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Ryan Russell Kemper, Thompson Coburn

Staff Report//November 13, 2025//

Ryan Russell Kemper

Ryan Russell Kemper, Thompson Coburn

Staff Report//November 13, 2025//

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Partner, St. Louis

Known as a keen problem-solver for his clients, Ryan Kemper is co-chair of Thompson Coburn’s Environmental Law group and serves as lead counsel for clients in multiparty complex litigation, including multiple high-profile superfund cases.

In addition to his regulatory and counseling work on a myriad of environmental issues, he counsels clients on climate, ESG and environmental justice matters.

Kemper is a planning commissioner for the City of O’Fallon, Illinois, and a board member of the St. Clair County Special Emergency Services Association, a non-profit that assists first responders with highly specialized expertise and technical equipment during times of crisis.


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