0001209191-22-057645.txt : 20221117 0001209191-22-057645.hdr.sgml : 20221117 20221117174900 ACCESSION NUMBER: 0001209191-22-057645 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20221115 FILED AS OF DATE: 20221117 DATE AS OF CHANGE: 20221117 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: York Charles N II CENTRAL INDEX KEY: 0001655962 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40431 FILM NUMBER: 221399866 MAIL ADDRESS: STREET 1: 901 S. MOPAC EXPRESSWAY STREET 2: BARTON OAKS PLAZA ONE, SUITE 250 CITY: AUSTIN STATE: TX ZIP: 78746 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Day One Biopharmaceuticals, Inc. CENTRAL INDEX KEY: 0001845337 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 832415215 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2000 SIERRA POINT PARKWAY, SUITE 501 CITY: BRISBANE STATE: CA ZIP: 94080-1930 BUSINESS PHONE: 650 484-0899 MAIL ADDRESS: STREET 1: 2000 SIERRA POINT PARKWAY, SUITE 501 CITY: BRISBANE STATE: CA ZIP: 94080-1930 FORMER COMPANY: FORMER CONFORMED NAME: Day One Biopharmaceuticals Holding Co LLC DATE OF NAME CHANGE: 20210209 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2022-11-15 0 0001845337 Day One Biopharmaceuticals, Inc. DAWN 0001655962 York Charles N II 2000 SIERRA POINT PARKWAY, SUITE 501 BRISBANE CA 94080 0 1 0 0 COO, CFO and Secretary Common Stock 2022-11-15 4 M 0 1375 A 295776 D Common Stock 2022-11-16 4 S 0 430 21.4598 D 296497 D Restricted Stock Units 2022-11-15 4 M 0 1375 0.00 D Common Stock 1375 16500 D Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock upon settlement for no consideration. The sale of shares is for the sole purpose of covering the Reporting Person's tax liability with respect to the settlement of RSUs. Includes 1,151 shares of Common Stock acquired under the Issuer's employee stock purchase plan on November 16, 2022. The RSUs will vest as to 1/12 of the total award in quarterly installments on February 15th, May 15th, August 15th, and November 15th, subject to the Reporting Person's continued service to the Issuer on each vesting date. /s/ Charles N. York II 2022-11-17