0001950047-24-002813.txt : 20240401 0001950047-24-002813.hdr.sgml : 20240401 20240401163534 ACCESSION NUMBER: 0001950047-24-002813 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240401 DATE AS OF CHANGE: 20240401 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: 24810030 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: Elghandour Rami CENTRAL INDEX KEY: 0001613689 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 15 BARCELONA CIR CITY: REDWOOD CITY STATE: CA ZIP: 94065 144 1 primary_doc.xml 144 0001613689 XXXXXXXX LIVE 0001786205 ARCELLX INC 001-41259 800 Bridge Parkway Redwood City CA 94065 2403270603 RAMI ELGHANDOUR Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

23086 1605631.30 52796618 04/01/2024 NASDAQ Common 01/03/2024 Restricted Stock Units Issuer N 6006 01/03/2024 N/A Common 02/07/2024 Restricted Stock Units Issuer N 8037 02/07/2024 N/A Common 02/07/2023 Restricted Stock Units Issuer N 9043 02/07/2023 N/A N RAMI ELGHANDOUR

800 Bridge Parkway Redwood City CA 94065

Common 02/08/2024 38065 2410656.45 RAMI ELGHANDOUR

800 Bridge Parkway Redwood City CA 94065

Common 01/04/2024 29073 1606864.71 04/01/2024 12/28/2023 /s/ Rami Elghandour