Curbline Properties Corp 2025年度报告

☑ANNUAL REPORT PURSUANT TO SECTION 13OR 15(d) OF THE SECURITIES EXCHANGE ACTOF 1934For the fiscal year ended December 31, 2025OR ☐TRANSITION REPORT PURSUANT TOSECTION 13 OR 15(d) OF THESECURITIES EXCHANGE ACT OF 1934For the transition period fromtoCommission file number 1-42265 Curbline Properties Corp.(Exact Name of Registrant as Specified in Its Charter) Maryland93-4224532(State or Other Jurisdiction of Incorporation or Organization)(I.R.S. Employer Identification No.)320 Park Avenue, New York, New York10022(Address of Principal Executive Offices)(Zip Code)Registrant’s telephone number, including area code (216) 755-5500Securities registered pursuant to Section 12(b) of the Act: Title of each classTradingSymbol(s)Name of each exchange on which registeredCommon Stock, Par Value $0.01Per ShareCURBNew York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes☑No☐ 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 Securities Exchange Act of 1934 during thepreceding 12 months (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 90days. Yes☑No☐ 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(§232.405 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, or an emerging growthcompany. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of theExchange Act. 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 complying with any new or revisedfinancial 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 the effectiveness of its internal control over financialreporting under 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 thecorrection 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-based compensation received by any of theregistrant’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 Exchange Act). Yes☐No☑The aggregate market value of the voting stock held by non-affiliates of the registrant at June 30, 2025, was $2.2 billion.Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.105,367,939 shares of common stock outstanding as of February 9, 2026 DOCUMENTS INCORPORATED BY REFERENCE The registrant incorporates by reference in Part III hereof portions of its definitive Proxy Statement for its 2026 Annual Meeting of Stockholders. EXPLANATORY NOTE This annual report of Curbline Properties Corp. (the “Company” or “Curbline”, “we” or “us”) includes the financial statements ofthe Company as of December 31, 2025 and 2024. On October 1, 2024, SITE Centers Corp. (“SITE Centers”) completed the spin-off of Curbline, pursuant to which SITE Centerscontributed 79 convenience properties to the Company. The spin-off was effected pursuant to the Separation and DistributionAgreement, dated as of October 1, 2024, among the Company, Curbline Properties LP, a subsidiary of the Company, and SITE Centers,as further described in the Information Statement (as defined below). The spin-off is more fully described in the information statement included as Exhibit 99.1 to the Company’s RegistrationStatement on Form 10 (File No. 001-42265) filed with the Securities and Exchange Commission on September 3, 2024 (the“Information Statement”). The spin-off became effective at 12:01 a.m., Eastern Time, on October 1, 2024 (the “Spin-Off Date”). TheCompany’s common s