United States 12 Month Natural Gas Fund, LP

Regulatory Filings • Dec 29, 2025

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UNITED STATES

SECURITIES AND EXCHANGE COMMISION

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): December 26, 2025

UNITED STATES 12 MONTH NATURAL GAS FUND, LP

(Exact name of registrant as specified in its charter)

Delaware	001-34535	26-0431733
(State
or other jurisdiction of
incorporation)	(Commission
File Number)	(I.R.S.
Employer Identification No.)

| | 1850
Mt. Diablo Boulevard , Suite 640 Walnut
Creek , California 94596 |
| --- | --- |
| ( 510 ) 522-9600 Registrant’s telephone number, including area code | (Address of principal
executive offices) (Zip 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 (see General Instruction A.2. below):

¨ Written communication 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))

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. ¨

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

| Title
of each class | Trading
Symbol(s) | Name
of each exchange on which registered: |
| --- | --- | --- |
| Shares
of United States 12 Month Natural Gas Fund, LP | UNL | NYSE
Arca, Inc. |

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Item 7.01. Regulation FD Disclosure.

On December 26, 2025, United States 12 Month Natural Gas Fund, LP (the “Registrant”) issued its monthly account statement for the month ended November 30, 2025, which is presented in the form of a Statement of Income (Loss) and a Statement of Changes in Net Asset Value, as required pursuant to Rule 4.22 under the Commodity Exchange Act. A copy of the monthly account statement is furnished as Exhibit 99.1 to this Current Report on Form 8-K and also can be found on the Registrant’s website at www.uscfinvestments.com. The information furnished in this Current Report on Form 8-K, including Exhibit 99.1, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in any such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit 99.1

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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.

	UNITED STATES 12 MONTH NATURAL GAS FUND, LP — By:	United States Commodity Funds LLC, its general partner
Date: December 26, 2025	By:	/s/ Stuart P. Crumbaugh
	Name:	Stuart P. Crumbaugh
	Title:	Chief Financial Officer

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