Denver Dunn focuses his legal practice on complex commercial litigation, according to Sidley Austin LLP.
His work involves a variety of high-stakes legal matters, including civil antitrust disputes, consumer class actions, and securities litigation. He represents a diverse client base that includes financial institutions, investment managers, private equity firms, and both public and private companies.
Dunn has extensive experience in the financial services sector. His litigation expertise in this area includes matters concerning the fiduciary duties of financial advisers and disputes involving fraudulent transfer claims.
Beyond direct litigation, Dunn provides counsel on the antitrust implications of mergers and acquisitions. He represents companies during merger reviews and in cartel investigations conducted by both international and U.S. competition authorities.
The scope of his practice extends across several critical sectors, specifically the technology, healthcare, and pharmaceutical industries.

Dunn’s professional foundation includes academic distinctions from Columbia Law School. During his time there, he served as a staff editor for the Columbia Journal of Transnational Law and held the position of vice president of Columbia OutLaws.
His academic record includes being named a Richard Paul Richman Fellow in 2017 and a Harlan Fiske Stone Scholar in 2018.
Before entering private practice, Dunn gained practical experience through various judicial and legal roles. He served as a judicial extern to Judge Raymond J. Lohier, Jr. of the U.S. Court of Appeals for the Second Circuit. He also held externships with The Legal Aid Society and The Bronx Defenders.