Form 4 Filing for Casper Wilhelm von Koskull

This filing details transactions made by Casper Wilhelm von Koskull, a director at CITIGROUP INC. On October 1, 2026, von Koskull acquired 6.4904 shares of Common Stock, valued at $131.594 per share, as a reinvestment of dividend equivalents under the company's Compensation Plan for Non-Employee Directors. This transaction is directly owned. Additionally, von Koskull acquired 27.1069 shares of Common Stock, also valued at $131.594 per share, under the same compensation plan. These shares are held for the benefit of the Reporting Person and are indirectly owned. Following these transactions, the post-transaction shares owned directly are 7143.4211 and indirectly are 5351.1497. The filing was signed by Joseph B. Wollard as Attorney-in-Fact on October 2, 2026.