About Gerard

Gerard O’Shea focuses his practice on employment counseling and litigation for clients ranging from early stage startups to Fortune 100 companies. With a deep understanding of both employment law and corporate matters and transactions, including financings, he helps clients understand employment-related legal issues in the context of running a business, which allows him and his clients to formulate business-practical solutions to reflect, manage, and mitigate legal risk in savvy and business-practical ways.

View full bio

Passions

Family

Emerging Technologies

New York Mets

Experience

Caris Life Sciences Announces $494 Million IPO

Caris Life Sciences Announces $494 Million IPO

June 20, 2025

Cooley advised the underwriters of Caris Life Sciences, a patient-centric, next-generation artificial intelligence techbio company and precision medicine pioneer, in connection with Caris’ $494 million initial public offering (IPO).

Related contacts

Eric Blanchard
Partner, Boston
Div Gupta
Partner, New York
Charlie Kim
Partner, San Diego
Minkyu Park
Special Counsel, New York
Mark Ballantyne
Partner, Reston
Ariane A. Andrade
Partner, Chicago
Shamis Beckley
Partner, Boston
Caitlin Courtney
Partner, Palo Alto
Annie Froehlich
Partner, Washington, DC
Daniel Grooms
Partner, Washington, DC
Jonie Ing Kondracki
Partner, San Francisco
Phil Mitchell
Partner, New York
Sonia Nath
Partner, Washington, DC
Gerard O'Shea
Partner, New York
Tracy Rubin
Partner, Palo Alto
Francis Wheeler
Senior Counsel, Colorado
Son Nguyen
Special Counsel, Washington, DC
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
William Corcoran
Of Counsel, Boston
Natasha Leskovsek
Of Counsel, Washington, DC
Trevor Bossi
Associate, Boston
Cara Buchicchio
Associate, New York
Eric J. Delgado
Associate, New York
Matthew Iannone
Associate, New York
Wyatt Kernell
Associate, Colorado
Allison Kutner
Associate, New York
Calvin Lee
Associate, New York
Amiti C. Rothstein
Associate, New York
Dr. Jason Valentine
Associate, Washington, DC
Margaux Arntson
Associate

Related Practices & Industries

Capital Markets
Life Sciences
Healthcare
Biotechnology
Technology
Artificial Intelligence
Life Sciences and Healthcare Regulatory
Cyber/Data/Privacy
Labor and Employment
Tax
Commercial Litigation
CFIUS
Patent Counseling and Prosecution

SiteOne Therapeutics to Be Acquired by Eli Lilly for up to $1 Billion

SiteOne Therapeutics to Be Acquired by Eli Lilly for up to $1 Billion

May 28, 2025

Cooley advised SiteOne Therapeutics, a private biotechnology company developing small molecule inhibitors of sodium channels to treat pain and other neuronal hyperexcitability disorders, on its acquisition by Eli Lilly.

Read more

Related contacts

Laura Berezin
Partner, Seattle
Sara Semnani
Partner, Santa Monica
Rowook Park
Partner, San Diego
Charity Williams
Partner, San Diego
Rena Kaminsky
Special Counsel, Palo Alto
Todd Gluth
Partner, San Diego
Lila Hope
Partner, Palo Alto
Noel Ripberger-Scheick
Associate, Palo Alto
Tucker Cochenour
Associate, Palo Alto
Kristin O'Hanlon
Special Counsel, San Francisco
David Fletcher
Partner, Washington, DC
Jamie Leigh
Partner, San Francisco
Carly Mitchell
Partner, Washington, DC
Jeremy Morrison
Partner, Washington, DC
Gerard O'Shea
Partner, New York
Marty Schenker
Senior Counsel , San Francisco
Chen Chen
Special Counsel, Palo Alto
Andrew Epstein
Special Counsel, Seattle
Karen Tsai
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Selin Akkan
Associate, Palo Alto
Mari Dugas
Associate, Washington, DC
Virat Gupta
Associate, Washington, DC
Joseph J. Kim
Associate, Palo Alto
Eileen Leman
Associate, Los Angeles
Ehijele Olumese
Associate, Santa Monica
Joseph Perry
Associate, Reston
Hannah Rausch
Associate, New York
Melody Van Horn
Senior Paralegal, Palo Alto

Related Practices & Industries

Mergers and Acquisitions
Capital Markets
Life Sciences Corporate Partnering and Licensing
Life Sciences
Healthcare
Biotechnology
Compensation and Benefits
Cyber/Data/Privacy
Emerging Companies
Labor and Employment
Life Sciences and Healthcare Regulatory
Tax
Antitrust and Competition

PetLab Co. Announces Majority Stake Sale to BC Partners

PetLab Co. Announces Majority Stake Sale to BC Partners

February 26, 2025

Cooley advised PetLab Co., a rapidly growing independent pet supplement brand headquartered in London, on its majority stake sale to BC Partners, a top international investment firm.

Read more

Related contacts

Ben Shribman
Partner, London
Kevin Cooper
Partner, New York
Louise Burt
Associate, London
David Wilson
Partner, London
Eerik Kukebal
Associate, London
Aaron Pomeroy
Partner, Colorado
Paula Holland
Partner, London
Harry Calkin
Associate, London
Rick Jantz
Associate, Santa Monica
Jia Xie
Associate, London
Patrick Flanagan
Partner, New York
Paula Fleckenstein
Associate, Reston
David Walsh
Senior Counsel, Reston
Chris Coulter
Partner, London
Megan Browdie
Partner, Washington, DC
Caroline Hobson
Partner, London
Colm Murphy
Partner, London
Gerard O'Shea
Partner, New York
Lauren A. Reichardt
Partner, New York
Guadalupe Sampedro
Partner, London
Stella Sarma
Partner, Brussels
Leo Spicer-Phelps
Partner, London
Nicola Squire
Partner, London
Chris Stack
Partner, London
Henry Stewart
Partner, London
Michael Tollini
Partner, Washington, DC
Karun Ahuja
Special Counsel, Chicago
Sharon Connaughton
Special Counsel, Washington, DC
Christine Graham
Special Counsel, London
Jack Jones
Special Counsel, London
Cristina DeBiase
Associate, Boston
Athina Gaki
Associate, Brussels
Gary Warren Hunt III
Associate, Washington, DC
Danielle Joe
Associate, Washington, DC
Alexandra Leavy
Associate, New York
Daniel Millard
Associate, London
Megan Mojabi (Flynn)
Associate, London
Breanna Qin
Associate, Palo Alto
Alice Wong
Associate, London
Steven A. Zuckerman
Associate, New York
Margie Murphy
Paralegal Specialist, New York
Jake Ironfield
Transactional Quantitative Analyst, New York
Kafeel Azher
Associate, London

Related Practices & Industries

Mergers and Acquisitions
Tax
Compensation and Benefits
Debt Finance
Emerging Companies
Technology Transactions
Technology
Labor and Employment
Antitrust and Competition
Patent Counseling and Prosecution
Cyber/Data/Privacy
Trademark, Copyright and Advertising
Commercial Litigation
Business Restructuring

H1 Acquires Ribbon Health

H1 Acquires Ribbon Health

January 8, 2025

Cooley advised H1, a global healthcare data technology company, on its acquisition of Ribbon Health.

Read more

Related contacts

Jeff Laretto
Partner, New York
Garth Angelo Osterman
Partner, San Francisco
Nathan Baum
Special Counsel, New York
Stephanie Gentile
Partner, New York
Ryan Montgomery
Partner, Boston
Sarah Buchik
Associate, New York
Shaun (Tianjie) Wang
Associate, New York
Megan Browdie
Partner, Washington, DC
Patrick Flanagan
Partner, New York
Michael Klein
Partner, New York
Len Jacoby
Partner, New York
Kristen Mathews
Partner, New York
Phil Mitchell
Partner, New York
Gerard O'Shea
Partner, New York
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Stacey A. Bradford
Special Counsel, Washington, DC
Julia R. Brinton
Special Counsel, Washington, DC
Sharon Davidov
Associate, New York
Jeremy M. Exelbert
Associate, New York
Michael Gladstone
Associate, New York
Gary Warren Hunt III
Associate, Washington, DC
Sunny J. Levine
Associate, Colorado
Amanda Pacheco
Associate, Palo Alto
Liz Paisner
Associate, New York
Katharina Schwarz
Associate, New York
Robert Warshaw
Associate, New York
Leanne Andrepont
Senior Trademark Paralegal
Patricia Myers
Paralegal Specialist, Colorado

Related Practices & Industries

Mergers and Acquisitions
Technology Transactions
Healthcare
Life Sciences
Life Sciences and Healthcare Regulatory
Tax
Debt Finance
Compensation and Benefits
Labor and Employment
Emerging Companies
Technology
CooleyREG
Cyber/Data/Privacy
Antitrust and Competition
Business Restructuring
Trademark, Copyright and Advertising
Patent Counseling and Prosecution

Frame AI Announces Sale to HubSpot

Frame AI Announces Sale to HubSpot

December 6, 2024

Cooley advised Frame AI, an artificial intelligence-powered platform, on its sale to HubSpot, the leading customer platform for scaling businesses.

Read more

Related contacts

Kevin Cooper
Partner, New York
Andrew Gunther
Associate, New York
Stephanie Gentile
Partner, New York
Len Jacoby
Partner, New York
Kaitland Kennelly
Partner, New York
Kristen Mathews
Partner, New York
Gerard O'Shea
Partner, New York
Babak (Bo) Yaghmaie
Partner, New York
Bryan Berman
Special Counsel, Colorado
Ryan Montgomery
Partner, Boston
Sharon Davidov
Associate, New York
Alexander Fullman
Associate, New York
Ryan Guo
Associate, New York
Bomin Kim
Associate, New York
Allison Kutner
Associate, New York
Jason Nam
Associate, New York
Erica Russell
Associate, San Francisco
Hardy Zhou
Associate, New York
Jake Ironfield
Transactional Quantitative Analyst, New York

Related Practices & Industries

Mergers and Acquisitions
Artificial Intelligence
Technology
Technology Transactions
Emerging Companies
Tax
Cyber/Data/Privacy
Compensation and Benefits
Labor and Employment
Commercial Litigation
View more

Admissions and credentials

New York

Massachusetts

South Carolina

Rankings and accolades

Best Lawyers: Litigation – Labor and Employment (2025)

Chambers USA: Labor & Employment – New York (2025)