Experience

Tourmaline Bio Enters Into Agreement to be Acquired by Novartis

September 9, 2025

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Bill Sorabella
Partner, New York
Brandon W. Fenn
Partner, New York
Natalie D. Vernon
Associate, Colorado
Sangitha Palaniappa
Associate, Palo Alto
Katherine Denby
Special Counsel, Washington, DC
Pengli Li
Associate, Boston
Nyron J. Persaud
Partner, New York
Megan Browdie
Partner, Washington, DC
Anne Luquette
Associate, San Francisco
Brittany Sanok
Associate, New York
Annie Froehlich
Partner, Washington, DC
Stephanie Gentile
Partner, New York
Austin Holt
Partner, Santa Monica
Christopher Kimball
Partner, Washington, DC
Eileen Marshall
Partner, Washington, DC
Carly Mitchell
Partner, Washington, DC
Phil Mitchell
Partner, New York
Ryan Montgomery
Partner, Boston
John Paul Oleksiuk
Partner, New York
Alan W. Tamarelli
Partner, New York
Dr. Michael Tuscan
Partner, Washington, DC
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Andrew Epstein
Special Counsel, Seattle
J. Brian Stalter
Special Counsel, New York

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Malachite Acquired by Circle Internet Group

August 12, 2025

Cooley advised Circle Internet Group (NYSE: CRCL), a global financial technology firm, on its acquisition of Malachite, a high-performance consensus engine from Informal Systems, to support the launch of Arc, a new open Layer-1 blockchain network purpose-built for stablecoin finance, which is expected to debut in testnet later this year.

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Adam Shaun Bloom
Partner, Palo Alto
Patrick Reed
Associate, Palo Alto
Ross Eberly
Partner, Santa Monica
Steve Flores
Partner, Chicago
Charles Haley
Partner, Palo Alto
Jean Park
Partner, New York
Milson Yu
Partner, Palo Alto
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Chris Chynoweth
Special Counsel, New York
Jeff Goldman
Special Counsel, Palo Alto
Ryan Bowers
Associate, Washington, DC
Joshua Elefant
Associate, Palo Alto
Eileen Leman
Associate, Los Angeles
Amanda Pacheco
Associate, Palo Alto
Patricia Myers
Paralegal Specialist, Colorado
Joanna Leung
Associate, Palo Alto

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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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Ambiq Micro Announces Pricing of $96 Million IPO

July 30, 2025

Cooley advised Ambiq Micro, a technology leader in ultra-low-power semiconductor solutions for edge artificial intelligence, on its $96 million initial public offering (IPO).

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Christina T. Roupas
Partner in Charge – Chicago, Chicago
Courtney M.W. Tygesson
Partner, Chicago
Michael Platt
Partner in Charge – Colorado, Colorado
Kelly Bartling
Special Counsel, Colorado
Grady Chang
Associate, Santa Monica
Keith Berets
Partner, Colorado
Will Cai
Partner, Hong Kong
Annie Froehlich
Partner, Washington, DC
Austin Holt
Partner, Santa Monica
Len Jacoby
Partner, New York
Christopher Kimball
Partner, Washington, DC
Kevin King
Partner, Washington, DC
Patrick Loofbourrow
Partner, Singapore
Barbara Mirza
Partner, Santa Monica
Tim Pitrelli
Partner, Singapore
Nicola Squire
Partner, London
Jeffrey J. Tolin
Partner, New York
Francis Wheeler
Senior Counsel, Colorado
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Alaina DeBona
Special Counsel, Chicago
Andrew Epstein
Special Counsel, Seattle
Brooke Fritz
Special Counsel, Colorado
Rebecca Ross
Special Counsel, Washington, DC
Vince Sampson
Special Counsel, Washington, DC
Michael Shen
Special Counsel, Shanghai
Karen Tsai
Special Counsel, Washington, DC
Blake Martell
Of counsel, San Francisco
Mateus Kaba Aboud
Associate, Chicago
Adam Bloom
Associate, Chicago
Alexis Guillermo Buz
Associate, San Diego
Umer Chaudhry
Associate, Washington, DC
Stefan Cohen
Associate, New York
Megan Drill
Associate, San Diego
Ryan Guo
Associate, New York
Sarah Oliai
Associate, Washington, DC
Samuel Paullin
Associate, Chicago
Taryn Wilkins
Associate, Chicago
Katherine Duplay
Paralegal Specialist, Colorado
Alla Kagan
Paralegal Specialist, San Diego
Robin K. Lee
Paralegal Specialist, Colorado
Brian Youn
Paralegal Specialist, Palo Alto
Brian Mitchell
Transactional Quantitative Analyst, San Diego

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Leads Biolabs Announces HK$1.29 Billion IPO

July 25, 2025

Cooley advised Nanjing Leads Biolabs Co. (Leads Biolabs), a clinical-stage biotechnology company that discovers, develops and commercializes new therapies in oncology, autoimmune and other severe diseases, on its HK$1.29 billion initial public offering (IPO).

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Michael Yu
Partner in Charge – Hong Kong, Hong Kong
Yiming Liu
Partner in Charge – Shanghai, Shanghai
Kaiting Yang
Counsel, Hong Kong
Yiying Wang
Counsel, Shanghai
Yunxiang Xu
Associate, Shanghai
Brian Lau
Associate, Hong Kong
Alex Wu
Associate, Shanghai
Daniel Zheng
Associate, Shanghai
Zhengyang Li
International Legal Project Manager, Hong Kong
Cindy Pan
International Legal Project Manager, Hong Kong
Zoe Wang
International Legal Project Manager, Shanghai
Xander Lee
Partner, Santa Monica
Francis Wheeler
Senior Counsel, Colorado
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Vince Sampson
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC

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Legal 500 US: Domestic Tax (2015)

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