X0202 SCHEDULE 13G/A 0001193125-26-050758 0000200217 XXXXXXXX LIVE 1 Common Stock 03/31/2026 0001552033 TransUnion 89400J107 555 West Adams Street Chicago IL 60661 Rule 13d-1(b) Dodge & Cox CA 15221968 0 16189511 0 16189511 N 8.4 IA TransUnion 555 West Adams Street, Chicago, Illinois, 60661 Dodge & Cox 555 California Street 40th Floor, San Francisco, CA 94104 California, USA N IA 16,189,511 8.4 15,221,968 0 16,189,511 0 Y N The clients of Dodge & Cox, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or power to direct the receipt of dividends from, and the proceeds from the sale of, TransUnion. Dodge & Cox Stock Fund, an investment company registered under the Investment Company Act of 1940, has an interest of 10,063,200 or 5.2%, of the class of securities reported herein. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Dodge & Cox /S/ Katherine M. Primas 05/14/2026