Michael Casaburi

Michael Casaburi

Senior Attorney
Michael Casaburi
Washington, DC
+1 202 346 4012

Michael Casaburi is a Senior Attorney in Goodwin’s Antitrust and Competition practice specializing in advising clients on antitrust issues related to mergers and acquisitions, joint ventures, and other collaborations. He has advised clients on all aspects of antitrust issues related to mergers and acquisitions including antitrust filing assessments, antitrust risk assessments, risk-shifting negotiations and agreements, and FTC and DOJ investigations. Michael has advocated on behalf of clients across a broad range of industry sectors before the FTC and DOJ during diverse aspects of merger investigations, developed antitrust compliance programs, and advised on antitrust issues related to competitor collaborations.


Michael’s recent representative experience includes:

  • Poshmark in its acquisition by Naver Corporation for approximately $1.6 billion
  • Uniswap in its acquisition of Genie
  • Mimecast Limited in its acquisition by Permira for approximately $5.8 billion
  • Clique Brands in its sale of Who What Wear to Future Publishing
  • Checkmate Pharmaceuticals in its sale to Regeneron Pharmaceuticals for $250 million
  • Limelight Networks in its acquisition of Yahoo's Edgecast for $300 million
  • Audacious Inquiry in its acquisition by PointClickCare Technologies
  • Halo Technology in its sale to Amphenol Corporation for $175 million
  • Trillium Therapeutics in its acquisition by Pfizer for $2.26 billion

Professional Experience

Before joining Goodwin, Michael practiced antitrust law as an associate in the Antitrust and Intellectual Property Litigation practice at Sidley Austin and was a business strategy consultant at Bain & Company.

While at Boston College Law School, Michael served as Articles Editor for the International and Comparative Law Review. While at New York University School of Law, he worked as an intern at the Federal Trade Commission.

Professional Activities

Michael is a member of the D.C. Bar Association and the ABA Antitrust Section.




New York University School of Law


University of Pennsylvania

Wharton School of Business

(with distinction)


Boston College Law School

(cum laude)

BSNautical Science

U.S. Merchant Marine Academy

(with honors)



  • District of Columbia
  • Illinois