Janeen B. Kastner - 31 May 2025 Form 4 Insider Report for RPM INTERNATIONAL INC/DE/ (RPM)

Role: VP Corp. Benefits/Risk Mgmt.
Signature: /s/ Janeen B. Kastner, by Gregory J. Dziak, her attorney-in-fact pursuant to Power of Attorney dated October 9, 2014 on file with the Commission
Issuer symbol: RPM
Transactions as of: 31 May 2025
Net transactions value: -$80,940
Form type: 4
Filing time: 03 Jun 2025, 16:37:30 UTC
Previous filing: 22 Jul 2024
Next filing: 18 Jul 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kastner Janeen B.	VP Corp. Benefits/Risk Mgmt.	2628 PEARL ROAD, MEDINA	/s/ Janeen B. Kastner, by Gregory J. Dziak, her attorney-in-fact pursuant to Power of Attorney dated October 9, 2014 on file with the Commission	03 Jun 2025	0001622407

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	RPM	Common Stock, $0.01 par value	Tax liability	$80,940	-711	-0.58%	$113.84	121,644	31 May 2025	Direct	F1, F2
holding	RPM	Common Stock, $0.01 par value						1,101	31 May 2025	By 401(k) Plan	F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	RPM	Stock Appreciation Rights						204,900	31 May 2025	Common Stock	204,900		Direct	F4, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On May 31, 2025, 2,551 shares of Common Stock issued to the Reporting Person pursuant to the RPM International Inc. 2014 Omnibus Equity and Incentive Plan (the "Plan") vested. In accordance with the terms of the Plan, the Reporting Person disposed of 711 shares back to the issuer to satisfy tax obligations of the Reporting Person.
F2	Includes an aggregate of 6,394 shares of Common Stock issued pursuant to the Plan, 16,121 vested restricted shares of Common Stock held in escrow until the Reporting Person's retirement and 4,570 shares of Common Stock, issued as Performance Earned Restricted Stock pursuant to the Plan.
F3	Approximate number of shares of Common Stock held as of May 31, 2025 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.
F4	No transaction being reported on this line. Reported on a previously filed Form 3, Form 4 or Form 5.
F5	Stock Appreciation Rights granted pursuant to the Plan 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 2016 and 2024 and expire 10 years from the date of grant.