0001950047-24-002652.txt : 20240322 0001950047-24-002652.hdr.sgml : 20240322 20240322162105 ACCESSION NUMBER: 0001950047-24-002652 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240322 DATE AS OF CHANGE: 20240322 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: 24775531 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: Heery Christopher CENTRAL INDEX KEY: 0001789632 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O PRECISION BIOSCIENCES, INC. STREET 2: 302 E. PETTIGREW STREET, SUITE A-100 CITY: DURHAM STATE: NC ZIP: 27701 144 1 primary_doc.xml 144 0001789632 XXXXXXXX LIVE 0001786205 ARCELLX INC 001-41259 800 Bridge Parkway Redwood City CA 94065 2403270603 CHRISTOPHER HEERY Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

70404 5071904.16 52796618 03/22/2024 NASDAQ Common 03/22/2024 Exercise of Stock Options Issuer N 49039 03/22/2024 Cash Common 01/03/2024 Restricted Stock Units Issuer N 8921 01/03/2024 N/A Common 02/07/2024 Restricted Stock Units Issuer N 12444 02/07/2024 N/A N CHRISTOPHER R HEERY

800 Bridge Parkway Redwood City CA 94065

Common 02/08/2024 14000 861840.00 CHRISTOPHER R HEERY

800 Bridge Parkway Redwood City CA 94065

Common 01/04/2024 7598 419941.46 The securities to be sold were and will be received upon the exercise of stock options over the next three months. 03/22/2024 12/22/2023 /s/ Christopher Heery