
☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGEACT OF 1934For the transition period fromtoCommission File Number 001-37470 TransUnion (Exact name of registrant as specified in its charter) Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.☐Yes☐No Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the SecuritiesExchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file suchreports), and (2) has been subject to such filing requirements for the past 90 days. Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submittedpursuant to Rule 405 of Regulation S-T (§ 232-405 of this chapter) during the preceding 12 months (or for such shorter period thatthe registrant was required to submit and post such files). ☐Yes☐No Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smallerreporting company, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smallerreporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act. ☐Large accelerated filer☐Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐Emerging growth company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of theeffectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) bythe registered public accounting firm that prepared or issued its audit report. ☐ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of theregistrant included in the filing reflect the correction of an error to previously issued financial statements. ☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-basedcompensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant was approximately$14.4 billion as of June 28, 2024 (based on the closing stock price of such stock as quoted on the New York Stock Exchange). As of January 31, 2025, there were 195.1 million shares of TransUnion common stock outstanding, par value $0.01 per share. DOCUMENTS INCORPORATED BY REFERENCEPortions of the Proxy Statement of TransUnion for the Annual Meeting of Stockholders to be held May 7, 2025 are incorporated by reference to the extent specified in Part III of this Form 10-K. TABLE OF CONTENTS PART I1ITEM 1. BUSINESS1ITEM 1A. RISK FACTORS20ITEM 1B. UNRESOLVED STAFF COMMENTS39ITEM 1C. CYBERSECURITY39ITEM 2. PROPERTIES40ITEM 3. LEGAL PROCEEDINGS40ITEM 4. MINE SAFETY DISCLOSURES40INFORMATION ABOUT OUR EXECUTIVE OFFICERS41PART II44ITEM 5. MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDERMATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES44ITEM 6. RESERVED45ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION ANDRESULTS OF OPERATIONS46ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK76ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA77Consolidated Balance Sheets80Consolidated Statements of Operations81Consolidated Statements of Comprehensive Income (Loss)82Consolidated Statements of Cash Flows83Consolidated Statements of Stockholders’ Equity84Notes to Consolidated Financial Statements87ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING ANDFINANCIAL DISCLOSURE118ITEM 9A. CONTROLS AND PROCEDURES118ITEM 9B. OTHER INFORMATION119ITEM 9C.DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENTINSPECTIONS119PART III120ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE120ITEM 11. EXECUTIVE COMPENSATION120ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENTAND RELATED STOCKHOLDER MATTERS120ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTORINDEPENDENCE120ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES121PART IV122ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES122ITEM 16. FORM 10-K SUMMARY126 Cautionary Notice Regarding