Simpson Thacher & Bartlett LLP

Litigation/Antitrust

Preston Miller, a Partner in the Firm’s Washington, D.C. office, focuses his practice on antitrust and competition law. With a particular emphasis on merger review, he has extensive experience obtaining regulatory clearances from domestic and international competition authorities for high-profile, often cross-border, transactions across a wide variety of industries. In addition to securing regulatory approvals, Preston also has experience defending transactions in court, including successfully litigating against the Department of Justice in their challenge to the UnitedHealth Group / Change Healthcare transaction, as well as acting as a key member of the trial team in the FTC’s challenge to the Staples / Office Depot transaction. Preston represents a mix of both private equity and corporate clients, including in a wide range of sectors such as industrial, automotive, life sciences/healthcare, defense, retail, semiconductors, and more.

Partner, Simpson Thacher.

American Bar Association.

Georgetown University Law Center (2012 J.D. magna cum laude; Order of the Coif; Pro Bono Pledge Honoree); University of Maryland (2007 B.S.; B.A., Dean’s List).