0001950047-24-002364.txt : 20240315 0001950047-24-002364.hdr.sgml : 20240315 20240315162329 ACCESSION NUMBER: 0001950047-24-002364 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240315 DATE AS OF CHANGE: 20240315 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: 24755143 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: Ware Olivia C CENTRAL INDEX KEY: 0001663771 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 11726 SAN VICENTE BLVD STREET 2: SUITE 650 CITY: LOS ANGELES STATE: CA ZIP: 90049 144 1 primary_doc.xml 144 0001663771 XXXXXXXX LIVE 0001786205 ARCELLX INC 001-41259 25 WEST WATKINS MILL ROAD, SUITE A GAITHERSBURG MD 20878 2403270603 OLIVIA WARE Director COMMON Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

18402 1280227.14 52796618 03/15/2024 NASDAQ Common 03/15/2024 Exercise of Stock Options Issuer N 18402 03/15/2024 Cash Y The securities to be sold were and will be received upon the exercise of stock options over the next three months. 03/15/2024 12/15/2023 /s/ Olivia Ware