United States Commodity Index Funds Trust 8-K

What Happened

• On December 26, 2025, United States Commodity Index Funds Trust (the Registrant) and two of its series — United States Commodity Index Fund (USCI) and United States Copper Index Fund (CPER) — issued monthly account statements for the month ended November 30, 2025.
• The statements are presented as Statements of Income (Loss) and Statements of Changes in Net Asset Value and were furnished on Form 8-K (filed December 29, 2025) as a Regulation FD disclosure.

Key Details

• The monthly account statements cover the period ended November 30, 2025 and were issued December 26, 2025.
• Statements were furnished pursuant to Rule 4.22 under the Commodity Exchange Act.
• A copy of the statements is included as Exhibit 99.1 to the 8-K and is available at www.uscfinvestments.com.
• The information furnished (including Exhibit 99.1) is not deemed “filed” under Section 18 of the Exchange Act and is not automatically incorporated by reference into other SEC filings.

Why It Matters

• Investors in USCI and CPER get timely monthly financial detail — income (loss) and changes in NAV — to monitor recent fund performance and NAV movements.
• Availability on the fund website and in the 8-K ensures transparent access to the same reporting required under Rule 4.22, but the filing does not expand legal liabilities under Section 18 nor automatically become part of other SEC filings.