Scott M. Giacobello - 15 Sep 2026 Form 4/A - Amendment Insider Report for Whitehawk Therapeutics, Inc. (WHWK)

Reporting relationship: CHIEF FINANCIAL OFFICER
Issuer ticker: WHWK
Reported as of: 15 Sep 2026
Net transaction value: $0
SEC form: 4/A - Amendment
Accepted by SEC: 18 Sep 2026, 16:45:01 UTC
Original report date: 15 Sep 2026
Prior SEC filing: 18 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Stephen Rodin, as Attorney-in-Fact

Key filing fact

Scott M. Giacobello filed Form 4/A - Amendment for Whitehawk Therapeutics, Inc. (WHWK) on 18 Sep 2026.

Key facts

This page summarizes Scott M. Giacobello's Form 4/A - Amendment filing for Whitehawk Therapeutics, Inc. (WHWK).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 18 Sep 2026, 16:45.

Change

Previous filing in this sequence was filed on 18 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (1)

CIK 0001754154 Primary reporting owner

Giacobello Scott M.

Relationship: CHIEF FINANCIAL OFFICER
Address: C/O WHITEHAWK THERAPEUTICS, INC., 2 HEADQUARTERS PLAZA, EAST BUILDING, 11T, MORRISTOWN
Signature: /s/ Stephen Rodin, as Attorney-in-Fact
Signature date: 18 Sep 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

WHWK transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +118,476
Change %
Price: $0.000000^*
Shares after: 118,476
Date: 15 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 118,476
Exercise price: $4.09
Footnotes: F1

WHWK transaction Derivative

Restricted Stock Units

Award

Transaction value
Shares: +118,476
Change %
Price: $0.000000^*
Shares after: 118,476
Date: 15 Sep 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 118,476
Exercise price
Footnotes: F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2021 Equity Incentive Plan) through each applicable date, twenty five percent (25%) of the shares subject to the option shall vest on the one-year anniversary of the Vesting Commencement Date and 1/48th of the total shares subject to the option shall vest every month thereafter such that all shares subject to the option shall be fully vested on the four-year anniversary of the Vesting Commencement Date. "Vesting Commencement Date" shall mean September 15, 2026.

Footnote F2

Each restricted stock unit ("RSU") represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. Common Stock.

Footnote F3

The original Form 4 filed by the Reporting Person erroneously reflected an incorrect vesting schedule. Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2021 Equity Incentive Plan) through the applicable date, one hundred percent (100%) of the shares subject to the award shall vest on the one-year anniversary of the Vesting Commencement Date. "Vesting Commencement Date" shall mean September 15, 2026.