0001209191-23-035128.txt : 20230607
0001209191-23-035128.hdr.sgml : 20230607
20230607165121
ACCESSION NUMBER: 0001209191-23-035128
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20230605
FILED AS OF DATE: 20230607
DATE AS OF CHANGE: 20230607
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Blackman Samuel C.
CENTRAL INDEX KEY: 0001863676
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 001-40431
FILM NUMBER: 23999617
MAIL ADDRESS:
STREET 1: 395 OYSTER POINT BLVD.
STREET 2: SUITE 217
CITY: SOUTH SAN FRANCISCO
STATE: CA
ZIP: 94080
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: 94005
BUSINESS PHONE: 650 484-0899
MAIL ADDRESS:
STREET 1: 2000 SIERRA POINT PARKWAY, SUITE 501
CITY: BRISBANE
STATE: CA
ZIP: 94005
FORMER COMPANY:
FORMER CONFORMED NAME: Day One Biopharmaceuticals Holding Co LLC
DATE OF NAME CHANGE: 20210209
4
1
doc4.xml
FORM 4 SUBMISSION
X0407
4
2023-06-05
0
0001845337
Day One Biopharmaceuticals, Inc.
DAWN
0001863676
Blackman Samuel C.
2000 SIERRA POINT PARKWAY, SUITE 501
BRISBANE
CA
94005
0
1
0
0
Chief Medical Officer
0
Common Stock
2023-06-05
4
S
0
1229
16.00
D
1234363
D
Common Stock
1000000
I
By the 2021 Blackman Family LLC
The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2022.
The Reporting Person is the sole manager, and has shared voting and dispositive power with his wife as members. The Reporting Person continues to report beneficial ownership of all of the Issuer's Common Stock held by the 2021 Blackman Family LLC but disclaims beneficial ownership except to the extent of his and his wife's pecuniary interest therein.
/s/ Charles N. York II, as Attorney-in-Fact
2023-06-07