0001950047-24-005041.txt : 20240626 0001950047-24-005041.hdr.sgml : 20240626 20240626161844 ACCESSION NUMBER: 0001950047-24-005041 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240626 DATE AS OF CHANGE: 20240626 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: 241073664 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: Gilson Michelle CENTRAL INDEX KEY: 0001930862 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 25 WEST WATKINS MILL ROAD, SUITE A CITY: GAITHERSBURG STATE: MD ZIP: 20878 144 1 primary_doc.xml 144 0001930862 XXXXXXXX LIVE 0001786205 ARCELLX INC 001-41259 800 Bridge Parkway Redwood City CA 94065 2403270603 MICHELLE GILSON Officer COMMON Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

12877 692653.83 53502572 06/26/2024 NASDAQ Common 05/23/2023 Restricted Stock Units Issuer N 7724 05/23/2023 N/A Common 05/23/2024 Restricted Stock Units Issuer N 5153 05/23/2024 N/A N MICHELLE GILSON

800 Bridge Parkway Redwood City CA 94065

Common 05/24/2024 12121 614655.91 06/26/2024 03/27/2024 /s/ Michelle Gilson