FORM 10-Q_____________________________ (Mark One) ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended March 31, 2026OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period fromto Commission File Number 1-11356_______________________________ Radian Group Inc. (Exact name of registrant as specified in its charter)_______________________________ 23-2691170 Delaware (I.R.S. Employer Identification No.) (State or other jurisdiction of incorporation or organization) 550 East Swedesford Road, Suite 350, Wayne,PA 19087(Address of principal executive offices) (Zip Code) (215) 231-1000(Registrant’s telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: Trading Symbol(s) Name of each exchange on which registered New York Stock Exchange Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filingrequirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 ofRegulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, oran 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. Large Accelerated Filer☒Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐company If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with anynew 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). APPLICABLE ONLY TO CORPORATE ISSUERS: Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date: 132,975,196 shares ofcommon stock, $0.001 par value per share, outstanding on May 6, 2026. Table of Contents PageGlossary of Abbreviations and Acronyms for Selected References3Cautionary Note Regarding Forward-Looking Statements—Safe Harbor Provisions7 Item 1Financial Statements (Unaudited)10Item 2Management’s Discussion and Analysis of Financial Condition and Results of Operations56Item 3Quantitative and Qualitative Disclosures About Market Risk85Item 4Controls and Procedures85 Item 1Legal Proceedings86Item 1ARisk Factors86Item 2Unregistered Sales of Equity Securities and Use of Proceeds86Item 5Other Information87Item 6Exhibits88 Glossary of Abbreviations and Acronyms for Selected References The following list defines various abbreviations and acronyms used throughout this report, including the Condensed ConsolidatedFinancial Statements, the Notes to Unaudited Condensed Consolidated Financial Statements and Management’s Discussion and Analysis ofFinancial Condition and Results of Operations. A number of cross-references to additional information included throughout this Quarterly Report on Form 10-Q and in our AnnualReport on Form 10-K for the year ended December 31, 2025 (“2025 Form 10-K”) are also utilized throughout this report, to assist readersseeking additional information related to a particular subject. Cautionary Note Regarding Forward-Looking Statements—Safe Harbor Provisions All statements in this report that address events, developments or results that we expect or anticipate may occur in the future are“forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Exchange Act and thePrivate Securities Litigation Reform Act of 1995. In most cases, forward-looking statements may be identified by words such as “anticipate,”“may,” “will,” “could,” “should,” “would,” “expect,” “intend,” “plan,” “goal,” “pursue,” “contemplate,” “believe,” “estimate,” “predict,” “project,”“potential,” “continue,” “seek,” “strategy,” “future,” “likely” or the negative or other variations on these words and other similar expressions.These statements, which may include, without limitation, projections regarding our future performance and financial condition and statementsregarding our plans to divest or otherwise exit our Mortgage Conduit, Title and Real Estate Services businesses, are made on the basis ofmanagement’s current views and assump