RPM will host its 2023 annual meeting of stockholders virtually. The annual meeting will be held via webcast at 1:30 p.m. ET on Thursday, October 5, 2023.

Virtual Annual Meeting Details:

• WHEN: Thursday, October 5, 2023, at 1:30 p.m. ET
• WHO: Stockholders at the close of business on the record date of August 11, 2023
• WHERE: Via live internet webcast at www.virtualshareholdermeeting.com/RPM2023
• ACCESS: Your unique control number, provided on your proxy card, is required
• PARTICIPATION: Stockholders can vote and submit questions during the live webcast
• REPLAY: Available until October 4, 2024 at www.virtualshareholdermeeting.com/RPM2023
• QUESTIONS?: Call Innisfree M&A Incorporated at (877) 750-2689 (Toll Free)