Kathy O'Neill

Partner
Full contact info

I focus on antitrust and competition law, and I advise our clients on all aspects of government merger review, antitrust investigations, litigation and compliance.

Experience

Laekna Announces Clinical Collaboration With Lilly

November 26, 2024

Cooley advised Laekna (HKSE: 2105.HK), global biotech company focused on novel drug development for metabolic and cancer diseases, on its clinical collaboration with Eli Lilly and Company to accelerate the development of LAE102, a novel ActRIIA mAb as a treatment for obesity.

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Yiming Liu
Partner in Charge – Shanghai, Shanghai
Bin Wang
Special Counsel, Palo Alto
Zack Gong
Associate, Shanghai
Kathy O'Neill
Partner, Washington, DC
David Burns
Special Counsel, Washington, DC
Tonny Yu
Associate, Hong Kong
Zhijing Yu
Associate, Singapore

Related Practices & Industries

Kpler Announces $241 Million Acquisition of Spire’s Maritime Business

November 13, 2024

Cooley advised Kpler, a fast-growing data and analytics firm on a mission to build one platform for global trade intelligence, on its acquisition of Spire Global’s maritime business for approximately $241 million.

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Ben Shribman
Partner, London
Rita Sobral
Special Counsel, London
Leo Spicer-Phelps
Partner, London
Louise Burt
Associate, London
Marzia Di Candido
Associate, London
Christine Graham
Special Counsel, London
Caroline Hobson
Partner, London
Mo Swart
Associate, London
Natasha Kaye
Partner, London
Eerik Kukebal
Associate, London
Jeffrey J. Tolin
Partner, New York
Chris Coulter
Partner, London
David Fletcher
Partner, Washington, DC
Christopher Kimball
Partner, Washington, DC
Kathy O'Neill
Partner, Washington, DC
Chris Stack
Partner, London
Amy Collins
Special Counsel, London
Sharon Connaughton
Special Counsel, Washington, DC
Rebecca Ross
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Cristina DeBiase
Associate, Boston
Liza Hadley
Associate, Boston
Chris Lynn
Associate, London
Daniel Millard
Associate, London
Rubin Waranch
Associate, Colorado

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Printify Announces Merger With Printful

November 11, 2024

Cooley advised Printify, a technology platform headquartered in Latvia that makes it possible for anyone, anywhere, to sell customized products with zero upfront investment, on its merger with Printful, a Latvia-based technology company that helps ecommerce sellers of all sizes use production-on-demand and other fulfillment solutions to turn their ideas into brands and products.

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Nick Davis
Partner in Charge – Seattle, Seattle
John Robertson
Senior Counsel, Seattle
Caitlin Breitenbruck
Associate, Seattle
Phoebe Huang
Associate, Seattle
Katie Rosati
Associate, Seattle
Tracy Rubin
Partner, Palo Alto
Michael Bergmann
Partner, Washington, DC
Paula Holland
Partner, London
Kathy O'Neill
Partner, Washington, DC
Jonathan Rivinus
Partner, Colorado
Megan Browdie
Partner, Washington, DC
Ross Eberly
Partner, Santa Monica
Andrew Epstein
Special Counsel, Seattle
Sharon Connaughton
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Zheng Zhou
Associate, Palo Alto
Rebecca Siegel
Associate, San Francisco
Queenie Chen
Associate, Palo Alto
Lucy Bauer
Associate, Seattle
Raquel Zepeda
Associate, San Francisco
Rick Jantz
Associate, Santa Monica
Leo Spicer-Phelps
Partner, London
Nicollette R. Kirby
Associate, Washington, DC
Breanna Qin
Associate, Palo Alto
Gary Warren Hunt III
Associate, Washington, DC

Related Practices & Industries

Avid Bioservices Announces $1.1 Billion Acquisition by GHO Capital Partners and Ampersand Capital Partners

November 6, 2024

Cooley advised Avid Bioservices (Nasdaq: CDMO), a dedicated biologics contract development and manufacturing organization (CDMO) working to improve patient lives by providing high quality development and manufacturing services to biotechnology and pharmaceutical companies, on its definitive merger agreement to be acquired by funds managed by GHO Capital Partners and Ampersand Capital Partners in an all-cash transaction valued at approximately $1.1 billion.

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Related contacts

Bill Sorabella
Partner, New York
Matthew D. Silverman
Special Counsel, Santa Monica
Natalie D. Vernon
Associate, Colorado
Sarah Buchik
Associate, New York
Patrick Reed
Associate, Palo Alto
Alexis Johnson
Associate, Boston
David Silverman
Partner, New York
Baasit Bhutta
Associate, Colorado
Barbara Mirza
Partner, Santa Monica
Austin Holt
Partner, Santa Monica
Tony P. Guan
Associate, Santa Monica
Howard Morse
Senior Counsel, Washington, DC
Kathy O'Neill
Partner, Washington, DC
Julia R. Brinton
Special Counsel, Washington, DC
Phil Mitchell
Partner, New York
Natasha Leskovsek
Of Counsel, Washington, DC
Wyatt Kernell
Associate, Colorado
Elizabeth Caruso
Associate, New York
Sarah Miller
Associate, New York
Eileen Marshall
Partner, Washington, DC
Todd Gluth
Partner, San Diego
Calvin Lee
Associate, New York
Christophe Beauduin
Partner, New York
Charity Williams
Partner, San Diego
Jameson Davis
Associate, Boston
Koji Fukumura
Partner, San Diego
Peter Adams
Partner, San Diego
Michael Egan
Partner, Washington, DC
Gary Warren Hunt III
Associate, Washington, DC
Ellie Seber
Partner, Santa Monica
Alexandra Leavy
Associate, New York
Timothy Nguyen
Special Counsel, San Francisco
Justin Kisner
Special Counsel, Palo Alto
Christopher Kimball
Partner, Washington, DC
Shelby Saunders
Associate, New York
Ross Eberly
Partner, Santa Monica
Joshua Elefant
Associate, Palo Alto
Alanna B Zuchelli
Special Counsel, Reston
Leanne Andrepont
Senior Trademark Paralegal
Megan Boss
Senior Paralegal , Boston

Related Practices & Industries

Tempus Announces $600 Million Acquisition of Ambry Genetics

November 4, 2024

Cooley advised Tempus AI (Nasdaq: TEM), a technology company advancing precision medicine through the practical application of artificial intelligence in healthcare, on its agreement to acquire Ambry Genetics, a company focusing on genetic testing that aims to improve health by understanding the relationship between genetics and disease.

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Related contacts

Erin J. Kirchner
Partner, Chicago
Richard E. Ginsberg
Partner, Chicago
Christina T. Roupas
Partner in Charge – Chicago, Chicago
Courtney M.W. Tygesson
Partner, Chicago
Michael Tollini
Partner, Washington, DC
Lindsey O'Crump
Associate, Washington, DC
Addison Pierce
Partner, Chicago
Ariane A. Andrade
Partner, Chicago
Steve Flores
Partner, Chicago
Todd Gluth
Partner, San Diego
Christopher Kimball
Partner, Washington, DC
Phil Mitchell
Partner, New York
Howard Morse
Senior Counsel, Washington, DC
Sonia Nath
Partner, Washington, DC
David Navetta
Partner, Colorado
Kathy O'Neill
Partner, Washington, DC
Nyron J. Persaud
Partner, New York
Aaron Pomeroy
Partner, Colorado
Dr. Madhuri Roy
Partner, Palo Alto
Michelle Garcia Schulman
Partner, Reston
Rachel Thorn
Partner, New York
Ryan Vann
Partner, Chicago
Susan Piascik Christoff
Special Counsel, Washington, DC
Son Nguyen
Special Counsel, Washington, DC
Randy Sabett
Special Counsel, Washington, DC
Stella Sarma
Partner, Brussels
Grant Schweikert
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Xander Lee
Partner, Santa Monica
Mateus Kaba Aboud
Associate, Chicago
Karun Ahuja
Special Counsel, Chicago
Tiffany Allen
Associate, Palo Alto
Elizabeth Caruso
Associate, New York
Umer Chaudhry
Associate, Washington, DC
Adrienne Beaudoin Deshmukh
Associate, Reston
Mari Dugas
Associate, Washington, DC
Carly E. Gibbons
Associate, Chicago
Jose Luis Gonzalez
Associate, Palo Alto
Charles Haley
Partner, Palo Alto
Kelley Harrington
Associate, Chicago
Nathaniel Hearn Jr.
Associate, Chicago
Kyle Hess
Associate, New York
Cameron Irwin
Associate, Chicago
Rick Jantz
Associate, Santa Monica
Patrick O. Johnson
Associate, Boston
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Kathy O'Neill is incredibly analytical.

Chambers USA, 2024

Kathy is an outstanding lawyer. She has great judgment.

Chambers USA, 2024

Admissions and credentials

New York

Pennsylvania

District of Columbia

Rankings and accolades

Chambers USA: Antitrust – District of Columbia (2024)

Women@Competition: 40 in their 40s Notable Women Competition Professionals in Europe, the Americas and Africa (2019)

Global Competition Review: Women in Antitrust award (2016)

DOJ Antitrust Division: Assistant Attorney General Award for outstanding contributions to enforcement matters (eight-time winner)