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): June 6, 2023

ANTERO MIDSTREAM CORPORATION

(Exact name of registrant as specified in its charter)

1615 Wynkoop Street

Denver, Colorado 80202

(Address of Principal Executive Offices) (Zip Code)

Registrant’s Telephone Number, Including Area Code (303) 357-7310

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:

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.  ¨

As further described below in Item 5.07 of this Current Report on Form 8-K, on June 6, 2023, at the 2023 Annual Meeting of Stockholders (the “Annual Meeting”) of Antero Midstream Corporation (the “Company”), the Company’s stockholders approved an amendment (the “Amendment”) to the Company’s Certificate of Incorporation to reflect new Delaware law provisions regarding officer exculpation. On June 8, 2023, the Company filed the Amendment with the Secretary of State of the State of Delaware, and the Amendment became effective upon filing.

A description of the Amendment is set forth in the Company’s definitive proxy statement, which was filed with the Securities and Exchange Commission (the “SEC”) on April 27, 2023 (the “Proxy”) in the section entitled “Item 4: Amendment to Antero Midstream’s Charter to Reflect Officer Exculpation,” which description is incorporated herein by reference. The description is qualified in its entirety by reference to the full text of the Amendment, a copy of which is filed as Exhibit 3.1 to this Current Report on Form 8-K and incorporated herein by reference.

At the Annual Meeting, the Company’s stockholders were requested to (i) elect three Class I members of the Company’s Board of Directors (the “Board”) to serve until the Company’s 2026 annual meeting of stockholders; (ii) ratify the appointment of KPMG LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2023; (iii) approve, on an advisory basis, the compensation of the Company’s named executive officers; and (iv) approve the amendment to the Company’s certificate of incorporation to reflect new Delaware law provisions regarding officer exculpation. Each of these items is more fully described in the Proxy.

The results of the matters voted upon at the Annual Meeting are as follows:

Proposal No. 1 - Election of Class I Directors: Votes regarding the persons elected as Class I directors were as follows:

Proposal No. 2 — Ratification of the Appointment of KPMG LLP: The ratification of the appointment of KPMG LLP was approved as follows:

Proposal No. 3 — Approval of the Compensation, on an Advisory Basis, of the Company’s Named Executive Officers: The voting results were as follows:

Proposal No. 4 — Approval of the Amendment to the Company’s certificate of incorporation to reflect officer exculpation: The voting results were as follows:

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

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.

Dated: June 8, 2023