UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)

September 19, 2019

SM Energy Company

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (303) 861-8140

Not applicable

(Former name or former address, if changed since last report.)

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 (see General Instruction A.2.):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ¨

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Explanatory Note

SM Energy Company (the "Company") is filing this amendment (this "Amended Filing") to the Current Report on Form 8-K that was filed on September 24, 2019 (the "Original Form 8-K") to remove the information provided pursuant to Section 7.01 to the Original Form 8-K. Such information was inadvertently included in the Original Form 8-K in error. While the Company's bank syndicate is in the process of conducting its semi-annual borrowing base redetermination, the process has not concluded. The Company has no reason to believe that the semi-annual borrowing base redetermination will not result in a reaffirmation of the borrowing base. This Amended Filing amends and restates the Original Form 8-K in its entirety.

On September 19, 2019, the Company and its lenders entered into the Second Amendment (the “Amendment”) to the Sixth Amended and Restated Credit Agreement (the “Credit Agreement”) by and among the Company, Wells Fargo Bank, National Association, as Administrative Agent, and the institutions named therein as Lenders. Capitalized terms used but not defined herein have the meanings as ascribed to such terms in the Credit Agreement.

The Amendment modifies the Credit Agreement to permit the Company to enter into Swap Agreements with respect to the price of electricity in order to minimize exposure to electrical price volatility.

The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by reference to the Amendment, a copy of which is filed as Exhibit 10.1 to this Current Report on Form 8-K and is incorporated herein by reference.

The information set forth in Item 1.01 of this Current Report on Form 8-K is incorporated into this Item 2.03 by reference.

(d) Exhibits.

SIGNATURES

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