Material Event (Form 8-K)

On June 26, 2025, Citibank Credit Card Issuance Trust issued a tranche of Notes of the Citiseries entitled 4.49% Class 2025-A2 Notes of June 2030 (Legal Maturity Date June 2032) in the principal amount of $750,000,000. The terms of the Class 2025-A2 Notes are set forth in the Terms Document dated June 26, 2025, and attached hereto as Exhibit 4.1. On June 26, 2025, Christopher R. Becker, Esq., Director and Senior Counsel - SEC Disclosure and Corporate Securities Issuance of Citigroup Inc., delivered a legality opinion with respect to the Class 2025-A2 Notes and Orrick, Herrington & Sutcliffe LLP delivered a tax opinion with respect to the Class 2025-A2 Notes. The legality and tax opinions are attached hereto as Exhibit 5.1 and Exhibit 8.1, respectively.

Capitalized terms used but not defined herein have the meanings ascribed to such terms in the Second Amended and Restated Indenture dated as of September 26, 2000, as amended and restated as of August 9, 2011, and as further amended and restated as of November 10, 2016, between Citibank Credit Card Issuance Trust and Deutsche Bank Trust Company Americas, as Trustee.