Experience

StubHub Announces $800 Million IPO

September 18, 2025

Cooley advised the underwriters of StubHub Holdings, a global secondary ticketing marketplace for live events, in connection with StubHub’s $800 million initial public offering (IPO).

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David Peinsipp
Partner, San Francisco
Kristin VanderPas
Partner, San Francisco
Denny Won
Partner, San Francisco
Shannon Eagan
Partner in Charge – Palo Alto, Palo Alto
Adam Fleisher
Partner, Washington, DC
Charlie Kim
Partner, San Diego
Kevin King
Partner, Washington, DC
Xander Lee
Partner, Santa Monica
James Maton
Co-Partner in Charge – London, London
Barbara Mirza
Partner, Santa Monica
John Paul Oleksiuk
Partner, New York
Obrea Poindexter
Partner, Washington, DC
Francis Wheeler
Senior Counsel, Colorado
Chris Chynoweth
Special Counsel, New York
Sharon Connaughton
Special Counsel, Washington, DC
David Hopkins
Special Counsel, Colorado
Andrew Linch
Special Counsel, London
Kimberly Nguyen
Special Counsel, Reston
Randy Sabett
Special Counsel, Washington, DC
Karen Tsai
Special Counsel, Washington, DC
Peter Burns
Of Counsel, Palo Alto
Chelsea André
Associate, Colorado
Jasmine A. Banks
Associate, Washington, DC
Peter A. Haddad
Associate, San Diego
David D. Kim
Associate, San Francisco
Dana N. Levin
Associate, New York
Isabelle Mackesey
Associate, Reston
Liz Paisner
Associate, New York
Erica Russell
Associate, San Francisco
Valerie Sapozhnikova
Associate, Los Angeles
Patrick Sharma
Associate, Santa Monica
Ryan Sim
Associate, San Francisco
Arda Can Tekin
Associate, London
Lawrence Traylor
Associate, Santa Monica
Genevieve Lim Urban
Associate, Seattle
Veronica Cortes
Paralegal Specialist, New York
Melissa Eskola
Paralegal Specialist, Reston
Margie Murphy
Paralegal Specialist, New York
Douglas Lyles
Senior Research Services & Access Analyst

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CalypsoAI to Be Acquired by F5

September 17, 2025

Cooley advised CalypsoAI, an adaptive artificial intelligence security platform that empowers enterprises to innovate safely, on its acquisition by F5, a global leader in delivering and securing every app and application programming interface.

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Jon Gavenman
Partner, Palo Alto
Sepideh Mousakhani
Partner, Palo Alto
Kealan Santistevan
Associate, Palo Alto
Timothy Shapiro
Partner, Palo Alto
Caitlin Courtney
Partner, Palo Alto
Jeff Goldman
Special Counsel, Palo Alto
Alex Maki
Associate, Palo Alto
Sophie Bucci
Associate, Santa Monica
Calvin Lee
Associate, New York
David Fletcher
Partner, Washington, DC
Kevin King
Partner, Washington, DC
Bill Galliani
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Linch
Special Counsel, London
MaryBeth Shreiner
Special Counsel, Reston
Karen Tsai
Special Counsel, Washington, DC
Umer Chaudhry
Associate, Washington, DC
Tucker Cochenour
Associate, Palo Alto
Mark Cornillez-Ty
Associate, Los Angeles
Mari Dugas
Associate, Washington, DC
Joshua Elefant
Associate, Palo Alto
Rick Jantz
Associate, Santa Monica
Emily Mok
Associate, Reston
Michelle Peleg
Associate, San Francisco
Anna Anderson
Paralegal Specialist, London
Patrick O. Johnson
Associate, Boston
Jake Ironfield
Transactional Quantitative Analyst, New York

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LB Pharmaceuticals Announces $285 Million Upsized IPO

September 12, 2025

Cooley advised LB Pharmaceuticals, a clinical-stage biopharmaceutical company developing novel therapies for the treatment of neuropsychiatric diseases including schizophrenia, on its $285 million upsized initial public offering (IPO).

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Brandon W. Fenn
Partner, New York
Div Gupta
Partner, New York
Marc Recht
Partner, Boston
Minkyu Park
Special Counsel, New York
Denny Xu
Associate, Boston
Danbi Kim
Associate, Boston
Ariane A. Andrade
Partner, Chicago
Nathaniel Hearn Jr.
Associate, Chicago
Karun Ahuja
Special Counsel, Chicago
Brandon Lefebvre
Quantitative Analyst, Boston
Stephanie Gentile
Partner, New York
Austin Holt
Partner, Santa Monica
Eileen Marshall
Partner, Washington, DC
Phil Mitchell
Partner, New York
Gerard O'Shea
Partner, New York
David Peinsipp
Partner, San Francisco
Ryan Vann
Partner, Chicago
Francis Wheeler
Senior Counsel, Colorado
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Jessica Koffel
Special Counsel, Brussels
Rebecca Ross
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Chelsea Braun
Associate, Boston
Cara Buchicchio
Associate, New York
David Dalton
Associate, Santa Monica
Vince Flynn
Associate, San Diego
Virat Gupta
Associate, Washington, DC
Wyatt Kernell
Associate, Colorado
Allison Kutner
Associate, New York
Brenna McGuire
Associate, Washington, DC
Sarah Miller
Associate, New York
Jayne M. Munger
Associate, New York
Miles Patton
Associate, New York
Alla Kagan
Paralegal Specialist, San Diego
Cathy Rude
Paralegal Specialist, Boston
Jake Ironfield
Transactional Quantitative Analyst, New York
Brian Mitchell
Transactional Quantitative Analyst, San Diego

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Baseten Secures $150 Million Series D

September 5, 2025

Cooley advised Baseten, a company powering inference for the world’s fastest-growing artificial intelligence products, on its $150 million Series D financing, valuing the company at $2.15 billion.

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Related contacts

Josh Seidenfeld
Partner, Palo Alto
Daniel Y. Lee
Associate, Palo Alto
Alice Wu
Associate, Palo Alto
Sam Thompson
Associate, Santa Monica
Celine Koh
Associate, Palo Alto
Sharon Connaughton
Special Counsel, Washington, DC
John Sellers
Senior Counsel, Palo Alto
Kimberly Nguyen
Special Counsel, Reston
Mari Dugas
Associate, Washington, DC
Melody Van Horn
Senior Paralegal, Palo Alto
Brian Mitchell
Transactional Quantitative Analyst, San Diego

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TBO to Acquire Classic Vacations From the Najafi Companies

September 3, 2025

Cooley advised TBO, a leading global travel distribution platform, on its agreement to acquire Classic Vacations from Arizona-based investment firm, the Najafi Companies.

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Related contacts

Rishab Kumar
Partner, Palo Alto
Patrick Reed
Associate, Palo Alto
Elaine Huang
Associate, Palo Alto
John Clark
Partner, London
Alexandra Leavy
Associate, New York
Michael Bergmann
Partner, Washington, DC
Megan Browdie
Partner, Washington, DC
Caitlin Courtney
Partner, Palo Alto
Ross Eberly
Partner, Santa Monica
Stephanie Gentile
Partner, New York
Christopher Kimball
Partner, Washington, DC
Alessandra Murata
Partner, Palo Alto
John Paul Oleksiuk
Partner, New York
Francis Wheeler
Senior Counsel, Colorado
Stacey A. Bradford
Special Counsel, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Andrew Epstein
Special Counsel, Seattle
Rebecca Ross
Special Counsel, Washington, DC
William Corcoran
Of Counsel, Boston
Margaret Barreto
Associate, San Francisco
Tony P. Guan
Associate, Santa Monica
Nathaniel Hearn Jr.
Associate, Chicago
Jacob R. Lahana
Associate, Santa Monica
Grigor Lynch
Associate, Colorado
Shante Mays
Associate, Reston
Daniel Millard
Associate, London
Edward (Teddy) Nimetz
Associate, New York
Patrick Sharma
Associate, Santa Monica
Christopher Suhler
Associate, Colorado
David H. Zhou
Associate, Palo Alto
Agis Zografos
Associate, London
Margie Murphy
Paralegal Specialist, New York
Patricia Myers
Paralegal Specialist, Colorado

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