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Ally Bridge affiliates, Fan Yu (WHWK) report 5.68M-share, 9.4% stake in Whitehawk

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Form Type
SCHEDULE 13G/A

Rhea-AI Filing Summary

Whitehawk Therapeutics, Inc. is the subject of an amended Schedule 13G filing by a group of Ally Bridge–affiliated investment entities and Fan Yu. Based on 57,009,010 common shares outstanding as of June 30, 2026, the group reports beneficial ownership of 5,679,253 shares of common stock, representing 9.4% of the class. This total includes 817,939 shares held by Ally Bridge MedAlpha Master Fund L.P., 1,651,388 shares held by ABG V-SIV Limited, and 3,209,926 shares issuable upon exercise of currently exercisable warrants held by ABG V-SIV Limited, which are subject to a 9.99% beneficial ownership limitation on exercise. ABG Innovation SO Limited no longer holds shares in the issuer. Control and management relationships among the reporting entities ultimately trace to Fan Yu, who, together with the entities, may be deemed to share beneficial ownership but disclaims beneficial ownership of the securities.

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Shares outstanding 57,009,010 shares Common stock outstanding as of June 30, 2026, used for ownership percentages
Total beneficial ownership 5,679,253 shares Shares beneficially owned by Ally Bridge–affiliated entities and Fan Yu
Ownership percentage 9.4% Percent of Whitehawk common stock beneficially owned by the reporting group
MedAlpha Fund holdings 817,939 shares Common shares held of record by Ally Bridge MedAlpha Master Fund L.P.
ABG V-SIV common shares 1,651,388 shares Common shares held of record by ABG V-SIV Limited
Warrant shares 3,209,926 shares Shares issuable upon exercise of currently exercisable warrants held by ABG V-SIV Limited
Beneficial ownership cap 9.99% Beneficial ownership limitation applicable to warrant exercises
Schedule 13G regulatory
"The information contained on the cover pages to this is incorporated by reference"
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
beneficial ownership financial
"The ownership information presented herein represents beneficial ownership of the Issuer's common stock"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
beneficial ownership limitation regulatory
"The warrants are currently exercisable and are subject to a 9.99% beneficial ownership limitation on exercise"
A beneficial ownership limitation is a rule that caps the percentage of a company’s shares an investor can be treated as owning or controlling for voting, regulatory or tax purposes. It matters to investors because it can restrict how many shares a person or group can buy or vote, affect takeover chances, and influence share liquidity and value — like a speed limit that prevents any single driver from taking over the whole road.
shared voting power financial
"Shared Voting Power 5,679,253.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
dispositive power financial
"Shared Dispositive Power 5,679,253.00"
Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.
warrants financial
"3,209,926 shares of Common Stock issuable upon exercise of warrants held of record"
Warrants are special documents that give you the right to buy a company's stock at a set price before a certain date. They are often used as a way for companies to attract investors or raise money, and their value can increase if the company's stock price goes up.

FAQ

What percentage of Whitehawk Therapeutics (WHWK) shares do the Ally Bridge entities and Fan Yu report owning?

The reporting group discloses beneficial ownership of 9.4% of Whitehawk Therapeutics’ common stock, representing 5,679,253 shares based on 57,009,010 shares outstanding as of June 30, 2026.

How many Whitehawk Therapeutics (WHWK) shares are held and issuable under warrants by the Ally Bridge entities?

The group reports 817,939 shares held by Ally Bridge MedAlpha Master Fund L.P. and 1,651,388 shares held by ABG V-SIV Limited, plus 3,209,926 shares issuable upon exercise of currently exercisable warrants held by ABG V-SIV Limited.

What is the beneficial ownership limitation on the Whitehawk Therapeutics (WHWK) warrants held by ABG V-SIV Limited?

The warrants held by ABG V-SIV Limited are currently exercisable but subject to a 9.99% beneficial ownership limitation on exercise, capping ownership through warrant exercises below that percentage of outstanding common stock.

Who are the reporting persons in the Whitehawk Therapeutics (WHWK) Schedule 13G/A?

Reporting persons include ABG Management Ltd., several Ally Bridge–affiliated funds and general partners, ABG V-SIV Limited, ABG-SIV, L.P., and Fan Yu, who is the controlling stockholder of key management and general partner entities.

What is the total number of Whitehawk Therapeutics (WHWK) shares outstanding used in the ownership calculation?

The ownership percentages are calculated using 57,009,010 shares of Whitehawk Therapeutics common stock outstanding as of June 30, 2026, as disclosed by the issuer.

Does ABG Innovation SO Limited still hold Whitehawk Therapeutics (WHWK) shares?

No. The filing states that ABG Innovation SO Limited no longer holds shares in Whitehawk Therapeutics, so it reports zero beneficial ownership in this amendment.

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

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Learn about SEC filing dates





00032Q104

(CUSIP Number)
06/30/2026

(Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)




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ABG Management Ltd.
Signature:By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
Ally Bridge Group (NY) LLC
Signature:By: ABG Management Ltd., its managing member, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
Ally Bridge MedAlpha Master Fund L.P.
Signature:By: Ally Bridge Group (NY) LLC, its manager, By: ABG Management Ltd., its managing member, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
ABG Innovation Capital Partners III GP Limited
Signature:By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
ABG Innovation Capital Partners III GP, L.P.
Signature:By: ABG Innovation Capital Partners III GP Limited, its general partner, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
Ally Bridge Group Innovation Capital Partners III, L.P.
Signature:By: ABG Innovation Capital Partners III GP, L.P., By: ABG Innovation Capital Partners III GP Limited, By: /s/ Fan Yu
Name/Title:Fan Yu, Director
Date:08/14/2026
ABG Innovation-SO Limited
Signature:By: /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
ABG Global Life Science Capital Partners V GP Limited
Signature:By: /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
ABG Global Life Science Capital Partners V GP, L.P.
Signature:By: ABG Global Life Science Capital Partners V GP Limited, its general partner, By: /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
Ally Bridge Group Global Life Science Capital Partners V, L.P.
Signature:By: ABG Global Life Science Capital Partners V GP, L.P., ABG Global Life Science Capital Partners V GP Limited, /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
ABG-SIV, L.P.
Signature:By: ABG Global Life Science Capital Partners V GP, L.P., ABG Global Life Science Capital Partners V GP Limited, /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
ABG V-SIV Limited
Signature:By: /s/ Shan-ju Yeh
Name/Title:Shan-ju Yeh, Director
Date:08/14/2026
Fan Yu
Signature:/s/ Fan Yu
Name/Title:Fan Yu
Date:08/14/2026
Exhibit Information

Exhibit 99: Joint Filing Agreement (previously filed).