SEC Form 4 · accession 0001193125-26-310414

· RPM

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

Reporting owner

Officer — Chairman and CEO · Director

Period of report

Jul 19, 2026

Accepted (ET)

Jul 21, 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^F2	Jul 19, 2026	F	3,813	$105.08	D	1,013,277	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^F3	holding	—	—		—	5,247	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^F5,F4	—	holding	—	—	—	—	—	Common Stock	1,231,300	1,231,300	D

F1On July 19, 2026, a portion of the Reporting Person's Performance Stock Units previously granted in 2023 pursuant to the Plan vested. In accordance with the Plan, the Reporting Person disposed of 3,813 shares of Common Stock back to the Issuer to satisfy tax obligations of the Reporting Person.
F2Includes 23,970 shares of Common Stock, issued as Performance Earned Restricted Stock.
F3Approximate number of shares of Common Stock held as of July 19, 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.
F4No transaction being reported on this line. Reported on a previously filed Form 3, Form 4 or Form 5.
F5Stock 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 2019 and 2026 and expire 10 years from the date of grant.