0001786205-24-000003.txt : 20240104 0001786205-24-000003.hdr.sgml : 20240104 20240104202144 ACCESSION NUMBER: 0001786205-24-000003 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240104 DATE AS OF CHANGE: 20240104 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: 24514180 BUSINESS ADDRESS: STREET 1: 25 WEST WATKINS MILL ROAD STREET 2: SUITE A CITY: GAITHERSBURG STATE: MD ZIP: 20878 BUSINESS PHONE: 240-723-6641 MAIL ADDRESS: STREET 1: 25 WEST WATKINS MILL ROAD STREET 2: SUITE A CITY: GAITHERSBURG STATE: MD ZIP: 20878 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 25 WEST WATKINS MILL ROAD SUITE A GAITHERSBURG MD 20878 240-723-6641 Elghandour Rami Officer Director Common Stock E-TRADE FINANCIAL CORPORATION

3 EDISON DRIVE ALPHARETTA GA 30005

29073 1606803.66 52277773 01/04/2024 NASDAQ Common Stock 01/03/2024 Restricted Stock Units Issuer N 53097 01/03/2024 N/A Y SHARES TO BE SOLD TO COVER WITHHOLDING TAXES UPON VESTING OF RESTRICTED STOCK UNIT AWARDS 01/04/2024 /s/ Rami Elghandour