Sean O'Neill

Partner
soneill@cooley.com
Full contact info

About Sean

Sean represents emerging growth companies at all stages, as well as venture capital firms and strategic investors that finance and acquire these companies. In addition to providing strategic counseling to his clients, Sean’s practice encompasses venture capital financings, mergers and acquisitions, corporate governance and general corporate matters.

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Experience

Machinify Announces Acquisition by New Mountain Capital

Machinify Announces Acquisition by New Mountain Capital

January 10, 2025

Cooley advised Machinify, a provider of artificial intelligence-powered software transforming healthcare payments, on its definitive agreement to be acquired by New Mountain Capital.

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Garth Angelo Osterman
Partner, San Francisco
Maureen Nagle
Special Counsel, Washington, DC
Nicolas Francis
Associate, San Francisco
Katie Rosati
Associate, Seattle
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
David Dalton
Associate, Santa Monica
Steve Flores
Partner, Chicago
Sean O'Neill
Partner, Santa Monica
Alexis Finkelberg Bortniker
Partner, San Diego
Ross Eberly
Partner, Santa Monica
Charles Haley
Partner, Palo Alto
Ryan Montgomery
Partner, Boston
Jonathan Rivinus
Partner, Colorado
Mark Medearis
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Alexander Ellebracht
Associate, Palo Alto
Josh Himmelstern
Associate, San Diego
Jessica Li
Associate, Palo Alto
Alison L. Tong
Associate, Seattle
Novak Topalovic
Associate, San Diego
Rubin Waranch
Associate, Colorado
Raquel Zepeda
Associate, San Francisco
Patricia Myers
Paralegal Specialist, Colorado
Melanie Yuvienco
Paralegal Specialist, Palo Alto
Brian Mitchell
Transactional Quantitative Analyst, San Diego

Related Practices & Industries

Digital Health
Artificial Intelligence
Mergers and Acquisitions
Technology Transactions
Healthcare
Life Sciences
Life Sciences and Healthcare Regulatory
Compensation and Benefits
Emerging Companies
Antitrust and Competition
CooleyREG
Labor and Employment
Tax

Gardens Announces $31.3 Million Series A

Gardens Announces $31.3 Million Series A

July 11, 2024

Cooley advised video game studio Gardens Interactive on its $31.3 million Series A funding.

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Related contacts

Nick Hobson
Partner in Charge, Santa Monica, Santa Monica
Sean O'Neill
Partner, Santa Monica
James H. Reizman
Associate, Santa Monica
Sarah Oliai
Associate, Washington, DC
Gary Warren Hunt III
Associate, Washington, DC

Related Practices & Industries

Emerging Companies
Gaming and Interactive Media
Technology
Tax
CFIUS
Cyber/Data/Privacy
Trademark, Copyright and Advertising

GrayMatter Robotics Announces $45 Million Series B

GrayMatter Robotics Announces $45 Million Series B

June 20, 2024

Cooley advised GrayMatter Robotics, an artificial intelligence-powered robotics leader empowering humans with intelligent automation, on its $45 million Series B financing.

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Related contacts

Dave Young
Partner, Santa Monica
Sean O'Neill
Partner, Santa Monica
James H. Reizman
Associate, Santa Monica
Rebecca Ross
Special Counsel, Washington, DC
Kevin King
Partner, Washington, DC
Christopher Kimball
Partner, Washington, DC
John Paul Oleksiuk
Partner, New York
John Sellers
Senior Counsel, Palo Alto

Related Practices & Industries

Emerging Companies
Artificial Intelligence
CFIUS
Trademark, Copyright and Advertising

Community Closes $25 Million Series B

Community Closes $25 Million Series B

March 22, 2024

Cooley advised Community, a short message service (SMS) customer engagement platform that connects businesses, brands, political and public figures, creators, musicians, celebrities and more, on its $25 million Series B financing. Partner Dave Young led the Cooley team.

Related contacts

Dave Young
Partner, Santa Monica
John Paul Oleksiuk
Partner, New York
Matt Hallinan
Partner, Santa Monica
Austin Holt
Partner, Santa Monica
Ross Eberly
Partner, Santa Monica
Barbara Mirza
Partner, Santa Monica
James C. Allen
Associate, Santa Monica
Michelle Liskanich
Associate, Santa Monica
James H. Reizman
Associate, Santa Monica
Colette Ghazarian
Associate, Los Angeles
Eileen Leman
Associate, Los Angeles
Jessica Girone
Associate, Santa Monica
Sean O'Neill
Partner, Santa Monica
Sarah Oliai
Associate, Washington, DC
Daniel Goldberger
Special Counsel, New York
Rebecca Ross
Special Counsel, Washington, DC

Related Practices & Industries

Emerging Companies
Venture Capital
Software

Therabody Closes $165 Million Growth Equity Round

Therabody Closes $165 Million Growth Equity Round

October 27, 2022

Cooley advised Therabody, a global pioneer in wellness technology, on its $165 million growth equity round led by private equity firm North Castle Partners.

Related contacts

Sean O'Neill
Partner, Santa Monica
Michelle Liskanich
Associate, Santa Monica
Nick Hobson
Partner in Charge, Santa Monica, Santa Monica
Sean Murphy
Partner, Singapore

Related Practices & Industries

Emerging Companies
Venture Capital
Corporate Governance and Securities Regulation
View more

Admissions and credentials

California