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WHWK · NASDAQ · Biotechnology

Whitehawk Therapeutics (WHWK)

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

$4.64

Pre-market−0.08 (−1.59%)

At close$4.72(+1.84%)

Watchlist

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Breakdown13F · 13D/G · Form 4

	Insiders5 holders · as of May 18, 2026	—	1.65M shares
	Strategic holders1 holder · as of Mar 11, 2025	—	4.73M shares

No reliable share count is available for this listing, so stakes are shown as shares, not percentages.

Top shareholders13F · 13D/G · Form 4

Holder	Stake	Shares	Evidence
Suvretta Capital Management, LLCStrategic	—	4.73M	13Gfiled Mar 11, 2025 ↗
OrbiMed Advisors LLCInstitution	—	4.17M	13Gfiled May 15, 2025 ↗
Coastlands Capital LPInstitution	—	2.82M	13Gfiled Aug 25, 2025 ↗
David James LennonInsiderdirector, officer: CHIEF EXECUTIVE OFFICER	—	569,643	Form 4filed May 18, 2026 ↗
Bryan BallInsiderofficer: See remarks	—	448,126	Form 4filed May 18, 2026 ↗
Scott M. GiacobelloInsiderofficer: CHIEF FINANCIAL OFFICER	—	333,489	Form 4filed May 18, 2026 ↗
Caley CasteleinInsiderdirector	—	274,796	Form 4filed May 18, 2026 ↗
Margaret DuganInsiderofficer: Chief Medical Officer	—	19,132	Form 4filed May 18, 2026 ↗
Anupam Dalal¹Insiderdirector	—	0	Form 4filed Jul 30, 2026 ↗
QVT Financial LPInstitution	—9.37% of class, as filed	—	13Gfiled Feb 14, 2025 ↗

Anupam Dalal reports a block also reported by Suvretta Capital Management, LLC; it is counted once, under Suvretta Capital Management, LLC.

13D/13G — an ownership statement filed at 5% or more · Form 4 — an insider's transaction report

Institutions13F

No 13F holders on record.

Ownership statements13D/G · 5% or more, as filed

Holder	% of class	Shares	Form	Filed
Suvretta Capital Management, LLC	9.99%	4.73M	13G	Mar 11, 2025 ↗
QVT Financial LP	9.37%	2.31M	13G	Feb 14, 2025 ↗
OrbiMed Advisors LLC	8.90%	4.17M	13G	May 15, 2025 ↗
Coastlands Capital LP	5.98%	2.82M	13G	Aug 25, 2025 ↗

Insider tradesForm 4

Latest trades

Date	Insider	Type	Shares	Avg price	Owned after
Apr 16, 2026	Scott M. Giacobelloofficer: CHIEF FINANCIAL OFFICER	Sale	141,600	$4.13	295,224
Apr 15, 2026	Scott M. Giacobelloofficer: CHIEF FINANCIAL OFFICER	Sale	77,000	$3.86	436,824
Apr 14, 2026	Bryan Ballofficer: See remarks	Sale	92,460	$3.64	397,106
Apr 13, 2026	Bryan Ballofficer: See remarks	Sale	26,389	$3.46	489,566
Apr 10, 2026	Bryan Ballofficer: See remarks	Sale	6,596	$3.43	515,955
Apr 9, 2026	Bryan Ballofficer: See remarks	Sale	50,000	$3.57	522,551
Apr 9, 2026	David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER	Sale	14,500	$3.38	518,622
Apr 8, 2026	David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER	Sale	63,945	$3.40	533,122
Apr 7, 2026	David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER	Sale	94,087	$3.43	597,067
Apr 6, 2026	David James Lennondirector, officer: CHIEF EXECUTIVE OFFICER	Sale	102,395	$3.51	691,154

CongressHouse and Senate disclosures

Not reported.