United States Commodity Index Funds Trust - 8-K

Item
7.01. Regulation FD Disclosure.

On March 27, 2026, each of United States Commodity Index Fund (“USCI”)
and United States Copper Index Fund (“CPER”), which are series of the United States Commodity Index Funds Trust (the “Registrant”),
issued their annual financial statements for the year ended December 31, 2025, as required pursuant to Rule 4.22 under the Commodity
Exchange Act. A copy of the annual financial statements for USCI is furnished as Exhibit 99.1 to this Current Report on Form 8-K
and also can be found on USCI’s website at www.uscfinvestments.com. A copy of the annual financial statements for CPER is furnished
as Exhibit 99.2 to this Current Report on Form 8-K and also can be found on CPER’s website at www.uscfinvestments.com.
The information furnished in this Current Report on Form 8-K, including Exhibit 99.1 and Exhibit 99.2, 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      Annual Financial Statements of the Registrant for the year ended December 31, 2025.

Exhibit
99.2      Annual Financial Statements of the Registrant for the year ended December 31, 2025.