144 0001892453 XXXXXXXX LIVE 0000110621 RPM International Inc. 001-14187 2628 PEARL ROAD MEDINA OH 44256 330-273-5090 Laroche Michael J. Officer Common Stock, $0.01 par value Northwestern Mutual Investment Services

720 E. Wisconsin Ave. Milwaukee WI 53202

3615 463154 128701945 10/31/2024 NYSE Common Stock, $0.01 par value 10/07/2022 Performance Share Distribution RPM International Inc. N 841 10/07/2022 Equity Award Common Stock, $0.01 par value 07/23/2020 Performance Share Distribution RPM International Inc. N 1091 07/23/2020 Equity Award Common Stock, $0.01 par value 07/25/2023 Performance Share Distribution RPM International Inc. N 1683 07/25/2023 Equity Award Y 10/31/2024 /s/ Gregory S. Harvey, as Attorney-in-Fact for Michael J. Laroche