by Legal Desire

24 August 2026

Sidley Represents Werewolf Therapeutics in Merger with Ambros Therapeutics and Concurrent US$150 Million Private Placement

M&A Healthcare & Life Sciences Expected to close United States

Advising firms

Sell-side acting for Werewolf Therapeutics, Inc.

Deal team

18 lawyers named

Lawyer	Firm	Seniority	Practice	Office
Rosemary Reilly Lead	Sidley	Partner	Emerging Companies and Venture Capital	Not stated
John H. Butler Lead	Sidley	Partner	M&A	Not stated
Craig Hilts	Sidley	Not stated	Emerging Companies and Venture Capital	Not stated
Rebecca Nauta	Sidley	Not stated	Emerging Companies and Venture Capital	Not stated
Emily Ivers	Sidley	Not stated	Emerging Companies and Venture Capital	Not stated
Ryan Sanguigni	Sidley	Not stated	M&A	Not stated
Adam Welland	Sidley	Not stated	Technology and Life Sciences Transactions	Not stated
Karena B. Kong	Sidley	Not stated	Technology and Life Sciences Transactions	Not stated
Sonia Gupta Barros	Sidley	Not stated	Capital Markets	Not stated
Joseph K. Chung	Sidley	Not stated	Capital Markets	Not stated
Katherine Walsh	Sidley	Not stated	Capital Markets	Not stated
Kayla West	Sidley	Not stated	Capital Markets	Not stated
Torrey Cope	Sidley	Not stated	Food, Drug and Medical Device	Not stated
Julea Lipiz	Sidley	Not stated	Food, Drug and Medical Device	Not stated
Elizabeth T. Burns	Sidley	Not stated	Employee Benefits and Executive Compensation	Not stated
Suresh Advani	Sidley	Not stated	Tax	Not stated
Sophie Arkusinski	Sidley	Not stated	Tax	Not stated
Mary Marks	Sidley	Not stated	Antitrust and Competition	Not stated

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Stated terms

Stated value: USD 150m (US$150 million)
What the figure measures: Issue size
Client: Werewolf Therapeutics, Inc.Sell-side
Counterparties: Ambros Therapeutics, Inc. (Buy-side)