Jeremy Bender - 25 Nov 2025 Form 4 Insider Report for Day One Biopharmaceuticals, Inc. (DAWN)

Role
CHIEF EXECUTIVE OFFICER, Director
Signature
/s/ Charles N. York II, Attorney-in-Fact
Issuer symbol
DAWN
Transactions as of
25 Nov 2025
Transactions value $
$0
Form type
4
Filing time
26 Nov 2025, 16:10:24 UTC
Previous filing
18 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Bender Jeremy CHIEF EXECUTIVE OFFICER, Director 1800 SIERRA POINT PARKWAY, SUITE 200, BRISBANE /s/ Charles N. York II, Attorney-in-Fact 26 Nov 2025 0001863107

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DAWN Common Stock Gift $0 -300,000 -21% $0 1,108,285 25 Nov 2025 By Bender Revocable Trust F1
transaction DAWN Common Stock Gift $0 +300,000 $0 300,000 25 Nov 2025 See footnote F2
transaction DAWN Common Stock Gift $0 -300,000 -27% $0 808,285 25 Nov 2025 By Bender Revocable Trust F1
transaction DAWN Common Stock Gift $0 +300,000 $0 300,000 25 Nov 2025 See footnote F3
transaction DAWN Common Stock Gift $0 -7,225 -50% $0 7,225 25 Nov 2025 See footnote F4
transaction DAWN Common Stock Gift $0 -7,225 -100% $0 0 25 Nov 2025 See footnote F4
holding DAWN Common Stock 177,165 25 Nov 2025 Direct
holding DAWN Common Stock 20,204 25 Nov 2025 See footnote F5
holding DAWN Common Stock 147,702 25 Nov 2025 See footnote F6
holding DAWN Common Stock 18,197 25 Nov 2025 See footnote F7
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares held by the Bender Revocable Trust dated January 18, 2017.
F2 Represents shares held by the Jeremy Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person is trustee.
F3 Represents shares held by the Melissa Bender 2025 Grantor Retained Annuity Trust of which the Reporting Person's spouse is trustee.
F4 Represents shares held by the Jeremy Bender 2022 Grantor Retained Annuity Trust of which the Reporting Person is trustee.
F5 Represents shares held by The Jeremy Bender 2023 Grantor Retained Annuity Trust of which the Reporting Person is trustee.
F6 Represents shares held by The Melissa Bender 2022 Grantor Retained Annuity Trust of which the Reporting Person's spouse is trustee.
F7 Represents shares held by The Melissa Bender 2023 Grantor Retained Annuity Trust of which the Reporting Person's spouse is trustee.