Warrior Met Coal Inc — Current Report (Form 8-K)

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): September 2, 2025 (August 28, 2025)

WARRIOR MET COAL, INC.

(Exact Name of Registrant as Specified in its Charter)

Registrant's telephone number, including area code: (205) 554-6150

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:

☐ 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 Exchange 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. o

Item 1.01 Entry into a Material Definitive Agreement

First Amendment to Second Amended and Restated Asset-Based Revolving Credit Agreement

On August 28, 2025, Warrior Met Coal, Inc. (the “Company”) entered into that certain First Amendment to Second Amended and Restated Asset-Based Revolving Credit Agreement (the “Amendment”), by and among the Company and certain of its subsidiaries, as borrowers, the guarantors party thereto, the lenders party thereto and Citibank, N.A. as administrative agent, which amends the Company's existing Second Amended and Restated Asset-Based Revolving Credit Agreement (the “credit facility”, and the credit facility as amended by the Amendment, the “Amended ABL Facility”). The Amendment, among other things, (i) increases the aggregate commitments available to be borrowed under the Amended ABL Facility by $27.0 million to $143.0 million; (ii) extends the maturity date of the credit facility to the earlier of (x) August 28, 2030 and (y) 91 days prior to the maturity date of the Company's 7.875% Senior Notes due 2028 (if such notes are still outstanding as of such date); and (iii) amends certain borrowing base calculations and other terms and provisions of the credit facility.

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

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The information in Item 1.01 above is incorporated by reference into this Item 2.03.

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.