
FORM 10-K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For 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 fromto Commission File Number: 1-13087 (BXP, Inc.)Commission File Number: 0-50209 (Boston Properties Limited Partnership) BXP, INC.BOSTON PROPERTIES LIMITED PARTNERSHIP (Exact name of Registrants as specified in its charter) BXP, Inc. (State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification Number)Boston Properties Limited PartnershipDelaware04-3372948(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification Number) Prudential Center, 800 Boylston Street, Suite 1900, Boston, Massachusetts 02199-8103(Address of principal executive offices) (Zip Code) (617) 236-3300(Registrants’ telephone number, including area code) Securities registered pursuant to Section12(b) of the Act: RegistrantTitle of each classTrading Symbol(s)NameofeachexchangeonwhichregisteredBXP, Inc.Common Stock, par value $.01per shareBXPNew York Stock Exchange Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the SecuritiesExchange Act of 1934 during 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 filing requirements for the past 90 days. BXP, Inc.:Yes☒No☐Boston Properties Limited Partnership:Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submittedpursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that theregistrant was required to submit such files). BXP, Inc.:Yes☒No☐Boston Properties Limited Partnership:Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smallerreporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reportingcompany,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. BXP, Inc.: Large Accelerated Filer☒AcceleratedFiler☐Non-acceleratedFiler☐SmallerReportingCompany☐Emerging Growth Company☐ Boston Properties Limited Partnership: LargeAcceleratedFiler☐AcceleratedFiler☐Non-accelerated Filer☒SmallerReportingCompany☐Emerging Growth Company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period forcomplying with any new or revised financial accounting standards pursuant to Section 13(a) of the Exchange Act. BXP, Inc.☐Boston Properties Limited Partnership☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of theeffectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by theregistered public accounting firm that prepared or issued its audit report. BXP, Inc.☒Boston Properties Limited Partnership☒ If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statementsof the registrant included in the filing reflect the correction of an error to previously issued financial statements. BXP, Inc.☐Boston Properties Limited Partnership☐ 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’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). BXP, Inc.☐Boston Properties Limited Partnership☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). BXP, Inc.:Yes☐No☒Boston Properties Limited Partnership:Yes☐No☒ As of June30, 2025, the aggregate market value of the 158,043,924 shares of Common Stock held by non-affiliates of BXP, Inc.was $10,663,223,539 based upon the last reported sale price of $67.47 per share on the New York Stock Exchange on June 30, 2025.(For this computation, BXP, Inc. has excluded the market value of all shares of Common Stock reported as beneficially owned byexecutive officers and directors of BXP, Inc.; such exclusion shall not be deemed to constitute an admission that any such person is anaffiliate of BXP, Inc.). As of February20, 2026, there were 158,629,124 shares of Common Stock of BXP, Inc. outstanding. Because no established market for common units of limited partnership of Boston Properties Limited Partnership exists, there is nomarket value for such units. Certain information contained in BXP, Inc.’s Proxy Stateme