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$DAWN All transactions

Day One Biopharmaceuticals, Inc.

A

$ Value

$0

Shares

15,000

Price

$0

Filed

Jun 4

Insider

Name

Holles Natalie C.

Title

CIK

0001580111

Roles

Director

Transaction Details

Transaction Date

2025-06-02

Code

A

Table

Derivative

Ownership

Direct

Equity Swap

No

Shares After

15,000

Footnotes

The option vests as to 1/12th of the total grant on each monthly anniversary, beginning on July 2, 2025, subject to the Reporting Person's provision of service to the Issuer on each option vesting date. | 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 RSUs will vest as to 100% of the award on the earlier of (i) June 2, 2026 and (ii) the date of the Issuer's 2026 annual meeting of stockholders (in each case, the "RSU Vesting Date"), subject to the Reporting Person's provision of services to the Issuer on each vesting date. On the RSU Vesting Date, pursuant to the Reporting Person's election, the RSUs will automatically convert into an equal number of deferred stock units, which will be settled for an equal number of shares of the Issuer's Common Stock on the earlier of the calendar year 2030 or the Reporting Person's separation with the Issuer. Notwithstanding the aforementioned deferral period, from and after the RSU Vesting Date, the deferred stock units may settle earlier upon the Reporting Person's death, disability, or separation from service with the Issuer, or upon the occurrence of an "unforeseeable emergency," as that term is defined under the Issuer's deferred compensation plan. | RSUs do not expire; they either vest or are canceled prior to the RSU Vesting Date.

Filing Info

Accession No.

0001415889-25-015620

Form Type

4

Issuer CIK

0001845337

Holles Natalie C.'s History

Date Ticker Type Value
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2026-04-23 DAWN D
2025-11-06 DAWN D $0
2025-11-06 DAWN A $0

Other Insiders at DAWN (90d)

Insider Bought Sold Last
Garland J. Scott 2026-04-23
Ramasastry Saira 2026-04-23
Holles Natalie C. 2026-04-23
Nicholson Garry A 2026-04-23
York Charles N II
COO and CFO
$70K 2026-04-23
Dable Habib J 2026-04-23
Grossman William 2026-04-23
VASCONCELLES MICHAEL
Head of Research and Dev.
$32K 2026-04-23
Dubow Adam
Gen Counsel & Secretary
$74K 2026-04-23
Josey John A. 2026-04-23
Merendino Lauren
Chief Commercial Officer
$67K 2026-04-23
Bender Jeremy
CHIEF EXECUTIVE OFFICER
$179K 2026-04-23