WHWK · NASDAQ · Biotechnology

Whitehawk Therapeutics (WHWK)

Develops in-licensed antibody-drug conjugates for cancer treatment.

$3.82
After hours−0.02 (−0.39%)
At close$3.84(−5.07%)

13F · 13D/G · Form 4

Insiders2.89%1.65M shares
5 holders · as of May 18, 2026
Strategic holders8.29%4.73M shares
1 holder · as of Mar 11, 2025
Other88.82%50.64M shares
remainder

57.01M company shares as of Aug 21, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Suvretta Capital Management, LLCStrategic
8.29%4.73Mfiled Mar 11, 2025
OrbiMed Advisors LLCInstitution
7.31%4.17Mfiled May 15, 2025
Coastlands Capital LPInstitution
4.95%2.82Mfiled Aug 25, 2025
David James LennonInsiderdirector, officer: CHIEF EXECUTIVE OFFICER
1.00%569,643filed May 18, 2026
Bryan BallInsiderofficer: See remarks
0.79%448,126filed May 18, 2026
Scott M. GiacobelloInsiderofficer: CHIEF FINANCIAL OFFICER
0.58%333,489filed May 18, 2026
Caley CasteleinInsiderdirector
0.48%274,796filed May 18, 2026
Margaret DuganInsiderofficer: Chief Medical Officer
0.03%19,132filed May 18, 2026
Anupam Dalal1Insiderdirector
0.00%0filed Jul 30, 2026
QVT Financial LPInstitution
9.37% of class, as filedfiled Feb 14, 2025
  1. Anupam Dalal reports a block also reported by Suvretta Capital Management, LLC; it is counted once, under Suvretta Capital Management, LLC.

13F

No 13F holders on record.

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Suvretta Capital Management, LLC9.99%4.73M13GMar 11, 2025
QVT Financial LP9.37%2.31M13GFeb 14, 2025
OrbiMed Advisors LLC8.90%4.17M13GMay 15, 2025
Coastlands Capital LP5.98%2.82M13GAug 25, 2025

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Apr 16, 2026
Scott M. Giacobelloofficer: CHIEF FINANCIAL OFFICER
Sale141,600$4.13295,224
Apr 15, 2026
Scott M. Giacobelloofficer: CHIEF FINANCIAL OFFICER
Sale77,000$3.86436,824
Apr 14, 2026
Bryan Ballofficer: See remarks
Sale92,460$3.64397,106
Apr 13, 2026
Bryan Ballofficer: See remarks
Sale26,389$3.46489,566
Apr 10, 2026
Bryan Ballofficer: See remarks
Sale6,596$3.43515,955
Apr 9, 2026
Bryan Ballofficer: See remarks
Sale50,000$3.57522,551
Apr 9, 2026
David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER
Sale14,500$3.38518,622
Apr 8, 2026
David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER
Sale63,945$3.40533,122
Apr 7, 2026
David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER
Sale94,087$3.43597,067
Apr 6, 2026
David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER
Sale102,395$3.51691,154

House and Senate disclosures

Not reported.