Frederick R. Nance's Common Stock Sale and Power of Attorney

Frederick R. Nance, a director of RPM International Inc., sold 1,000 shares of common stock on August 6, 2025, at an average weighted price of $119.36 per share. Following this transaction, Nance owns 7,394 shares. The sale was reported in a Form 4 filing with the SEC. Additionally, Nance executed a Power of Attorney on July 30, 2025, appointing Tracy D. Crandall, Gregory S. Harvey, Arthur C. Hall III, and Gregory J. Dziak as his attorneys-in-fact to handle SEC filings and related matters on his behalf. This Power of Attorney remains in effect until Nance is no longer required to file Forms 3, 4, 5, or 144.