Citigroup Global Markets Holdings Inc., guaranteed by Citigroup Inc., filed a free writing prospectus on November 3, 2026 summarizing preliminary terms for 5-Year Buffered Autocallable Securities linked to the S&P 500 Futures 40% Intraday Edge Volatility TCA 6% Decrement Index (USD) ER, with a pricing date of November 30, 2026 and a maturity date of December 4, 2031.

Key Highlights

  • Underlying index: The securities are linked to the S&P 500 Futures 40% Intraday Edge Volatility TCA 6% Decrement Index (USD) ER, ticker "SPXI4EV6."
  • Premium rate: The filing discloses an 18.50% per annum premium applicable upon automatic early redemption or at maturity if the final underlying value meets the threshold.
  • Autocall threshold: Automatic early redemption is triggered if the closing value of the underlying on any valuation date prior to final is greater than or equal to 90% of the initial underlying value (the premium threshold value).
  • Buffer protection: A 15% buffer percentage applies; the final buffer value is set at 85% of the initial underlying value.
  • Principal at risk: If the final underlying value falls below the final buffer value, investors lose 1% of stated principal for every 1% by which depreciation exceeds the buffer percentage, according to the filing.
  • Stated principal amount: $1,000 per security.
  • CUSIP / ISIN: 17334DU67 / US17334DU675.

Preliminary Terms for Citigroup's Buffered Autocallable Securities Linked to SPXI4EV6

According to the preliminary pricing supplement dated November 2, 2026, Citigroup Global Markets Holdings Inc. is the issuer of the securities and Citigroup Inc. serves as guarantor. The securities are linked to the S&P 500 Futures 40% Intraday Edge Volatility TCA 6% Decrement Index (USD) ER (ticker: "SPXI4EV6"). The pricing date is November 30, 2026, with valuation dates occurring monthly beginning approximately one year after issuance. The final valuation date is December 1, 2031, and the maturity date is December 4, 2031.

The filing describes an automatic early redemption feature: if on any valuation date prior to final the closing value of the underlying is greater than or equal to the premium threshold value (90% of the initial underlying value), the securities are redeemed for $1,000 plus the applicable premium at 18.50% per annum. If not redeemed early, payment at maturity depends on the final underlying value relative to the premium threshold value and the final buffer value (85% of the initial underlying value). The filing notes that "if the securities are not automatically redeemed prior to maturity and the final underlying value is less than the final buffer value, you will lose 1% of the stated principal amount of your securities at maturity for every 1% by which that depreciation exceeds the buffer percentage."

The filing lists extensive risk considerations, including that the securities do not pay interest, will not be listed on any securities exchange, and that the estimated value of the securities on the pricing date is less than the issue price. The filing also discloses that the underlying applies a decrement of 6% per annum, which "may reduce the annual return of the underlying by more (and possibly significantly more) than 6%." All payments are subject to the credit risk of both Citigroup Global Markets Holdings Inc. and Citigroup Inc. The filing was made pursuant to Rule 433, and the registration statement file numbers cited are 333-293732 and 333-293732-02.

What Was Disclosed

Citigroup Global Markets Holdings Inc. filed preliminary terms for 5-year buffered autocallable securities linked to the SPXI4EV6 index, offering an 18.50% per annum premium, a 15% buffer, monthly autocall observation, and a $1,000 stated principal amount, with maturity on December 4, 2031.