144 0001892453 XXXXXXXX LIVE 0000110621 RPM International Inc. 001-14187 c/o RPM International Inc 2628 Pearl Road Medina OH 44256 330-273-5090 Michael J. Laroche VP, Controller and CAO Common Stock, $0.01 par value Pershing LLC

One Pershing Plaza Jersey City NJ 07399

2593 266353 128957528 08/17/2023 NYSE Common Stock, $0.01 par value 10/01/2021 Performance Share Distribution RPM International Inc. N 786 10/01/2021 Equity Award Common Stock, $0.01 par value 07/18/2022 Performance Share Distribution RPM International Inc. N 1807 07/18/2022 Equity Award Y 08/11/2023 /s/ Gregory S. Harvey, as Attorney-in-Fact for Michael J. Laroche