Sec Form 3 Filing - Boyce Marlena K. @ SHERWIN WILLIAMS CO - 2025-01-01

FORM 3 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 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 Boyce Marlena K. 2. Issuer Name and Ticker or Trading Symbol SHERWIN WILLIAMS CO [ SHW] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP - Human Resources (Last) (First) (Middle) 101 WEST PROSPECT AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2025 (Street) CLEVELAND, OH44115 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Phantom Stock Units $ 0 ( 1 ) ( 1 ) Common Stock 342.21 ( 2 ) D Employee Stock Option (Right to Buy) $ 136.85 ( 3 ) 10/16/2028 Common Stock 678 D Employee Stock Option (Right to Buy) $ 186.85 ( 4 ) 10/15/2029 Common Stock 83 D Employee Stock Option (Right to Buy) $ 227.05 ( 5 ) 10/19/2030 Common Stock 765 D Employee Stock Option (Right to Buy) $ 295.83 ( 6 ) 10/17/2031 Common Stock 1,055 D Employee Stock Option (Right to Buy) $ 215.08 ( 7 ) 10/17/2032 Common Stock 1,465 D Employee Stock Option (Right to Buy) $ 248.57 ( 8 ) 10/12/2033 Common Stock 1,350 D Employee Stock Option (Right to Buy) $ 388.57 ( 9 ) 10/15/2034 Common Stock 1,150 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Boyce Marlena K. 101 WEST PROSPECT AVENUE CLEVELAND, OH44115 SVP - Human Resources Signatures Stephen J. Perisutti, Attorney-in-fact 01/08/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These phantom stock units were acquired by the Reporting Person (in exempt transactions) under the Company's 2005 Deferred Compensation Savings and Pension Equalization Plan. ( 2 )Represents the number of phantom stock units attributable to the Reporting Person's participation in the 2005 Deferred Compensation Savings and Pension Equalization Plan, per the administrator's 1/1/2025 statement. Each phantom stock unit is the economic equivalent of one share of common stock. The phantom stock units become payable in cash generally upon the Reporting Person's retirement or other termination of service. The phantom stock units have dividend equivalent rights. ( 3 )These options were granted on October 17, 2018, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of April 19, 2017). The options vested annually in three substantially equal installments commencing October 17, 2019. ( 4 )These options were granted on October 16, 2019, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of April 19, 2017). The options vested annually in three substantially equal installments commencing October 16, 2020. ( 5 )These options were granted on October 20, 2020, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of April 19, 2017). The options vested annually in three substantially equal installments commencing October 20, 2021. ( 6 )These options were granted on October 18, 2021, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of April 19, 2017). The options vested annually in three substantially equal installments commencing October 18, 2022. ( 7 )These options were granted on October 18, 2022, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of April 19, 2017). The options vest annually in three substantially equal installments commencing October 18, 2023, subject to vesting conditions. ( 8 )These options were granted on October 13, 2023, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of October 13, 2023). The options vest annually in three substantially equal installments commencing October 13, 2024, subject to vesting conditions. ( 9 )These options were granted on October 15, 2024, pursuant to the terms of a stock option agreement under the 2006 Equity and Performance Incentive Plan (Amended and Restated as of October 13, 2023). The options vest annually in three substantially equal installments commencing October 15, 2025, subject to vesting conditions.

Remarks: Exhibit 24.1 - Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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