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Bill Bay


St. Louis
314 552 6008 314 552 6008 direct
314 552 7008 fax

Bill Bay represents major corporations in high-stakes litigation nationally.

He achieves favorable results for clients in state and federal courts across the country, and frequently serves as regional or national counsel for clients facing suits and regulatory actions in multiple venues.

An integral member of the legal community, Bill is an active leader in the American Bar Association. In August 2023, Bill was elected as the ABA's president-elect. He served as the 2018-2020 Chair of the ABA House of Delegates, the policymaking body of the association. Bill is also a past Chair of the ABA Section of Litigation, the largest section in the ABA, and a past member of the ABA Board of Governors, serving as the chair of the Board's Finance Committee. He was also selected to be a member of the American Law Institute, the leading independent organization in the United States that works to improve the law. Bill has been selected as chair of multiple statewide commissions, examining critical issues in the practice of law. He previously served as the co-chair of the Supreme Court of Missouri's Commission on Racial and Ethnic Fairness.

Bill's clients vary from major financial institutions, to manufacturers, to post-secondary institutions. He litigates cases on behalf of companies facing high-risk litigation and helps businesses manage and respond to large portfolios of litigation in multiple jurisdictions. These matters include highly complex and document-intensive cases involving breach of contract, fraud, corporate governance, insurance coverage, lost profits, lender liability, and tortious interference. Bill's extensive litigation experience includes insurance coverage cases as well as trust and estate litigation, including issues relating to fiduciary obligations.


Bill Bay Named to Defense POWER List

Thompson Coburn Attorneys Named to Missouri Top 100 Power List

Thompson Coburn Partner Bill Bay Selected as ABA President-Elect

Thompson Coburn’s Bill Bay Identifies Evolution as Critical to American Bar Association’s Future in ABA Journal Interview

Congratulations to our 2021 Best Lawyers ‘Lawyers of the Year’ and ‘Ones to Watch’

Congratulations to our 14 ‘Lawyers of the Year’ for 2019

Bill Bay elected chair of the ABA House of Delegates

Thompson Coburn honors Civil Rights pioneer Frankie Muse Freeman

Bill Bay receives Spurgeon Smithson award

Bill Bay to receive Distinguished Lawyer Award at 2017 Law Day festivities

Missouri Joint Task Force on the Future of the Profession releases 2016 report

Bill Bay named a 2016 ‘Excellence in Law’ award winner by St. Louis Magazine

Congratulations to our 2017 ‘Lawyers of the Year’

Bill Bay elected to American Law Institute’s class of 2016

Bill Bay elected chair of ABA Board of Governors’ Finance Committee

Bill Bay elected to ABA Board of Governors

DirectWomen to host gender pay equity program on April 7-8 in St. Louis

Happy 97th birthday to legal pioneer Frankie Freeman

Bill Bay named co-chair of Joint Commission on Women in the Profession

Bill Bay live-tweets Eric Holder, Hillary Clinton speeches at ABA Annual Meeting

Bill Bay invites Litigation journal readers into ‘The Black Box’

Bill Bay hosts Gideon v. Wainwright anniversary panel, live stream

Bill Bay named Influential Lawyer by Missouri Lawyers Media

19 Thompson Coburn partners named 2013 St. Louis Lawyers of the Year

Bill Bay Elected Chair of the ABA Section of Litigation