United States Commodity Index Funds Trust 8-K

What Happened
United States Commodity Index Funds Trust (the Registrant) announced on January 29, 2026 that two of its series — United States Commodity Index Fund (USCI) and United States Copper Index Fund (CPER) — issued their monthly account statements for the month ended December 31, 2025. The statements are presented as Statements of Income (Loss) and Statements of Changes in Net Asset Value in accordance with Rule 4.22 under the Commodity Exchange Act and are furnished as Exhibit 99.1 to the Form 8‑K.

Key Details

• Filing date: January 29, 2026 (Form 8‑K, Item 7.01).
• Funds covered: United States Commodity Index Fund (USCI) and United States Copper Index Fund (CPER).
• Period reported: month ended December 31, 2025.
• Documents: Statements of Income (Loss) and Statements of Changes in Net Asset Value; furnished as Exhibit 99.1 and posted at www.uscfinvestments.com.
• Disclosure note: The furnished information (including Exhibit 99.1) is not deemed “filed” for Section 18 liability purposes and is not incorporated by reference into other filings unless expressly stated.

Why It Matters
Monthly account statements give investors timely visibility into each fund’s recent income/loss and changes in net asset value (NAV), helping monitor short‑term performance and holdings activity. This filing is a routine regulatory disclosure under Rule 4.22 and does not announce a corporate change, earnings release, or management action beyond providing the month‑end financial statements.