Bill Bay represents major corporations in high-stakes litigation nationally. He has served at the forefront of leadership in the legal profession as a past president of the American Bar Association.

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 has long been an active leader in the American Bar Association and assumed the role of president in 2024-25. 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 currently serves 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.