About Bill

Bill’s practice focuses on the representation of principals in mergers and acquisitions transactions, primarily involving public companies. He regularly represents corporate buyers and sellers, private equity funds, special purpose acquisition companies (SPACs), boards of directors and special committees in the purchase, merger and sale of companies and businesses, divisional carve outs, and the formation and dissolution of joint ventures. He also frequently represents financial advisers in similar transactions and advises clients on corporate governance matters, proxy contests and anti-takeover measures.

View full bio

Experience

Tourmaline Bio Enters Into Agreement to be Acquired by Novartis

Tourmaline Bio Enters Into Agreement to be Acquired by Novartis

September 9, 2025

Read more

Related contacts

Bill Sorabella
Partner, New York
Brandon W. Fenn
Partner, New York
Natalie D. Vernon
Associate, Colorado
Sangitha Palaniappa
Associate, Palo Alto
Katherine Denby
Special Counsel, Washington, DC
Pengli Li
Associate, Boston
Nyron J. Persaud
Partner, New York
Megan Browdie
Partner, Washington, DC
Anne Luquette
Associate, San Francisco
Brittany Sanok
Associate, New York
Annie Froehlich
Partner, Washington, DC
Stephanie Gentile
Partner, New York
Austin Holt
Partner, Santa Monica
Christopher Kimball
Partner, Washington, DC
Eileen Marshall
Partner, Washington, DC
Carly Mitchell
Partner, Washington, DC
Phil Mitchell
Partner, New York
Ryan Montgomery
Partner, Boston
John Paul Oleksiuk
Partner, New York
Alan W. Tamarelli
Partner, New York
Dr. Michael Tuscan
Partner, Washington, DC
Mark Windfeld-Hansen
Senior Counsel, Palo Alto
Andrew Epstein
Special Counsel, Seattle
J. Brian Stalter
Special Counsel, New York

Related Practices & Industries

Mergers and Acquisitions
Capital Markets
Biotechnology
Compensation and Benefits
Life Sciences Corporate Partnering and Licensing
Antitrust and Competition
Labor and Employment
Cyber/Data/Privacy
Tax
Trademark, Copyright and Advertising
Life Sciences and Healthcare Regulatory
Life Sciences
Commercial Litigation
Patent Counseling and Prosecution
Intellectual Property

Y-mAbs Therapeutics Agrees to Acquisition by SERB Pharmaceuticals

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.

Read more

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
Dayne Brown
Associate, New York
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
Christopher Nickas
Associate, New York
Arda Can Tekin
Associate, London
Shaun (Tianjie) Wang
Associate, New York

Related Practices & Industries

Mergers and Acquisitions
Capital Markets
Biotechnology
Healthcare
Life Sciences
Life Sciences Corporate Partnering and Licensing
Antitrust and Competition
Labor and Employment
Tax

Movable Ink to Be Acquired by STG

Movable Ink to Be Acquired by STG

June 26, 2025

Cooley advised Movable Ink, an artificial intelligence-powered personalized content platform, on its definitive agreement to be acquired by STG. The transaction is expected to close in July 2025.

Read more

Related contacts

Adam Dinow
Partner, New York
Bill Sorabella
Partner, New York
Bill Roegge
Partner, New York
Nathan Baum
Special Counsel, New York
Robert Warshaw
Associate, New York
Kyle Hess
Associate, New York
Ethan Ebert-Zavos
Associate, New York
Patrick Flanagan
Partner, New York
Len Jacoby
Partner, New York
Eileen Marshall
Partner, Washington, DC
Kristen Mathews
Partner, New York
Jeremy Morrison
Partner, Washington, DC
John Paul Oleksiuk
Partner, New York
Nyron J. Persaud
Partner, New York
Scott Talbot
Senior Counsel, Reston
Julia R. Brinton
Special Counsel, Washington, DC
David Hopkins
Special Counsel, Colorado
Andrew Linch
Special Counsel, London
Michael Bruno
Associate, New York
Amanda Gonzalez Burton
Associate, New York
Tony P. Guan
Associate, Santa Monica
Nathaniel Hearn Jr.
Associate, Chicago
Bomin Kim
Associate, New York
Richard Koch
Associate, Washington, DC
Allison Kutner
Associate, New York
Alexandra Leavy
Associate, New York
Amanda Pacheco
Associate, Palo Alto
Rubin Waranch
Associate, Colorado
Colleen R. Wellington-Caban
Associate, Washington, DC
Andy Zachrich
Associate, San Francisco
Patricia Myers
Paralegal Specialist, Colorado
Jill Simon
Senior Paralegal, New York
Kevin Gurley
Quantitative Analyst, New York

Related Practices & Industries

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

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

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.

Read more

Related contacts

Bill Sorabella
Partner, New York
Natalie D. Vernon
Associate, Colorado
Sarah Buchik
Associate, New York
Patrick Reed
Associate, Palo Alto
Alexis Johnson
Associate, Boston
David Silverman
Partner, New York
Barbara Mirza
Partner, Santa Monica
Austin Holt
Partner, Santa Monica
Tony P. Guan
Associate, Santa Monica
Howard Morse
Senior Counsel, Washington, DC
Julia R. Brinton
Special Counsel, Washington, DC
Phil Mitchell
Partner, New York
Natasha Leskovsek
Of Counsel, Washington, DC
Wyatt Kernell
Associate, Colorado
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
Ellie Seber
Partner, Santa Monica
Alexandra Leavy
Associate, New York
Timothy Nguyen
Special Counsel, San Francisco
Justin Kisner
Special Counsel, San Diego
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

Mergers and Acquisitions
Private Equity
Life Sciences
Compensation and Benefits
Antitrust and Competition
Life Sciences and Healthcare Regulatory
CooleyREG
Tax
Life Sciences Corporate Partnering and Licensing
Cyber/Data/Privacy
Commercial Litigation
Debt Finance
CFIUS
Labor and Employment

Contentsquare Agrees to Acquire Heap

Contentsquare Agrees to Acquire Heap

September 28, 2023

Cooley advised Contentsquare, a global leader in digital experience analytics, on its definitive agreement to acquire Heap, an analytics platform.

Read more

Related contacts

Stephane Levy
Partner, New York
Bill Sorabella
Partner, New York
Izzy Lubarsky
Partner, New York

Related Practices & Industries

Mergers and Acquisitions
Artificial Intelligence
France
View more

Admissions and credentials

New York

Rankings and accolades

  • Chambers USA: America's Leading Lawyers for Business in Corporate/M&A
  • The Legal 500 US: M&A: mega-deals ($1 billion+)
  • The American Lawyer: Dealmakers of the Year (2010 and 2012)
  • Law360: Rising Star and M&A MVP
  • Super Lawyers: New York Rising Star