Citigroup Global Markets Holdings Inc. is offering Autocallable Securities linked to the worst performing of the Russell 2000® Index and S&P 500® Index, due December 21, 2029. The securities, guaranteed by Citigroup Inc., do not pay interest and are subject to automatic early redemption if the worst performing underlying closes at or above its initial value on specified valuation dates.The securities offer potential returns through premiums upon early redemption or at maturity, capped at 41.25% of the principal amount. However, investors risk losing up to their entire investment if the worst performing underlying closes below 70% of its initial value at maturity. The estimated value of $949.00 per $1,000 security is less than the issue price, reflecting costs and expected profit for Citigroup and its affiliates.Key risks include potential loss of principal, limited upside potential, credit risk of the issuers, and lack of interim interest payments. The securities will not be listed on any exchange, potentially limiting liquidity. Investors should carefully consider the complex features and risks before investing in these securities.

Citigroup Global Markets Holdings Inc. is offering Autocallable Securities linked to the worst performing of the Russell 2000® Index and S&P 500® Index, due December 21, 2029. The securities, guaranteed by Citigroup Inc., do not pay interest and are subject to automatic early redemption if the worst performing underlying closes at or above its initial value on specified valuation dates.The securities offer potential returns through premiums upon early redemption or at maturity, capped at 41.25% of the principal amount. However, investors risk losing up to their entire investment if the worst performing underlying closes below 70% of its initial value at maturity. The estimated value of $949.00 per $1,000 security is less than the issue price, reflecting costs and expected profit for Citigroup and its affiliates.Key risks include potential loss of principal, limited upside potential, credit risk of the issuers, and lack of interim interest payments. The securities will not be listed on any exchange, potentially limiting liquidity. Investors should carefully consider the complex features and risks before investing in these securities.