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. YesցNoտ 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 suchfiles). YesցNoտ Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or anemerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growthcompany” in Rule 12b-2 of the Exchange Act. Accelerated filerտSmaller reporting companyցEmerging growth companyտIf an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new Large accelerated filerտNon-accelerated filerց or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.տ Indicate by check mark whether the Registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal controlover financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared orissued its audit report.տ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the Registrant included in thefiling reflect the correction of an error to previously issued financial statements.ց Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation receivedby any of the Registrant’s executive officers during the relevant recovery period pursuant to § 240.10D-1(b).ց Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). YesտNoց The aggregate market value of the voting and non-voting common equity held by non-affiliates of the Registrant, based on the closing price of the sharesof common stock on the Nasdaq Global Market on June 30, 2025, was $167,829,001. The number of shares of Registrant’s Common Stock outstanding as of March 11, 2026 was 11,905,652. DOCUMENTS INCORPORATED BY REFERENCEPortions of the Registrant’s Definitive Proxy Statement relating to the Company’s 2026 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report. XOMA Royalty Corporation2025 FORM 10-K ANNUAL REPORTTABLE OF CONTENTS PART I Item 1.Business . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13Item 1A.Risk Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28Item 1B.Unresolved Staff Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68Item 1C.Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68Item 2.Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69Item 3.Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69Item 4.Mine Safety Disclosures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69 PART II Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchasesof Equity Securities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70Item 6.Reserved. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71Item 7.Management’s Discussion and Analysis of Financial Condition and Results of Operations71Item 7A.Quantitative and Qualitative Disclosures about Market Risk . . . . . . . . . . . . . . . . . . . . . . . . .84Item 8.Financial Statements and Supplementary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84Item 9.Changes in and Disagreements With Accountants on Accounting and Financial Disclosure84Item 9A.Controls and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84Item 9B.Othe