FORM 10-Q (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGEACT OF 1934 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGEACT OF 1934 Commission File Number:001-37470 TransUnion (Exact name of registrant as specified in its charter) Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Actof 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has beensubject 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 submitted pursuant to Rule405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required tosubmit such files). Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reportingcompany, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,”and “emerging growth company” in Rule 12b-2 of the Exchange Act: Table of Contents ☐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 for complyingwith any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).☒ As of March31, 2026, there were 192.8million shares of TransUnion common stock outstanding. TRANSUNIONQUARTERLY REPORT ON FORM 10-QQUARTER ENDED MARCH 31, 2026TABLE OF CONTENTS PART I. FINANCIAL INFORMATIONITEM 1. UNAUDITED CONSOLIDATED FINANCIAL STATEMENTSConsolidated Balance SheetsConsolidated Statements of OperationsConsolidated Statements of Comprehensive IncomeConsolidated Statements of Cash FlowsConsolidated Statements of Stockholders’ EquityNotes to Unaudited Consolidated Financial StatementsITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OFOPERATIONSITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISKITEM 4. CONTROLS AND PROCEDURESPART II. OTHER INFORMATIONITEM 1. LEGAL PROCEEDINGSITEM 1A. RISK FACTORSITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDSITEM 5. OTHER INFORMATIONITEM 6. EXHIBITSSIGNATURES ITEM 1. UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS TRANSUNION AND SUBSIDIARIESConsolidated Balance Sheets (Unaudited)(in millions, except per share data) TRANSUNION AND SUBSIDIARIESConsolidated Statements of Operations (Unaudited)(in millions, except per share data) Three Months Ended March 31, TRANSUNION AND SUBSIDIARIESConsolidated Statements of Comprehensive Income (Unaudited)(in millions) Three Months Ended March 31, TRANSUNION AND SUBSIDIARIESConsolidated Statements of Cash Flows (Unaudited)(in millions) See accompanying notes to unaudited consolidated financial statements. TRANSUNION AND SUBSIDIARIESNotes to Unaudited Consolidated Financial Statements(Tabular amounts in millions, except per share amounts) 1. Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements of TransUnion and subsidiaries have been prepared in accordancewith U.S. generally accepted accounting principles (“GAAP”) for interim financial statements and, in our opinion, include all adjustments of anormal recurring nature necessary for a fair statement of the interim periods presented. As a result of displaying amounts in millions, roundingdifferences may exist in the financial statements and footnote tables. The interim results presented are not necessarily indicative of the resultsthat may be expected for the full year ending December31, 2026. The Company’s Consolidated Balance Sheet data for the year endedDecember31, 2025 was derived from audited financial statements. Therefore, these unaudited consolidated financial statements should be readin conjunction with our audited financial statements and related notes included in our Annual Report on Form 10-K for the yearendedDecember31, 2025, filed with the Securities and Exchange Commission (“SEC”) on February27, 2026. Unless the context indicates otherwise, any reference in this report to the “Company,” “we,” “our,” “us,” and “its” refers to TransUnion and itsconsolidated subsidiaries, collectively. For the periods presented, TransUnion does not have any material assets, liabilities, revenues, expenses or operations of any kind other than itsownership investment in TransUnion Intermediate Holdings, Inc. Principles of Consolidation The consolidated financial statements of TransUnion include the accounts of TransU