Dugan Margaret

SEC source: 0001909734-26-000011 · form4a-09182026_080933.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,250

Underlying: Common Stock · 81,250 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. Common Stock.

F3 · derivative.exercise_date: 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.

F3 · derivative.expiration_date: 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.

SEC source: 0001909734-26-000011 · form4a-09182026_080933.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,250

Underlying: Common Stock · 81,250 shares

Expires 2036-09-15

F1 · derivative.exercise_date: 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.

SEC source: 0001909734-26-000009 · form4-09152026_110928.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,250

Underlying: Common Stock · 81,250 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. Common Stock.

F3 · derivative.exercise_date: 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.

F3 · derivative.expiration_date: 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.

SEC source: 0001909734-26-000009 · form4-09152026_110928.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,250

Underlying: Common Stock · 81,250 shares

Expires 2036-09-15

F1 · derivative.exercise_date: 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.

SEC source: 0001909734-26-000007 · wk-form4_1781560245.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,164

F1 · security: Represents securities underlying restricted share units. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless there is a triggering event of accelerated vesting pursuant to the Company's Independent Non-Executive Director Compensation Policy.

SEC source: 0001909734-26-000006 · wk-form4_1779917210.xml · nonDerivative · entry 2

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · security: Each American Depositary Share represents 13 Ordinary Shares.

F2 · kind: The sale was effected pursuant to a mandatory tax withholding provision in the Reporting Person's restricted share unit award agreement in connection with the vesting of a restricted share unit award previously granted to the Reporting Person. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events.

SEC source: 0001909734-26-000005 · form4-05182026_080531.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,132

SEC source: 0001909734-26-000003 · form4-04032026_100421.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 283,157

Underlying: Common Stock · 283,157 shares

Expires 2036-04-01

F1 · derivative.exercise_date: 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 April 1, 2026.

SEC source: 0001909734-25-000006 · form4-12022025_091222.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,309

Underlying: Common Stock · 55,309 shares

Expires not disclosed

F2 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of Whitehawk Therapeutics, Inc. Common Stock.

F3 · derivative.exercise_date: Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2021 Equity Incentive Plan) through such 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 December 1, 2025.

F3 · derivative.expiration_date: Subject to the Reporting Person continuing to be a Service Provider (as defined in the Issuer's 2021 Equity Incentive Plan) through such 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 December 1, 2025.

SEC source: 0001909734-25-000006 · form4-12022025_091222.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 650,000

Underlying: Common Stock · 650,000 shares

Expires 2035-12-01

F1 · derivative.exercise_date: 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 one forty-eighth (1/48th) of the total shares subject to the option shall vest each month thereafter on the same day as the Vesting Commencement Date (and if there is no corresponding day, on the last day of the month) such that all shares of common stock subject to the option shall be fully vested on the four year anniversary of the Vesting Commencement Date. "Vesting Commencement Date" shall mean December 1, 2025.

SEC source: 0001628280-25-045361 · wk-form4_1760732891.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,574

F1 · kind: This sale was effected pursuant to a durable automatic sale instruction under Rule 10b5-1 adopted by the reporting person on November 13, 2023, and represents a broker-assisted sale of shares to satisfy the payment of withholding tax liability incurred upon the vesting of restricted stock units ("RSUs"). The sale does not represent a discretionary trade by the reporting person.

F2 · balance_after: Includes 20,000 unvested RSUs.

SEC source: 0001651308-25-000087 · wk-form4_1747957441.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,750

Underlying: Ordinary Shares · 22,750 shares

Expires 2035-05-20

F2 · derivative.exercise_price: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F3 · derivative.exercise_date: The option shall become exercisable in full upon the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the Reporting Person resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The option was granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-25-000087 · wk-form4_1747957441.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,940

F1 · security: Represents securities underlying restricted share units. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The restricted share units were granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001490978-25-000019 · wk-form4_1741127266.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires 2035-03-03

F3 · derivative.exercise_date: The option was granted on March 3, 2025. The shares underlying the option are scheduled to vest with respect to 25% of the shares on March 3, 2026 and the remainder are scheduled to vest in equal monthly installments through March 3, 2029.

SEC source: 0001490978-25-000019 · wk-form4_1741127266.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,969

F1 · security: Grant of restricted stock units ("RSUs") under the Issuer's 2022 Equity Incentive Plan, as amended. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The RSUs were granted on March 3, 2025 and will vest in equal installments on each of March 4, 2026, 2027, 2028 and 2029, subject to the Reporting Person's continued service with the company.

F2 · balance_after: Includes 23,750 unvested RSUs.

SEC source: 0001490978-24-000080 · wk-form4_1729113841.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,469

F1 · kind: This sale was effected pursuant to a durable automatic sale instruction under Rule 10b5-1 adopted by the reporting person on November 13, 2023, and represents a broker-assisted sale of shares to satisfy the payment of withholding tax liability incurred upon the vesting of restricted stock units ("RSUs"). The sale does not represent a discretionary trade by the reporting person.

F2 · balance_after: Includes 11,250 unvested RSUs.

SEC source: 0001651308-24-000065 · wk-form4_1717794139.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,151

Underlying: Ordinary Shares · 34,151 shares

Expires 2034-06-04

F2 · derivative.exercise_price: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F2 · shares: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F3 · derivative.exercise_date: The option shall become exercisable in full upon the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the Reporting Person resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The option was granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-24-000065 · wk-form4_1717794139.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,955

F1 · security: Represents securities underlying restricted share units. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The restricted share units were granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001628280-24-008955 · wk-form4_1709674967.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-03-04

F1 · derivative.exercise_date: The option was granted on March 4, 2024. The shares underlying the option are scheduled to vest with respect to 25% of the shares on March 4, 2025 and the remainder are scheduled to vest in equal monthly installments through March 4, 2028.

SEC source: 0001490978-23-000099 · wk-form4_1691699891.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,000

Underlying: Common Stock · 90,000 shares

Expires 2033-08-09

F3 · derivative.exercise_date: The option was granted on August 9, 2023 under the Issuer's 2021 Inducement Equity Incentive Plan. The shares underlying the option are scheduled to vest with respect to 25% of the shares on July 31, 2024 and the remainder are scheduled to vest in equal monthly installments through July 31, 2027.

SEC source: 0001490978-23-000099 · wk-form4_1691699891.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,000

F1 · security: Grant of restricted stock units ("RSUs") under the Issuer's 2021 Inducement Equity Incentive Plan. Each RSU represents a contingent right to receive one share of common stock of the Issuer. The RSUs were granted on August 9, 2023 and will vest in equal installments on each of October 15, 2024, 2025, 2026 and 2027, subject to the Reporting Person's continued service with the company.

F2 · balance_after: Includes 15,000 unvested RSUs.

SEC source: 0001651308-23-000094 · wf-form4_168730179559441.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,975

Underlying: Ordinary Shares · 26,975 shares

Expires 2033-06-14

F2 · derivative.exercise_price: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F2 · shares: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F3 · derivative.exercise_date: The option shall become exercisable in full upon the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the Reporting Person resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The option was granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-23-000094 · wf-form4_168730179559441.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,614

F1 · security: Represents securities underlying restricted share units. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The restricted share units were granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-22-000110 · wf-form4_165610674812871.xml · derivative · entry 2

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,645

Underlying: Ordinary Shares · 34,645 shares

Expires 2032-06-21

F2 · derivative.exercise_price: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F2 · shares: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F3 · derivative.exercise_date: The option shall become exercisable in full upon the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the Reporting Person resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The option was granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-22-000110 · wf-form4_165610674812871.xml · nonDerivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,692

F1 · security: Represents securities underlying restricted share units. The restricted share units shall become fully vested on the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the director resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The restricted share unites were granted under the Company's Independent Director Compensation Policy, as amended.

SEC source: 0001651308-22-000033 · wf-form4_164625883815347.xml · derivative · entry 1

Dugan Margaret · CIK 0001909734 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,581

Underlying: Ordinary Shares · 22,581 shares

Expires 2032-02-27

F1 · derivative.exercise_price: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F1 · shares: The number of securities underlying each option and the exercise price therefor are represented in ordinary shares. Each American Depositary Share represents 13 ordinary shares.

F2 · derivative.exercise_date: The option shall become exercisable in full upon the earlier to occur of the first anniversary of the grant date or the date of the next annual general meeting; provided, however, that all vesting shall cease if the Reporting Person resigns from the board of directors or otherwise ceases to serve as a director, unless the board determines otherwise. Unvested securities are subject to accelerated vesting upon a change in control or certain termination events. The option was granted under the Company's Independent Director Compensation Policy, as amended.