United States Commodity Index Funds Trust (NYSE: CPER) posts November 2025 fund statements

Rhea-AI Filing Summary

United States Commodity Index Funds Trust, the sponsor of the United States Commodity Index Fund (USCI) and the United States Copper Index Fund (CPER), furnished monthly account statements for the month ended November 30, 2025. These reports, provided under Commodity Exchange Act Rule 4.22, include Statements of Income (Loss) and Statements of Changes in Net Asset Value for each fund. The statements are attached as Exhibit 99.1 and are also available on the USCI and CPER website at www.uscfinvestments.com. The information is furnished under Regulation FD and is not treated as filed for liability purposes under the Securities Exchange Act or incorporated into Securities Act filings unless specifically referenced.

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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 COMMODITY INDEX FUNDS TRUST

(Exact name of registrant as specified in its charter)

Delaware	001-34833	27-1537655
(State or other jurisdiction	(Commission File Number)	(I.R.S. Employer
of incorporation)		Identification No.)

	1850 Mt. Diablo Boulevard, Suite 640
	Walnut Creek, California 94596
(510) 522-9600	(Address of principal executive offices) (Zip Code)
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 (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 Commodity Index Fund		USCI		NYSE Arca, Inc.
Shares of United States Copper Index Fund		CPER		NYSE Arca, Inc.

Item 7.01. Regulation FD Disclosure.

On December 26, 2025, United States Commodity Index Funds Trust (the “Registrant”), and United States Commodity Index Fund (“USCI”) and United States Copper Index Fund (“CPER”), each a series of the Registrant, issued their monthly account statements for the month ended November 30, 2025, which are presented in the form of Statements of Income (Loss) and Statements of Changes in Net Asset Value, as required pursuant to Rule 4.22 under the Commodity Exchange Act. A copy of the monthly account statements is furnished as Exhibit 99.1 to this Current Report on Form 8-K and also can be found on USCI’s and CPER’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

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 COMMODITY INDEX FUNDS TRUST
	By:	United States Commodity Funds LLC, its sponsor
Date:      December 26, 2025	By:	/s/ Stuart P. Crumbaugh
	Name:	Stuart P. Crumbaugh
	Title:	Chief Financial Officer

FAQ

What did United States Commodity Index Funds Trust disclose in this CPER 8-K?

The trust furnished monthly account statements for the month ended November 30, 2025 for the United States Commodity Index Fund (USCI) and the United States Copper Index Fund (CPER), including Statements of Income (Loss) and Statements of Changes in Net Asset Value.

Which funds are covered by the November 30, 2025 monthly statements for CPER?

The monthly account statements cover United States Commodity Index Fund (USCI) and United States Copper Index Fund (CPER), each a series of United States Commodity Index Funds Trust.

Where can investors access the USCI and CPER November 2025 monthly account statements?

The monthly account statements are furnished as Exhibit 99.1 to the report and can also be found on USCI’s and CPER’s website at www.uscfinvestments.com.

Are the November 2025 USCI and CPER statements considered filed with the SEC?

No. The information in this report, including Exhibit 99.1, is furnished under Regulation FD and is not deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934 or otherwise subject to its liabilities.

Can the November 2025 CPER and USCI statements be incorporated into other securities filings?

The information will not be incorporated by reference into Securities Act filings unless it is expressly set forth by specific reference in a particular filing.

Under which regulatory requirement are the USCI and CPER monthly statements prepared?

The monthly account statements, including the Statements of Income (Loss) and Statements of Changes in Net Asset Value, are prepared as required pursuant to Rule 4.22 under the Commodity Exchange Act.