Sarah Sellers

Partner
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I partner with public company boards and management teams to help them execute business strategies, meet objectives, and navigate the securities and corporate governance framework.

Experience

Eagle Pharmaceuticals’ Cooperation Agreement With Nantahala Capital Management

August 28, 2025

Cooley advised Eagle Pharmaceuticals, a fully integrated pharmaceutical company with research and development, clinical, manufacturing and commercial expertise, on its cooperation agreement with Nantahala Capital Management, a holder of approximately 38% of Eagle’s outstanding shares.

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Bill Roegge
Partner, New York
Sarah Sellers
Partner, New York
Marc Recht
Partner, Boston
Pat O'Connell
Associate, New York
Asa Henin
Partner, San Diego
Paul Alexander
Associate, Washington, DC
Nathan Baum
Special Counsel, New York
Luke Cadigan
Partner in Charge – Boston, Boston
Tijana Brien
Partner, Palo Alto
Ariane A. Andrade
Partner, Chicago

Related Practices & Industries

Group14 Technologies Closes $463 Million Series D and Acquisition of BAM Factory

August 20, 2025

Cooley advised Group14 Technologies, a global leader in advanced silicon battery materials, on the close of its $463 million Series D financing and acquisition of its joint venture with SK, Inc.

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Alan Hambelton
Partner, Seattle
Phoebe Huang
Associate, Seattle
Millie Heuer
Associate, Seattle
Sharon Connaughton
Special Counsel, Washington, DC
Sarah Oliai
Associate, Washington, DC
Kevin King
Partner, Washington, DC
Lucy Bauer
Associate, Seattle
Christopher Kimball
Partner, Washington, DC
Sarah Sellers
Partner, New York
Brandon Lefebvre
Quantitative Analyst, Boston
Brian Woodard
Paralegal Specialist, Seattle
Nick Davis
Partner in Charge – Seattle, Seattle
Andrea Bromfeld
Special Counsel, New York
Andrew Epstein
Special Counsel, Seattle
Karen Tsai
Special Counsel, Washington, DC
Julie Wicklund
Special Counsel, Palo Alto
Alice C. Hu
Associate, San Francisco

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Y-mAbs Therapeutics Agrees to Acquisition by SERB Pharmaceuticals

August 5, 2025

Cooley advised Y-mAbs Therapeutics, a commercial-stage biopharmaceutical company focused on the development and commercialization of antibody-based therapeutics for the treatment of cancer, on its definitive merger agreement with SERB Pharmaceuticals. Under the agreement, SERB will acquire Y-mAbs, including its lead commercial oncology asset, DANYELZA, in an all-cash transaction representing an equity value of approximately $412 million.

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Related contacts

Bill Sorabella
Partner, New York
Bill Roegge
Partner, New York
Div Gupta
Partner, New York
Sarah Sellers
Partner, New York
Christophe Beauduin
Partner, New York
Megan Browdie
Partner, Washington, DC
Brad Goldberg
Partner, New York
Christopher Kimball
Partner, Washington, DC
Eileen Marshall
Partner, Washington, DC
Darah Protas
Partner, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Julia Kim
Special Counsel, New York
Justin Kisner
Special Counsel, San Diego
MaryBeth Shreiner
Special Counsel, Reston
Karen Tsai
Special Counsel, Washington, DC
Amanda Weiss
Special Counsel, New York
Rajdeep Roger Bains
Associate, San Diego
Norma Chayo Dichi
Associate, Washington, DC
Sharon Davidov
Associate, New York
Athina Gaki
Associate, Brussels
Kyle Hess
Associate, New York
Katie Kaufman
Associate, Boston
Nicollette R. Kirby
Associate, Washington, DC
Arda Can Tekin
Associate, London
Shaun (Tianjie) Wang
Associate, New York

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TriSalus Life Sciences Completes Merger With MedTech Acquisition Corporation

August 16, 2023

Cooley advised TriSalus Life Sciences, an oncology company with a focus on treatments for patients with liver and pancreatic tumors, on its merger with MedTech Acquisition Corporation.

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Matt Browne
Partner, San Diego
Rama Padmanabhan
Partner, San Diego
Rajdeep Roger Bains
Associate, San Diego
Alexander Gefter
Associate, Santa Monica
Brett Dovman
Associate, San Diego
Pitrina Gilger
Associate, San Diego
Carlos Ramirez
Partner, San Diego
Mischi a Marca
Partner, San Francisco
Matthew S. Scarano
Associate, San Diego
Margaret Barreto
Associate, San Francisco
Jeffrey J. Tolin
Partner, New York
Patrick Sharma
Associate, Santa Monica
Alessandra Murata
Partner, Palo Alto
Ryan Montgomery
Partner, Boston
Sharon Connaughton
Special Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Natasha Leskovsek
Of Counsel, Washington, DC
Phil Mitchell
Partner, New York
Francis Wheeler
Senior Counsel, Colorado
Howard Morse
Senior Counsel, Washington, DC
Madison (JJ) Meng
Associate, San Francisco
Sarah Sellers
Partner, New York
Vince Sampson
Special Counsel, Washington, DC
Darren DeStefano
Partner, Reston
Darren DeStefano
Partner, Reston
Charity Williams
Partner, San Diego
Grady Chang
Associate, Santa Monica
Ross Eberly
Partner, Santa Monica
Kate Walther
Paralegal Specialist, San Diego

Related Practices & Industries

CinCor Pharma to Sell to AstraZeneca for Approximately $1.8 Billion

January 10, 2023

Cooley advised CinCor Pharma, a clinical-stage biopharmaceutical company, on its definitive agreement to be acquired by AstraZeneca. M&A partners Rama Padmanabhan and Rowook Park and corporate partners Div Gupta and Sarah Sellers led the Cooley team.

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Related contacts

Rowook Park
Partner, San Diego
Rama Padmanabhan
Partner, San Diego
Div Gupta
Partner, New York
Sarah Sellers
Partner, New York
Christophe Beauduin
Partner, New York
Izzy Lubarsky
Partner, New York
Alessandra Murata
Partner, Palo Alto
Megan Drill
Associate, San Diego
Trey Reilly
Associate, New York
Amy Hallman Rice
Special Counsel, San Diego
Howard Morse
Senior Counsel, Washington, DC
Sharon Connaughton
Special Counsel, Washington, DC
Rubin Waranch
Associate, Colorado
Natasha Leskovsek
Of Counsel, Washington, DC
Phil Mitchell
Partner, New York
Charity Williams
Partner, San Diego
MaryBeth Shreiner
Special Counsel, Reston
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Patrick Sharma
Associate, Santa Monica
Karen Tsai
Special Counsel, Washington, DC
Ryan Sansom
Partner, Boston
Stephanie Gentile
Partner, New York
Christopher Kimball
Partner, Washington, DC
Nyron J. Persaud
Partner, New York
Helenanne Connolly
Partner, Reston
Stella Sarma
Partner, Brussels
Stella Sarma
Partner, Brussels
Stacey A. Bradford
Special Counsel, Washington, DC
Dillon Martinson
Special Counsel, Washington, DC
Lindsey O'Crump
Associate, Washington, DC
Barry Kuang
Associate, Boston
Rajdeep Roger Bains
Associate, San Diego
Alexander Fullman
Associate, New York
Amanda Gonzalez Burton
Associate, New York
Sarah Curry
Associate, New York
Carly Mitchell
Partner, Washington, DC
Wyatt Kernell
Associate, Colorado
Allison Kutner
Associate, New York

Related Practices & Industries

Admissions and credentials

New York

Rankings and accolades

The Legal 500 US: Corporate Governance (2025)

Memberships and affiliations

New York State Bar Association

American Bar Association (ABA)

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