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Y-mAbs Therapeutics Agrees to Acquisition by SERB Pharmaceuticals

August 5, 2025

Cooley advised Y-mAbs Therapeutics, a commercial-stage biopharmaceutical company focused on the development and commercialization of antibody-based therapeutics for the treatment of cancer, on its definitive merger agreement with SERB Pharmaceuticals. Under the agreement, SERB will acquire Y-mAbs, including its lead commercial oncology asset, DANYELZA, in an all-cash transaction representing an equity value of approximately $412 million.

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Related contacts

Bill Sorabella
Partner, New York
Bill Roegge
Partner, New York
Div Gupta
Partner, New York
Sarah Sellers
Partner, New York
Christophe Beauduin
Partner, New York
Megan Browdie
Partner, Washington, DC
Brad Goldberg
Partner, New York
Christopher Kimball
Partner, Washington, DC
Eileen Marshall
Partner, Washington, DC
Darah Protas
Partner, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Julia Kim
Special Counsel, New York
Justin Kisner
Special Counsel, San Diego
MaryBeth Shreiner
Special Counsel, Reston
Karen Tsai
Special Counsel, Washington, DC
Amanda Weiss
Special Counsel, New York
Rajdeep Roger Bains
Associate, San Diego
Dayne Brown
Associate, New York
Norma Chayo Dichi
Associate, Washington, DC
Sharon Davidov
Associate, New York
Athina Gaki
Associate, Brussels
Kyle Hess
Associate, New York
Katie Kaufman
Associate, Boston
Nicollette R. Kirby
Associate, Washington, DC
Christopher Nickas
Associate, New York
Arda Can Tekin
Associate, New York
Shaun (Tianjie) Wang
Associate, New York

Related Practices & Industries

Movable Ink to Be Acquired by STG

June 26, 2025

Cooley advised Movable Ink, an artificial intelligence-powered personalized content platform, on its definitive agreement to be acquired by STG. The transaction is expected to close in July 2025.

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Related contacts

Adam Dinow
Partner, New York
Bill Sorabella
Partner, New York
Bill Roegge
Partner, New York
Nathan Baum
Special Counsel, New York
Robert Warshaw
Associate, New York
Kyle Hess
Associate, New York
Ethan Ebert-Zavos
Associate, New York
Patrick Flanagan
Partner, New York
Len Jacoby
Partner, New York
Eileen Marshall
Partner, Washington, DC
Kristen Mathews
Partner, New York
Jeremy Morrison
Partner, Washington, DC
John Paul Oleksiuk
Partner, New York
Nyron J. Persaud
Partner, New York
Scott Talbot
Senior Counsel, Reston
Julia R. Brinton
Special Counsel, Washington, DC
David Hopkins
Special Counsel, Colorado
Andrew Linch
Special Counsel, London
Michael Bruno
Associate, New York
Amanda Gonzalez Burton
Associate, New York
Tony P. Guan
Associate, Santa Monica
Nathaniel Hearn Jr.
Associate, Chicago
Bomin Kim
Associate, New York
Richard Koch
Associate, Washington, DC
Allison Kutner
Associate, New York
Alexandra Leavy
Associate, New York
Amanda Pacheco
Associate, Palo Alto
Rubin Waranch
Associate, Colorado
Colleen R. Wellington-Caban
Associate, Washington, DC
Andy Zachrich
Associate, San Francisco
Patricia Myers
Paralegal Specialist, Colorado
Jill Simon
Senior Paralegal, New York
Kevin Gurley
Quantitative Analyst, New York

Related Practices & Industries

SKIMS Acquires SKKN by Kim From Kim Kardashian and Coty

March 21, 2025

Cooley advised Kim Kardashian, an American media personality, socialite and businesswoman, on SKIMS’ acquisition of SKKN by Kim, a beauty, skincare, and fragrance brand she founded, including the 20% stake held by Coty.

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Related contacts

Dave Young
Partner, Santa Monica
Julia Kim
Special Counsel, New York
Kyle Hess
Associate, New York
Kathryn Benvenuti
Associate, New York
Mark Cikowski
Associate, Santa Monica
Adam Chase
Partner, Washington, DC
Kimberly Nguyen
Special Counsel, Reston
Liz Paisner
Associate, New York
Stephanie Gentile
Partner, New York
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Calvin Lee
Associate, New York
John Paul Oleksiuk
Partner, New York
Ross Eberly
Partner, Santa Monica
Austin Holt
Partner, Santa Monica
Bram G. Couvreur
Partner, Santa Monica
Michael Klein
Partner, New York
Michael Neumeister
Partner, Los Angeles
Robert Eisenbach
Of Counsel, San Francisco
Jessica Girone
Associate, Santa Monica

Related Practices & Industries

Araris Biotech’s up to $1.14 Billion Acquisition by Taiho Pharmaceutical

March 17, 2025

Cooley advised Araris Biotech, a Swiss biotechnology company developing next-generation antibody-drug conjugates, on its definitive agreement to be acquired by Japan-based Taiho Pharmaceutical for up to $1.14 billion in cash.

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Related contacts

Bill Roegge
Partner, New York
Kenneth Krisko
Partner, Reston
Simon Amies
Partner, London
Rita Sobral
Special Counsel, London
Stephanie Parker Palmer
Special Counsel, Reston
Michael Bergmann
Partner, Washington, DC
Brandon W. Fenn
Partner, New York
Eileen Marshall
Partner, Washington, DC
Jeremy Morrison
Partner, Washington, DC
Stella Sarma
Partner, Brussels
Ryan Vann
Partner, Chicago
Natasha Leskovsek
Of Counsel, Washington, DC
Matthew Choy
Associate, New York
Kyle Hess
Associate, New York
Katie Kaufman
Associate, Boston
Edward (Teddy) Nimetz
Associate, New York
Alexandra Paterson
Associate, London
Joseph Perry
Associate, Reston

Related Practices & Industries

Cooley Advises Special Committee of Checkpoint on Acquisition by Sun Pharma

March 9, 2025

Cooley advised the special committee of Checkpoint Therapeutics’ (Nasdaq: CKPT) board of directors in connection with Checkpoint’s definitive agreement to be acquired by Sun Pharmaceutical Industries (NSE: SUNPHARMA) for up to $416 million in cash and contingent value rights.

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Related contacts

Bill Roegge
Partner, New York
Kevin Cooper
Partner, New York
Marc Recht
Partner, Boston
Wesley Dietrich
Associate, Washington, DC
Kathryn Benvenuti
Associate, New York
Michael Bergmann
Partner, Washington, DC
Eileen Marshall
Partner, Washington, DC
Alan W. Tamarelli
Partner, New York
Julia R. Brinton
Special Counsel, Washington, DC
Rebecca Ross
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Natasha Leskovsek
Of Counsel, Washington, DC
Karun Ahuja
Special Counsel, Chicago
Matthew Choy
Associate, New York
Jameson Davis
Associate, Boston
Kyle Hess
Associate, New York
Allison Kutner
Associate, New York
Breanna Qin
Associate, Palo Alto
Arda Can Tekin
Associate, New York
Ryan Vann
Partner, Chicago

Related Practices & Industries