0001415889-24-023318.txt : 20240912 0001415889-24-023318.hdr.sgml : 20240912 20240912182751 ACCESSION NUMBER: 0001415889-24-023318 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240910 FILED AS OF DATE: 20240912 DATE AS OF CHANGE: 20240912 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Patel Kavita CENTRAL INDEX KEY: 0001670683 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-41259 FILM NUMBER: 241295978 MAIL ADDRESS: STREET 1: C/O TESARO, INC. STREET 2: 1000 WINTER STREET, SUITE 3300 CITY: WALTHAM STATE: MA ZIP: 02451 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 form4-09122024_100945.xml X0508 4 2024-09-10 0001786205 Arcellx, Inc. ACLX 0001670683 Patel Kavita C/O ARCELLX, INC. 800 BRIDGE PARKWAY REDWOOD CITY CA 94065 true false false false 1 Common Stock 2024-09-10 4 M 0 1500 6.66 A 1500 D Common Stock 2024-09-10 4 S 0 1500 74.41 D 0 D Stock Option (right to buy) 6.66 2024-09-10 4 M 0 1500 0 D 2031-12-07 Common Stock 1500 63031 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 March 28, 2024. Shares issued pursuant to the Issuer's 2017 Equity Incentive Plan (the "2017 Plan"). Subject to the Reporting Person continuing to be a Service Provider (as defined in the 2017 Plan) through each applicable date, twenty-five percent (25%) of the shares subject to the option shall vest on the one (1) year anniversary of the Vesting Commencement Date, and one forty-eighth (1/48th) of the shares subject to the option shall vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month). "Vesting Commencement Date" shall mean December 1, 2021. /s/ Michelle Gilson, as Attorney-in-Fact 2024-09-12