CAPITAL MANAGEMENT, LP STREET 2: 985 OLD EAGLE SCHOOL ROAD, SUITE 511 CITY: WAYNE STATE: PA ZIP: 19087 144 1 primary_doc.xml 144 0001867644 XXXXXXXX LIVE 0001786205 Arcellx, Inc. 001-41259 800 BRIDGE PARKWAY REDWOOD CITY CA 94065 240-327-0603 SR One Co-Invest II, LLC Shareholder Common Merrill Lynch

555 California Street, Suite 1800 San Francisco CA 94104

295737 21733712.13 52796618 03/21/2024 NASDAQ Common 02/08/2022 Initial Public Offering ISSUER N 295737 02/08/2022 CASH Y 03/21/2024 James Macadam