TransUnion

Our Fifth Amended and Restated Bylaws (“Bylaws”) contain a proxy access provision, which enables an eligible stockholder, or a group of up to 20 stockholders, owning at least three percent (in aggregate, if applicable) of our outstanding common stock continuously for at least three years, to nominate and include in our proxy materials director nominees constituting up to the greater of two nominees or 20% of the number of directors on the Board that the common stockholders are entitled to elect, provided that the nominating stockholders and the proposed Board nominees satisfy the requirements in our Bylaws. If an eligible stockholder or group of stockholders wishes to nominate one or more director candidates to be included in our proxy statement for the 2027 Annual Meeting of Stockholders, our Corporate Secretary must receive the proposal at our principal executive offices at 555 West Adams Street, Chicago, Illinois 60661 between October 25, 2026 and November 24, 2026.