CITIGROUP INC

As discussed below, certain reclassifications have been made to the prior periods’ financial statements and disclosures to conform to the current period’s presentation, effective January 1, 2026. Citi’s consolidated results were unchanged for all periods presented.

•Citi transferred its Retail Banking business from the former U.S. Personal Banking (USPB) to Wealth and integrated the remaining USPB businesses into a new U.S. Consumer Cards segment.

•As part of this transfer, the financial results and balance sheet of the Retail Banking business moved to the Wealth segment.

•Citi allocates tangible common equity (TCE) internally to its businesses annually, taking into consideration a variety of factors, including the economics of client relationships that cross businesses. Citi updated its TCE allocation methodology among the Services, Markets and Banking segments to better align their capital usage associated with the shared economic benefits of corporate lending to clients across these segments, eliminating the need for a corporate lending revenue share arrangement, which had historically been reflected in the “All other” revenue line item of these segments.

•As a result of these changes, the revenues of Services and Markets increased and the revenues of Banking decreased.

•Certain interest rate risk-management activities within Markets were moved to All Other—Corporate/Other, or between businesses within Markets. These changes impacted the results for Markets, as well as All Other—Corporate/Other.

For additional information on these and other reporting changes, see the Historical Quarterly Financial Data Supplement for the five-year quarterly and annual periods ended December 31, 2025, reflecting the above-mentioned first quarter of 2026 presentation changes, included as Exhibit 99.1 to Citigroup’s Current Report on Form 8-K furnished to the SEC on April 3, 2026.

As previously announced, Citi also enhanced its 2026 TCE allocation methodology, which affected the TCE allocation for each segment as of the first quarter of 2026. For additional information, see Citi’s First Quarter 2026 Earnings Results Presentation available on Citi’s Investor Relations website. This earnings results presentation is not incorporated by reference into, and does not form any part of, this Form 10-Q.