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): November 6, 2025

Mach Natural Resources LP

(Exact name of registrant as specified in its charter)

Delaware		001-41849		93-1757616
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

14201 Wireless Way, Suite 300, Oklahoma City, Oklahoma		73134
(Address of principal executive offices)		(Zip Code)

(405) 252-8100

Registrant’s telephone number, including area code

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 Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common units representing limited partner interests		MNR		New York Stock Exchange

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 November 6, 2025, Mach Natural Resources LP (the “Company”) issued a press release (the “Press Release”) providing information on its results of operations and financial condition for the quarter ended September 30, 2025. The Press Release is furnished as Exhibit 99.1 to this Current Report on Form 8-K (this “Report”).

The information under this Item 2.02 and in Exhibit 99.1 to this Report is being furnished and shall not be deemed “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section. The information under this Item 2.02 and in Exhibit 99.1 to this Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933, as amended (the “Securities Act”).

Item 7.01. Regulation FD Disclosure.

In addition to providing the results of operations and financial condition for the quarter ended September 30, 2025, the Press Release announced the Company’s declaration of its quarterly distribution for the third quarter of 2025. The full text of the Press Release is furnished as Exhibit 99.1 to this Report and is incorporated herein by reference.

The information under this Item 7.01 and in Exhibit 99.1 to this Report is being furnished and shall not be deemed “filed” for the purpose of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that Section. The information under this Item 7.01 and in Exhibit 99.1 to this Report shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.		Description
99.1		Press Release issued November 6, 2025.
104		Cover Page Interactive Data File (formatted as Inline XBRL).

SIGNATURES

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

	Mach Natural Resources LP

	By:	Mach Natural Resources GP LLC,
		its general partner

Dated: November 6, 2025	By:	/s/ Tom L. Ward
		Name:	Tom L. Ward
		Title:	Chief Executive Officer

MACH NATURAL RESOURCES LP 8-K