UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 9, 2016

The Sherwin-Williams Company

(Exact Name of Registrant as Specified in Charter)

(216) 566-2000

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

On May 9, 2016, The Sherwin-Williams Company (“Sherwin-Williams”) entered into (a) a Credit Agreement (the “Credit Agreement”) with Citicorp USA, Inc., as administrative agent and issuing bank, and the lenders party thereto, and (b) an Agreement for Letter of Credit (the “LC Agreement”) with Citibank, N.A. (“Citibank”). Under the Credit Agreement, Sherwin-Williams has the right to borrow and to obtain the issuance, renewal, extension and increase of a revolving letter of credit (the “Security Letter of Credit”) up to an aggregate availability of $50,000,000. The Security Letter of Credit will serve as security for any letters of credit that may be issued under the LC Agreement. Under the LC Agreement, Sherwin-Williams may request Citibank to issue letters of credit up to the aggregate maximum amount of the Security Letter of Credit.

No borrowings have been made, and no Security Letter of Credit has been issued, under the Credit Agreement, and no letters of credit have been issued under the LC Agreement.

Certain of the lenders, as well as certain of their respective affiliates, have performed and may in the future perform for Sherwin-Williams and its subsidiaries, various commercial banking, investment banking, lending, underwriting, trust services, financial advisory and other financial services, for which they have received and may in the future receive customary fees and expenses.

The foregoing descriptions of the Credit Agreement and the LC Agreement do not purport to be complete and are qualified in their entirety by reference to the full text of the Credit Agreement and the LC Agreement, copies of which are filed as Exhibits 4.1 and 4.2, respectively, to this Current Report on Form 8-K and are incorporated herein by reference.

The information described in Item 1.01 above relating to the Credit Agreement and the LC Agreement are incorporated herein by reference into this Item 2.03.

(d) Exhibits.

The following exhibits are filed with this Current Report on Form 8-K:

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: May 9, 2016

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EXHIBIT INDEX

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