0001415889-24-008370.txt : 20240318 0001415889-24-008370.hdr.sgml : 20240318 20240318204955 ACCESSION NUMBER: 0001415889-24-008370 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240318 FILED AS OF DATE: 20240318 DATE AS OF CHANGE: 20240318 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Gilson Michelle CENTRAL INDEX KEY: 0001930862 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41259 FILM NUMBER: 24760815 MAIL ADDRESS: STREET 1: 25 WEST WATKINS MILL ROAD, SUITE A CITY: GAITHERSBURG STATE: MD ZIP: 20878 ISSUER: 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 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 4 1 form4-03192024_120347.xml X0508 4 2024-03-18 0001786205 Arcellx, Inc. ACLX 0001930862 Gilson Michelle C/O ARCELLX, INC. 800 BRIDGE PARKWAY REDWOOD CITY CA 94065 false true false false CHIEF FINANCIAL OFFICER 1 Common Stock 2024-03-18 4 S 0 3782 69.0278 D 12528 D Common Stock 2024-03-18 4 S 0 3043 69.7313 D 9485 D The sale of shares reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan entered into by the Reporting Person on December 18, 2023. Represents the weighted average share price of an aggregate total of 3,782 shares sold in the price range of $68.44 to $69.4399 by the Reporting Person. The Reporting Person undertakes to provide upon request by the Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Represents the weighted average share price of an aggregate total of 3,043 shares sold in the price range of $69.50 to $70.4999 by the Reporting Person. The Reporting Person undertakes to provide upon request by the Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares sold at each separate price. /s/ Michelle Gilson 2024-03-18