FORM 10-K (Mark One)☒ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the fiscal year ended December31, 2025OR☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period fromtoCommission file number: 1-12110 CAMDEN PROPERTY TRUST (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.YesNo Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of the Act.YesNo Indicate by check mark whether registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90 days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of "largeaccelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act (check one): AcceleratedfilerSmallerreportingcompany☐Emerging growthcompany☐ Large accelerated filerNon-accelerated filer If an emerging growth company, indicate by check mark if the registrant has elected to not use the extended transition period for complying with any new or revised financialaccounting standards provided pursuant of 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 the effectiveness of its internal control over financial reportingunder Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the 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 the registrant included in the filing reflect the correctionof 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-based compensation received by any of the registrant’sexecutive 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 the Rule 12b-2 of the Act).Yes☐No The aggregate market value of voting and non-voting common equity held by non-affiliates of the registrant was $11,980,283,165 based on a June 30, 2025 share price of $112.69.On February5, 2026, 103,408,210 common shares of the registrant were outstanding, net of treasury shares and shares held in our deferred compensation arrangements. DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's Proxy Statement in connection with its Annual Meeting of Shareholders to be held on or about May8, 2026 are incorporated by reference in Part III.The registrant’s definitive Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this reportrelates. TABLE OF CONTENTS PART I Item 1.BusinessItem 1A.Risk FactorsItem 1B.Unresolved Staff CommentsItem 1C.CybersecurityItem 2.PropertiesItem 3.Legal ProceedingsItem 4.Mine Safety Disclosures PART II Item 5.Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity SecuritiesItem 6.ReservedItem 7.Management’s Discussion and Analysis of Financial Condition and Results of OperationsItem 7A.Quantitative and Qualitative Disclosures About Market RiskItem 8.Financial Statements and Supplementary DataItem 9.Changes in and Disagreements with Accountants on Accounting and Financial DisclosureItem 9A.Controls and ProceduresItem 9B.Other InformationItem 9C.Disclosure Regarding Foreign Jurisdictions that Prevent Inspections PART III Item 10.Directors, Executive Officers, and Corporate GovernanceItem 11.Executive CompensationItem 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder MattersItem 13.Certain Relationships and Related Transactions, and Director IndependenceItem 14.Principal Accountant Fees and Services PART IV Item 15.Exhibits and Financial Statement SchedulesItem 16.Form 10-K SummarySIGNATURES PART I Item1. Business General Formed on May25, 1993, Camden Property Trust, a Texas real estate investment trust ("REIT"), and all consolid