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): August 7, 2025

Montauk Renewables, Inc.

(Exact Name of Registrant as Specified in Charter)

Delaware

1-39919

85-3189583

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

5313 Campbells Run Road

Suite 200

Pittsburgh, PA 15205

(Address of principal executive offices) (ZIP Code)

Telephone: (412) 747-8700

(Registrant’s telephone number, including area code)

N/A

(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 Act:

Title of each class

Trading

Symbol(s)

Name of each exchange

on which registered

Common Stock, $0.01 par value per share

MNTK

The Nasdaq Capital Market

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. ☐

Item 2.02

Results of Operations and Financial Condition.

On August 7, 2025, Montauk Renewables, Inc. filed a headline earnings per share (“HEPS”) report with the Johannesburg Stock Exchange (“JSE”), a self-regulatory organization in South Africa, that includes certain historical financial information for the six months ended June 30, 2025. The HEPS report was prepared for the purpose of complying with the reporting requirements of the JSE. A copy of the HEPS report is attached as Exhibit 99.1 to this Current Report on Form 8-K.

The information contained in this Item 2.02, including the exhibit attached hereto, is being furnished and shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), or incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, unless such subsequent filing specifically references this Current Report on Form 8-K.

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits


Exhibit No.		Description

99.1		HEPS report, as filed with the JSE, for the six months ended June 30, 2025

104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

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.

MONTAUK RENEWABLES, INC.

Dated: August 7, 2025

/s/ Kevin A. Van Asdalan

Kevin A. Van Asdalan

Chief Financial Officer

Montauk Renewables, Inc. 8-K