BXP 10-K 2024-12-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2024

OR

For the transition period from to

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)

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 Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

BXP, Inc.: Yes ☒ No ☐ Boston Properties Limited Partnership: 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.

BXP, Inc.: Yes ☐ No ☒ Boston Properties Limited Partnership: 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 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 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).

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 smaller reporting company or an 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.

BXP, Inc.:

Large Accelerated Filer ☒ Accelerated Filer ☐ Non-accelerated Filer ☐ Smaller Reporting Company ☐

Emerging Growth Company ☐

Boston Properties Limited Partnership:

Large Accelerated Filer ☐ Accelerated Filer ☐ Non-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 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 the effectiveness of its internal control over 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 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 statements

of 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 June 30, 2024, the aggregate market value of the 156,749,318 shares of Common Stock held by non-affiliates of BXP, Inc. was $9,649,488,016 based upon the last reported sale price of $61.56 per share on the New York Stock Exchange on June 28, 2024. (For this computation, BXP, Inc. has excluded the market value of all shares of Common Stock reported as beneficially owned by executive officers and directors of BXP, Inc.; such exclusion shall not be deemed to constitute an admission that any such person is an affiliate of BXP, Inc.).

As of February 21, 2025, there were 158,209,602 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 no market value for such units.

Certain information contained in BXP, Inc.’s Proxy Statement relating to its Annual Meeting of Stockholders to be held May 20, 2025 is incorporated by reference in Items 10, 11, 12, 13 and 14 of Part III. BXP, Inc. intends to file such Proxy Statement with the Securities and Exchange Commission not later than 120 days after the end of its fiscal year ended December 31, 2024.

EXPLANATORY NOTE

This report combines the Annual Reports on Form 10-K for the fiscal year ended December 31, 2024 of BXP, Inc. and Boston Properties Limited Partnership. Unless stated otherwise or the context otherwise requires, references to “BXP” mean BXP, Inc. (formerly known as Boston Properties, Inc.), a Delaware corporation and real estate investment trust (“REIT”), and references to “BPLP” and the “Operating Partnership” mean Boston Properties Limited Partnership, a Delaware limited partnership. Effective July 1, 2024, BXP amended its certificate of incorporation to change its name from Boston Properties, Inc. to BXP, Inc. BPLP is the entity through which BXP conducts substantially all of its business and owns, either directly or through subsidiaries, substantially all of its assets. BXP is the sole general partner and also a limited partner of BPLP. As the sole general partner of BPLP, BXP has exclusive control of BPLP’s day-to-day management. Therefore, unless stated otherwise or the context requires, references to the “Company,” “we,” “us” and “our” refer collectively to BXP, BPLP and those subsidiaries consolidated by BXP.

As of December 31, 2024, BXP owned an approximate 89.7% ownership interest in BPLP. The remaining approximate 10.3% interest was owned by limited partners. The other limited partners of BPLP (1) contributed their direct or indirect interests in properties to BPLP in exchange for common units of limited partnership interest in BPLP or (2) received long-term incentive plan units of BPLP pursuant to BXP’s stock option and incentive plan, or both. Under the limited partnership agreement of BPLP, unitholders may present their common units of BPLP for redemption at any time (subject to restrictions agreed upon at the time of issuance of the units that may restrict such right for a period of time, generally one year from issuance). Upon presentation of a common unit for redemption, BPLP must redeem the unit for cash equal to the then value of a share of BXP’s common stock. In lieu of a cash redemption by BPLP, however, BXP may elect to acquire any common units so tendered by issuing shares of BXP common stock in exchange for the common units. If BXP so elects, its common stock will be exchanged for common units on a one-for-one basis. This one-for-one exchange ratio is subject to specified adjustments to prevent dilution. BXP generally expects that it will elect to issue its common stock in connection with each such presentation for redemption rather than having BPLP pay cash. With each such exchange or redemption, BXP’s percentage ownership in BPLP will increase. In addition, whenever BXP issues shares of its common stock other than to acquire common units of BPLP, BXP must contribute any net proceeds it receives to BPLP and BPLP must issue to BXP a number of common units of BPLP that equals the number of shares of BXP common stock so issued. This structure is commonly referred to as an umbrella partnership REIT, or UPREIT.

The Company believes that combining the Annual Reports on Form 10-K of BXP and BPLP into this single report:

• enhances investors’ understanding of BXP and BPLP by enabling them to view the business as a whole in the same manner as management views and operates the business;

• eliminates duplicative disclosure and provides a more concise and readable presentation because a substantial portion of the disclosure applies to both BXP and BPLP; and

• creates time and cost efficiencies through the preparation of one combined report instead of two separate reports.

The Company believes it is important to understand the few differences between BXP and BPLP in the context of how BXP and BPLP operate as a consolidated company. The financial results of BPLP are consolidated into the financial statements of BXP. BXP does not have any other significant assets, liabilities or operations, other than its investment in BPLP, nor does it have employees of its own. BPLP, not BXP, generally executes all significant business relationships other than transactions involving the securities of BXP. BPLP holds substantially all of the assets of BXP, including ownership interests in subsidiaries and joint ventures. BPLP conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for the net proceeds from equity issuances by BXP, which are contributed to the capital of BPLP in exchange for common or preferred units of partnership in BPLP, as applicable, BPLP generates all remaining capital required by the Company’s business. These sources include working capital, net cash provided by operating activities, borrowings under its credit facilities, the issuance of secured and unsecured debt and equity securities and proceeds received from the disposition of certain properties and interests in joint ventures.

Shareholders’ equity, partners’ capital and noncontrolling interests are the main areas of difference between the consolidated financial statements of BXP and BPLP. The limited partners of BPLP are accounted for as partners’ capital in BPLP’s financial statements and as noncontrolling interests in BXP’s financial statements. The noncontrolling interests in BPLP’s financial statements include the interests of unaffiliated partners in various

consolidated partnerships. The noncontrolling interests in BXP’s financial statements include the same noncontrolling interests in BPLP and limited partners of BPLP. The differences between shareholders’ equity and partners’ capital result from differences in the equity issued by each of BXP and BPLP.

In addition, the consolidated financial statements of BXP and BPLP differ in total real estate assets resulting from previously applied acquisition accounting by BXP for the issuance of common stock in connection with non-sponsor redemptions of common units of BPLP. This accounting resulted in a step-up of the real estate assets of BXP at the time of such redemptions, resulting in a difference between the net real estate of BXP as compared to BPLP of approximately $236.1 million, or 1.1% at December 31, 2024, and a corresponding difference in depreciation expense, impairment losses and gains on sales of real estate upon the sale of these properties having an allocation of the real estate step-up. The acquisition accounting was nullified on a prospective basis beginning in 2009 as a result of the Company’s adoption of a new accounting standard requiring any subsequent redemptions to be accounted for solely as an equity transaction.

To help investors better understand the key differences between BXP and BPLP, the following items in this report present information separately for BXP and BPLP:

• Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities;

• Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations and Liquidity and Capital Resources, includes information specific to each entity, where applicable;

• Item 8. Financial Statements and Supplementary Data which includes the following specific disclosures for BXP and BPLP:

• Note 2. Summary of Significant Accounting Policies;

• Note 3. Real Estate;

• Note 11. Stockholders’ Equity / Partners’ Capital;

• Note 12. Segment Information; and

• Note 13. Earnings Per Share / Common Unit; and

• Item 15. Financial Statement Schedule—Schedule 3.

This report also includes separate Part II, Item 9A. Controls and Procedures, as well as separate Exhibit 23 consents of the independent registered public accounting firm and Exhibits 31 and 32 certifications for each of BXP and BPLP.

TABLE OF CONTENTS

Summary of Risk Factors

The risk factors detailed in Item 1A titled “Risk Factors” in this Annual Report on Form 10-K are the risks that we believe are material to our investors and a reader should carefully consider them. Those risks are not all of the risks we face and other factors not presently known to us or that we currently believe are immaterial may also affect our business if they occur. The following is a summary of the risk factors detailed in Item 1A:

• Our performance depends upon the economic conditions, particularly the supply and demand characteristics, of our markets—Boston, Los Angeles, New York, San Francisco, Seattle and Washington, DC.

• Market and economic volatility due to adverse economic and political conditions, health crises or dislocations in the credit markets could have a material adverse effect on our results of operations, financial condition and ability to pay dividends and/or distributions.

• Our success depends on key personnel whose continued service is not guaranteed.

• Our performance and value are subject to risks associated with our real estate assets and with the real estate industry, including, without limitation:

• potential difficulties or delays renewing leases or re-leasing space;

• potential sustained changes in client preferences and space utilization from full-time, collective in-person work environments to hybrid or remote work models, which could decrease overall demand for workplaces and cause market rental rates and property values to be negatively impacted;

• potential delays in completion of development and redevelopment projects due to supply chain disruptions and labor shortages; and

• potential increases in costs to maintain, renovate and develop our properties related to inflation.

• We face potential adverse effects from major clients’ bankruptcies or insolvencies.

• Our actual costs to develop properties may exceed our budgeted costs.

• Our use of joint ventures may limit our control over and flexibility with jointly owned investments and other assets we may wish to acquire.

• We face risks associated with the use of debt to fund acquisitions and developments, including refinancing risk.

• Elevated interest rates increase our interest costs on variable rate debt and could adversely impact our ability to re-finance existing debt or sell assets on favorable terms or at all.

• Covenants in our debt agreements could adversely affect our financial condition.

• Our degree of leverage could limit our ability to obtain additional financing or affect the market price of our equity and debt securities.

• We face risks associated with security breaches, incidents, and compromises through cyber attacks, cyber intrusions or otherwise, as well as other significant disruptions of our information technology (IT) networks and related systems.

• We face risks associated with climate change and severe weather events, as well as the regulatory efforts intended to reduce the effects of climate change.

• Potential liability for environmental contamination could result in substantial costs.

• Some potential losses are not covered by insurance.

• Our involvement in legal proceedings and other claims may result in substantial monetary and other costs that have a material adverse effect on our results of operations.

• We face risks associated with BXP’s status as a real estate investment trust (REIT), including, without limitation:

• failure to qualify as a REIT would cause BXP to be taxed as a corporation, which would substantially reduce funds available for payment of dividends;

• possible adverse state and local tax audits and changes in state and local tax laws could result in increased tax costs that could adversely affect our financial condition and results of operations and the amount of cash available for the payment of dividends and distributions to our securityholders; and

• in order to maintain BXP’s REIT status, we may be forced to borrow funds during unfavorable market conditions.

This section contains forward-looking statements. You should refer to the explanation of the qualifications and limitations on forward-looking statements beginning on page 52.

PART I.

General

BXP, a Delaware corporation, is a fully integrated, self-administered and self-managed REIT, and is one of the largest publicly-traded office REITs (based on total market capitalization as of December 31, 2024) in the United States that develops, owns and manages primarily premier workplaces. BXP was formed in 1997 to succeed the real estate development, redevelopment, acquisition, management, operating and leasing businesses associated with the predecessor company founded by Mortimer B. Zuckerman and Edward H. Linde in 1970.

Our properties are concentrated in six dynamic gateway markets—Boston, Los Angeles, New York, San Francisco, Seattle and Washington, DC. At December 31, 2024, we owned or had joint venture interests in a portfolio of 185 commercial real estate properties, aggregating approximately 53.3 million net rentable square feet of primarily premier workplaces, including seven properties under construction/redevelopment totaling approximately 2.3 million net rentable square feet. As of December 31, 2024, our properties consisted of:

• 163 office and life sciences properties (including five properties under construction/redevelopment);

• 14 retail properties (including one property under construction);

• seven residential properties (including one property under construction); and

• one hotel.

We consider premier workplaces to be well-located buildings that are modern structures or have been modernized to compete with newer buildings, are professionally managed and maintained, and offer a number and type of amenities that are in high demand by clients that are focused on the importance of the physical work environment in recruiting and retaining the best and brightest employees. As such, these properties attract creditworthy clients and command upper-tier rental rates in their markets. We do not consider the expression “premier workplaces” a classification of our properties in accordance with any standard listing criteria in the real estate industry. We therefore caution investors that our use and definition of “premier workplaces” may be different than the use and definition of similar expressions and traditional classifications that may be used by other companies.

We are a full-service real estate company, with substantial in-house expertise and resources in acquisitions, development, financing, capital markets, construction management, property management, marketing, leasing, accounting, risk management, tax and legal services. For this reason, we refer to our tenants as “clients” due to the many facets of our continuous engagements with them, which span beyond the usual tenant/landlord relationship. Throughout this Annual Report, we use the terms “tenant” and “client” interchangeably.

BXP manages BPLP as its sole general partner. Our principal executive office and Boston regional office are located at The Prudential Center, 800 Boylston Street, Suite 1900, Boston, Massachusetts 02199 and our telephone number is (617) 236-3300. In addition, we have regional offices at 2800 28th Street, Santa Monica, California 90405, 599 Lexington Avenue, New York, New York 10022, Two Embarcadero Center, San Francisco, California 94111, 1001 Fourth Avenue, Seattle, Washington 98154 and 2200 Pennsylvania Avenue NW, Washington, DC 20037.

Our internet address is http://www.bxp.com. On our website, you can obtain free copies of our Annual Reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, including exhibits, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission, or the SEC. You may also obtain BXP’s and BPLP’s reports by accessing the EDGAR database at the SEC’s website at http://www.sec.gov, or we will furnish an electronic or paper copy of these reports free of charge upon written request to: Investor Relations, BXP, Inc., Prudential Center, 800 Boylston Street, Suite 1900, Boston, Massachusetts 02199. “Boston Properties” is a registered trademark, BXP is a registered trademark, and the “bxp” logo is a registered trademark, in all cases, owned by BPLP.

Boston Properties Limited Partnership

BPLP is a Delaware limited partnership organized in 1997, and the entity through which BXP conducts substantially all of its business and owns, either directly or through subsidiaries, substantially all of its assets. BXP is the sole general partner of BPLP and, as of February 21, 2025, the owner of approximately 89.5% of the economic interests in BPLP. Economic interest was calculated as the number of common partnership units of BPLP

owned by BXP as a percentage of the sum of (1) the actual aggregate number of outstanding common partnership units of BPLP and (2) the number of common units issuable upon conversion of all outstanding long term incentive plan units of BPLP (“LTIP Units”), for which all performance conditions have been satisfied for such conversion. We exclude from (1) and (2) above other LTIP Units issued in the form of Multi-Year Long-Term Incentive Plan Awards in 2023 or later (“MYLTIP Awards”), which remain subject to performance conditions. An LTIP Unit is generally the economic equivalent of a share of BXP’s restricted common stock, although LTIP Units issued in the form of MYLTIP Awards are only entitled to receive one-tenth (1/10th) of the regular quarterly distributions (and no special distributions) prior to being earned.

Transactions During 2024

Acquisitions

On January 8, 2024, we completed the acquisition of our joint venture partner’s 50% economic ownership interest in the joint venture that owns 901 New York Avenue, located in Washington, DC. At acquisition, the total net equity acquired was $20.0 million, which includes $10.0 million in cash that we paid for the joint venture partner's 50% economic ownership interest in the joint venture. The property is subject to existing mortgage indebtedness of approximately $207.1 million (see “Secured Debt” below). The acquisition resulted in us recording a gain upon consolidation of approximately $21.8 million, which is the difference between the fair value of the previously held equity method investment immediately prior to the consolidation of $10.0 million, less our costs basis of approximately $(11.8) million. The gain on consolidation is included within loss from unconsolidated joint ventures in the Consolidated Statement of Operations (See Notes 3, 6 and 7 to the Consolidated Financial Statements). 901 New York Avenue is a premier workplace consisting of approximately 508,000 net rentable square feet.

On December 27, 2024, we completed the acquisition of 725 12th Street, an approximately 300,000 net rentable square foot, 12-story premier workplace located in Washington, DC, for a purchase price, excluding transaction costs, of $34.0 million. The acquisition was completed with available cash. Following the acquisition, we commenced redevelopment of the property. When completed, 725 12th Street is expected to total approximately 320,000 net rentable square feet of office and retail space. The project is 47% pre-leased as of February 21, 2025.

Pending Disposition and Impairment

At March 31, 2024, we evaluated the expected hold period for a portion of our Shady Grove property, consisting of 2 Choke Cherry Road, 2094 Gaither Road and a land parcel, located in Rockville, Maryland. Based on a shorter-than-expected hold period, we reduced the carrying value of a portion of the property that we anticipate selling to a third-party developer to its estimated fair value at March 31, 2024. As a result, each of BXP and BPLP recognized an impairment loss of approximately $13.6 million during the year ended December 31, 2024. Our estimated fair value was based on Level 3 inputs as defined in Accounting Standards

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Set forth below are the risks that we believe are material to our investors and they should be carefully considered. Throughout this section, we refer to the equity and debt securities of both BXP and BPLP as our “securities,” and the investors who own securities of BXP, BPLP or both, as our “securityholders.” These risks are not all of the risks we face and other factors not presently known to us or that we currently believe are immaterial may also affect our business if they occur. This section contains forward-looking statements. You should refer to the explanation of the qualifications and limitations on forward-looking statements beginning on page 52.

Risks Related to Our Business and Operations

Our performance depends upon the economic conditions, particularly the supply and demand characteristics, of our markets—Boston, Los Angeles, New York, San Francisco, Seattle and Washington, DC.

Substantially all of our revenue is derived from properties located in six markets: Boston, Los Angeles, New York, San Francisco, Seattle and Washington, DC. A downturn in the economies of these markets, or the impact that a downturn in the overall national economy may have upon these economies, could result in reduced demand for office space and/or a reduction in rents. Because our portfolio consists primarily of premier workplace buildings (as compared to a more diversified real estate portfolio), a decrease in demand for workplaces in turn could adversely affect our results of operations. Additionally, there are submarkets within our markets that are dependent upon a limited number of industries. For example, in our Washington, DC market, we focus on leasing our properties to governmental contractors and legal firms. In our West Coast market, our leasing is focused on clients in the technology and media industries, as well as legal firms. In addition, in our New York market, we have historically leased properties to financial, legal and other professional firms. A reduction in spending by the Federal Government, sustained changes in space utilization due to remote work models, and/or a significant downturn in one or more of the foregoing sectors have resulted in, and could continue to result in, reduced demand for office space and adversely affect our results of operations.

In addition, a significant economic downturn over a period of time could result in an event or change in circumstances that results in an impairment of a long-lived asset or an “other than temporary” impairment in the value of our investments in unconsolidated joint ventures. For the year ended December 31, 2024, we recognized an impairment of a long-lived asset of approximately $13.6 million and “other than temporary” impairments in the value of three of our investments in unconsolidated joint ventures aggregating approximately $341.3 million. For additional information on these impairments, see Notes 3 and 6 to the Consolidated Financial Statements. Any future impairments could have a material adverse effect on our results of operations in the period in which the charge is taken.

Market and economic volatility due to adverse economic and political conditions, health crises or dislocations in the credit markets could have a material adverse effect on our results of operations, financial condition and ability to pay dividends and/or distributions.

Our business may be adversely affected by market and economic volatility experienced by the U.S. and global economies, the real estate industry as a whole and/or the local economic conditions in the markets in which our properties are located. Such adverse economic and political conditions may include, among other issues, continued inflation, elevated interest rates, policy changes by the new presidential administration, prolonged labor market challenges impacting the recruitment and retention of talent, volatility in the public equity and debt markets, and international economic and other conditions, including pandemics, geopolitical instability and other conditions beyond our control. These current conditions, or similar conditions existing in the future, may adversely affect our results of operations, financial condition and ability to pay dividends and distributions as a result of the following, among other potential consequences:

• federal policy changes by the new presidential administration, such as the implementation of tariffs that could result in global supply chain disruptions and/or continued inflation, which could negatively impact

interest rates, potential changes to U.S. federal tax laws and budgetary changes related to government leases;

• the financial condition of our clients may be adversely affected, which may result in client defaults under leases due to bankruptcy, lack of liquidity, lack of funding, operational failures or for other reasons;

• significant job losses and/or a sustained shift away from collective in-person work environments or relocations away from the markets in which we operate may occur, which could decrease overall demand for workplaces in the regions in which we operate and cause market rental rates and property values to be negatively impacted;

• our inability to borrow on terms and conditions that we find acceptable, or at all, which could reduce our ability to pursue acquisition and development opportunities and refinance existing debt, reduce our returns from our acquisition and development activities and increase our future interest expense;

• reduced values of our properties may limit our ability to dispose of assets at attractive prices or to obtain debt financing secured by our properties and may reduce the availability of unsecured loans;

• the value and liquidity of our short-term investments and cash deposits could be reduced as a result of a deterioration of the financial condition of the institutions that hold our cash deposits or the institutions or assets in which we have made short-term investments, a dislocation of the markets for our short-term investments, increased volatility in market rates for such investments or other factors;

• one or more lenders under our line of credit could refuse to fund their financing commitment to us or could fail and we may not be able to replace the financing commitment of any such lenders on favorable terms, or at all; and

• to the extent we enter into derivative financial instruments, one or more counterparties to our derivative financial instruments could default on their obligations to us, or could fail, increasing the risk that we may not realize the benefits of these instruments.

Our success depends on key personnel whose continued service is not guaranteed.

We depend on the efforts of key personnel, particularly Owen D. Thomas, Chief Executive Officer, Douglas T. Linde, President, Raymond A. Ritchey, Senior Executive Vice President, and Michael E. LaBelle, Executive Vice President, Chief Financial Officer & Treasurer. Among the reasons that Messrs. Thomas, Linde, Ritchey and LaBelle are important to our success is that each has a national reputation, which attracts business and investment opportunities and assists us in negotiations with lenders, joint venture partners and other investors. If we lost their services, our relationships with lenders, potential clients and industry personnel could diminish.

Our Regional Managers also have strong reputations. Their reputations aid us in identifying opportunities, having opportunities brought to us, and negotiating with clients and build-to-suit prospects. While we believe that we could find replacements for these key personnel, the loss of their services could materially and adversely affect our operations because of diminished relationships with lenders, prospective clients and industry personnel.

Risks Related to Real Estate

**Our performance and value are subject to risks associated with our real estate assets and w

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None.

Our information technology (“IT”) networks and related systems are essential to the efficient operation of our business and our ability to perform day-to-day operations (including managing our building systems and accounting for our business operations). In some cases, our clients’ operations depend on our building systems. The risk of a security breach, incident, compromise or disruption, particularly through cyber-attack or cyber intrusion, including by computer hackers, foreign governments and cyber terrorists, has generally increased as the number, intensity and

sophistication of attempted attacks and intrusions from around the world have increased. Like other businesses, we have been, and expect to continue to be, subject to attempts at unauthorized access of our network, mishandling or misuse, computer viruses or malware, cyber-attacks and intrusions and other events of varying degrees. To date, these events have not, individually or in the aggregate, materially affected our operations or business. In addition, we are not aware of any risks from cybersecurity threats, including as a result of any cybersecurity incidents, that have materially affected or are reasonably likely to materially affect our Company, including our business strategy, results of operations, or financial condition. See Item 1A. “Risk Factors” for additional discussion of the cybersecurity risks related to our Company.

Cybersecurity Risk Management & Strategy

We have implemented and maintain a cybersecurity program that is designed to identify, assess and manage risks from cybersecurity threats and was established by reference to the National Institute of Standards and Technology (“NIST”) Cybersecurity Framework. The primary goal of our cybersecurity program is to prevent cybersecurity incidents to the extent feasible, while simultaneously increasing our system resilience in an effort to minimize the business impact should an incident occur. We aim to take an active approach to monitoring and evaluating our cybersecurity threat environment and risk profile as part of our cybersecurity program, which is administered by our information systems (“IS”) department, led by our Senior Vice President, Chief Technology Officer (“CTO”) and Senior Vice President, Chief Information Officer (“CIO,” together with our CTO, “IS Leaders”). Our IS Leaders are primarily responsible for the direction and implementation of technology, applications and security at BXP. Our CTO has extensive technology and program management experience with approximately 40 years of technology experience, 26 years of which have been with BXP and a total of 30 years with publicly-traded REITs. In January 2024, our IS leadership expanded to include our CIO, who has 30 years of technology experience developed across multiple industries, including commercial real estate, in guiding organizations through strategic initiatives that span technology, cybersecurity, and digital transformations.

We maintain written information security policies and procedures, including a Cybersecurity Incident Response Plan (“CIRP”) for incidents involving potential or actual compromises of information security. Our CIRP is overseen by the cyber executive response team, which is chaired by our Vice President, Risk Management and includes representatives from our IS and legal departments. In the event of a cybersecurity incident, we have implemented procedures to (i) mobilize third-party subject matter experts and (ii) notify executive leadership and the Audit Committee and/or the full Board of Directors, in each case, as appropriate.

As part of our overall cybersecurity program, we also conduct:

• Regular assessments of our cybersecurity program. We assess our cybersecurity program against the NIST Cybersecurity Framework through annual internal assessments, and, every two years, we engage a third-party consultant to conduct an additive cyber assessment. These assessments review, among other things, our IT security measures and activities for alignment with the NIST Cybersecurity Framework.

• Periodic penetration testing & vulnerability assessments. On an annual basis, we engage a third-party consultant to conduct two penetration tests per year. We also conduct vulnerability assessments on a monthly basis.

• Regular cybersecurity awareness trainings & simulations. We conduct cybersecurity awareness training for employees and primary on-site providers during onboarding, and thereafter, multiple times per year, and we conduct regular phishing simulations in an effort to raise awareness of spoofed or manipulated electronic communications and other security threats, as well as annual tabletop simulations.

In addition, our internal audit function integrates the assessment and identification of cybersecurity-related risks into our annual overall enterprise risk assessment (“ERA”). The ERA process is designed to assess and identify the key risks that management believes could adversely impact our business operations or impede the achievement of our business objectives, which includes an assessment of our cybersecurity program and the cybersecurity-related risks that we face. To the extent the ERA identifies a heightened cybersecurity-related risk(s), we have implemented a process for the risk(s) to be presented to the Audit Committee and the full Board of Directors, as appropriate.

We utilize certain third-party service providers to perform select functions. These third-party service providers also face cybersecurity threats, and a cybersecurity incident impacting any of our third-party service providers could also indirectly affect our operations, performance and results of operations. We have a data security committee,

consisting of members from various BXP departments, including IS, legal and risk management, that meets periodically to assess, identify and manage cybersecurity risks related to certain third-party service providers and to protect our critical financial and sensitive business information, as well as personally identifiable information (collectively, “Sensitive Information”). The data security committee has implemented processes for evaluating the risk profile of those service providers that handle or have access to Sensitive Information, which informs applicable contractual obligations with these service providers. This evaluation, which occurs prior to onboarding, is designed to consider the nature of the services to be provided, the level of sensitivity and quantity of the information that the service provider handles or has access to, and the identity of the service provider.

Cybersecurity Governance

Our Board of Directors is primarily responsible for risk oversight and discharges its responsibility directly or indirectly through its committees. In general, our risk management is designed to be facilitated through a top-down and bottom-up communication structure whereby the Board and/or its committees provide oversight and direction, and management is charged with the day-to-day management of risks, regular assessment of the risk environment and regular reporting to the Board, which may include management reports and reports from outside advisors and consultants engaged by the Board, a specific committee or management, as appropriate. This overall risk management and oversight framework includes risks related to cybersecurity threats.

Pursuant to its charter, the Audit Committee oversees senior management’s risk management processes related to assessing, identifying and managing cybersecurity risks in an effort to, among other things, help align our risk exposure with our strategic objectives. The Audit Committee meets no less frequently than annually with our IS department to discuss, among other things, recent trends in cyber risks, cybersecurity incidents, if any, and our cybersecurity defense strategy to protect against cyber-attacks and intrusions. These discussions with the Audit Committee are led by our IS Leaders and senior management. The Audit Committee provides regular updates to the full Board of Directors on matters under its purview, including risk management and cybersecurity matters.

At December 31, 2024, we owned or had joint venture interests in 185 commercial real estate properties, aggregating approximately 53.3 million net rentable square feet of primarily premier workplaces, including seven properties under construction/redevelopment totaling approximately 2.3 million net rentable square feet. Our properties consisted of (1) 163 office and life sciences properties (including five properties under construction/redevelopment), (2) 14 retail properties (including one property under construction), (3) seven residential properties (including one property under construction) and (4) one hotel. The table set forth below shows information relating to the properties we owned, or in which we had an ownership interest, at December 31, 2024, and it includes properties held by both consolidated and unconsolidated joint ventures.

(1)Represents signed leases for in-service properties for which revenue recognition has commenced in accordance with accounting principles generally accepted in the United States (“GAAP”).

(2)Property is an unconsolidated joint venture.

(3)Includes 681 Gateway, which is a laboratory/life sciences property.

(4)Property was taken out of service on January 1, 2025.

(5)Property is held for redevelopment.

(6)Percentage occupied is not included in the calculation of the Total Portfolio occupancy rate for In-Service Properties as of December 31, 2024.

(7)Includes 61,511 square feet of retail space that is approximately 79.2% occupied as of December 31, 2024. This amount is not included in the calculation of the Total Portfolio occupancy rate for In-Service Properties as of December 31, 2024.

(8)Represents the weighted-average room occupancy for the year ended December 31, 2024. This amount is not included in the calculation of the Total Portfolio occupancy rate for In-Service Properties as of December 31, 2024.

(9)Includes 4,260 square feet of retail space that is 100% occupied as of December 31, 2024. This amount is not included in the calculation of the Total Portfolio occupancy rate for In-Service Properties as of December 31, 2024.

(10)Represents percentage leased as of February 21, 2025, including leases with future commencement dates.

(11)The property was 30% placed in-service as of December 31, 2024.

(12)The property was 6% placed in-service as of December 31, 2024.

(13)We acquired 725 12th Street, on December 27, 2024 for a purchase price, excluding transaction costs, of $34.0 million. Concurrently with the acquisition, a lease was executed for approximately 152,000 square feet of the redeveloped building.

(14)The property was 27% placed in-service as of December 31, 2024 and fully placed in-service on January 2, 2025.

(15)Total percentage occupied excludes Residential.

Percentage Occupied and Average Annualized Revenue per Square Foot for In-Service Properties

The following table sets forth our percentage occupied and average annualized revenue per square foot on a historical basis for our In-Service Properties.

(1)Represents signed leases, excluding hotel and residential properties, for which revenue recognition has commenced in accordance with GAAP.

(2)Represents the monthly contractual base rents and recoveries from clients under existing leases as of December 31, 2024, 2023, 2022, 2021 and 2020 multiplied by twelve. These annualized amounts are before rent abatements and include expense reimbursements, which may be estimates as of such date. The aggregate amounts of rent abatements per square foot under existing leases as of December 31, 2024, 2023, 2022, 2021 and 2020 for the succeeding twelve-month period were $2.14, $2.47, $1.56, $2.15, and $1.73, respectively.

Top 20 Clients by Square Feet

Our 20 largest clients by square feet as of December 31, 2024 were as follows:

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(1)Amounts are calculated based on our consolidated portfolio square feet, plus our share of the square feet from the unconsolidated joint ventures properties (calculated based on our ownership percentage), minus our partners’ share of square feet from our consolidated joint venture properties (calculated based upon the partners’ percentage ownership interests).

(2)Amount includes approximately 261,046 square feet that expired on December 31, 2024.

Client Diversification

Our client diversification by square feet as of December 31, 2024 was as follows: