Experience

Cooley Advises Investor Syndicate on $2.25 Billion Acquisition of HistoSonics

August 7, 2025

Cooley advised a syndicate of globally recognized private and public investors in connection with the management-led majority stake acquisition of HistoSonics, the developer of the Edison Histotripsy System and novel histotripsy therapy platform, valuing the company at approximately $2.25 billion.

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Patrick Loofbourrow
Partner, Singapore
Bram G. Couvreur
Partner, Santa Monica
Rama Padmanabhan
Partner, San Diego
Jenny Ge
Associate, Santa Monica
Nick Kenyon
Associate, Boston
Josh Himmelstern
Associate, San Diego
Joanna Zhang
Associate, San Diego
Megan Browdie
Partner, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Stephanie Gentile
Partner, New York
Alessandra Murata
Partner, Palo Alto
Mark Cornillez-Ty
Associate, Los Angeles
Michael Pelle
Associate, New York
Orion Armon
Partner, Colorado
Alexis Finkelberg Bortniker
Partner, San Diego
Ross Eberly
Partner, Santa Monica
Charles Haley
Partner, Palo Alto
Joanna Liebes Hubberts
Partner, San Diego
Christopher Kimball
Partner, Washington, DC
John Paul Oleksiuk
Partner, New York
Stella Sarma
Partner, Brussels
Ellie Seber
Partner, Santa Monica
Erin Trenda
Partner, San Diego
Charity Williams
Partner, San Diego
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Bryan Berman
Special Counsel, Colorado
Andrew Epstein
Special Counsel, Seattle
Robert Jacques
Special Counsel, Washington, DC
Christian Lee
Special Counsel, San Francisco
Son Nguyen
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Stefan Cohen
Associate, New York
Sharon Davidov
Associate, New York
Jameson Davis
Associate, Boston
Michael Fernando
Associate, London
Allison Kutner
Associate, New York
Alexandra Leavy
Associate, New York
Eileen Leman
Associate, Los Angeles
Sunny J. Levine
Associate, Colorado
Edward (Teddy) Nimetz
Associate, New York
Emma Plankey
Associate, Boston
Breanna Qin
Associate, Palo Alto
Shu-en Wee
Associate, Singapore
Asal Yunusov
Associate, New York
Lisa Amii
Patent Agent, Palo Alto
Anna Anderson
Paralegal Specialist, London
Patricia Myers
Paralegal Specialist, Colorado
Gayana Stokes
Senior Paralegal, Washington, DC
Katie Kissner
Quantitative Analyst, San Francisco
Daniel Grooms
Partner, Washington, DC

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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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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

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Cooley Advises io Products on $6.5 Billion Acquisition by OpenAI

May 29, 2025

Cooley advised io Products, an engineering and product manufacturing company co-founded by Jony Ive to develop, engineer and manufacture a new family of products for the artificial general intelligence era, on its approximately $6.5 billion acquisition by OpenAI. As part of the deal, Ive and his creative collective, LoveFrom, will assume deep design and creative responsibilities across OpenAI. 

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Adam Ruttenberg
Partner, Washington, DC
Craig Jacoby
Partner, San Francisco
Garth Angelo Osterman
Partner, San Francisco
Nick Davis
Partner in Charge – Seattle, Seattle
Caitlin Breitenbruck
Associate, Seattle
Sangitha Palaniappa
Associate, Palo Alto
Jamin Agosti
Associate, San Francisco
Meera Patel
Associate, San Francisco
Jonathan Rivinus
Partner, Colorado
Ryan Montgomery
Partner, Boston
Steve Flores
Partner, Chicago
Joshua Mates
Partner, San Francisco
Barbara Mirza
Partner, Santa Monica
Jeremy Morrison
Partner, Washington, DC
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Karun Ahuja
Special Counsel, Chicago
Sharon Connaughton
Special Counsel, Washington, DC
Jeff Goldman
Special Counsel, Palo Alto
Karen Tsai
Special Counsel, Washington, DC
Christopher B. Durbin
Of Counsel, Seattle
Blake Martell
Of counsel, San Francisco
Ryan Bowers
Associate, Washington, DC
David Dalton
Associate, Santa Monica
Sharon Davidov
Associate, New York
Alexander Ellebracht
Associate, Palo Alto
Michael Gladstone
Associate, New York
Michael Gladstone
Associate, New York
Elaine Huang
Associate, Palo Alto
Bomin Kim
Associate, New York
Jessica Li
Associate, Palo Alto
Anne Luquette
Associate, San Francisco
Sarah Oliai
Associate, Washington, DC
Breanna Qin
Associate, Palo Alto
Rubin Waranch
Associate, Colorado
Katie Kissner
Quantitative Analyst, San Francisco
Brandon Lefebvre
Quantitative Analyst, Boston

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Tenable to Acquire Apex Security

May 29, 2025

Cooley advised Tenable, an exposure management company, on its definitive agreement to acquire Apex Security, an innovator in securing the rapidly expanding artificial intelligence attack surface.

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Bill Roegge
Partner, New York
Meredith Klionsky
Special Counsel, Washington, DC
David Silverman
Partner, New York
Pat O'Connell
Associate, New York
Mike Lincoln
Vice Chair, Reston
Ariane A. Andrade
Partner, Chicago
Helenanne Connolly
Partner, Reston
Len Jacoby
Partner, New York
Eileen Marshall
Partner, Washington, DC
Jeremy Morrison
Partner, Washington, DC
Stella Sarma
Partner, Brussels
Chris Stack
Partner, London
Andrew Epstein
Special Counsel, Seattle
Rebecca Ross
Special Counsel, Washington, DC
Sharon Davidov
Associate, New York
Megan Drill
Associate, San Diego
Athina Gaki
Associate, Brussels
Eileen Leman
Associate, Los Angeles
Anisha Mohin
Associate, New York
Michael Pelle
Associate, New York
Shelby Saunders
Associate, New York
Patrick Sharma
Associate, Santa Monica
Patricia Myers
Paralegal Specialist, Colorado
Brandon Lefebvre
Quantitative Analyst, Boston

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Cerberus Announces Landmark Investment in Aquatech

April 3, 2025

Cooley advised Cerberus Capital Management, a global leader in alternative investing with approximately $65 billion in assets across complementary credit, real estate and private equity strategies, on its growth investment in Aquatech, a global leader in water technology and services for industrial and infrastructure markets.

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Garland “Sonny” W. Allison
Partner, Colorado
Amelia Runyan Davis
Partner, Colorado
Timothy Shapiro
Partner, Palo Alto
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Zachary Sonenshine
Associate, New York
Morgan Baker
Associate, Washington, DC
Feroz Khalidi
Associate, Colorado
Matthew Bartus
Partner, San Francisco
Adam Fleisher
Partner, Washington, DC
David Fletcher
Partner, Washington, DC
Steve Flores
Partner, Chicago
Annie Froehlich
Partner, Washington, DC
Todd Gluth
Partner, San Diego
Len Jacoby
Partner, New York
Christopher Kimball
Partner, Washington, DC
Kevin King
Partner, Washington, DC
John Lavoie
Partner in Charge – Reston, Reston
Carly Mitchell
Partner, Washington, DC
John Paul Oleksiuk
Partner, New York
Aaron Pomeroy
Partner, Colorado
Stacey Song
Partner, New York
Michael Tollini
Partner, Washington, DC
Scott Weston
Partner, Boston
Sharon Connaughton
Special Counsel, Washington, DC
Peter Crain
Special Counsel, Reston
Reid Hooper
Special Counsel, Washington, DC
Dillon Martinson
Special Counsel, Washington, DC
Rebecca Ross
Special Counsel, Washington, DC
Grant Schweikert
Special Counsel, Washington, DC
Julie Wicklund
Special Counsel, Palo Alto
Alanna B Zuchelli
Special Counsel, Reston
Meredith Ashlock
Associate, Colorado
Nicholas Balenger
Associate, Reston
Jasmine A. Banks
Associate, Washington, DC
Umer Chaudhry
Associate, Washington, DC
Susan Choy
Associate, New York
Sharon Davidov
Associate, New York
Megan Drill
Associate, San Diego
Jeremy M. Exelbert
Associate, New York
Jimmy Gilligan
Associate, Boston
Michael Gladstone
Associate, New York
Virat Gupta
Associate, Washington, DC
Dr. Aeraj ul Haque
Associate, Chicago
Bomin Kim
Associate, New York
Allison Kutner
Associate, New York
Xueqing Li
Associate, San Francisco
Sarah Oliai
Associate, Washington, DC
Shelby Saunders
Associate, New York
Leanne Andrepont
Senior Trademark Paralegal
Megan Boss
Senior Paralegal , Boston
Patricia Myers
Paralegal Specialist, Colorado
Jill Simon
Senior Paralegal, New York
Luke Sande
Patent Agent, Boston

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