Adrienne A. Harris is Of Counsel and Policy Advisor to Sullivan & Cromwell, and a member of the Firm’s Financial Services Group. Her practice focuses on advising financial services firms on diverse regulatory and policy issues, as well as on complex litigation and enforcement matters.

Adrienne has held government positions at the state and federal level. Prior to re-joining S&C, where she began her legal career, Adrienne was the longest-serving Superintendent of the New York State Department of Financial Services (2021-2025). During her tenure, Adrienne was a member of the Financial Stability Oversight Council, chaired by Treasury Secretary Janet Yellen—a post to which she was elected by her fellow state banking regulators; a member of the Board of Directors of the Conference of State Banking Supervisors; and a member of the National Association of Insurance Commissioners.

Adrienne also served as a Senior Advisor to the Deputy Secretary of the U.S. Treasury Department and Special Assistant to President Obama for Economic Policy at the White House National Economic Council. Her portfolio included financial reform, financial technology, cyber security, consumer protection, and housing finance. At the White House, she spearheaded the development of the Administration’s fintech strategy, establishing and chairing both the Interagency Fintech Working Group and the Administration’s Distributed Ledger Technology Task Force.

Adrienne also has private practice and academic experience, having held roles as a founding executive at DOMA, an artificial intelligence-based insurtech company based in San Francisco; Professor of the Practice and Faculty Co-Director at the Gerald R. Ford School of Public Policy's Center on Finance, Law and Policy at the University of Michigan; early- and growth-stage investor and advisor; and a Senior Advisor at the Brunswick Group in Washington, D.C.