Whitehawk CMO granted 81,250 options, 81,250 RSUs

Whitehawk Therapeutics’ Chief Medical Officer received new option and RSU grants covering 162,500 shares in total, vesting over four years.

Rhea-AI Filing Summary

Whitehawk Therapeutics, Inc. (symbol: WHWK) is the issuer of record for a Form 4 filing submitted to the SEC. Dugan Margaret reported acquisition or exercise transactions in this Form 4 filing.

Whitehawk Therapeutics, Inc. (WHWK) reported that its Chief Medical Officer, Margaret Dugan, received equity-based compensation on September 15, 2026. She was granted options to purchase shares of common stock and a separate award of restricted stock units, each covering 81,250 shares, with multi-year vesting tied to continued service.

Insider Trade Summary

Grant/Award: 162,500 shares

Grant/Award 2 txns

Insider Dugan Margaret

Role Chief Medical Officer

Type	Security	Shares	Price	Value
Grant/Award	Stock Option (right to buy) F1	81,250	$0.00	$0.00
Grant/Award	Restricted Stock Units F2, F3	81,250	$0.00	$0.00

Holdings After Transaction: Stock Option (right to buy) — 81,250 contracts (Direct); Restricted Stock Units — 81,250 contracts (Direct)

Footnotes (3)

1. 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.
2. F2. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. Common Stock.
3. F3. 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 award shall vest on the one-year anniversary of the Vesting Commencement Date, and twenty five percent (25%) of the shares subject to the award shall vest on each of the next three Vesting Commencement Date anniversaries thereafter. "Vesting Commencement Date" shall mean September 15, 2026.

Key Figures

Stock options granted: 81,250 options Option exercise price: $4.09 per share Option expiration date: September 15, 2036 +4 more

7 metrics

Stock options granted 81,250 options Grant to Chief Medical Officer on September 15, 2026

Option exercise price $4.09 per share Exercise price for 81,250 stock options granted on September 15, 2026

Option expiration date September 15, 2036 Scheduled expiration for the 81,250 stock options

Restricted stock units granted 81,250 RSUs Grant to Chief Medical Officer on September 15, 2026

Option vesting initial tranche 25% of shares Vests on the one-year anniversary of September 15, 2026, subject to continued service

Option monthly vesting fraction 1/48 of total shares Vests each month after the first anniversary until four years from vesting commencement date

RSU annual vesting tranches 4 tranches of 25% each 25% on each anniversary of September 15, 2026, over four years, subject to service

Key Terms

Restricted Stock Units, Equity Incentive Plan, vesting

3 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents a contingent right to receive"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Equity Incentive Plan financial

"as defined in the Issuer's 2021 Equity Incentive Plan) through each applicable date"

An equity incentive plan is a program that gives employees, executives or directors the right to receive company stock or options to buy stock as part of their pay. Think of it as offering slices of future company profit to motivate people to boost long‑term performance; for investors it matters because it can align employee goals with shareholder value but also increases the number of shares outstanding, which can dilute existing ownership.

vesting financial

"twenty five percent (25%) of the shares subject to the option shall vest on the one-year"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What equity awards did WHWK grant to its Chief Medical Officer on September 15, 2026?

Whitehawk Therapeutics granted Chief Medical Officer Margaret Dugan stock options for 81,250 shares of common stock and a separate award of 81,250 restricted stock units, both as equity compensation awards subject to vesting conditions tied to continued service.

What is the exercise price and term of the new stock options reported for WHWK?

The stock options granted to the Chief Medical Officer cover 81,250 shares at an exercise price of $4.09 per share and are scheduled to expire on September 15, 2036, subject to earlier termination under the plan or award terms.

How do the new WHWK stock options vest for the Chief Medical Officer?

The options vest over four years: 25% of the shares vest on the one-year anniversary of the vesting commencement date, and 1/48 of the total shares vest monthly thereafter, so all shares are fully vested on the four-year anniversary, subject to continued service.

What is the vesting schedule for the WHWK restricted stock units granted to the Chief Medical Officer?

The restricted stock units vest in four equal annual installments: 25% of the shares vest on the one-year anniversary of the vesting commencement date, and 25% vest on each of the next three anniversaries, subject to continued service as a service provider.

What does each restricted stock unit represent in the WHWK Form 4?

Each restricted stock unit represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. common stock, meaning 81,250 restricted stock units correspond to a potential 81,250 shares if the vesting conditions are satisfied.

Were the WHWK equity grants made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates that no Rule 10b5-1 trading plan is reported for these equity awards to the Chief Medical Officer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/15/2026 - 07:07 PM Accepted by SEC EDGAR 09/15/2026 - 07:06 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Dugan Margaret

(Last) (First) (Middle)

C/O WHITEHAWK THERAPEUTICS, INC.

2 HEADQUARTERS PLAZA, EAST BUILDING, 11T

(Street)

MORRISTOWN NEW JERSEY 07960

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Whitehawk Therapeutics, Inc. [ WHWK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Medical Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$4.09	09/15/2026		A		81,250		(1)	09/15/2036	Common Stock	81,250	$0	81,250	D
Restricted Stock Units	(2)	09/15/2026		A		81,250		(3)	(3)	Common Stock	81,250	$0	81,250	D

Explanation of Responses:

1. 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.

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

3. 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 award shall vest on the one-year anniversary of the Vesting Commencement Date, and twenty five percent (25%) of the shares subject to the award shall vest on each of the next three Vesting Commencement Date anniversaries thereafter. "Vesting Commencement Date" shall mean September 15, 2026.

	/s/ Stephen Rodin, as Attorney-in-Fact	09/15/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)