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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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Drata Announces Acquisition of SafeBase

February 10, 2025

Cooley advised Drata, a trust management platform, on its definitive agreement to acquire SafeBase, a trust center platform designed for friction-free security reviews.

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Rama Padmanabhan
Partner, San Diego
Ken Rollins
Partner in Charge – San Diego, San Diego
Jenny Ge
Associate, Santa Monica
Dylan Kornbluth
Associate, San Diego
Patrick Reed
Associate, Palo Alto
Novak Topalovic
Associate, San Diego
Ross Eberly
Partner, Santa Monica
Todd Gluth
Partner, San Diego
Charles Haley
Partner, Palo Alto
Phil Mitchell
Partner, New York
Alessandra Murata
Partner, Palo Alto
Stella Sarma
Partner, Brussels
Summer Wynn
Partner, San Diego

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Poseida Therapeutics Announces Agreement to Be Acquired by Roche for up to $1.5 Billion

November 26, 2024

Cooley advised Poseida Therapeutics, a clinical-stage allogeneic cell therapy and genetic medicines company advancing differentiated nonviral treatments for patients with cancer, autoimmune and rare diseases, on its merger agreement to be acquired by Roche at a price of $9 per share in cash at closing, plus a non-tradable contingent value right to receive up to an aggregate of $4 per share in cash, payable upon achievement of specified milestones. The price payable at closing represents a total equity value of up to $1.5 billion and a premium of approximately 215% to Poseida’s closing share price on November 25, 2024. Cooley previously represented Poseida in its initial public offering, equity and debt transactions, and collaboration agreements, including its collaboration agreement with Roche.

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Related contacts

Rowook Park
Partner, San Diego
Barbara Borden
Senior Counsel, San Diego
Julia Kim
Special Counsel, New York
Rajdeep Roger Bains
Associate, San Diego
Josh Himmelstern
Associate, San Diego
Elaine Huang
Associate, Palo Alto
Anne Luquette
Associate, San Francisco
Allie Pilmer
Associate, San Diego
Tom Coll
Partner, San Diego
Kenneth Krisko
Partner, Reston
Edmond Lay
Partner, San Diego
John Forrest
Associate, Boston
Jenny Ge
Associate, Santa Monica
Peter Adams
Partner, San Diego
Michael Bergmann
Partner, Washington, DC
Megan Browdie
Partner, Washington, DC
Ross Eberly
Partner, Santa Monica
Todd Gluth
Partner, San Diego
Christopher Kimball
Partner, Washington, DC
Alessandra Murata
Partner, Palo Alto
Jeffrey J. Tolin
Partner, New York
Robert Eisenbach
Of Counsel, San Francisco
Maricel Mojares-Moore
Special Counsel, San Francisco
Dillon Martinson
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Natasha Leskovsek
Of Counsel, Washington, DC
Alexandria Ashour
Associate, San Diego
Navya Dasari
Associate, New York
Nicollette R. Kirby
Associate, Washington, DC
Allison Kutner
Associate, New York
Calvin Lee
Associate, New York
Calvin Lee
Associate, New York
Breanna Qin
Associate, Palo Alto
Shelby Saunders
Associate, New York
Shaun (Tianjie) Wang
Associate, New York
Colleen R. Wellington-Caban
Associate, Washington, DC
Jack Whitaker
Associate, San Diego
Anna Anderson
Paralegal Specialist, London
Novak Topalovic
Associate, San Diego

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Chimagen Biosciences Announces Sale of CMG1A46 to GSK

October 29, 2024

Cooley advised Chimagen Biosciences, a privately held biotechnology company, on its agreement to sell CMG1A46, a clinical-stage dual CD19 and CD20-targeted T-cell engager (TCE), to GSK, a global biopharma company, for an upfront payment of $300 million, plus success-based development and commercial milestone payments totaling up to $550 million.

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Related contacts

Marya Postner
Partner, Palo Alto
Yiming Liu
Partner in Charge – Shanghai, Shanghai
Zack Gong
Associate, Shanghai
Jenny Ge
Associate, Santa Monica
Monica Xu
Special Counsel, Shanghai
Christopher Kimball
Partner, Washington, DC
Rama Padmanabhan
Partner, San Diego
Aaron Pomeroy
Partner, Colorado
Jonathan Rivinus
Partner, Colorado
Rachel Thorn
Of counsel, New York
David Wilson
Partner, London
David Burns
Special Counsel, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Bin Wang
Special Counsel, Palo Alto
Robert Eisenbach
Of Counsel, San Francisco
Robert Eisenbach
Of Counsel, San Francisco
Natasha Leskovsek
Of Counsel, Washington, DC
Eerik Kukebal
Associate, London
Amanda Pacheco
Associate, Palo Alto
Leo Spicer-Phelps
Partner, London
Lunga Su
Associate, Shanghai
Ivy Wang
Associate, Shanghai
Zhijing Yu
Associate, Singapore
Letian Wei
Legal Consultant, Shanghai

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Longboard Pharmaceuticals Announces $2.6 Billion Sale to Lundbeck

October 14, 2024

Cooley advised Longboard Pharmaceuticals, a clinical-stage biopharmaceutical company focused on developing novel, transformative medicines for neurological diseases, on its $2.6 billion sale to Lundbeck.

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Related contacts

Kevin Cooper
Partner, New York
Steve Przesmicki
Partner, San Diego
Alessandra Murata
Partner, Palo Alto
David Burns
Special Counsel, Washington, DC
Jenny Ge
Associate, Santa Monica
Jeewon Lee
Associate, New York
Charity Williams
Partner, San Diego
Son Nguyen
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Cara Buchicchio
Associate, New York
Jameson Davis
Associate, Boston
Sela Dougherty
Associate, Miami
Rubin Waranch
Associate, Colorado

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