Experience

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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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
Dr. Matthew Pavao
Partner, Boston
Stella Sarma
Partner, Brussels
Ryan Vann
Partner, Chicago
Natasha Leskovsek
Of Counsel, Washington, DC
Elizabeth Caruso
Associate, New York
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
Dr. Robert E. Powers
Associate, Boston
María Álvarez Requejo Heredero
Associate, Brussels

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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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Bill Roegge
Partner, New York
Kevin Cooper
Partner, New York
Marc Recht
Partner, Boston
Wesley Dietrich
Associate, Washington, DC
Katie 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
Kristopher Kleiner
Special Counsel, Colorado
Rebecca Ross
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Natasha Leskovsek
Of Counsel, Washington, DC
Karun Ahuja
Special Counsel, Chicago
Elizabeth Caruso
Associate, New York
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

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Alani Nu’s $1.8 Billion Sale to Celsius

February 20, 2025

Cooley advised Katy Hearn and Haydn Schneider, co-founders of Alani Nu, in connection with Celsius Holdings’ (Nasdaq: CELH) definitive agreement to acquire the company for $1.8 billion in cash and stock.

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Bill Roegge
Partner, New York
Stephanie Leigh
Paralegal Specialist, San Diego
Stephanie Gentile
Partner, New York
Jeremy Morrison
Partner, Washington, DC
Vicky Kandabarow
Associate, Washington, DC
Kyle Hess
Associate, New York
Wesley Dietrich
Associate, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Todd Gluth
Partner, San Diego
Sarah Lightdale
Partner, New York
Eileen Marshall
Partner, Washington, DC
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Julia R. Brinton
Special Counsel, Washington, DC
William Corcoran
Of Counsel, Boston

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Tenable to Acquire Vulcan Cyber

January 29, 2025

Cooley advised Tenable Holdings (Nasdaq: TENB), the exposure management company exposing and closing the cybersecurity gaps that erode business value, on its definitive agreement to acquire Vulcan Cyber, an innovator in exposure management, for $150 million in enterprise value.

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Bill Roegge
Partner, New York
Meredith Klionsky
Special Counsel, Washington, DC
Katie Benvenuti
Associate, New York
Mike Lincoln
Vice Chair, Reston
Yvan-Claude Pierre
Partner, New York
Ariane A. Andrade
Partner, Chicago
Caroline Hobson
Partner, London
Len Jacoby
Partner, New York
Eileen Marshall
Partner, Washington, DC
Jeremy Morrison
Partner, Washington, DC
Leo Spicer-Phelps
Partner, London
Chris Stack
Partner, London
Christine Graham
Special Counsel, London
Rebecca Ross
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Karen Tsai
Special Counsel, Washington, DC
Julie Wicklund
Special Counsel, Palo Alto
Olivia Anderson
Associate, London
Kafeel Azher
Associate, London
Danielle Crinnion
Associate, Boston
Sharon Davidov
Associate, New York
Megan Drill
Associate, San Diego
Athina Gaki
Associate, Brussels
Michael Gladstone
Associate, New York
Eileen Leman
Associate, Los Angeles
Anisha Mohin
Associate, New York
Shelby Saunders
Associate, New York
Patricia Myers
Paralegal Specialist, Colorado
Brandon Lefebvre
Quantitative Analyst, Boston

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Personalis Announces Expanded Collaboration With Tempus AI

August 16, 2024

Cooley advised Personalis, a company transforming the active management of cancer through breakthrough personalized testing, on its expanded commercial relationship with Tempus AI, including an equity investment by Tempus into Personalis.

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Related contacts

Bill Roegge
Partner, New York
Laura Berezin
Partner, Seattle
Asa Henin
Partner, San Diego
Patrick Pang
Associate, New York
Allison Peth
Associate, Palo Alto
Jeewon Lee
Associate, New York
Matthew Choy
Associate, New York
Megan Browdie
Partner, Washington, DC
David Burns
Special Counsel, Washington, DC

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Law360 Mergers & Acquisitions Editorial Advisory Board (2024) 

The 'outstanding' New York-based Bill Roegge is knowledgeable on cross-border private and public M&A

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