FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * SULLIVAN FRANK C   2. Issuer Name and Ticker or Trading Symbol RPM INTERNATIONAL INC/DE/ [RPM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman and CEO (Last) (First) (Middle) 2628 PEARL ROAD, P.O. BOX 777 3. Date of Earliest Transaction (Month/Day/Year) 05/31/2018 (Street) MEDINA, OH 44258 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.01 par value 05/31/2018   F(1)   5,060 D $ 49.5 1,018,532 (2) D   Common Stock, $0.01 par value               15,000 I By LLC Common Stock, $0.01 par value               12,405 I By Thomas C. and Sandra S. Sullivan Irrevocable Grandchildren's Trust dated May 8, 2006 Common Stock, $0.01 par value               9,630 I By Thomas C. Sullivan Irrevocable Trust FBO Frank C. Sullivan 10/26/12 Common Stock, $0.01 par value               3,000 I As custodian for son Common Stock, $0.01 par value               4,510 (3) I By 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Stock Appreciation Rights

(4)

(5)

(5)

Common Stock

1,400,000

1,400,000 (5)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SULLIVAN FRANK C 2628 PEARL ROAD P.O. BOX 777 MEDINA, OH 44258	X		Chairman and CEO

Signatures

/s/ Frank C. Sullivan, by Gregory J. Dziak, his attorney-in-fact pursuant to Power of Attorney dated September 26, 2013 on file with the Commission		06/04/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	On May 31, 2018, 11,408 shares of Common Stock issued to the reporting person pursuant to the 2007 RPM International Inc. Restricted Stock Plan (the "Plan") vested. In accordance with the terms of the Plan, the reporting person disposed of 5,060 shares back to the issuer to satisfy tax obligations of the reporting person.
(2)	Includes an aggregate of 24,577 shares of Common Stock issued pursuant to the 2007 RPM International Inc. Restricted Stock Plan, 28,467 vested restricted shares of Common Stock held in escrow in the 1997 RPM International Inc. Restricted Stock Plan and 84,489 vested restricted shares of Common Stock held in escrow in the 2007 RPM International Inc. Restricted Stock Plan until the reporting persons' retirement, 125,000 shares of Common Stock, issued as Performance Earned Restricted Stock, pursuant to the RPM International Inc. 2014 Omnibus Equity and Incentive Plan, and 80,000 shares of Common Stock, issued as Performance Contingent Restricted Stock, pursuant to the RPM International Inc. 2014 Omnibus Equity and Incentive Plan.
(3)	Approximate number of shares held as of May 31, 2018 in the account of the reporting person by Wachovia Bank, N.A., as Trustee of the RPM International Inc. 401(k) Trust and Plan, as amended.
(4)	No transaction is being reported on this line. Reported on a previously filed Form 3, Form 4, or Form 5.
(5)	Stock Appreciation Rights granted pursuant to the RPM International Inc. 2004 and 2014 Omnibus Equity and Incentive Plans 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 2011 and 2017 and expire 10 years from the date of grant.

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