SEC Form 4 · accession 0001193125-26-340385

· RPM

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chairman and CEO · Director

Period of report

Aug 5, 2026

Accepted (ET)

Aug 7, 2026 · 4:36 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0000110621

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, $0.01 par value	Aug 5, 2026	M	200,000	$62.17	A	1,213,277	D
Common Stock, $0.01 par value	Aug 5, 2026	D	106,529	$116.72	D	1,106,748	D
Common Stock, $0.01 par value^F1	Aug 5, 2026	F	40,753	$116.72	D	1,065,995	D
Common Stock, $0.01 par value	holding	—	—		—	15,600	I	By Thomas C. Sullivan Irrevocable Trust FBO Frank C. Sullivan 10/26/12
Common Stock, $0.01 par value^F2	holding	—	—		—	5,274	I	By 401(k) Plan

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Appreciation Rights^F4,F3	$62.17	Aug 5, 2026	M	200,000	D	—	Jul 18, 2029	Common Stock	200,000	1,031,300	D

F1Includes 23,970 shares of Common Stock, issued as Performance Earned Restricted Stock.
F2Approximate number of shares of Common Stock held as of August 5, 2026 in the account of the Reporting Person by Fidelity Trust Management Company, as Trustee of the RPM International Inc. 401(k) Trust and Plan, as amended.
F3The Stock Appreciation Rights vested on July 18, 2020, 2021, 2022 and 2023.
F4Stock Appreciation Rights granted in exempt transactions under Rule 16b-3. These Stock Appreciation Rights vest in four equal annual installments commencing one year after the date of grant. These Stock Appreciation Rights were granted between 2020 and 2026 and expire 10 years from the date of grant.