EX-99.1 2 q32023supplemental.htm EX-99.1
Exhibit 99.1
Supplemental Operating and Financial Data
for the Quarter Ended September 30, 2023

THE COMPANY

Boston Properties, Inc. (NYSE: BXP) (“BXP” or the “Company”) is the largest publicly traded developer, owner, and manager of premier workplaces in the United States, concentrated in six dynamic gateway markets - Boston, Los Angeles, New York, San Francisco, Seattle, and Washington, DC. BXP has delivered places that power progress for our clients and communities for more than 50 years. BXP is a fully integrated real estate company, organized as a real estate investment trust (REIT). Including properties owned by joint ventures, BXP’s portfolio totals 53.5 million square feet and 190 properties, including 11 properties under construction/redevelopment. BXP’s properties include 169 office properties, 14 retail properties (including two retail properties under construction/redevelopment), six residential properties (including one residential property under construction) and one hotel. BXP is well-known for its in-house building management expertise and responsiveness to clients’ needs. BXP holds a superior track record of developing premium Central Business District (CBD) office buildings, successful mixed-use complexes, suburban office centers and build-to-suit projects for a diverse array of creditworthy clients. BXP actively works to promote its growth and operations in a sustainable and responsible manner. BXP has earned a twelfth consecutive GRESB “Green Star” recognition and the highest GRESB 5-star Rating. BXP, an S&P 500 company, was founded in 1970 by Mortimer B. Zuckerman and Edward H. Linde and became a public company in 1997.
FORWARD-LOOKING STATEMENTS

This Supplemental package contains “forward-looking statements” as defined in the Private Securities Litigation Reform Act of 1995. You can identify these statements by our use of the words “anticipates,” “believes,” “budgeted,” “could,” “estimates,” “expects,” “guidance,” “intends,” “may,” “might,” “plans,” “projects,” “should,” “will,” and similar expressions that do not relate to historical matters. These statements are based on our current plans, expectations, projections and assumptions about future events. You should exercise caution in interpreting and relying on forward-looking statements because they involve known and unknown risks, uncertainties and other factors which are, in some cases, beyond BXP’s control. If our underlying assumptions prove inaccurate, or known or unknown risks or uncertainties materialize, actual results could differ materially from those expressed or implied by the forward-looking statements. These factors include, without limitation, the risks and uncertainties related to the impact of changes in general economic and capital market conditions, including continued inflation, increasing interest rates, supply chain disruptions, labor market disruptions, dislocation and volatility in capital markets, potential longer-term changes in consumer and client behavior resulting from the severity and duration of any downturn in the U.S. or global economy, general risks affecting the real estate industry (including, without limitation, the inability to enter into or renew leases on favorable terms, changes in client preferences and space utilization, dependence on clients’ financial condition, and competition from other developers, owners and operators of real estate), the impact of geopolitical conflicts, the immediate and long-term impact of the outbreak of a highly infectious or contagious disease on our and our clients’ financial condition, results of operations and cash flows (including the impact of actions taken to contain the outbreak or mitigate its impact, the direct and indirect economic effects of the outbreak and containment measures on our clients, and the ability of our clients to successfully operate their businesses), the uncertainties of investing in new markets, the costs and availability of financing, the effectiveness of our interest rate hedging contracts, the ability of our joint venture partners to satisfy their obligations, the effects of local, national and international economic and market conditions, the effects of acquisitions, dispositions and possible impairment charges on our operating results, the impact of newly adopted accounting principles on the Company’s accounting policies and on period-to-period comparisons of financial results, the uncertainties of costs to comply with regulatory changes (including potential costs to comply with the Securities and Exchange Commission’s proposed rules to standardize climate-related disclosures) and other risks and uncertainties detailed from time to time in the Company’s filings with the Securities and Exchange Commission. These forward-looking statements speak only as of the date of issuance of this report and are not guarantees of future results, performance or achievements. BXP does not undertake a duty to update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as otherwise required by law.
NON-GAAP FINANCIAL MEASURES

This Supplemental package includes non-GAAP financial measures, which are accompanied by what the Company considers the most directly comparable financial measures calculated and presented in accordance with GAAP. Quantitative reconciliations of the differences between the most directly comparable GAAP financial measures and the non-GAAP financial measures presented are provided within this Supplemental package. Definitions of these non-GAAP financial measures and statements of the reasons why management believes the non-GAAP measures provide useful information to investors about the Company’s financial condition and results of operations, and, if applicable, the other purposes for which management uses the measures, can be found in the Definitions section of this Supplemental starting on page 55.
The Company also presents “BXP’s Share” of certain of these measures, which are non-GAAP financial measures that are calculated as the consolidated amount calculated in accordance with GAAP, plus the Company’s share of the amount from the Company’s unconsolidated joint ventures (calculated based upon the Company’s percentage ownership interest and, in some cases, after priority allocations), minus the Company’s partners’ share of the amount from the Company’s consolidated joint ventures (calculated based upon the partners’ percentage ownership interests and, in some cases, after income allocation to private REIT shareholders and their share of fees due to the Company). Management believes that presenting “BXP’s Share” of these measures provides useful information to investors regarding the Company’s financial condition and/or results of operations because the Company has several significant joint ventures and, in some cases, the Company exercises significant influence over, but does not control, the joint venture, in which case GAAP requires that the Company account for the joint venture entity using the equity method of accounting and the Company does not consolidate it for financial reporting purposes. In other cases, GAAP requires that the Company consolidate the venture even though the Company’s partner(s) owns a significant percentage interest. As a result, management believes that presenting BXP’s Share of various financial measures in this manner can help investors better understand the Company’s financial condition and/or results of operations after taking into account its true economic interest in these joint ventures. The Company cautions investors that the ownership percentages used in calculating “BXP’s Share” of these measures may not completely and accurately depict all of the legal and economic implications of holding an interest in a consolidated or unconsolidated joint venture. For example, in addition to partners’ interests in profits and capital, venture agreements vary in the allocation of rights regarding decision making (both routine and major decisions), distributions, transferability of interests, financings and guarantees, liquidations and other matters. As a result, presentations of “BXP’s Share” of a financial measure should not be considered a substitute for, and should only be considered together with and as a supplement to, the Company’s financial information presented in accordance with GAAP. Unless noted otherwise, reconciliations of “BXP’s Share” of these financial measures can be found in the Reconciliations section of this Supplemental package starting on page 59.

GENERAL INFORMATION

Corporate Headquarters | Trading Symbol | Investor Relations | Inquiries
800 Boylston Street | BXP | BXP | Inquiries should be directed to
Suite 1900 |  | 800 Boylston Street, Suite 1900 | Helen Han
Boston, MA 02199 | Stock Exchange Listing | Boston, MA 02199 | Vice President, Investor Relations
www.bxp.com | New York Stock Exchange | investors.bxp.com | at 617.236.3429 or
(t) 617.236.3300 |  | investorrelations@bxp.com | hhan@bxp.com
|  | (t) 617.236.3429 |
|  |  | Michael E. LaBelle
|  |  | Executive Vice President, Chief Financial Officer
|  |  | at 617.236.3352 or
|  |  | mlabelle@bxp.com

(Cover photo: 751 Gateway, South San Francisco, CA)

| Q3 2023
Table of contents

| Page
OVERVIEW |
Company Profile | 1
Guidance and assumptions | 2
FINANCIAL INFORMATION |
Financial Highlights | 3
Consolidated Balance Sheets | 5
Consolidated Income Statements | 6
Funds From Operations (FFO) | 7
Funds Available for Distribution (FAD) | 8
Net Operating Income (NOI) | 9
Same Property Net Operating Income (NOI) by Reportable Segment | 11
Capital Expenditures, Tenant Improvement Costs and Leasing Commissions | 12
Acquisitions and Dispositions | 13
DEVELOPMENT ACTIVITY |
Construction in Progress | 14
Land Parcels and Purchase Options | 16
LEASING ACTIVITY |
Leasing Activity | 17
PROPERTY STATISTICS |
Portfolio Overview | 18
Residential and Hotel Performance | 19
In-Service Property Listing | 21
Top 20 Clients Listing and Portfolio Client Diversification | 25
Occupancy by Location | 26
DEBT AND CAPITALIZATION |
Capital Structure | 27
Debt Analysis | 28
Senior Unsecured Debt Covenant Compliance Ratios | 29
Net Debt to EBITDA re | 30
Debt Ratios | 31
JOINT VENTURES |
Consolidated Joint Ventures | 32
Unconsolidated Joint Ventures | 34
LEASE EXPIRATION ROLL-OUT |
Total In-Service Properties | 37
Boston | 38
Los Angeles | 40
New York | 42
San Francisco | 44
Seattle | 46
Washington, DC | 48
CBD | 50
Suburban | 52
RESEARCH COVERAGE, DEFINITIONS AND RECONCILIATIONS |
Research Coverage | 54
Definitions | 55
Reconciliations | 59
Consolidated Income Statement - Prior Year | 67

| Q3 2023
Company profile

SNAPSHOT

(as of September 30, 2023)

Fiscal Year-End | December 31
Total Properties (includes unconsolidated joint ventures and properties under development/redevelopment) | 190
Total Square Feet (includes unconsolidated joint ventures and properties under development/redevelopment) | 53.5 million
Common shares outstanding, plus common units and LTIP units (other than unearned Multi-Year Long-Term Incentive Program (MYLTIP) Units) on an as-converted basis 1, 2 | 175.5 million
Closing Price, at the end of the quarter | $59.48 per share
Dividend - Quarter/Annualized | $0.98/$3.92 per share
Dividend Yield | 6.6%
Consolidated Market Capitalization 2 | $25.4 billion
BXP’s Share of Market Capitalization 2, 3 | $25.6 billion
Unsecured Senior Debt Ratings | BBB+ (S&P); Baa1 (Moody’s)

STRATEGY

BXP’s primary business objective is to maximize return on investment in an effort to provide its investors with the greatest possible total return in all points of the economic cycle. To achieve this objective, the key tenets of our business strategy are to:
•continue to embrace our leadership position in the premier workplace segment and leverage our strength in portfolio quality, client relationships, development skills, market penetration, and sustainability to profitably build market share;
•maintain a keen focus on select dynamic gateway markets that exhibit the strongest economic growth and investment characteristics over time - currently Boston, Los Angeles, New York, San Francisco, Seattle, and Washington, DC;
•invest in the highest quality buildings (primarily premier workplaces) with unique amenities and desirable locations that are able to maintain high occupancy rates and achieve premium rental rates through economic cycles;
•maintain scale and a full-service real estate capability (leasing, development, construction, marketing, legal, and property management) in our markets to ensure we (1) see all relevant investment deal flow, (2) maintain an ability to execute on all types of real estate opportunities, such as acquisitions, dispositions, repositioning and development, throughout the real estate investment cycle, (3) provide superior service to our clients and (4) develop and manage our assets in the most sustainable manner possible;
•pursue attractive asset class adjacencies where we have a track record of success, such as life sciences and residential development;
•maintain a leadership position in sustainability innovation to minimize emissions from BXP’s development and in-service portfolio, as well as to provide clients sustainable solutions for their space use needs;
•ensure a strong balance sheet to maintain consistent access to capital and the ability to make new investments at opportune times; and
•foster a culture and reputation of integrity, excellence and purposefulness, making us the employer of choice for talented real estate professionals, the landlord and developer of choice for our clients, as well as the counterparty of choice for real estate industry participants.
MANAGEMENT

Board of Directors |  |
Owen D. Thomas | Chairman of the Board |  | Owen D. Thomas | Chief Executive Officer
Douglas T. Linde |  |  | Douglas T. Linde | President
Joel I. Klein | Lead Independent Director |  | Raymond A. Ritchey | Senior Executive Vice President
|  |  | Michael E. LaBelle | Executive Vice President, Chief Financial Officer and Treasurer
Kelly A. Ayotte |  |  | Donna D. Garesche | Executive Vice President, Chief Human Resources Officer
Bruce W. Duncan | Chair of Compensation Committee |  | Bryan J. Koop | Executive Vice President, Boston Region
Carol B. Einiger |  |  | Robert E. Pester | Executive Vice President, San Francisco Region
Diane J. Hoskins | Chair of Sustainability Committee |  | Hilary Spann | Executive Vice President, New York Region
Mary E. Kipp | Chair of Audit Committee |  | Peter V. Otteni | Executive Vice President, Co-Head of the Washington, DC
Matthew J. Lustig | Chair of Nominating & Corporate |  |  | Region
| Governance Committee |  | John J. Stroman | Executive Vice President, Co-Head of the Washington, DC
William H. Walton, III |  |  |  | Region
Derek A. (Tony) West |  |  | Rodney C. Diehl | Senior Vice President, Co-Head of the West Coast Regions
|  |  | Eric G. Kevorkian | Senior Vice President, Chief Legal Officer and Secretary
|  |  | Michael R. Walsh | Senior Vice President, Chief Accounting Officer
|  |  | James J. Whalen | Senior Vice President, Chief Information & Technology Officer

___________________
1 Common units and LTIP units are units of limited partnership interest in Boston Properties Limited Partnership, the entity through which the Company conducts substantially all of its business.
2 For additional detail, see page 27.
3 For the Company’s definitions and related disclosures, see the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
1

| Q3 2023
Guidance and assumptions

GUIDANCE

BXP’s guidance for the full year 2023 for diluted earnings per common share attributable to Boston Properties, Inc. (EPS) and diluted funds from operations (FFO) per common share attributable to Boston Properties, Inc. is set forth and reconciled below. Except as described below, the estimates reflect management’s view of current and future market conditions, including assumptions with respect to rental rates, occupancy levels, interest rates, the timing of the lease-up of available space, the timing of development cost outlays and development deliveries, and the earnings impact of the events referenced in the Company’s earnings release issued on November 1, 2023 and those referenced during the related conference call. The estimates do not include (1) possible future gains or losses or the impact on operating results from other possible future property acquisitions or dispositions, (2) the impacts of any other capital markets activity, (3) future write-offs or reinstatements of accounts receivable and accrued rent balances, or (4) future impairment charges. EPS estimates may be subject to fluctuations as a result of several factors, including changes in the recognition of depreciation and amortization expense, impairment losses on depreciable real estate, and any gains or losses associated with disposition activity. BXP is not able to assess at this time the potential impact of these factors on projected EPS. By definition, FFO does not include real estate-related depreciation and amortization, impairment losses on depreciable real estate, or gains or losses associated with disposition activities. For a complete definition of FFO and statements of the reasons why management believes it provides useful information to investors, see page 57. There can be no assurance that BXP’s actual results will not differ materially from the estimates set forth below.

|  |  |  | Full Year 2023 |  |
|  |  |  | Low |  | High |  |  |  |
Projected EPS (diluted) |  | $ | 1.05 |  |  | $ | 1.07 |  |  |  |  |
| Add: |  |  |  |  |  |  |  |  |
|  | Projected Company share of real estate depreciation and amortization |  | 4.85 |  |  | 4.85 |  |  |  |  |
|  | Projected Company share of (gains)/losses on sales of real estate, gain on investment from unconsolidated joint venture and impairments |  | 1.35 |  |  | 1.35 |  |  |  |  |
Projected FFO per share (diluted) |  | $ | 7.25 |  |  | $ | 7.27 |  |  |  |  |

ASSUMPTIONS
(dollars in thousands)

|  |  | Full Year 2023 |  |
|  |  | Low |  | High |  |  |  |
Operating property activity: |  |  |  |  |  |  |  |
| Average In-service portfolio occupancy |  | 88.00 | % |  | 89.00 | % |  |  |  |
| Increase in BXP’s Share of Same Property net operating income (excluding termination income) |  | — | % |  | 0.50 | % |  |  |  |
| Increase in BXP’s Share of Same Property net operating income - cash (excluding termination income) |  | 1.50 | % |  | 2.50 | % |  |  |  |
| BXP’s Share of Non Same Properties’ incremental contribution to net operating income over prior year (excluding asset sales) |  | $ | 100,000 |  |  | $ | 105,000 |  |  |  |  |
| BXP’s Share of incremental net operating income related to asset sales over prior year |  | $ | (30,000) |  |  | $ | (28,000) |  |  |  |  |
| BXP’s Share of straight-line rent and fair value lease revenue (non-cash revenue) |  | $ | 115,000 |  |  | $ | 125,000 |  |  |  |  |
| Termination income |  | $ | 9,000 |  |  | $ | 11,000 |  |  |  |  |
Other revenue (expense): |  |  |  |  |  |  |  |
| Development, management services and other revenue |  | $ | 36,000 |  |  | $ | 38,000 |  |  |  |  |
| General and administrative expense 1 |  | $ | (164,000) |  |  | $ | (157,000) |  |  |  |  |
| Consolidated net interest expense 2 |  | $ | (520,000) |  |  | $ | (510,000) |  |  |  |  |
Noncontrolling interest: |  |  |  |  |  |  |  |
| Noncontrolling interest in property partnerships’ share of FFO |  | $ | (154,000) |  |  | $ | (151,000) |  |  |  |  |

_______________
1 Excludes estimated changes in the market value of the Company’s deferred compensation plan and gains (losses) from investments in securities.
2 Excludes $(97M) - $(94M) for full year 2023 of BXP’s share of projected interest expense from unconsolidated joint ventures.
2

| Q3 2023
Financial highlights

(unaudited and in thousands, except ratios and per share amounts)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 104,299 |
Net income (loss) attributable to Boston Properties, Inc. per share - diluted |  | $ | (0.71) |  |  | $ | 0.66 |
FFO attributable to Boston Properties, Inc. 1 |  | $ | 292,822 |  |  | $ | 292,844 |
Diluted FFO per share 1 |  | $ | 1.86 |  |  | $ | 1.86 |
Dividends per common share |  | $ | 0.98 |  |  | $ | 0.98 |
Funds available for distribution to common shareholders and common unitholders (FAD) 2 |  | $ | 210,044 |  |  | $ | 248,588 |
Selected items: |  |  |  |
Revenue |  | $ | 824,283 |  |  | $ | 817,153 |
Recoveries from clients |  | $ | 134,599 |  |  | $ | 129,528 |
Service income from clients |  | $ | 2,870 |  |  | $ | 2,846 |
BXP’s Share of revenue 3 |  | $ | 808,803 |  |  | $ | 805,187 |
BXP’s Share of straight-line rent 3 |  | $ | 16,647 |  |  | $ | 24,927 |
BXP’s Share of fair value lease revenue 3, 4 |  | $ | 3,907 |  |  | $ | 6,776 |
BXP’s Share of termination income 3 |  | $ | 2,935 |  |  | $ | 3,225 |
Ground rent expense |  | $ | 3,589 |  |  | $ | 3,441 |
Capitalized interest |  | $ | 9,676 |  |  | $ | 10,564 |
Capitalized wages |  | $ | 4,416 |  |  | $ | 4,580 |
Loss from unconsolidated joint ventures 5 |  | $ | (247,556) |  |  | $ | (6,668) |
BXP’s share of FFO from unconsolidated joint ventures 6 |  | $ | 14,957 |  |  | $ | 19,088 |
Net income attributable to noncontrolling interests in property partnerships |  | $ | 20,909 |  |  | $ | 19,768 |
FFO attributable to noncontrolling interests in property partnerships 7 |  | $ | 39,083 |  |  | $ | 37,626 |
Balance Sheet items: |  |  |  |
Above-market rents (included within Prepaid Expenses and Other Assets) |  | $ | 3,196 |  |  | $ | 3,516 |
Below-market rents (included within Other Liabilities) |  | $ | 38,049 |  |  | $ | 42,516 |
Accrued rental income liability (included within Other Liabilities) |  | $ | 107,462 |  |  | $ | 123,212 |
Ratios: |  |  |  |
Interest Coverage Ratio (excluding capitalized interest) 8 |  | 3.00 |  |  | 3.18 |
Interest Coverage Ratio (including capitalized interest) 8 |  | 2.79 |  |  | 2.93 |
Fixed Charge Coverage Ratio 8 |  | 2.53 |  |  | 2.54 |
BXP’s Share of Net Debt to BXP’s Share of EBITDA re (Annualized) 9 |  | 7.28 |  |  | 7.31 |
Change in BXP’s Share of Same Store Net Operating Income (NOI) (excluding termination income) 10 |  | (0.3) | % |  | 0.0 | %
Change in BXP’s Share of Same Store NOI (excluding termination income) - cash 10 |  | 1.7 | % |  | 2.2 | %
FAD Payout Ratio 2 |  | 81.94 | % |  | 69.23 | %
Operating Margins [(rental revenue - rental expense)/rental revenue] |  | 62.4 | % |  | 63.1 | %
Occupancy % of In-Service Properties 11 |  | 88.8 | % |  | 88.3 | %
Leased % of In-Service Properties 12 |  | 90.4 | % |  | 90.4 | %
Capitalization: |  |  |  |
Consolidated Debt |  | $ | 14,961,715 |  |  | $ | 15,456,205 |
BXP’s Share of Debt 13 |  | $ | 15,120,033 |  |  | $ | 15,706,496 |
Consolidated Market Capitalization |  | $ | 25,401,704 |  |  | $ | 25,563,883 |
Consolidated Debt/Consolidated Market Capitalization |  | 58.90 | % |  | 60.46 | %
BXP’s Share of Market Capitalization 13 |  | $ | 25,560,022 |  |  | $ | 25,814,174 |
BXP’s Share of Debt/BXP’s Share of Market Capitalization 13 |  | 59.16 | % |  | 60.84 | %

_____________
1 For a quantitative reconciliation of FFO attributable to Boston Properties, Inc. and Diluted FFO per share, see page 7.
2 For a quantitative reconciliation of FAD, see page 8. FAD Payout Ratio equals distributions to common shareholders and unitholders (excluding any special distributions) divided by FAD.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 Represents the net adjustment for above- and below-market leases that are amortized over the terms of the respective leases in place at the property acquisition dates.
5 For the three months ended September 30, 2023, includes an impairment charge totaling approximately $272.6 million related to the Company’s investment in four unconsolidated joint ventures, partially offset by a gain of approximately $35.8 million related to the Company’s investment in Metropolitan Square, see page 34.
6 For a quantitative reconciliation for the three months ended September 30, 2023, see page 36.
7 For a quantitative reconciliation for the three months ended September 30, 2023, see page 33.
8 For a quantitative reconciliation for the three months ended September 30, 2023 and June 30, 2023, see page 31.
3

| Q3 2023
Financial highlights (continued)

9 For a quantitative reconciliation for the three months ended September 30, 2023 and June 30, 2023, see page 30.
10 For a quantitative reconciliation for the three months ended September 30, 2023 and June 30, 2023, see pages 11, 65 and 66.
11 Represents signed leases for which revenue recognition has commenced in accordance with GAAP. Excludes hotel and residential properties.
12 Represents signed leases for which revenue recognition has commenced in accordance with GAAP and signed leases for vacant space with future commencement dates. Excludes hotel and residential properties.
13 For a quantitative reconciliation for September 30, 2023, see page 27.
4

| Q3 2023
Consolidated Balance Sheets

(unaudited and in thousands)

|  | 30-Sep-23 |  | 30-Jun-23
ASSETS |  |  |  |
Real estate |  | $ | 24,809,369 |  |  | $ | 24,642,681 |
Construction in progress |  | 551,330 |  |  | 482,850 |
Land held for future development |  | 670,691 |  |  | 637,191 |
Right of use assets - finance leases |  | 237,532 |  |  | 237,526 |
Right of use assets - operating leases 1 |  | 322,790 |  |  | 166,421 |
Less accumulated depreciation |  | (6,723,616) |  |  | (6,568,568) |
Total real estate |  | 19,868,096 |  |  | 19,598,101 |
Cash and cash equivalents |  | 882,647 |  |  | 1,581,575 |
Cash held in escrows |  | 47,741 |  |  | 46,915 |
Investments in securities |  | 32,809 |  |  | 33,481 |
Tenant and other receivables, net |  | 123,138 |  |  | 91,968 |
Related party note receivable, net |  | 88,807 |  |  | 88,834 |
Sales-type lease receivable, net |  | 13,475 |  |  | 13,250 |
Accrued rental income, net |  | 1,331,796 |  |  | 1,318,320 |
Deferred charges, net |  | 692,386 |  |  | 710,820 |
Prepaid expenses and other assets |  | 121,431 |  |  | 77,457 |
Investments in unconsolidated joint ventures |  | 1,536,822 |  |  | 1,780,959 |
Total assets |  | $ | 24,739,148 |  |  | $ | 25,341,680 |
LIABILITIES AND EQUITY |  |  |  |
Liabilities: |  |  |  |
Mortgage notes payable, net |  | $ | 3,275,974 |  |  | $ | 3,274,764 |
Unsecured senior notes, net |  | 10,488,568 |  |  | 10,985,395 |
Unsecured line of credit |  | — |  |  | — |
Unsecured term loan, net |  | 1,197,173 |  |  | 1,196,046 |
Lease liabilities - finance leases |  | 253,178 |  |  | 251,874 |
Lease liabilities - operating leases 1 |  | 341,299 |  |  | 204,826 |
Accounts payable and accrued expenses |  | 462,240 |  |  | 434,574 |
Dividends and distributions payable |  | 171,916 |  |  | 171,465 |
Accrued interest payable |  | 128,422 |  |  | 111,088 |
Other liabilities |  | 380,014 |  |  | 418,813 |
Total liabilities |  | 16,698,784 |  |  | 17,048,845 |
Commitments and contingencies |  | — |  |  | — |
Redeemable deferred stock units |  | 6,788 |  |  | 6,292 |
Equity: |  |  |  |
Stockholders’ equity attributable to Boston Properties, Inc.: |  |  |  |
Excess stock, $0.01 par value, 150,000,000 shares authorized, none issued or outstanding |  | — |  |  | — |
Common stock, $0.01 par value, 250,000,000 shares authorized, 157,018,080 and 156,932,300 issued and 156,939,180 and 156,853,400 outstanding at September 30, 2023 and June 30, 2023, respectively |  | 1,569 |  |  | 1,569 |
Additional paid-in capital |  | 6,568,645 |  |  | 6,561,161 |
Dividends in excess of earnings |  | (782,275) |  |  | (516,550) |
Treasury common stock at cost, 78,900 shares at September 30, 2023 and June 30, 2023 |  | (2,722) |  |  | (2,722) |
Accumulated other comprehensive income (loss) |  | 2,866 |  |  | (3,406) |
Total stockholders’ equity attributable to Boston Properties, Inc. |  | 5,788,083 |  |  | 6,040,052 |
Noncontrolling interests: |  |  |  |
Common units of the Operating Partnership |  | 656,587 |  |  | 689,123 |
Property partnerships |  | 1,588,906 |  |  | 1,557,368 |
Total equity |  | 8,033,576 |  |  | 8,286,543 |
Total liabilities and equity |  | $ | 24,739,148 |  |  | $ | 25,341,680 |

_____________
1 On August 1, 2023, the Company recorded approximately $160.1 million and $134.5 million of Right of Use Assets – Operating Leases and Lease Liabilities – Operating Leases, respectively, related to the 99-year ground lease in New York City with the Metropolitan Square Transportation Authority. For additional details, see page 16.
5

| Q3 2023
Consolidated Income Statements

(unaudited and in thousands, except per share amounts)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Revenue |  |  |  |
Lease |  | $ | 767,181 |  |  | $ | 761,733 |
Parking and other |  | 29,649 |  |  | 26,054 |
Insurance proceeds |  | 779 |  |  | 930 |
Hotel revenue |  | 13,484 |  |  | 13,969 |
Development and management services |  | 9,284 |  |  | 9,858 |
Direct reimbursements of payroll and related costs from management services contracts |  | 3,906 |  |  | 4,609 |
Total revenue |  | 824,283 |  |  | 817,153 |
Expenses |  |  |  |
Operating |  | 159,923 |  |  | 150,735 |
Real estate taxes |  | 140,368 |  |  | 137,566 |
Demolition costs |  | (619) |  |  | 738 |
Restoration expenses related to insurance claims |  | 520 |  |  | 1,997 |
Hotel operating |  | 9,020 |  |  | 8,161 |
General and administrative 1 |  | 31,410 |  |  | 44,175 |
Payroll and related costs from management services contracts |  | 3,906 |  |  | 4,609 |
Transaction costs |  | 751 |  |  | 308 |
Depreciation and amortization |  | 207,435 |  |  | 202,577 |
Total expenses |  | 552,714 |  |  | 550,866 |
Other income (expense) |  |  |  |
Loss from unconsolidated joint ventures 2 |  | (247,556) |  |  | (6,668) |
Gains on sales of real estate |  | 517 |  |  | — |
Gains (losses) from investments in securities 1 |  | (925) |  |  | 1,571 |
Unrealized gain (loss) on non-real estate investment |  | (51) |  |  | 124 |
Interest and other income (loss) |  | 20,715 |  |  | 17,343 |
Interest expense |  | (147,812) |  |  | (142,473) |
Net income (loss) |  | (103,543) |  |  | 136,184 |
Net (income) loss attributable to noncontrolling interests |  |  |  |
Noncontrolling interest in property partnerships |  | (20,909) |  |  | (19,768) |
Noncontrolling interest - common units of the Operating Partnership 3 |  | 12,626 |  |  | (12,117) |
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 104,299 |
INCOME PER SHARE OF COMMON STOCK (EPS) |  |  |  |
Net income (loss) attributable to Boston Properties, Inc. per share - basic |  | $ | (0.71) |  |  | $ | 0.67 |
Net income (loss) attributable to Boston Properties, Inc. per share - diluted |  | $ | (0.71) |  |  | $ | 0.66 |

_____________
1 Includes $(0.9) million and $1.6 million for the three months ended September 30, 2023 and June 30, 2023, respectively, related to the Company’s deferred compensation plan.
2 For the three months ended September 30, 2023, includes an impairment charge totaling approximately $272.6 million related to the Company’s investment in four unconsolidated joint ventures, partially offset by a gain of approximately $35.8 million related to the Company’s investment in Metropolitan Square, see page 34.
3 Fo r additional detail, see page 7.
6

| Q3 2023
Funds from operations (FFO) 1

(unaudited and dollars in thousands, except per share amounts)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 104,299 |
Add: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | (12,626) |  |  | 12,117 |
Noncontrolling interests in property partnerships |  | 20,909 |  |  | 19,768 |
Net income (loss) |  | (103,543) |  |  | 136,184 |
Add: |  |  |  |
Depreciation and amortization expense |  | 207,435 |  |  | 202,577 |
Noncontrolling interests in property partnerships' share of depreciation and amortization 2 |  | (18,174) |  |  | (17,858) |
BXP's share of depreciation and amortization from unconsolidated joint ventures 3 |  | 25,666 |  |  | 25,756 |
Corporate-related depreciation and amortization |  | (446) |  |  | (442) |
Impairment losses included within loss from unconsolidated joint ventures 4 |  | 272,603 |  |  | — |
Less: |  |  |  |
Gains on sales of real estate |  | 517 |  |  | — |
Gain on investment included within loss from unconsolidated joint ventures 4 |  | 35,756 |  |  | — |
Unrealized gain (loss) on non-real estate investment |  | (51) |  |  | 124 |
Noncontrolling interests in property partnerships |  | 20,909 |  |  | 19,768 |
FFO attributable to the Operating Partnership (including Boston Properties, Inc.) (Basic FFO) |  | 326,410 |  |  | 326,325 |
Less: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership’s share of FFO |  | 33,588 |  |  | 33,481 |
FFO attributable to Boston Properties, Inc. |  | $ | 292,822 |  |  | $ | 292,844 |
Boston Properties, Inc.’s percentage share of Basic FFO |  | 89.71 | % |  | 89.74 | %
Noncontrolling interest’s - common unitholders percentage share of Basic FFO |  | 10.29 | % |  | 10.26 | %
Basic FFO per share |  | $ | 1.87 |  |  | $ | 1.87 |
Weighted average shares outstanding - basic |  | 156,880 |  |  | 156,826 |
Diluted FFO per share |  | $ | 1.86 |  |  | $ | 1.86 |
Weighted average shares outstanding - diluted |  | 157,269 |  |  | 157,218 |

RECONCILIATION TO DILUTED FFO

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Basic FFO |  | $ | 326,410 |  |  | $ | 326,325 |
Add: |  |  |  |
Effect of dilutive securities - stock-based compensation |  | — |  |  | — |
Diluted FFO |  | 326,410 |  |  | 326,325 |
Less: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership’s share of diluted FFO |  | 33,522 |  |  | 33,383 |
Boston Properties, Inc.’s share of Diluted FFO |  | $ | 292,888 |  |  | $ | 292,942 |

RECONCILIATION OF SHARES/UNITS FOR DILUTED FFO

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Shares/units for Basic FFO |  | 174,882 |  |  | 174,748 |
Add: |  |  |  |
Effect of dilutive securities - stock-based compensation (shares/units) |  | 389 |  |  | 392 |
Shares/units for Diluted FFO |  | 175,271 |  |  | 175,140 |
Less: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership’s share of Diluted FFO (shares/units) |  | 18,002 |  |  | 17,922 |
Boston Properties, Inc.’s share of shares/units for Diluted FFO |  | 157,269 |  |  | 157,218 |
Boston Properties, Inc.’s percentage share of Diluted FFO |  | 89.73 | % |  | 89.77 | %

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 For a quantitative reconciliation for the three months ended September 30, 2023, see page 33.
3 For a quantitative reconciliation for the three months ended September 30, 2023, see page 36.
4 For additional information for the three months ended September 30, 2023, see page 34.
7

| Q3 2023
Funds available for distributions (FAD) 1

(dollars in thousands)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 104,299 |
Add: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | (12,626) |  |  | 12,117 |
Noncontrolling interests in property partnerships |  | 20,909 |  |  | 19,768 |
Net income (loss) |  | (103,543) |  |  | 136,184 |
Add: |  |  |  |
Depreciation and amortization expense |  | 207,435 |  |  | 202,577 |
Noncontrolling interests in property partnerships’ share of depreciation and amortization 2 |  | (18,174) |  |  | (17,858) |
BXP’s share of depreciation and amortization from unconsolidated joint ventures 3 |  | 25,666 |  |  | 25,756 |
Corporate-related depreciation and amortization |  | (446) |  |  | (442) |
Impairment losses included within loss from unconsolidated joint ventures 4 |  | 272,603 |  |  | — |
Less: |  |  |  |
Gains on sales of real estate |  | 517 |  |  | — |
Gain on investment included within loss from unconsolidated joint ventures 4 |  | 35,756 |  |  | — |
Unrealized gain (loss) on non-real estate investment |  | (51) |  |  | 124 |
Noncontrolling interests in property partnerships |  | 20,909 |  |  | 19,768 |
Basic FFO |  | 326,410 |  |  | 326,325 |
Add: |  |  |  |
BXP’s Share of lease transaction costs that qualify as rent inducements 1, 5 |  | (5,963) |  |  | 3,231 |
BXP’s Share of hedge amortization, net of costs 1 |  | (473) |  |  | 1,750 |
BXP’s share of fair value interest adjustment 1 |  | 499 |  |  | 499 |
BXP’s Share of straight-line ground rent expense adjustment 1, 6 |  | 854 |  |  | 811 |
Stock-based compensation |  | 4,843 |  |  | 14,935 |
Non-real estate depreciation |  | 446 |  |  | 442 |
Unearned portion of capitalized fees from consolidated joint ventures 7 |  | 1,283 |  |  | 957 |
Less: |  |  |  |
BXP’s Share of straight-line rent 1 |  | 16,647 |  |  | 24,927 |
BXP’s Share of fair value lease revenue 1, 8 |  | 3,907 |  |  | 6,776 |
BXP’s Share of 2nd generation tenant improvements and leasing commissions 1 |  | 79,932 |  |  | 43,992 |
BXP’s Share of maintenance capital expenditures 1, 9 |  | 16,995 |  |  | 24,132 |
Amortization and accretion related to sales type lease |  | 233 |  |  | 229 |
Hotel improvements, equipment upgrades and replacements |  | 141 |  |  | 306 |
Funds available for distribution to common shareholders and common unitholders (FAD) (A) |  | $ | 210,044 |  |  | $ | 248,588 |
Distributions to common shareholders and unitholders (excluding any special distributions) (B) |  | $ | 172,101 |  |  | $ | 172,092 |
FAD Payout Ratio 1 (B÷A) |  | 81.94 | % |  | 69.23 | %

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 For a quantitative reconciliation for the three months ended September 30, 2023, see page 33.
3 For a quantitative reconciliation for the three months ended September 30, 2023, see page 36.
4 For additional information for the three months ended September 30, 2023, see page 34.
5 Consists of lease transaction costs that qualify as rent inducements in accordance with GAAP. Lease transaction costs are generally included in 2nd generation tenant improvements and leasing commissions in the period the lease commences.
6 Includes the straight-line impact of the Company’s 99-year ground and air rights lease related to the Company’s 100 Clarendon Street garage and Back Bay Transit Station. The Company has allocated contractual ground lease payments aggregating approximately $34.4 million, which it expects to incur by the end of 2025 with no payments thereafter. The Company is recognizing this expense on a straight-line basis over the 99-year term of the ground and air rights lease, see page 3.
7 See page 61 for additional information.
8 Represents the net adjustment for above- and below-market leases that are amortized over the terms of the respective leases in place at the property acquisition dates.
9 Maintenance capital expenditures do not include capital expenditures that are planned at the time of acquisition or capital expenditures incurred in connection with repositioning activities.
8

| Q3 2023
Reconciliation of net income (loss) attributable to Boston Properties, Inc. to BXP’s Share of same property net operating income (NOI)

(in thousands)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Sep-22
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 360,977 |
Net (income) loss attributable to noncontrolling interests |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | (12,626) |  |  | 40,883 |
Noncontrolling interest in property partnerships |  | 20,909 |  |  | 18,801 |
Net income (loss) |  | (103,543) |  |  | 420,661 |
Add: |  |  |  |
Interest expense |  | 147,812 |  |  | 111,846 |
Losses from investments in securities |  | 925 |  |  | 1,571 |
Loss from unconsolidated joint ventures |  | 247,556 |  |  | 3,524 |
Depreciation and amortization expense |  | 207,435 |  |  | 190,675 |
Transaction costs |  | 751 |  |  | 1,650 |
Payroll and related costs from management services contracts |  | 3,906 |  |  | 3,900 |
General and administrative expense |  | 31,410 |  |  | 32,519 |
Less: |  |  |  |
Interest and other income (loss) |  | 20,715 |  |  | 3,728 |
Unrealized loss on non-real estate investment |  | (51) |  |  | — |
Gains on sales of real estate |  | 517 |  |  | 262,345 |
Direct reimbursements of payroll and related costs from management services contracts |  | 3,906 |  |  | 3,900 |
Development and management services revenue |  | 9,284 |  |  | 7,465 |
Net Operating Income (NOI) |  | 501,881 |  |  | 488,908 |
Add: |  |  |  |
BXP’s share of NOI from unconsolidated joint ventures 1 |  | 39,165 |  |  | 35,316 |
Less: |  |  |  |
Partners’ share of NOI from consolidated joint ventures (after income allocation to private REIT shareholders) 2 |  | 50,047 |  |  | 48,306 |
BXP’s Share of NOI |  | 490,999 |  |  | 475,918 |
Less: |  |  |  |
Termination income |  | 2,564 |  |  | 1,980 |
BXP’s share of termination income from unconsolidated joint ventures 1 |  | 500 |  |  | 500 |
Add: |  |  |  |
Partners’ share of termination income from consolidated joint ventures 2 |  | 129 |  |  | 57 |
BXP’s Share of NOI (excluding termination income) |  | $ | 488,064 |  |  | $ | 473,495 |
Net Operating Income (NOI) |  | $ | 501,881 |  |  | $ | 488,908 |
Less: |  |  |  |
Termination income |  | 2,564 |  |  | 1,980 |
NOI from non Same Properties (excluding termination income) 3 |  | 26,144 |  |  | 14,621 |
Same Property NOI (excluding termination income) |  | 473,173 |  |  | 472,307 |
Less: |  |  |  |
Partners’ share of NOI from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) 2 |  | 49,918 |  |  | 48,249 |
Add: |  |  |  |
Partners’ share of NOI from non Same Properties from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) 3 | — |  |  | — |
BXP’s share of NOI from unconsolidated joint ventures (excluding termination income) 1 |  | 38,665 |  |  | 34,816 |
Less: |  |  |  |
BXP’s share of NOI from non Same Properties from unconsolidated joint ventures (excluding termination income) 3 |  | 5,094 |  |  | 796 |
BXP’s Share of Same Property NOI (excluding termination income) |  | $ | 456,826 |  |  | $ | 458,078 |

_____________
1 For a quantitative reconciliation for the three months ended September 30, 2023, see page 64.
2 For a quantitative reconciliation for the three months ended September 30, 2023, see pages 61-62.
3 Pages 21-24 indicate by footnote the properties that are not included as part of Same Property NOI. In addition, Same Properties exclude Metropolitan Square and properties that were sold prior to September 30, 2023 and therefore are no longer a part of the Company’s property portfolio. For details related to Metropolitan Square, see page 34.
9

| Q3 2023
Reconciliation of net income (loss) attributable to Boston Properties, Inc. to BXP’s Share of same property net operating income (NOI) - cash

(in thousands)

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Sep-22
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 360,977 |
Net (income) loss attributable to noncontrolling interests |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | (12,626) |  |  | 40,883 |
Noncontrolling interest in property partnerships |  | 20,909 |  |  | 18,801 |
Net income (loss) |  | (103,543) |  |  | 420,661 |
Add: |  |  |  |
Interest expense |  | 147,812 |  |  | 111,846 |
Losses from investments in securities |  | 925 |  |  | 1,571 |
Loss from unconsolidated joint ventures |  | 247,556 |  |  | 3,524 |
Depreciation and amortization expense |  | 207,435 |  |  | 190,675 |
Transaction costs |  | 751 |  |  | 1,650 |
Payroll and related costs from management services contracts |  | 3,906 |  |  | 3,900 |
General and administrative expense |  | 31,410 |  |  | 32,519 |
Less: |  |  |  |
Interest and other income (loss) |  | 20,715 |  |  | 3,728 |
Unrealized loss on non-real estate investment |  | (51) |  |  | — |
Gains on sales of real estate |  | 517 |  |  | 262,345 |
Direct reimbursements of payroll and related costs from management services contracts |  | 3,906 |  |  | 3,900 |
Development and management services revenue |  | 9,284 |  |  | 7,465 |
Net Operating Income (NOI) |  | 501,881 |  |  | 488,908 |
Less: |  |  |  |
Straight-line rent |  | 19,139 |  |  | 32,140 |
Fair value lease revenue |  | 2,981 |  |  | 2,442 |
Amortization and accretion related to sales type lease |  | 233 |  |  | — |
Termination income |  | 2,564 |  |  | 1,980 |
Add: |  |  |  |
Straight-line ground rent expense adjustment 1 |  | 578 |  |  | 631 |
Lease transaction costs that qualify as rent inducements 2 |  | (5,943) |  |  | 4,667 |
NOI - cash (excluding termination income) |  | 471,599 |  |  | 457,644 |
Less: |  |  |  |
NOI - cash from non Same Properties (excluding termination income) 3 |  | 18,721 |  |  | 9,868 |
Same Property NOI - cash (excluding termination income) |  | 452,878 |  |  | 447,776 |
Less: |  |  |  |
Partners’ share of NOI - cash from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) 4 |  | 44,090 |  |  | 45,046 |
Add: |  |  |  |
Partners’ share of NOI - cash from non Same Properties from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) 3 | — |  |  | — |
BXP’s share of NOI - cash from unconsolidated joint ventures (excluding termination income) 5 |  | 34,524 |  |  | 30,969 |
Less: |  |  |  |
BXP’s share of NOI - cash from non Same Properties from unconsolidated joint ventures (excluding termination income) 3 |  | 3,175 |  |  | 730 |
BXP’s Share of Same Property NOI - cash (excluding termination income) |  | $ | 440,137 |  |  | $ | 432,969 |

_____________
1 In light of the front-ended, uneven rental payments required by the Company’s 99-year ground and air rights lease for the 100 Clarendon Street garage and Back Bay Transit Station in Boston, MA, and to make period-to-period comparisons more meaningful to investors, the adjustment does not include the straight-line impact of approximately $135 and $169 for the three months ended September 30, 2023 and 2022, respectively. As of September 30, 2023, the Company has remaining lease payments aggregating approximately $24.3 million, all of which it expects to incur by the end of 2025 with no payments thereafter. Under GAAP, the Company recognizes expense of $(87) per quarter on a straight-line basis over the term of the lease. However, unlike more traditional ground and air rights leases, the timing and amounts of the rental payments by the Company correlate to the uneven timing and funding by the Company of capital expenditures related to improvements at Back Bay Transit Station. As a result, the amounts excluded from the adjustment each quarter through 2025 may vary significantly.
2 Consist of lease transaction costs that qualify as rent inducements in accordance with GAAP. Lease transaction costs are generally included in 2nd generation tenant improvements and leasing commissions in the Company’s FAD calculation on page 8.
3 Pages 21-24 indicate by footnote the properties that are not included as part of Same Property NOI. In addition, Same Properties exclude Metropolitan Square and properties that were sold prior to September 30, 2023 and therefore are no longer a part of the Company’s property portfolio. For details related to Metropolitan Square, see page 34.
4 For a quantitative reconciliation for the three months ended September 30, 2023, see page 62.
5 For a quantitative reconciliation for the three months ended September 30, 2023, see page 64.
10

| Q3 2023
Same property net operating income (NOI) by reportable segment

(dollars in thousands)

| Office 1 |  | Hotel & Residential
| Three Months Ended |  | $ |  | % |  | Three Months Ended |  | $ |  | %
| 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change |  | 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change
Rental Revenue 2 | $ | 749,488 |  |  | $ | 732,126 |  |  |  |  |  |  | $ | 25,273 |  |  | $ | 23,016 |  |  |  |  |
Less: Termination income | 2,347 |  |  | 1,980 |  |  |  |  |  |  | — |  |  | — |  |  |  |  |
Rental revenue (excluding termination income) 2 | 747,141 |  |  | 730,146 |  |  | $ | 16,995 |  |  | 2.3 | % |  | 25,273 |  |  | 23,016 |  |  | $ | 2,257 |  |  | 9.8 | %
Less: Operating expenses and real estate taxes | 284,483 |  |  | 266,517 |  |  | 17,966 |  |  | 6.7 | % |  | 14,758 |  |  | 14,338 |  |  | 420 |  |  | 2.9 | %
NOI (excluding termination income) 2, 3 | $ | 462,658 |  |  | $ | 463,629 |  |  | $ | (971) |  |  | (0.2) | % |  | $ | 10,515 |  |  | $ | 8,678 |  |  | $ | 1,837 |  |  | 21.2 | %
Rental revenue (excluding termination income) 2 | $ | 747,141 |  |  | $ | 730,146 |  |  | $ | 16,995 |  |  | 2.3 | % |  | $ | 25,273 |  |  | $ | 23,016 |  |  | $ | 2,257 |  |  | 9.8 | %
Less: Straight-line rent and fair value lease revenue | 14,862 |  |  | 28,305 |  |  | (13,443) |  |  | (47.5) | % |  | 68 |  |  | 60 |  |  | 8 |  |  | 13.3 | %
Add: Lease transaction costs that qualify as rent inducements 4 | (5,943) |  |  | 3,203 |  |  | (9,146) |  |  | (285.5) | % |  | — |  |  | — |  |  | — |  |  | — | %
Subtotal | 726,336 |  |  | 705,044 |  |  | 21,292 |  |  | 3.0 | % |  | 25,205 |  |  | 22,956 |  |  | 2,249 |  |  | 9.8 | %
Less: Operating expenses and real estate taxes | 284,483 |  |  | 266,517 |  |  | 17,966 |  |  | 6.7 | % |  | 14,758 |  |  | 14,338 |  |  | 420 |  |  | 2.9 | %
Add: Straight-line ground rent expense 5 | 578 |  |  | 631 |  |  | (53) |  |  | (8.4) | % |  | — |  |  | — |  |  | — |  |  | — | %
NOI - cash (excluding termination income) 2, 3 | $ | 442,431 |  |  | $ | 439,158 |  |  | $ | 3,273 |  |  | 0.7 | % |  | $ | 10,447 |  |  | $ | 8,618 |  |  | $ | 1,829 |  |  | 21.2 | %
| Consolidated Total 1 (A) |  | BXP’s share of Unconsolidated Joint Ventures (B)
| Three Months Ended |  | $ |  | % |  | Three Months Ended |  | $ |  | %
| 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change |  | 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change
Rental Revenue 2 | $ | 774,761 |  |  | $ | 755,142 |  |  |  |  |  |  | $ | 59,104 |  |  | $ | 58,027 |  |  |  |  |
Less: Termination income | 2,347 |  |  | 1,980 |  |  |  |  |  |  | 500 |  |  | 500 |  |  |  |  |
Rental revenue (excluding termination income) 2 | 772,414 |  |  | 753,162 |  |  | $ | 19,252 |  |  | 2.6 | % |  | 58,604 |  |  | 57,527 |  |  | $ | 1,077 |  |  | 1.9 | %
Less: Operating expenses and real estate taxes | 299,241 |  |  | 280,855 |  |  | 18,386 |  |  | 6.5 | % |  | 25,033 |  |  | 23,507 |  |  | 1,526 |  |  | 6.5 | %
NOI (excluding termination income) 2, 3 | $ | 473,173 |  |  | $ | 472,307 |  |  | $ | 866 |  |  | 0.2 | % |  | $ | 33,571 |  |  | $ | 34,020 |  |  | $ | (449) |  |  | (1.3) | %
Rental revenue (excluding termination income) 2 | $ | 772,414 |  |  | $ | 753,162 |  |  | $ | 19,252 |  |  | 2.6 | % |  | $ | 58,604 |  |  | $ | 57,527 |  |  | $ | 1,077 |  |  | 1.9 | %
Less: Straight-line rent and fair value lease revenue | 14,930 |  |  | 28,365 |  |  | (13,435) |  |  | (47.4) | % |  | 2,553 |  |  | 5,293 |  |  | (2,740) |  |  | (51.8) | %
Add: Lease transaction costs that qualify as rent inducements 4 | (5,943) |  |  | 3,203 |  |  | (9,146) |  |  | (285.5) | % |  | 190 |  |  | 1,368 |  |  | (1,178) |  |  | (86.1) | %
Subtotal | 751,541 |  |  | 728,000 |  |  | 23,541 |  |  | 3.2 | % |  | 56,241 |  |  | 53,602 |  |  | 2,639 |  |  | 4.9 | %
Less: Operating expenses and real estate taxes | 299,241 |  |  | 280,855 |  |  | 18,386 |  |  | 6.5 | % |  | 25,033 |  |  | 23,507 |  |  | 1,526 |  |  | 6.5 | %
Add: Straight-line ground rent expense 5 | 578 |  |  | 631 |  |  | (53) |  |  | (8.4) | % |  | 141 |  |  | 144 |  |  | (3) |  |  | (2.1) | %
NOI - cash (excluding termination income) 2, 3 | $ | 452,878 |  |  | $ | 447,776 |  |  | $ | 5,102 |  |  | 1.1 | % |  | $ | 31,349 |  |  | $ | 30,239 |  |  | $ | 1,110 |  |  | 3.7 | %
| Partners’ share of Consolidated Joint Ventures (C) |  | BXP’s Share 2, 6
| Three Months Ended |  | $ |  | % |  | Three Months Ended |  | $ |  | %
| 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change |  | 30-Sep-23 |  | 30-Sep-22 |  | Change |  | Change
Rental Revenue 2 | $ | 83,203 |  |  | $ | 79,336 |  |  |  |  |  |  | $ | 750,662 |  |  | $ | 733,833 |  |  |  |  |
Less: Termination income | 129 |  |  | 57 |  |  |  |  |  |  | 2,718 |  |  | 2,423 |  |  |  |  |
Rental revenue (excluding termination income) 2 | 83,074 |  |  | 79,279 |  |  | $ | 3,795 |  |  | 4.8 | % |  | 747,944 |  |  | 731,410 |  |  | $ | 16,534 |  |  | 2.3 | %
Less: Operating expenses and real estate taxes | 33,156 |  |  | 31,030 |  |  | 2,126 |  |  | 6.9 | % |  | 291,118 |  |  | 273,332 |  |  | 17,786 |  |  | 6.5 | %
NOI (excluding termination income) 2, 3 | $ | 49,918 |  |  | $ | 48,249 |  |  | $ | 1,669 |  |  | 3.5 | % |  | $ | 456,826 |  |  | $ | 458,078 |  |  | $ | (1,252) |  |  | (0.3) | %
Rental revenue (excluding termination income) 2 | $ | 83,074 |  |  | $ | 79,279 |  |  | $ | 3,795 |  |  | 4.8 | % |  | $ | 747,944 |  |  | $ | 731,410 |  |  | $ | 16,534 |  |  | 2.3 | %
Less: Straight-line rent and fair value lease revenue | 6,131 |  |  | 3,203 |  |  | 2,928 |  |  | 91.4 | % |  | 11,352 |  |  | 30,455 |  |  | (19,103) |  |  | (62.7) | %
Add: Lease transaction costs that qualify as rent inducements 4 | 303 |  |  | — |  |  | 303 |  |  | 100.0 | % |  | (6,056) |  |  | 4,571 |  |  | (10,627) |  |  | (232.5) | %
Subtotal | 77,246 |  |  | 76,076 |  |  | 1,170 |  |  | 1.5 | % |  | 730,536 |  |  | 705,526 |  |  | 25,010 |  |  | 3.5 | %
Less: Operating expenses and real estate taxes | 33,156 |  |  | 31,030 |  |  | 2,126 |  |  | 6.9 | % |  | 291,118 |  |  | 273,332 |  |  | 17,786 |  |  | 6.5 | %
Add: Straight-line ground rent expense 5 | — |  |  | — |  |  | — |  |  | — | % |  | 719 |  |  | 775 |  |  | (56) |  |  | (7.2) | %
NOI - cash (excluding termination income) 2, 3 | $ | 44,090 |  |  | $ | 45,046 |  |  | $ | (956) |  |  | (2.1) | % |  | $ | 440,137 |  |  | $ | 432,969 |  |  | $ | 7,168 |  |  | 1.7 | %

___________________
1 Includes 100% share of consolidated joint ventures that are a Same Property.
2 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
3 For a quantitative reconciliation of net income (loss) attributable to Boston Properties, Inc. to net operating income (NOI) (excluding termination income) and NOI - cash (excluding termination income), see pages 9-10.
4 Consist of lease transaction costs that qualify as rent inducements in accordance with GAAP. Lease transaction costs are generally included in 2nd generation tenant improvements and leasing commissions in the Company’s FAD calculation on page 8.
5 Excludes the straight-line impact of approximately $135 and $169 for the three months ended September 30, 2023 and 2022, respectively, in connection with the Company’s 99-year ground and air rights lease at 100 Clarendon Street garage and Back Bay Transit Station.
6 BXP’s Share equals (A) + (B) - (C).
11

| Q3 2023
Capital expenditures, tenant improvement costs and leasing commissions

(dollars in thousands, except PSF amounts)
CAPITAL EXPENDITURES

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Maintenance capital expenditures |  | $ | 19,599 |  |  | $ | 29,015 |
Planned capital expenditures associated with acquisition properties |  | 32 |  |  | 33 |
Repositioning capital expenditures |  | 10,575 |  |  | 7,252 |
Hotel improvements, equipment upgrades and replacements |  | 141 |  |  | 306 |
Subtotal |  | 30,347 |  |  | 36,606 |
Add: |  |  |  |
BXP’s share of maintenance capital expenditures from unconsolidated joint ventures (JVs) |  | 91 |  |  | 338 |
BXP’s share of planned capital expenditures associated with acquisition properties from unconsolidated JVs |  | 2,908 |  |  | 1,498 |
BXP’s share of repositioning capital expenditures from unconsolidated JVs |  | — |  |  | — |
Less: |  |  |  |
Partners’ share of maintenance capital expenditures from consolidated JVs |  | 2,695 |  |  | 5,221 |
Partners’ share of planned capital expenditures associated with acquisition properties from consolidated JVs |  | — |  |  | — |
Partners’ share of repositioning capital expenditures from consolidated JVs |  | 622 |  |  | 925 |
BXP’s Share of Capital Expenditures 1 |  | $ | 30,029 |  |  | $ | 32,296 |

2nd GENERATION TENANT IMPROVEMENTS AND LEASING COMMISSIONS 2

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Square feet |  | 1,184,449 |  |  | 891,347 |
Tenant improvements and lease commissions PSF |  | $ | 89.81 |  |  | $ | 60.70 |

___________________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 Includes 100% of unconsolidated joint ventures.
12

| Q3 2023
Acquisitions and dispositions

For the period from January 1, 2023 through September 30, 2023
(dollars in thousands)
ACQUISITIONS

|  |  |  |  |  |  |  | Investment |  |  |
Property |  | Location |  | Date Acquired |  | Square Feet |  | Initial |  | Anticipated Future |  | Total |  | In-service Leased (%) |
13100 and 13150 Worldgate Drive (50% ownership) 1 |  | Herndon, VA |  | January 31, 2023 |  | N/A |  | $ | 17,000 |  |  | $ | — |  |  | $ | 17,000 |  |  | N/A |
Total Acquisitions |  |  |  |  |  | — |  |  | $ | 17,000 |  |  | $ | — |  |  | $ | 17,000 |  |  | — | % |

DISPOSITIONS

Property |  | Location |  | Date Disposed |  | Square Feet |  | Gross Sales Price |  | Net Cash Proceeds |  | Book Gain 2 |  |
N/A |  |  |  |  |  | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |
Total Dispositions |  |  |  |  |  | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |

___________________
1 Consists of two vacant office buildings aggregating approximately 350,000 rentable square feet and a 1,200-space structured parking deck situated on a 10-acre site. The joint venture intends to redevelop the property for residential use and the vacant properties are not reflected in the Company’s in-service property listing. There can be no assurance that the joint venture will commence the development as currently contemplated or at all.
2 Excludes approximately $0.5 million of gains on sales of real estate recognized during the nine months ended September 30, 2023 related to gain amounts from sales of real estate occurring in prior periods.
13

| Q3 2023
Construction in progress

as of September 30, 2023
(dollars in thousands)
CONSTRUCTION IN PROGRESS 1

|  | Actual/Estimated |  |  |  |  |  |  |  | BXP’s share |  |  |  |  |  |
|  | Initial Occupancy |  | Stabilization Date |  |  |  |  |  | Square Feet |  | Investment to Date 2 |  | Estimated Total Investment 2 |  | Total Financing |  | Amount Drawn at 9/30/2023 |  | Estimated Future Equity Requirement 2 |  | Percentage Leased 3 |  | Percentage placed in-service 4 |  | Net Operating Income 5 (BXP’s share)
Construction Properties |  |  | Location |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 360 Park Avenue South (42% ownership) 6 | Q3 2024 |  | Q4 2025 |  | New York, NY |  |  |  | 450,000 |  |  | $ | 207,253 |  |  | $ | 248,000 |  |  | $ | 92,774 |  |  | $ | 92,768 |  |  | $ | 40,741 |  |  | 18 | % |  | — | % |  | N/A
| Reston Next Office Phase II | Q2 2024 |  | Q2 2025 |  | Reston, VA |  |  |  | 90,000 |  |  | 38,910 |  |  | 61,000 |  |  | — |  |  | — |  |  | 22,090 |  |  | — | % |  | — | % |  | N/A
| Total Office Properties under Construction |  |  |  | 540,000 |  |  | 246,163 |  |  | 309,000 |  |  | 92,774 |  |  | 92,768 |  |  | 62,831 |  |  | 15 | % |  | — | % |  | — |
Lab/Life Sciences |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 103 CityPoint | Q4 2024 |  | Q3 2025 |  | Waltham, MA |  |  |  | 113,000 |  |  | 84,873 |  |  | 115,100 |  |  | — |  |  | — |  |  | 30,227 |  |  | — | % |  | — | % |  | N/A
| 180 CityPoint | Q1 2024 |  | Q3 2025 |  | Waltham, MA |  |  |  | 329,000 |  |  | 207,941 |  |  | 290,500 |  |  | — |  |  | — |  |  | 82,559 |  |  | 43 | % |  | 5 | % |  | $ | — |
| 300 Binney Street (Redevelopment) | Q1 2025 |  | Q1 2025 |  | Cambridge, MA |  |  |  | 236,000 |  |  | 39,049 |  |  | 205,300 |  |  | — |  |  | — |  |  | 166,251 |  |  | 100 | % |  | — | % |  | N/A
| 105 Carnegie Center (Redevelopment) | Q4 2024 |  | Q2 2025 |  | Princeton, NJ |  |  |  | 73,000 |  |  | 2,062 |  |  | 40,600 |  |  | — |  |  | — |  |  | 38,538 |  |  | — | % |  | — | % |  | N/A
| 651 Gateway (50% ownership) | Q1 2024 |  | Q4 2025 |  | South San Francisco, CA |  |  |  | 327,000 |  |  | 94,241 |  |  | 167,100 |  |  | — |  |  | — |  |  | 72,859 |  |  | 21 | % |  | — | % |  | N/A
| 290 Binney Street | Q2 2026 |  | Q2 2026 |  | Cambridge, MA |  |  |  | 566,000 |  |  | 210,885 |  |  | 1,116,300 |  |  | — |  |  | — |  |  | 905,415 |  |  | 100 | % |  | — | % |  | N/A
| Total Lab/Life Sciences Properties under Construction |  |  |  | 1,644,000 |  |  | 639,051 |  |  | 1,934,900 |  |  | — |  |  | — |  |  | 1,295,849 |  |  | 62 | % |  | 1 | % |  | — |
Residential |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Skymark - Reston Next Residential (508 units) (20% ownership) | Q2 2024 |  | Q2 2026 |  | Reston, VA |  |  |  | 417,000 |  |  | 28,815 |  |  | 47,700 |  |  | 28,000 |  |  | 10,733 |  |  | 1,618 |  |  | — | % |  | — | % |  | N/A
| Total Residential Property under Construction |  |  |  | 417,000 |  |  | 28,815 |  |  | 47,700 |  |  | 28,000 |  |  | 10,733 |  |  | 1,618 |  |  | — | % |  | — | % |  | N/A
Retail |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 760 Boylston Street (Redevelopment) | Q2 2024 |  | Q2 2024 |  | Boston, MA |  |  |  | 118,000 |  |  | 14,742 |  |  | 43,800 |  |  | — |  |  | — |  |  | 29,058 |  |  | 100 | % |  | — | % |  | N/A
| Reston Next Retail | Q2 2025 |  | Q4 2025 |  | Reston, VA |  |  |  | 33,000 |  |  | 21,978 |  |  | 26,600 |  |  | — |  |  | — |  |  | 4,622 |  |  | — | % |  | — | % |  | N/A
| Total Retail Properties under Construction |  |  |  | 151,000 |  |  | 36,720 |  |  | 70,400 |  |  | — |  |  | — |  |  | 33,680 |  |  | 78 | % |  | — |  |  | N/A
Total Properties Under Construction |  |  |  | 2,752,000 |  |  | $ | 950,749 |  |  | $ | 2,362,000 |  |  | $ | 120,774 |  |  | $ | 103,501 |  |  | $ | 1,393,978 |  |  | 52 | % | 7 | 1 | % |  | $ | — |

PROJECTS FULLY PLACED IN-SERVICE DURING 2023

| Actual/Estimated |  |  |  |  |  |  |  | BXP’s share |  |  |  |
|  |  |  |  |  |  |  |  |  |  |  |  | Estimated Total Investment 2 |  |  |  | Amount Drawn at 9/30/2023 |  | Estimated Future Equity Requirement 2 |  |  |  | Net Operating Income 5 (BXP’s share)
| Initial Occupancy |  | Stabilization Date |  |  |  |  |  |  |  | Investment to Date 2 |  |  | Total Financing |  |  |  | Percentage Leased 3 |
|  |  | Location |  |  | Square Feet |  |  |  |  |  |  |
2100 Pennsylvania Avenue | Q2 2022 |  | Q3 2024 |  | Washington, DC |  |  |  | 475,849 |  |  | $ | 360,136 |  |  | $ | 375,900 |  |  | $ | — |  |  | $ | — |  |  | $ | 15,764 |  |  | 93 | % |  | $ | 2,738 |
View Boston observatory at The Prudential Center (Redevelopment) | Q2 2023 |  | N/A |  | Boston, MA |  |  |  | 63,000 |  |  | 178,182 |  |  | 182,300 |  |  | — |  |  | — |  |  | 4,118 |  |  | N/A |  | N/A 8
140 Kendrick - Building A (Redevelopment) | Q3 2023 |  | Q3 2023 |  | Needham, MA |  |  |  | 104,166 |  |  | 22,189 |  |  | 26,600 |  |  | — |  |  | — |  |  | 4,411 |  |  | 100 | % |  | 960 |
751 Gateway (49% ownership) | Q3 2023 |  | Q3 2023 |  | South San Francisco, CA |  |  |  | 230,592 |  |  | 117,098 |  |  | 127,600 |  |  | — |  |  | — |  |  | 10,502 |  |  | 100 | % |  | 716 |
Total Projects Fully Placed In-Service |  |  |  |  |  |  |  | 873,607 |  |  | $ | 677,605 |  |  | $ | 712,400 |  |  | $ | — |  |  | $ | — |  |  | $ | 34,795 |  |  | 96 | % | 9 | $ | 4,414 |

14

| Q3 2023
Construction in progress (continued)

________________
1 A project is classified as Construction in Progress when (1) construction or supply contracts have been signed, physical improvements have commenced or a lease has been signed and (2) capitalized interest has commenced.
2 Includes income (loss) and interest carry on debt and equity investment.
3 Represents percentage leased as of October 30, 2023, including leases with future commencement dates.
4 Represents the portion of the project that no longer qualifies for capitalization of interest in accordance with GAAP.
5 Amounts represent Net Operating Income for the three months ended September 30, 2023. For partially owned properties, amount represents BXP’s share based on its ownership percentage. See the Definitions and Reconciliations sections of this supplemental package starting on page 55.
6 Investment to Date includes all related costs incurred prior to the contribution of the property by the Company to the joint venture on December 15, 2021 totaling approximately $107 million and the Company’s proportionate share of the loan. The Company’s joint venture partners will fund required capital until their aggregate investment is approximately 58% of all capital contributions; thereafter, the joint venture partners will fund required capital according to their percentage interests. Investment to date excludes approximately $54 million of an impairment charge.
7 Total percentage leased excludes Residential.
8 Result of operations from the View Boston observatory is included within the result of operations from 800 Boylston Street - The Prudential Center.
9 Total percentage leased excludes View Boston observatory at The Prudential Center.
15

| Q3 2023
Land parcels and purchase options

as of September 30, 2023
OWNED LAND PARCELS

Location | Approximate Developable Square Feet 1
Reston, VA |  | 2,229,000 |
San Jose, CA 2 |  | 2,199,000 |
New York, NY (25% ownership) |  | 2,000,000 |
Princeton, NJ |  | 1,650,000 |
San Jose, CA (55% ownership) |  | 1,088,000 |
New York, NY (55% ownership) 3 |  | 895,000 |
San Francisco, CA |  | 850,000 |
Santa Clara, CA |  | 632,000 |
Washington, DC (50% ownership) |  | 520,000 |
South San Francisco, CA (50% ownership) |  | 451,000 |
Springfield, VA |  | 422,000 |
Lexington, MA |  | 420,000 |
Waltham, MA |  | 365,000 |
Herndon, VA (50% ownership) |  | 350,000 |
Rockville, MD 2 |  | 302,000 |
El Segundo, CA (50% ownership) |  | 275,000 |
Dulles, VA |  | 150,000 |
Total |  | 14,798,000 |

VALUE CREATION PIPELINE - LAND PURCHASE OPTIONS

Location | Approximate Developable Square Feet 1
Boston, MA |  | 1,300,000 |
Waltham, MA 4 |  | 1,200,000 |
Cambridge, MA |  | 887,000 |
Total |  | 3,387,000 |

__________________
1 Represents 100% of consolidated and unconsolidated projects.
2 Excludes the existing square footage at in-service properties being held for future re-development as listed and noted on pages 21-24.
3 On July 28, 2023, BXP entered into a joint venture agreement with an institutional investor for the future development of 343 Madison Avenue. Subsequently, on August 1, 2023, the joint venture executed a 99-year ground lease with the Metropolitan Transportation Authority for the approximately 25,000 square foot site. The ground lease requires the joint venture to construct the direct access to Grand Central Madison as Phase 1 of the development project.
4 The Company expects to be a 50% partner in the future development of these sites.
16

| Q3 2023
Leasing activity

for the three months ended September 30, 2023
ALL IN-SERVICE PROPERTIES

Net (increase)/decrease in available space (SF) | Total
Vacant space available at the beginning of the period | 5,802,761 |
Less: |
Property dispositions/properties taken out of service 1 | 289,204 |
Add: |
Properties placed (and partially placed) in-service 2 | 334,758 |
Leases expiring or terminated during the period | 1,205,603 |
Total space available for lease | 7,053,918 |
1st generation leases | 380,519 |
2nd generation leases with new clients | 632,026 |
2nd generation lease renewals | 552,423 |
Total space leased | 1,564,968 |
Vacant space available for lease at the end of the period | 5,488,950 |
Net (increase)/decrease in available space | 313,811 |
Second generation leasing information: 3 |
Leases commencing during the period (SF) | 1,184,449 |
Weighted average lease term (months) | 81 |
Weighted average free rent period (days) | 190 |
Total transaction costs per square foot 4 | $89.81 |
Increase (decrease) in gross rents 5 | (3.34) | %
Increase (decrease) in net rents 6 | (5.61) | %

| All leases (SF) |  | Incr (decr) in 2nd generation cash rents |  | Total square feet of leases executed in the quarter 8
| 1st generation |  | 2nd generation |  | total 7 |  | gross 5, 7 |  | net 6, 7 |
Boston | 104,166 |  |  | 261,261 |  |  | 365,427 |  |  | 8.32 | % |  | 13.90 | % |  | 438,634 |
Los Angeles | — |  |  | 69,751 |  |  | 69,751 |  |  | 0.93 | % |  | 1.47 | % |  | 99,553 |
New York | — |  |  | 373,555 |  |  | 373,555 |  |  | (5.15) | % |  | (10.83) | % |  | 239,591 |
San Francisco | 230,592 |  |  | 175,618 |  |  | 406,210 |  |  | (1.67) | % |  | (2.19) | % |  | 51,570 |
Seattle | — |  |  | — |  |  | — |  |  | — | % |  | — | % |  | 126,637 |
Washington, DC | 45,761 |  |  | 304,264 |  |  | 350,025 |  |  | (10.43) | % |  | (15.75) | % |  | 99,796 |
Total / Weighted Average | 380,519 |  |  | 1,184,449 |  |  | 1,564,968 |  |  | (3.34) | % |  | (5.61) | % |  | 1,055,781 |

_____________
1 Total square feet of property taken out of service in Q3 2023 consists of 289,204 at Metropolitan Square, see page 34.
2 Total square feet of properties placed in service in Q3 2023 consists of 230,592 at 751 Gateway and 104,166 at 140 Kendrick Street.
3 Second generation leases are defined as leases for space that has previously been leased. Of the 1,184,449 square feet of second generation leases that commenced in Q3 2023, leases for 1,024,020 square feet were signed in prior periods.
4 Total transaction costs include tenant improvements and leasing commissions, but exclude free rent concessions.
5 Represents the increase/(decrease) in gross rent (base rent plus expense reimbursements) on the new vs. expired leases on the 789,077 square feet of second generation leases that had been occupied within the prior 12 months; excludes leases that management considers temporary because the client is not expected to occupy the space on a long-term basis.
6 Represents the increase/(decrease) in net rent (gross rent less operating expenses) on the new vs. expired leases on the 789,077 square feet of second generation leases that had been occupied within the prior 12 months; excludes leases that management considers temporary because the client is not expected to occupy the space on a long-term basis.
7 Represents leases for which rental revenue recognition commenced in accordance with GAAP during the quarter.
8 Represents leases executed in the quarter for which the Company either (1) commenced rental revenue recognition in such quarter or (2) will commence rental revenue recognition in subsequent quarters, in accordance with GAAP, and includes leases at properties currently under development. The total square feet of leases executed in the current quarter for which the Company recognized rental revenue in the current quarter is 189,541.
17

| Q3 2023
Portfolio overview

for the three months ended September 30, 2023
(dollars in thousands)
Rentable square footage of in-service properties by location and unit type 1, 2

|  | Office |  | Retail |  | Residential |  | Hotel |  | Total
Boston |  | 14,670,294 |  |  | 1,049,100 |  |  | 550,114 |  |  | 330,000 |  |  | 16,599,508 |
Los Angeles |  | 2,186,794 |  |  | 126,377 |  |  | — |  |  | — |  |  | 2,313,171 |
New York |  | 12,108,672 |  |  | 486,844 |  |  | — |  |  | — |  |  | 12,595,516 |
San Francisco |  | 7,228,758 |  |  | 354,110 |  |  | 318,171 |  |  | — |  |  | 7,901,039 |
Seattle |  | 1,507,450 |  |  | 26,472 |  |  | — |  |  | — |  |  | 1,533,922 |
Washington, DC |  | 8,617,333 |  |  | 662,626 |  |  | 493,241 |  |  | — |  |  | 9,773,200 |
Total |  | 46,319,301 |  |  | 2,705,529 |  |  | 1,361,526 |  |  | 330,000 |  |  | 50,716,356 |
% of Total |  | 91.33 | % |  | 5.33 | % |  | 2.68 | % |  | 0.66 | % |  | 100.00 | %

Rental revenue of in-service properties by unit type 1

|  | Office |  | Retail |  | Residential |  | Hotel 3 |  | Total
Consolidated |  | $ | 728,440 |  |  | $ | 58,064 |  |  | $ | 11,205 |  |  | $ | 13,384 |  |  | $ | 811,093 |
Less: |  |  |  |  |  |  |  |  |  |
Partners’ share from consolidated joint ventures 4 |  | 72,940 |  |  | 10,263 |  |  | — |  |  | — |  |  | 83,203 |
Add: |  |  |  |  |  |  |  |  |  |
BXP’s share from unconsolidated joint ventures 5 |  | 61,453 |  |  | 3,231 |  |  | 2,741 |  |  | — |  |  | 67,425 |
BXP’s Share of Rental revenue 1 |  | $ | 716,953 |  |  | $ | 51,032 |  |  | $ | 13,946 |  |  | $ | 13,384 |  |  | $ | 795,315 |
% of Total |  | 90.15 | % |  | 6.42 | % |  | 1.75 | % |  | 1.68 | % |  | 100.00 | %

Percentage of BXP’s Share of net operating income (NOI) (excluding termination income) by location 1, 6

| CBD |  | Suburban |  | Total
Boston | 30.19 | % |  | 7.05 | % |  | 37.24 | %
Los Angeles | 2.46 | % |  | — | % |  | 2.46 | %
New York | 24.06 | % |  | 1.91 | % |  | 25.97 | %
San Francisco | 16.32 | % |  | 2.18 | % |  | 18.50 | %
Seattle | 2.36 | % |  | — | % |  | 2.36 | %
Washington, DC | 3.42 | % |  | 10.05 | % |  | 13.47 | %
Total | 78.81 | % |  | 21.19 | % |  | 100.00 | %

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 Includes 100% of the rentable square footage of the Company’s In-Service Properties. For additional detail relating to the Company’s In-Service Properties, see pages 21-24.
3 Excludes approximately $100 of revenue from retail clients that is included in Retail.
4 See page 62 for additional information.
5 See page 64 for additional information.
6 BXP’s Share of NOI (excluding termination income) is a non-GAAP financial measure. For a quantitative reconciliation of net income attributable to Boston Properties, Inc. to BXP’s Share of NOI (excluding termination income), see page 9.
18

| Q3 2023
Residential and hotel performance

(dollars in thousands, except rental rates)
RESULTS OF OPERATIONS

| Residential 1 |  | Hotel
| Three Months Ended |  | Three Months Ended
| 30-Sep-23 |  | 30-Jun-23 |  | 30-Sep-23 |  | 30-Jun-23
Rental Revenue 2 | $ | 11,789 |  |  | $ | 12,253 |  |  | $ | 13,484 |  |  | $ | 13,969 |
Less: Operating expenses and real estate taxes | 5,738 |  |  | 5,783 |  |  | 9,020 |  |  | 8,161 |
Net Operating Income (NOI) 2 | 6,051 |  |  | 6,470 |  |  | 4,464 |  |  | 5,808 |
Add: BXP’s share of NOI from unconsolidated joint ventures | 1,715 |  |  | 1,722 |  |  | N/A |  | N/A
BXP’s Share of NOI 2 | $ | 7,766 |  |  | $ | 8,192 |  |  | $ | 4,464 |  |  | $ | 5,808 |
Rental Revenue 2 | $ | 11,789 |  |  | $ | 12,253 |  |  | $ | 13,484 |  |  | $ | 13,969 |
Less: Straight line rent and fair value lease revenue | 70 |  |  | 9 |  |  | (2) |  |  | (2) |
Add: Lease transaction costs that qualify as rent inducements | — |  |  | — |  |  | — |  |  | — |
Subtotal | 11,719 |  |  | 12,244 |  |  | 13,486 |  |  | 13,971 |
Less: Operating expenses and real estate taxes | 5,738 |  |  | 5,783 |  |  | 9,020 |  |  | 8,161 |
NOI - cash basis 2 | 5,981 |  |  | 6,461 |  |  | 4,466 |  |  | 5,810 |
Add: BXP’s share of NOI-cash from unconsolidated joint ventures | 1,715 |  |  | 1,722 |  |  | N/A |  | N/A
BXP’s Share of NOI - cash basis 2 | $ | 7,696 |  |  | $ | 8,183 |  |  | $ | 4,466 |  |  | $ | 5,810 |

RENTAL RATES AND OCCUPANCY - Year-over-Year

| Residential Units |  | Three Months Ended |  | Percent Change
|  | 30-Sep-23 |  | 30-Sep-22 |
BOSTON |  |  |  |  |  |  |
Hub50House (50% ownership), Boston, MA 2 | 440 |  |  |  |  |  |
Average Monthly Rental Rate |  |  | $ | 4,293 |  |  | $ | 4,102 |  |  | 4.66 | %
Average Rental Rate Per Occupied Square Foot |  |  | $ | 5.89 |  |  | $ | 5.64 |  |  | 4.43 | %
Average Physical Occupancy |  |  | 95.23 | % |  | 95.45 | % |  | (0.23) | %
Average Economic Occupancy |  |  | 94.97 | % |  | 95.22 | % |  | (0.26) | %
Proto Kendall Square, Cambridge, MA 2, 3 | 280 |  |  |  |  |  |
Average Monthly Rental Rate |  |  | $ | 3,113 |  |  | $ | 2,895 |  |  | 7.53 | %
Average Rental Rate Per Occupied Square Foot |  |  | $ | 5.71 |  |  | $ | 5.32 |  |  | 7.33 | %
Average Physical Occupancy |  |  | 95.24 | % |  | 95.60 | % |  | (0.38) | %
Average Economic Occupancy |  |  | 94.66 | % |  | 94.86 | % |  | (0.21) | %
The Lofts at Atlantic Wharf, Boston, MA 2, 3 | 86 |  |  |  |  |  |
Average Monthly Rental Rate |  |  | $ | 4,462 |  |  | $ | 4,237 |  |  | 5.31 | %
Average Rental Rate Per Occupied Square Foot |  |  | $ | 4.95 |  |  | $ | 4.71 |  |  | 5.10 | %
Average Physical Occupancy |  |  | 96.90 | % |  | 99.61 | % |  | (2.72) | %
Average Economic Occupancy |  |  | 96.55 | % |  | 99.28 | % |  | (2.75) | %
Boston Marriott Cambridge (437 rooms), Cambridge, MA 3 | N/A |  |  |  |  |  |
Average Occupancy |  |  | 81.60 | % |  | 75.80 | % |  | 7.65 | %
Average Daily Rate |  |  | $ | 331.37 |  |  | $ | 328.40 |  |  | 0.90 | %
Revenue Per Available Room |  |  | $ | 270.50 |  |  | $ | 249.06 |  |  | 8.61 | %
SAN FRANCISCO |  |  |  |  |  |  |
The Skylyne, Oakland, CA 2, 3 | 402 |  |  |  |  |  |
Average Monthly Rental Rate |  |  | $ | 3,509 |  |  | $ | 3,400 |  |  | 3.21 | %
Average Rental Rate Per Occupied Square Foot |  |  | $ | 4.45 |  |  | $ | 4.27 |  |  | 4.22 | %
Average Physical Occupancy |  |  | 93.12 | % |  | 92.79 | % |  | 0.36 | %
Average Economic Occupancy |  |  | 91.28 | % |  | 90.17 | % |  | 1.23 | %

19

| Q3 2023
Residential and hotel performance (continued)

RENTAL RATES AND OCCUPANCY - Year-over-Year

| Residential Units |  | Three Months Ended |  | Percent Change
|  | 30-Sep-23 |  | 30-Sep-22 |
WASHINGTON, DC |  |  |  |  |  |  |
Signature at Reston, Reston, VA 2, 3 | 508 |  |  |  |  |  |
Average Monthly Rental Rate |  |  | $ | 2,726 |  |  | $ | 2,671 |  |  | 2.06 | %
Average Rental Rate Per Occupied Square Foot |  |  | $ | 2.82 |  |  | $ | 2.75 |  |  | 2.55 | %
Average Physical Occupancy |  |  | 95.54 | % |  | 96.26 | % |  | (0.75) | %
Average Economic Occupancy |  |  | 94.94 | % |  | 95.93 | % |  | (1.03) | %
Total In-Service Residential Units | 1,716 |  |  |  |  |  |  |

_____________
1 Includes retail space.
2 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
3 Excludes retail space.
20

| Q3 2023
In-service property listing

as of September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  | Sub Market |  | Number of Buildings |  | Square Feet |  | Occupied % 1 |  | Leased % 2 |  | Annualized Rental Obligations Per Occupied SF 3 |
BOSTON |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| 200 Clarendon Street |  | CBD Boston MA |  | 1 |  | 1,765,911 |  |  | 95.2 | % |  | 97.3 | % |  | $ | 80.80 |  |
| 800 Boylston Street - The Prudential Center |  | CBD Boston MA |  | 1 |  | 1,274,980 |  |  | 94.6 | % |  | 95.1 | % |  | 71.16 |
| 100 Federal Street (55% ownership) |  | CBD Boston MA |  | 1 |  | 1,233,537 |  |  | 94.5 | % |  | 94.9 | % |  | 75.38 |
| 111 Huntington Avenue - The Prudential Center |  | CBD Boston MA |  | 1 |  | 860,446 |  |  | 93.5 | % |  | 95.2 | % |  | 75.47 |
| Atlantic Wharf Office (55% ownership) |  | CBD Boston MA |  | 1 |  | 789,375 |  |  | 99.8 | % |  | 99.8 | % |  | 88.01 |
| 100 Causeway Street (50% ownership) 4 |  | CBD Boston MA |  | 1 |  | 634,535 |  |  | 94.5 | % |  | 94.5 | % |  | 74.39 |
| 101 Huntington Avenue - The Prudential Center |  | CBD Boston MA |  | 1 |  | 506,476 |  |  | 98.7 | % |  | 98.7 | % |  | 59.88 |
| Prudential Center (retail shops) 5 |  | CBD Boston MA |  | — |  | 484,626 |  |  | 95.5 | % |  | 95.5 | % |  | 104.11 |
| The Hub on Causeway - Podium (50% ownership) 4 |  | CBD Boston MA |  | 1 |  | 382,988 |  |  | 93.8 | % |  | 93.8 | % |  | 64.65 |
| 888 Boylston Street - The Prudential Center |  | CBD Boston MA |  | 1 |  | 363,320 |  |  | 100.0 | % |  | 100.0 | % |  | 81.63 |
| Star Market at the Prudential Center 5 |  | CBD Boston MA |  | 1 |  | 57,236 |  |  | 100.0 | % |  | 100.0 | % |  | 61.64 |
| Subtotal |  |  |  | 10 |  | 8,353,430 |  |  | 95.6 | % |  | 96.4 | % |  | $ | 77.54 |  |
| 145 Broadway |  | East Cambridge MA |  | 1 |  | 490,086 |  |  | 99.6 | % |  | 99.6 | % |  | $ | 90.02 |  |
| 325 Main Street |  | East Cambridge MA |  | 1 |  | 414,565 |  |  | 91.4 | % |  | 91.4 | % |  | 110.87 |
| 125 Broadway 6 |  | East Cambridge MA |  | 1 |  | 271,000 |  |  | 100.0 | % |  | 100.0 | % |  | 138.52 |
| 355 Main Street |  | East Cambridge MA |  | 1 |  | 259,640 |  |  | 99.3 | % |  | 99.3 | % |  | 81.72 |
| 90 Broadway |  | East Cambridge MA |  | 1 |  | 223,771 |  |  | 98.1 | % |  | 98.1 | % |  | 77.69 |
| 255 Main Street |  | East Cambridge MA |  | 1 |  | 215,394 |  |  | 87.9 | % |  | 87.9 | % |  | 105.27 |
| 150 Broadway |  | East Cambridge MA |  | 1 |  | 177,226 |  |  | 100.0 | % |  | 100.0 | % |  | 86.86 |
| 105 Broadway |  | East Cambridge MA |  | 1 |  | 152,664 |  |  | 100.0 | % |  | 100.0 | % |  | 73.77 |
| 250 Binney Street |  | East Cambridge MA |  | 1 |  | 67,362 |  |  | 100.0 | % |  | 100.0 | % |  | 49.70 |
| University Place |  | Mid-Cambridge MA |  | 1 |  | 195,282 |  |  | 100.0 | % |  | 100.0 | % |  | 56.23 |
| Subtotal |  |  |  | 10 |  | 2,466,990 |  |  | 97.2 | % |  | 97.2 | % |  | $ | 92.83 |  |
| Bay Colony Corporate Center |  | Route 128 Mass Turnpike MA |  | 4 |  | 1,001,068 |  |  | 54.4 | % |  | 54.4 | % |  | $ | 50.30 |  |
| Reservoir Place |  | Route 128 Mass Turnpike MA |  | 1 |  | 527,029 |  |  | 50.7 | % |  | 50.7 | % |  | 46.72 |  |
| 140 Kendrick Street 7 |  | Route 128 Mass Turnpike MA |  | 3 |  | 418,604 |  |  | 84.4 | % |  | 84.4 | % |  | 52.82 |  |
| Weston Corporate Center |  | Route 128 Mass Turnpike MA |  | 1 |  | 356,995 |  |  | 100.0 | % |  | 100.0 | % |  | 58.00 |  |
| Waltham Weston Corporate Center |  | Route 128 Mass Turnpike MA |  | 1 |  | 301,611 |  |  | 90.8 | % |  | 90.8 | % |  | 44.24 |  |
| 230 CityPoint |  | Route 128 Mass Turnpike MA |  | 1 |  | 296,720 |  |  | 85.6 | % |  | 85.6 | % |  | 45.78 |  |
| 200 West Street |  | Route 128 Mass Turnpike MA |  | 1 |  | 273,682 |  |  | 83.8 | % |  | 97.5 | % |  | 77.56 |  |
| 880 Winter Street 6 |  | Route 128 Mass Turnpike MA |  | 1 |  | 243,618 |  |  | 97.2 | % |  | 97.2 | % |  | 101.98 |  |
| 10 CityPoint |  | Route 128 Mass Turnpike MA |  | 1 |  | 236,570 |  |  | 90.9 | % |  | 90.9 | % |  | 56.35 |  |
| 20 CityPoint |  | Route 128 Mass Turnpike MA |  | 1 |  | 211,476 |  |  | 98.1 | % |  | 98.1 | % |  | 56.63 |  |
| 77 CityPoint |  | Route 128 Mass Turnpike MA |  | 1 |  | 209,711 |  |  | 97.8 | % |  | 97.8 | % |  | 54.46 |  |
| 890 Winter Street |  | Route 128 Mass Turnpike MA |  | 1 |  | 179,312 |  |  | 56.2 | % |  | 60.8 | % |  | 46.35 |  |
| 153 & 211 Second Avenue |  | Route 128 Mass Turnpike MA |  | 2 |  | 136,882 |  |  | 100.0 | % |  | 100.0 | % |  | 82.79 |  |
| 1265 Main Street (50% ownership) 4 |  | Route 128 Mass Turnpike MA |  | 1 |  | 120,681 |  |  | 100.0 | % |  | 100.0 | % |  | 53.93 |  |
| Reservoir Place North |  | Route 128 Mass Turnpike MA |  | 1 |  | 73,258 |  |  | 100.0 | % |  | 100.0 | % |  | 53.10 |  |
| The Point 6 |  | Route 128 Mass Turnpike MA |  | 1 |  | 16,300 |  |  | 100.0 | % |  | 100.0 | % |  | 60.53 |  |
| 33 Hayden Avenue |  | Route 128 Northwest MA |  | 1 |  | 80,876 |  |  | 100.0 | % |  | 100.0 | % |  | 73.06 |  |
| 32 Hartwell Avenue |  | Route 128 Northwest MA |  | 1 |  | 69,154 |  |  | 100.0 | % |  | 100.0 | % |  | 28.87 |  |
| 100 Hayden Avenue |  | Route 128 Northwest MA |  | 1 |  | 55,924 |  |  | 100.0 | % |  | 100.0 | % |  | 67.57 |  |
| 92 Hayden Avenue |  | Route 128 Northwest MA |  | 1 |  | 31,100 |  |  | 100.0 | % |  | 100.0 | % |  | 47.83 |  |
| 17 Hartwell Avenue |  | Route 128 Northwest MA |  | 1 |  | 30,000 |  |  | 100.0 | % |  | 100.0 | % |  | 71.66 |  |
| Subtotal |  |  |  | 27 |  | 4,870,571 |  |  | 79.2 | % |  | 80.2 | % |  | $ | 57.74 |  |
| Boston Office Total: |  |  |  | 47 |  | 15,690,991 |  |  | 90.8 | % |  | 91.5 | % |  | $ | 74.73 |  |
Residential |  |  |  |  |  |  |  |  |  |  |  |  |
| Hub50House (440 units) (50% ownership) 4 |  | CBD Boston MA |  | 1 |  | 320,444 |  |  |  |  |  |  |  |
| The Lofts at Atlantic Wharf (86 units) |  | CBD Boston MA |  | 1 |  | 87,096 |  |  |  |  |  |  |  |
| Proto Kendall Square (280 units) |  | East Cambridge MA |  | 1 |  | 166,717 |  |  |  |  |  |  |  |
| Boston Residential Total: |  |  |  | 3 |  | 574,257 |  |  |  |  |  |  |  |

21

| Q3 2023
In-service property listing (continued)

as of September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  | Sub Market |  | Number of Buildings |  | Square Feet |  | Occupied % 1 |  | Leased % 2 |  | Annualized Rental Obligations Per Occupied SF 3 |
BOSTON (continued) |  |  |  |  |  |  |  |  |  |  |  |  |
Hotel |  |  |  |  |  |  |  |  |  |  |  |  |
| Boston Marriott Cambridge (437 rooms) |  | East Cambridge MA |  | 1 |  | 334,260 |  |  |  |  |  |  |  |
| Boston Hotel Total: |  |  |  | 1 |  | 334,260 |  |  |  |  |  |  |  |
| Boston Total: |  |  |  | 51 |  | 16,599,508 |  |  |  |  |  |  |  |
LOS ANGELES |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| Colorado Center (50% ownership) 4 |  | West Los Angeles CA |  | 6 |  | 1,131,511 |  |  | 87.8 | % |  | 87.8 | % |  | $ | 73.94 |  |
| Santa Monica Business Park (55% ownership) 4 |  | West Los Angeles CA |  | 14 |  | 1,107,256 |  |  | 83.9 | % |  | 87.1 | % |  | 72.61 |  |
| Santa Monica Business Park Retail (55% ownership) 4, 5 |  | West Los Angeles CA |  | 7 |  | 74,404 |  |  | 88.4 | % |  | 91.7 | % |  | 72.72 |  |
| Subtotal |  |  |  | 27 |  | 2,313,171 |  |  | 85.9 | % |  | 87.6 | % |  | $ | 73.28 |  |
| Los Angeles Total: |  |  | 27 |  | 2,313,171 |  |  | 85.9 | % |  | 87.6 | % |  | $ | 73.28 |  |
NEW YORK |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| 767 Fifth Avenue (The GM Building) (60% ownership) |  | Plaza District NY |  | 1 |  | 1,965,003 |  |  | 92.0 | % |  | 95.7 | % |  | $ | 162.81 |  |
| 601 Lexington Avenue (55% ownership) |  | Park Avenue NY |  | 1 |  | 1,670,790 |  |  | 95.8 | % |  | 95.8 | % |  | 93.51 |  |
| 399 Park Avenue |  | Park Avenue NY |  | 1 |  | 1,577,544 |  |  | 99.9 | % |  | 100.0 | % |  | 101.81 |  |
| 599 Lexington Avenue |  | Park Avenue NY |  | 1 |  | 1,106,373 |  |  | 92.3 | % |  | 92.4 | % |  | 87.47 |  |
| Times Square Tower (55% ownership) |  | Times Square NY |  | 1 |  | 1,238,461 |  |  | 95.6 | % |  | 95.6 | % |  | 80.54 |  |
| 250 West 55th Street |  | Times Square / West Side NY |  | 1 |  | 966,976 |  |  | 100.0 | % |  | 100.0 | % |  | 93.80 |  |
| 200 Fifth Avenue (26.69% ownership) 4, 6 |  | Flatiron District NY |  | 1 |  | 855,191 |  |  | 92.5 | % |  | 92.5 | % |  | 99.47 |  |
| Dock 72 (50% ownership) 4 |  | Brooklyn NY |  | 1 |  | 668,625 |  |  | 42.4 | % |  | 42.4 | % |  | 50.46 |  |
| 510 Madison Avenue |  | Fifth/Madison Avenue NY |  | 1 |  | 355,089 |  |  | 98.7 | % |  | 98.7 | % |  | 133.44 |  |
| Subtotal |  |  |  | 9 |  | 10,404,052 |  |  | 92.1 | % |  | 92.8 | % |  | $ | 106.42 |  |
| 510 Carnegie Center |  | Princeton NJ |  | 1 |  | 234,160 |  |  | 33.5 | % |  | 33.5 | % |  | $ | 41.83 |  |
| 206 Carnegie Center |  | Princeton NJ |  | 1 |  | 161,763 |  |  | 100.0 | % |  | 100.0 | % |  | 35.46 |  |
| 210 Carnegie Center |  | Princeton NJ |  | 1 |  | 159,468 |  |  | 79.2 | % |  | 79.2 | % |  | 38.01 |  |
| 212 Carnegie Center |  | Princeton NJ |  | 1 |  | 148,942 |  |  | 61.8 | % |  | 71.8 | % |  | 38.05 |  |
| 214 Carnegie Center |  | Princeton NJ |  | 1 |  | 146,799 |  |  | 65.9 | % |  | 65.9 | % |  | 37.24 |  |
| 506 Carnegie Center |  | Princeton NJ |  | 1 |  | 139,050 |  |  | 82.1 | % |  | 82.1 | % |  | 39.58 |  |
| 508 Carnegie Center |  | Princeton NJ |  | 1 |  | 134,433 |  |  | 100.0 | % |  | 100.0 | % |  | 41.87 |  |
| 202 Carnegie Center |  | Princeton NJ |  | 1 |  | 134,068 |  |  | 84.9 | % |  | 84.9 | % |  | 40.96 |  |
| 804 Carnegie Center |  | Princeton NJ |  | 1 |  | 130,000 |  |  | 100.0 | % |  | 100.0 | % |  | 41.26 |  |
| 504 Carnegie Center |  | Princeton NJ |  | 1 |  | 121,990 |  |  | 100.0 | % |  | 100.0 | % |  | 35.47 |  |
| 101 Carnegie Center |  | Princeton NJ |  | 1 |  | 121,619 |  |  | 100.0 | % |  | 100.0 | % |  | 38.93 |  |
| 502 Carnegie Center |  | Princeton NJ |  | 1 |  | 121,460 |  |  | 91.0 | % |  | 91.0 | % |  | 39.85 |  |
| 701 Carnegie Center |  | Princeton NJ |  | 1 |  | 120,000 |  |  | 100.0 | % |  | 100.0 | % |  | 42.41 |  |
| 104 Carnegie Center |  | Princeton NJ |  | 1 |  | 102,930 |  |  | 63.8 | % |  | 63.8 | % |  | 39.59 |  |
| 103 Carnegie Center |  | Princeton NJ |  | 1 |  | 96,331 |  |  | 73.5 | % |  | 73.5 | % |  | 36.92 |  |
| 302 Carnegie Center |  | Princeton NJ |  | 1 |  | 64,926 |  |  | 100.0 | % |  | 100.0 | % |  | 36.06 |  |
| 211 Carnegie Center |  | Princeton NJ |  | 1 |  | 47,025 |  |  | 100.0 | % |  | 100.0 | % |  | 37.82 |  |
| 201 Carnegie Center |  | Princeton NJ |  | — |  | 6,500 |  |  | 100.0 | % |  | 100.0 | % |  | 36.59 |  |
| Subtotal |  |  | 17 |  | 2,191,464 |  |  | 81.1 | % |  | 81.8 | % |  | $ | 38.96 |  |
| New York Total: |  |  |  | 26 |  | 12,595,516 |  |  | 90.2 | % |  | 90.9 | % |  | $ | 95.88 |  |
SAN FRANCISCO |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| Salesforce Tower |  | CBD San Francisco CA |  | 1 |  | 1,420,682 |  |  | 100.0 | % |  | 100.0 | % |  | $ | 112.41 |  |
| Embarcadero Center Four |  | CBD San Francisco CA |  | 1 |  | 942,043 |  |  | 95.5 | % |  | 95.5 | % |  | 93.70 |  |
| Embarcadero Center One |  | CBD San Francisco CA |  | 1 |  | 837,261 |  |  | 67.0 | % |  | 73.3 | % |  | 91.19 |  |
| Embarcadero Center Two |  | CBD San Francisco CA |  | 1 |  | 801,766 |  |  | 86.9 | % |  | 86.9 | % |  | 87.74 |  |
| Embarcadero Center Three |  | CBD San Francisco CA |  | 1 |  | 786,031 |  |  | 78.7 | % |  | 78.9 | % |  | 91.80 |  |

22

| Q3 2023
In-service property listing (continued)

as of September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  | Sub Market |  | Number of Buildings |  | Square Feet |  | Occupied % 1 |  | Leased % 2 |  | Annualized Rental Obligations Per Occupied SF 3 |
SAN FRANCISCO (continued) |  |  |  |  |  |  |  |  |  |  |  |  |
| 680 Folsom Street |  | CBD San Francisco CA |  | 2 |  | 524,793 |  |  | 98.7 | % |  | 98.7 | % |  | 74.53 |  |
| 535 Mission Street |  | CBD San Francisco CA |  | 1 |  | 307,235 |  |  | 97.9 | % |  | 97.9 | % |  | 82.97 |  |
| 690 Folsom Street |  | CBD San Francisco CA |  | 1 |  | 26,080 |  |  | 100.0 | % |  | 100.0 | % |  | 107.58 |  |
| Subtotal |  |  |  | 9 |  | 5,645,891 |  |  | 89.3 | % |  | 90.3 | % |  | $ | 95.11 |  |
| Gateway Commons (50% ownership) 4 |  | South San Francisco CA |  | 5 |  | 788,251 |  |  | 84.6 | % |  | 85.6 | % |  | $ | 66.73 |  |
| 751 Gateway (49% ownership) 4, 6 |  | South San Francisco CA |  | 1 |  | 230,592 |  |  | 100.0 | % |  | 100.0 | % |  | 78.00 |  |
| Mountain View Research Park |  | Mountain View CA |  | 15 |  | 542,264 |  |  | 65.4 | % |  | 65.4 | % |  | 70.91 |  |
| 2440 West El Camino Real |  | Mountain View CA |  | 1 |  | 142,789 |  |  | 71.5 | % |  | 71.5 | % |  | 97.00 |  |
| 453 Ravendale Drive |  | Mountain View CA |  | 1 |  | 29,620 |  |  | 100.0 | % |  | 100.0 | % |  | 51.50 |  |
| North First Business Park 8 |  | San Jose CA |  | 5 |  | 190,636 |  |  | 87.6 | % |  | 87.6 | % |  | 24.07 |  |
| Subtotal |  |  |  | 28 |  | 1,924,152 |  |  | 80.6 | % |  | 81.0 | % |  | $ | 66.50 |  |
| San Francisco Office Total: |  |  |  | 37 |  | 7,570,043 |  |  | 87.1 | % |  | 87.9 | % |  | $ | 88.36 |  |
Residential |  |  |  |  |  |  |  |  |  |  |  |  |
| The Skylyne (402 units) |  | CBD Oakland CA |  | 1 |  | 330,996 |  |  |  |  |  |  |  |
| San Francisco Residential Total: |  |  |  | 1 |  | 330,996 |  |  |  |  |  |  |  |
| San Francisco Total: |  |  |  | 38 |  | 7,901,039 |  |  |  |  |  |  |  |
SEATTLE |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| Safeco Plaza (33.67% ownership) 4 |  | CBD Seattle WA |  | 1 |  | 778,934 |  |  | 82.8 | % |  | 88.0 | % |  | $ | 44.66 |  |
| Madison Centre |  | CBD Seattle WA |  | 1 |  | 754,988 |  |  | 86.6 | % |  | 87.1 | % |  | 63.13 |  |
| Subtotal |  |  |  | 2 |  | 1,533,922 |  |  | 84.7 | % |  | 87.6 | % |  | $ | 53.94 |  |
| Seattle Total: |  |  |  | 2 |  | 1,533,922 |  |  | 84.7 | % |  | 87.6 | % |  | $ | 53.94 |  |
WASHINGTON, DC 9 |  |  |  |  |  |  |  |  |  |  |  |  |
Office |  |  |  |  |  |  |  |  |  |  |  |  |
| 901 New York Avenue (25% ownership) 4 |  | East End Washington DC |  | 1 |  | 548,346 |  |  | 82.5 | % |  | 83.3 | % |  | $ | 67.10 |  |
| Market Square North (50% ownership) 4 |  | East End Washington DC |  | 1 |  | 418,549 |  |  | 77.0 | % |  | 79.2 | % |  | 70.25 |  |
| 2100 Pennsylvania Avenue 6 |  | CBD Washington DC |  | 1 |  | 475,849 |  |  | 65.3 | % |  | 93.0 | % |  | 61.64 |  |
| 2200 Pennsylvania Avenue |  | CBD Washington DC |  | 1 |  | 459,811 |  |  | 94.9 | % |  | 94.9 | % |  | 86.05 |  |
| 1330 Connecticut Avenue |  | CBD Washington DC |  | 1 |  | 253,579 |  |  | 87.4 | % |  | 87.4 | % |  | 70.66 |  |
| Sumner Square |  | CBD Washington DC |  | 1 |  | 219,412 |  |  | 90.7 | % |  | 90.7 | % |  | 48.82 |  |
| 500 North Capitol Street, N.W. (30% ownership) 4 |  | Capitol Hill Washington DC |  | 1 |  | 230,900 |  |  | 98.5 | % |  | 98.5 | % |  | 82.65 |  |
| Capital Gallery |  | Southwest Washington DC |  | 1 |  | 176,809 |  |  | 92.7 | % |  | 92.7 | % |  | 55.36 |  |
| Subtotal |  |  |  | 8 |  | 2,783,255 |  |  | 83.8 | % |  | 89.1 | % |  | $ | 69.66 |  |
| Reston Next 6 |  | Reston VA |  | 2 |  | 1,063,296 |  |  | 71.8 | % |  | 93.7 | % |  | $ | 59.18 |  |
| South of Market |  | Reston VA |  | 3 |  | 623,250 |  |  | 99.6 | % |  | 99.6 | % |  | 55.33 |  |
| Fountain Square |  | Reston VA |  | 2 |  | 524,423 |  |  | 84.1 | % |  | 88.1 | % |  | 53.65 |  |
| One Freedom Square |  | Reston VA |  | 1 |  | 427,956 |  |  | 85.1 | % |  | 85.1 | % |  | 54.95 |  |
| Two Freedom Square |  | Reston VA |  | 1 |  | 423,222 |  |  | 100.0 | % |  | 100.0 | % |  | 52.11 |  |
| One and Two Discovery Square |  | Reston VA |  | 2 |  | 366,989 |  |  | 89.7 | % |  | 89.7 | % |  | 52.08 |  |
| One Reston Overlook |  | Reston VA |  | 1 |  | 319,519 |  |  | 89.7 | % |  | 89.7 | % |  | 48.12 |  |
| 17Fifty Presidents Street |  | Reston VA |  | 1 |  | 275,809 |  |  | 100.0 | % |  | 100.0 | % |  | 71.42 |  |
| Reston Corporate Center |  | Reston VA |  | 2 |  | 261,046 |  |  | 100.0 | % |  | 100.0 | % |  | 49.28 |  |
| Democracy Tower |  | Reston VA |  | 1 |  | 259,441 |  |  | 99.3 | % |  | 99.3 | % |  | 65.18 |  |
| Fountain Square Retail 5 |  | Reston VA |  | 1 |  | 198,172 |  |  | 82.5 | % |  | 86.7 | % |  | 52.10 |  |
| Two Reston Overlook |  | Reston VA |  | 1 |  | 134,615 |  |  | 100.0 | % |  | 100.0 | % |  | 52.31 |  |
| Avant Retail 5, 6 |  | Reston VA |  | 1 |  | 26,179 |  |  | 100.0 | % |  | 100.0 | % |  | 59.76 |  |
| Subtotal |  |  |  | 19 |  | 4,903,917 |  |  | 88.6 | % |  | 94.0 | % |  | $ | 55.83 |  |

23

| Q3 2023
In-service property listing (continued)

as of September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
|  |  | Sub Market |  | Number of Buildings |  | Square Feet |  | Occupied % 1 |  | Leased % 2 |  | Annualized Rental Obligations Per Occupied SF 3 |
WASHINGTON, DC (continued) |  |  |  |  |  |  |  |  |  |  |  |  |
| 7750 Wisconsin Avenue (50% ownership) 4 |  | Bethesda/Chevy Chase MD |  | 1 |  | 735,573 |  |  | 100.0 | % |  | 100.0 | % |  | $ | 38.49 |  |
| Wisconsin Place Office |  | Montgomery County MD |  | 1 |  | 301,327 |  |  | 67.1 | % |  | 67.8 | % |  | 42.85 |  |
| Kingstowne Two |  | Springfield VA |  | 1 |  | 156,005 |  |  | 85.5 | % |  | 85.5 | % |  | 39.92 |  |
| Kingstowne One |  | Springfield VA |  | 1 |  | 153,401 |  |  | 44.1 | % |  | 44.1 | % |  | 39.34 |  |
| Kingstowne Retail 5 |  | Springfield VA |  | 1 |  | 88,288 |  |  | 100.0 | % |  | 100.0 | % |  | 31.36 |  |
| Shady Grove Innovation District 8 |  | North Rockville MD |  | 2 |  | 133,651 |  |  | 72.2 | % |  | 72.2 | % |  | 18.00 |  |
| Subtotal |  |  |  | 7 |  | 1,568,245 |  |  | 84.4 | % |  | 84.5 | % |  | $ | 37.37 |  |
| Washington, DC Office Total: |  |  |  | 34 |  | 9,255,417 |  |  | 86.5 | % |  | 90.9 | % |  | $ | 56.77 |  |
Residential |  |  |  |  |  |  |  |  |  |  |  |  |
| Signature at Reston (508 units) |  | Reston VA |  | 1 |  | 517,783 |  |  |  |  |  |  |  |
| Washington, DC Residential Total: |  |  |  | 1 |  | 517,783 |  |  |  |  |  |  |  |
| Washington, DC Total: |  |  |  | 35 |  | 9,773,200 |  |  |  |  |  |  |  |
| Total In-Service Properties: 9 |  |  |  | 179 |  | 50,716,356 |  |  | 88.8 | % | 10 | 90.4 | % | 10 | $ | 78.33 |  | 10
| BXP’s Share of Total In-Service Properties: 3, 9 |  |  |  |  |  |  |  | 88.7 | % | 10 | 90.4 | % | 10 |  |

_____________
1 Represents signed leases for which revenue recognition has commenced in accordance with GAAP.
2 Represents signed leases for which revenue recognition has commenced in accordance with GAAP and signed leases for vacant space with future commencement dates. For additional detail, see pages 37-53.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 This is an unconsolidated joint venture property.
5 This is a retail property.
6 Not included in the Same Property analysis.
7 On July 20, 2023, the Company completed and fully placed in-service 140 Kendrick Street - Building A, redevelopment project with approximately 104,000 net rentable square feet in Needham, Massachusetts. 140 Kendrick Street - Building A is not included in the Same Property analysis.
8 Property held for redevelopment.
9 Excludes Metropolitan Square located in Washington, DC. For details related to Metropolitan Square, see page 34.
10 Excludes hotel and residential properties. For additional detail, see pages 19-20.
24

| Q3 2023
Top 20 clients listing and portfolio client diversification

as of September 30, 2023
TOP 20 CLIENTS

No. |  | Client |  | BXP’s Share of Annualized Rental Obligations 1 |  | Weighted Average Remaining Lease Term (years) 2
1 |  |  | Salesforce |  |  | 3.40 | % |  | 8.3
2 |  |  | Google |  |  | 2.81 | % |  | 13.6
3 |  |  | Biogen |  |  | 2.59 | % |  | 3.9
4 |  |  | Akamai Technologies |  |  | 2.09 | % |  | 11.1
5 |  |  | Fannie Mae |  |  | 1.52 | % |  | 13.9
6 |  |  | Kirkland & Ellis |  |  | 1.45 | % |  | 14.1
7 |  |  | Ropes & Gray |  |  | 1.43 | % |  | 6.6
8 |  |  | Millennium Management |  |  | 1.23 | % |  | 7.3
9 |  |  | Wellington Management |  |  | 1.22 | % |  | 12.4
10 |  |  | WeWork |  |  | 1.17 | % |  | 8.6
11 |  |  | Microsoft |  |  | 1.16 | % |  | 10.0
12 |  |  | Weil Gotshal & Manges |  |  | 1.10 | % |  | 10.6
13 |  |  | Arnold & Porter Kaye Scholer |  |  | 1.09 | % |  | 8.8
14 |  |  | Shearman & Sterling |  |  | 1.05 | % |  | 16.8
15 |  |  | Bank of America |  |  | 0.90 | % |  | 11.7
16 |  |  | Snap |  |  | 0.87 | % |  | 2.5
17 |  |  | Morrison & Foerster |  |  | 0.86 | % |  | 7.0
18 |  |  | Leidos |  |  | 0.84 | % |  | 9.6
19 |  |  | Aramis (Estee Lauder) |  |  | 0.82 | % |  | 16.5
20 |  |  | Mass Financial Services |  |  | 0.81 | % |  | 14.4
|  | BXP’s Share of Annualized Rental Obligations |  | 28.43 | % |  |
|  | BXP’s Share of Square Feet 1 |  |  | 22.76 | % |  |
|  | Weighted Average Remaining Lease Term (years) |  |  |  |  | 10.1

NOTABLE SIGNED DEALS 3

Client |  | Property |  | Square Feet
AstraZeneca |  | 290 Binney Street |  | 566,000 |
The Broad Institute |  | 300 Binney Street |  | 225,000 |
Volkswagen Group of America |  | Reston Next |  | 200,000 |

CLIENT DIVERSIFICATION 2

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 Based on BXP’s Share of Annualized Rental Obligations.
3 Represents leases signed with occupancy commencing in the future. The number of square feet is an estimate.
25

| Q3 2023
Occupancy by location

as of September 30, 2023
TOTAL IN-SERVICE OFFICE PROPERTIES 1 - Quarter-over-Quarter

|  | CBD |  | Suburban |  | Total
Location |  | 30-Sep-23 |  | 30-Jun-23 |  | 30-Sep-23 |  | 30-Jun-23 |  | 30-Sep-23 |  | 30-Jun-23
Boston |  | 96.0 | % |  | 95.6 | % |  | 79.2 | % |  | 79.6 | % |  | 90.8 | % |  | 90.7 | %
Los Angeles |  | 85.9 | % |  | 86.0 | % |  | — | % |  | — | % |  | 85.9 | % |  | 86.0 | %
New York |  | 92.1 | % |  | 90.3 | % |  | 81.1 | % |  | 79.9 | % |  | 90.2 | % |  | 88.5 | %
San Francisco |  | 89.3 | % |  | 89.1 | % |  | 80.6 | % |  | 85.2 | % |  | 87.1 | % |  | 88.2 | %
Seattle |  | 84.7 | % |  | 87.9 | % |  | — | % |  | — | % |  | 84.7 | % |  | 87.9 | %
Washington, DC |  | 83.8 | % |  | 78.5 | % |  | 87.6 | % |  | 88.3 | % |  | 86.5 | % |  | 84.9 | %
Total Portfolio |  | 91.4 | % |  | 90.2 | % |  | 83.2 | % |  | 84.0 | % |  | 88.8 | % |  | 88.3 | %

SAME PROPERTY OFFICE PROPERTIES 1, 2 - Year-over-Year

|  | CBD |  | Suburban |  | Total
Location |  | 30-Sep-23 |  | 30-Sep-22 |  | 30-Sep-23 |  | 30-Sep-22 |  | 30-Sep-23 |  | 30-Sep-22
Boston |  | 95.9 | % |  | 95.3 | % |  | 77.8 | % |  | 84.8 | % |  | 90.4 | % |  | 92.1 | %
Los Angeles |  | 85.9 | % |  | 90.0 | % |  | — | % |  | — | % |  | 85.9 | % |  | 90.0 | %
New York |  | 92.0 | % |  | 89.0 | % |  | 81.1 | % |  | 78.9 | % |  | 90.0 | % |  | 87.1 | %
San Francisco |  | 89.3 | % |  | 89.3 | % |  | 78.0 | % |  | 80.6 | % |  | 86.7 | % |  | 87.3 | %
Seattle |  | 84.7 | % |  | 89.1 | % |  | — | % |  | — | % |  | 84.7 | % |  | 89.1 | %
Washington, DC |  | 87.7 | % |  | 88.6 | % |  | 90.7 | % |  | 91.3 | % |  | 89.8 | % |  | 90.5 | %
Total Portfolio |  | 91.7 | % |  | 91.2 | % |  | 83.4 | % |  | 85.9 | % |  | 89.2 | % |  | 89.6 | %

_____________
1 Represents signed leases for which revenue recognition has commenced in accordance with GAAP. Includes 100% of joint venture properties. Does not include residential units and hotel.
2 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
26

| Q3 2023
Capital structure

(in thousands, except percentages)
CONSOLIDATED DEBT

| Aggregate Principal
Mortgage Notes Payable | $ | 3,300,000 |
Unsecured Line of Credit | — |
Unsecured Term Loan | 1,200,000 |
Unsecured Senior Notes, at face value | 10,550,000 |
Outstanding Principal | 15,050,000 |
Discount on Unsecured Senior Notes | (14,027) |
Deferred Financing Costs, Net | (74,258) |
Consolidated Debt | $ | 14,961,715 |

MORTGAGE NOTES PAYABLE

|  |  |  | Interest Rate |  |
Property |  | Maturity Date |  | GAAP |  | Stated |  | Outstanding Principal
601 Lexington Avenue (55% ownership) |  | January 9, 2032 |  | 2.93% |  | 2.79% |  | $ | 1,000,000 |
767 Fifth Avenue (The GM Building) (60% ownership) |  | June 9, 2027 |  | 3.64% |  | 3.43% |  | 2,300,000 |
Total |  |  |  |  |  |  |  | $ | 3,300,000 |

BOSTON PROPERTIES LIMITED PARTNERSHIP UNSECURED SENIOR NOTES 1

|  | Maturity Date |  | Effective Yield (on issue date) |  | Coupon |  | Outstanding Principal
10.5 Year Unsecured Senior Notes |  | February 1, 2024 |  | 3.92% |  | 3.80% |  | $ | 700,000 |
7 Year Unsecured Senior Notes |  | January 15, 2025 |  | 3.35% |  | 3.20% |  | 850,000 |
10 Year Unsecured Senior Notes |  | February 1, 2026 |  | 3.77% |  | 3.65% |  | 1,000,000 |
10 Year Unsecured Senior Notes |  | October 1, 2026 |  | 3.50% |  | 2.75% |  | 1,000,000 |
5 Year Unsecured Senior Notes (“green bonds”) |  | December 1, 2027 |  | 6.92% |  | 6.75% |  | 750,000 |
10 Year Unsecured Senior Notes (“green bonds”) |  | December 1, 2028 |  | 4.63% |  | 4.50% |  | 1,000,000 |
10 Year Unsecured Senior Notes (“green bonds”) |  | June 21, 2029 |  | 3.51% |  | 3.40% |  | 850,000 |
10.5 Year Unsecured Senior Notes |  | March 15, 2030 |  | 2.98% |  | 2.90% |  | 700,000 |
10.75 Year Unsecured Senior Notes |  | January 30, 2031 |  | 3.34% |  | 3.25% |  | 1,250,000 |
11 Year Unsecured Senior Notes (“green bonds”) |  | April 1, 2032 |  | 2.67% |  | 2.55% |  | 850,000 |
12 Year Unsecured Senior Notes (“green bonds”) |  | October 1, 2033 |  | 2.52% |  | 2.45% |  | 850,000 |
10.7 Year Unsecured Senior Notes (“green bonds”) |  | January 15, 2034 |  | 6.62% |  | 6.50% |  | 750,000 |
|  |  |  |  |  |  |  | $ | 10,550,000 |

CAPITALIZATION

|  | Shares/Units |  | Common Stock |  |  |
|  | Outstanding |  | Equivalents |  | Equivalent Value 2 |
Common Stock |  | 156,939 |  |  | 156,939 |  |  | $ | 9,334,732 |  |
Common Operating Partnership Units |  | 18,582 |  |  | 18,582 |  |  | 1,105,257 |  |
Total Equity |  |  |  | 175,521 |  |  | $ | 10,439,989 |  |
Consolidated Debt (A) |  |  |  |  |  | $ | 14,961,715 |  |
Add: BXP’s share of unconsolidated joint venture debt 3 |  |  |  |  |  | 1,518,195 |  |
Less: Partners’ share of consolidated debt 4 |  |  |  |  |  | 1,359,877 |  |
BXP’s Share of Debt 5 (B) |  |  |  |  |  | $ | 15,120,033 |  |
Consolidated Market Capitalization (C) |  |  |  |  |  | $ | 25,401,704 |  |
BXP’s Share of Market Capitalization 5 (D) |  |  |  |  |  | $ | 25,560,022 |  |
Consolidated Debt/Consolidated Market Capitalization (A÷C) |  |  |  |  |  | 58.90 | % |
BXP’s Share of Debt/BXP’s Share of Market Capitalization 5 (B÷D) |  |  |  |  |  | 59.16 | % |

_____________
1 All unsecured senior notes are rated BBB+ (negative), and Baa1 (negative) by S&P and Moody’s, respectively.
2 Values are based on the September 29, 2023 closing price of $59.48 per share of BXP common stock.
3 Amount is calculated based on the Company’s percentage ownership interest in the unconsolidated joint venture entities. For additional detail, see page 34.
4 Amount is calculated based on the outside partners’ percentage ownership interest in the consolidated joint venture entities. For additional detail, see page 32.
5 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
27

| Q3 2023
Debt analysis 1

as of September 30, 2023
(dollars in thousands)
UNSECURED CREDIT FACILITY - MATURES JUNE 15, 2026

|  | Facility |  | Outstanding at September 30, 2023 |  | Letters of Credit |  | Remaining Capacity at September 30, 2023
Unsecured Line of Credit |  | $ | 1,815,000 |  |  | $ | — |  |  | $ | 6,727 |  |  | $ | 1,808,273 |

UNSECURED TERM LOAN - MATURES MAY 16, 2024 2, 3

|  | Facility |  | Outstanding at September 30, 2023 |  |  |  |
Unsecured Term Loan |  | $ | 1,200,000 |  |  | $ | 1,200,000 |  |  |  |  |

UNSECURED AND SECURED DEBT ANALYSIS

|  |  |  | Weighted Average
|  | % of Total Debt |  | Stated Rates |  | GAAP Rates 4 |  | Maturity (years)
Unsecured Debt 3 |  | 78.10 | % |  | 4.01 | % |  | 4.12 | % |  | 4.9 |
Secured Debt |  | 21.90 | % |  | 3.24 | % |  | 3.42 | % |  | 5.1 |
Consolidated Debt |  | 100.00 | % |  | 3.84 | % |  | 3.97 | % |  | 4.9 |

FLOATING AND FIXED RATE DEBT ANALYSIS

|  |  |  | Weighted Average
|  | % of Total Debt |  | Stated Rates |  | GAAP Rates 4 |  | Maturity (years)
Floating Rate Debt |  | — | % |  | — | % |  | — | % |  | — |
Fixed Rate Debt 3 |  | 100.00 | % |  | 3.84 | % |  | 3.97 | % |  | 4.9 |
Consolidated Debt |  | 100.00 | % |  | 3.84 | % |  | 3.97 | % |  | 4.9 |

_____________
1 Excludes unconsolidated joint ventures. For information on BXP’s share of unconsolidated joint venture debt, see page 34.
2 The Unsecured Term Loan matures on May 16, 2024, with one, 12-month extension option, subject to customary conditions.
3 On May 2, 2023, the Company entered into four interest rate swap contracts with notional amounts aggregating $1.2 billion to effectively fix Term SOFR, the reference rate for the Unsecured Term Loan, at a weighted-average rate of 4.6420% for the period commencing on May 4, 2023 and ending on May 16, 2024.
4 The GAAP interest rate differs from the stated interest rate due to the inclusion of the amortization of financing charges and the effects of hedging transactions.
28

| Q3 2023
Senior unsecured debt covenant compliance ratios

In the fourth quarter of 2002, the Company’s Operating Partnership (Boston Properties Limited Partnership) received investment grade ratings on its senior unsecured debt securities and thereafter issued unsecured notes. The notes were issued under an indenture, dated as of December 13, 2002, by and between Boston Properties Limited Partnership and The Bank of New York Mellon Trust Company, N.A., as trustee, as supplemented from time to time (the “Indenture”), which, among other things, requires us to comply with the following limitations on incurrence of debt: Limitation on Outstanding Debt; Limitation on Secured Debt; Ratio of Annualized Consolidated EBITDA to Annualized Interest Expense; and Maintenance of Unencumbered Assets. Compliance with these restrictive covenants requires us to apply specialized terms the meanings of which are described in detail in our filings with the SEC, and to calculate ratios in the manner prescribed by the Indenture.
This section presents such ratios as of September 30, 2023 to show that the Company’s Operating Partnership was in compliance with the terms of the Indenture, which has been filed with the SEC. Management is not presenting these ratios for any other purpose or for any other period, and is not intending for these measures to otherwise provide information to investors about the Company’s financial condition or results of operations. Investors should not rely on these measures other than for purposes of testing our compliance with the Indenture.
COVENANT RATIOS AND RELATED DATA

|  |  | Senior Notes Issued Prior to December 4, 2017 |  | Senior Notes Issued On or After December 4, 2017
| Test |  | Actual
Total Outstanding Debt/Total Assets 1 | Less than 60% |  | 47.8 | % |  | 44.4 | %
Secured Debt/Total Assets | Less than 50% |  | 14.4 | % |  | 13.4 | %
Interest Coverage (Annualized Consolidated EBITDA to Annualized Interest Expense) | Greater than 1.50x |  | 3.22 |  |  | 3.22 |
Unencumbered Assets/ Unsecured Debt | Greater than 150% |  | 231.2 | % |  | 252.5 | %

_____________
1 Capitalized Property Value for senior notes issued prior to December 4, 2017 is determined for each property and is the greater of (A) annualized EBITDA capitalized at an 8.0% rate for CBD properties and a 9.0% rate for non-CBD properties, and (B) the undepreciated book value as determined under GAAP. Capitalized property value for senior notes issued on or after December 4, 2017 is determined for each property and is the greater of (x) annualized EBITDA capitalized at 7.0% and (y) the undepreciated book value as determined under GAAP.
29

| Q3 2023
Net Debt to EBITDA re

(dollars in thousands)
Reconciliation of BXP’s Share of EBITDAre and BXP’s Share of EBITDAre – cash 1

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
Net income (loss) attributable to Boston Properties, Inc. |  | $ | (111,826) |  |  | $ | 104,299 |
Add: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | (12,626) |  |  | 12,117 |
Noncontrolling interest in property partnerships |  | 20,909 |  |  | 19,768 |
Net income (loss) |  | (103,543) |  |  | 136,184 |
Add: |  |  |  |
Interest expense |  | 147,812 |  |  | 142,473 |
Depreciation and amortization expense |  | 207,435 |  |  | 202,577 |
Less: |  |  |  |
Gains on sales of real estate |  | 517 |  |  | — |
Loss from unconsolidated joint ventures |  | (247,556) |  |  | (6,668) |
Add: |  |  |  |
BXP’s share of EBITDA re from unconsolidated joint ventures 2 |  | 40,202 |  |  | 43,491 |
EBITDA re 1 |  | 538,945 |  |  | 531,393 |
Less: |  |  |  |
Partners’ share of EBITDA re from consolidated joint ventures 3 |  | 51,102 |  |  | 49,497 |
BXP’s Share of EBITDA re 1 (A) |  | 487,843 |  |  | 481,896 |
Add: |  |  |  |
Stock-based compensation expense |  | 4,843 |  |  | 14,935 |
BXP’s Share of straight-line ground rent expense adjustment 1 |  | 854 |  |  | 811 |
BXP’s Share of lease transaction costs that qualify as rent inducements 1 |  | (5,963) |  |  | 3,231 |
Less: |  |  |  |
BXP’s Share of straight-line rent 1 |  | 16,647 |  |  | 24,927 |
BXP’s Share of fair value lease revenue 1 |  | 3,907 |  |  | 6,776 |
Amortization and accretion related to sales type lease |  | 233 |  |  | 229 |
BXP’s Share of EBITDA re – cash 1 |  | $ | 466,790 |  |  | $ | 468,941 |
BXP’s Share of EBITDA re (Annualized) 4 (A x 4) |  | $ | 1,951,372 |  |  | $ | 1,927,584 |

Reconciliation of BXP’s Share of Net Debt 1

|  | 30-Sep-23 |  | 30-Jun-23
Consolidated debt |  | $ | 14,961,715 |  |  | $ | 15,456,205 |
Add: |  |  |  |
Special dividend payable |  | — |  |  | — |
Less: |  |  |  |
Cash and cash equivalents |  | 882,647 |  |  | 1,581,575 |
Cash held in escrow for 1031 exchange |  | — |  |  | — |
Net debt 1 |  | 14,079,068 |  |  | 13,874,630 |
Add: |  |  |  |
BXP’s share of unconsolidated joint venture debt 2 |  | 1,518,195 |  |  | 1,609,671 |
Partners’ share of cash and cash equivalents from consolidated joint ventures |  | 103,492 |  |  | 109,668 |
Less: |  |  |  |
BXP’s share of cash and cash equivalents from unconsolidated joint ventures |  | 104,383 |  |  | 122,784 |
Partners’ share of consolidated joint venture debt 3 |  | 1,359,877 |  |  | 1,359,380 |
BXP’s share of related party note receivable |  | 30,500 |  |  | 30,500 |
BXP’s Share of Net Debt 1 (B) |  | $ | 14,205,995 |  |  | $ | 14,081,305 |
BXP’s Share of Net Debt to BXP’s Share of EBITDA re (Annualized) [B ÷ (A x 4)] |  | 7.28 |  |  | 7.31 |

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 For disclosures related to the calculation of BXP’s share from unconsolidated joint ventures for the three months ended September 30, 2023, see pages 34 and 63.
3 For disclosures related to the calculation of Partners’ share from consolidated joint ventures for the three months ended September 30, 2023, see pages 32 and 61.
4 BXP’s Share of EBITDA re (Annualized) is calculated as the product of such amount for the quarter multiplied by four (4).
30

| Q3 2023
Debt ratios

(in thousands, except for ratio amounts)
INTEREST COVERAGE RATIO 1

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
BXP’s Share of interest expense 1 |  | $ | 161,038 |  |  | $ | 155,004 |
Less: |  |  |  |
BXP’s Share of hedge amortization, net of costs 1 |  | (473) |  |  | 1,750 |
BXP’s share of fair value interest adjustment 1 |  | 499 |  |  | 499 |
BXP’s Share of amortization of financing costs 1 |  | 5,264 |  |  | 5,274 |
Adjusted interest expense excluding capitalized interest (A) |  | 155,748 |  |  | 147,481 |
Add: |  |  |  |
BXP’s Share of capitalized interest 1 |  | 11,582 |  |  | 12,387 |
Adjusted interest expense including capitalized interest (B) |  | $ | 167,330 |  |  | $ | 159,868 |
BXP’s Share of EBITDA re – cash 1, 2 (C) |  | $ | 466,790 |  |  | $ | 468,941 |
Interest Coverage Ratio (excluding capitalized interest) (C÷A) |  | 3.00 |  |  | 3.18 |
Interest Coverage Ratio (including capitalized interest) (C÷B) |  | 2.79 |  |  | 2.93 |

FIXED CHARGE COVERAGE RATIO 1

|  | Three Months Ended
|  | 30-Sep-23 |  | 30-Jun-23
BXP’s Share of interest expense 1 |  | $ | 161,038 |  |  | $ | 155,004 |
Less: |  |  |  |
BXP’s Share of hedge amortization, net of costs 1 |  | (473) |  |  | 1,750 |
BXP’s share of fair value interest adjustment 1 |  | 499 |  |  | 499 |
BXP’s Share of amortization of financing costs 1 |  | 5,264 |  |  | 5,274 |
Add: |  |  |  |
BXP’s Share of capitalized interest 1 |  | 11,582 |  |  | 12,387 |
BXP’s Share of maintenance capital expenditures 1 |  | 16,995 |  |  | 24,132 |
Hotel improvements, equipment upgrades and replacements |  | 141 |  |  | 306 |
Total Fixed Charges (A) |  | $ | 184,466 |  |  | $ | 184,306 |
BXP’s Share of EBITDA re – cash 1, 2 (B) |  | $ | 466,790 |  |  | $ | 468,941 |
Fixed Charge Coverage Ratio (B÷A) |  | 2.53 |  |  | 2.54 |

_____________
1 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
2 For a quantitative reconciliation of BXP’s Share of EBITDA re – cash, see page 30.
31

| Q3 2023
Consolidated joint ventures

d
as of September 30, 2023
(unaudited and dollars in thousands)
BALANCE SHEET INFORMATION

|  |  |  | Norges Joint Ventures 1 |  |  |
|  |  |  | Times Square Tower |  |  |
|  |  |  | 601 Lexington Avenue / One Five Nine East 53rd Street |  |  |
|  |  |  | 100 Federal Street |  |  |
|  | 767 Fifth Avenue |  | Atlantic Wharf Office |  | Total Consolidated |
ASSETS |  | (The GM Building) 1 |  | 343 Madison Avenue 2 |  | Joint Ventures |
Real estate, net 3 |  | $ | 3,204,276 |  |  | $ | 2,440,518 |  |  | $ | 5,644,794 |  |
Cash and cash equivalents |  | 99,919 |  |  | 141,164 |  |  | 241,083 |  |
Other assets |  | 314,667 |  |  | 406,973 |  |  | 721,640 |  |
Total assets |  | $ | 3,618,862 |  |  | $ | 2,988,655 |  |  | $ | 6,607,517 |  |
LIABILITIES AND EQUITY |  |  |  |  |  |  |
Liabilities: |  |  |  |  |  |  |
Mortgage notes payable, net |  | $ | 2,287,109 |  |  | $ | 988,843 |  |  | $ | 3,275,952 |  |
Other liabilities 3 |  | 82,959 |  |  | 235,743 |  |  | 318,702 |  |
Total liabilities |  | 2,370,068 |  |  | 1,224,586 |  |  | 3,594,654 |  |
Equity: |  |  |  |  |  |  |
Boston Properties, Inc. |  | 750,914 |  |  | 672,916 |  |  | 1,423,830 |  |
Noncontrolling interests |  | 497,880 |  |  | 1,091,153 |  |  | 1,589,033 |  | 4
Total equity |  | 1,248,794 |  |  | 1,764,069 |  |  | 3,012,863 |  |
Total liabilities and equity |  | $ | 3,618,862 |  |  | $ | 2,988,655 |  |  | $ | 6,607,517 |  |
BXP’s nominal ownership percentage |  | 60% |  | 55% |  |  |
Partners’ share of cash and cash equivalents 5 |  | $ | 39,968 |  |  | $ | 63,524 |  |  | $ | 103,492 |  |
Partners’ share of consolidated debt 5 |  | $ | 914,898 |  | 6 | $ | 444,979 |  |  | $ | 1,359,877 |  |

_____________
1 Certain balances contain amounts that eliminate in consolidation.
2 See Land Parcels and Purchase Options section of this Supplemental package on page 16.
3 On August 1, 2023, the Company recorded approximately $160.1 million and $134.5 million of Right of Use Assets – Operating Leases and Lease Liabilities – Operating Leases, respectively, related to the 99-year ground lease in New York City with the Metropolitan Square Transportation Authority. For additional details, see page 16.
4 Amount excludes preferred shareholders’ capital of approximately $0.1 million.
5 Amounts represent the partners’ share based on their respective ownership percentages.
6 Amount adjusted for basis differentials.
32

| Q3 2023
Consolidated joint ventures (continued)

for the three months ended September 30, 2023
(unaudited and dollars in thousands)
RESULTS OF OPERATION S

|  |  |  | Norges Joint Ventures |  |
|  |  |  | Times Square Tower |  |
|  |  |  | 601 Lexington Avenue / One Five Nine East 53rd Street |  |
|  |  |  | 100 Federal Street |  |
|  | 767 Fifth Avenue |  | Atlantic Wharf Office |  | Total Consolidated
|  | (The GM Building) |  | 343 Madison Avenue 1 |  | Joint Ventures
Revenue |  |  |  |  |  |
Lease 2 |  | $ | 76,788 |  |  | $ | 100,329 |  |  | $ | 177,117 |
Straight-line rent |  | 5,379 |  |  | 8,537 |  |  | 13,916 |
Fair value lease revenue |  | 327 |  |  | 14 |  |  | 341 |
Termination income |  | — |  |  | 287 |  |  | 287 |
Total lease revenue |  | 82,494 |  |  | 109,167 |  |  | 191,661 |
Parking and other |  | — |  |  | 2,400 |  |  | 2,400 |
Total rental revenue 3 |  | 82,494 |  |  | 111,567 |  |  | 194,061 |
Expenses |  |  |  |  |  |
Operating |  | 33,347 |  |  | 40,449 |  |  | 73,796 |
Net Operating Income (NOI) |  | 49,147 |  |  | 71,118 |  |  | 120,265 |
Other income (expense) |  |  |  |  |  |
Development and management services revenue |  | — |  |  | — |  |  | — |
Loss from investment in securities |  | — |  |  | (3) |  |  | (3) |
Interest and other income |  | 1,092 |  |  | 1,651 |  |  | 2,743 |
Interest expense |  | (21,355) |  |  | (7,736) |  |  | (29,091) |
Depreciation and amortization expense |  | (17,244) |  |  | (23,661) |  |  | (40,905) |
General and administrative expense |  | (76) |  |  | (99) |  |  | (175) |
Total other income (expense) |  | (37,583) |  |  | (29,848) |  |  | (67,431) |
Net income |  | $ | 11,564 |  |  | $ | 41,270 |  |  | $ | 52,834 |

FUNDS FROM OPERATIONS (FFO)

BXP’s nominal ownership percentage |  | 60% |  | 55% |  |
|  |  |  | Norges Joint Ventures |  |
|  |  |  | Times Square Tower |  |
|  |  |  | 601 Lexington Avenue / One Five Nine East 53rd Street |  |
|  |  |  | 100 Federal Street |  |
|  | 767 fifth Avenue |  | Atlantic Wharf Office |  | Total Consolidated
Reconciliation of Partners’ share of FFO |  | (The GM Building) |  | 343 Madison Avenue 1 |  | Joint Ventures
Net income |  | $ | 11,564 |  |  | $ | 41,270 |  |  | $ | 52,834 |
Add: Depreciation and amortization expense |  | 17,244 |  |  | 23,661 |  |  | 40,905 |
Entity FFO |  | $ | 28,808 |  |  | $ | 64,931 |  |  | $ | 93,739 |
Noncontrolling interest in property partnerships (Partners’ NCI) 4 |  | $ | 3,589 |  |  | $ | 17,320 |  |  | $ | 20,909 |
Partners’ share of depreciation and amortization expense after BXP’s basis differential 4 |  | 7,259 |  |  | 10,915 |  |  | 18,174 |
Partners’ share FFO 4 |  | $ | 10,848 |  |  | $ | 28,235 |  |  | $ | 39,083 |
Reconciliation of BXP’s share of FFO |  |  |  |  |  |
BXP’s share of net income adjusted for partners’ NCI |  | $ | 7,975 |  |  | $ | 23,950 |  |  | $ | 31,925 |
Depreciation and amortization expense - BXP’s basis difference |  | 58 |  |  | 389 |  |  | 447 |
BXP’s share of depreciation and amortization expense |  | 9,927 |  |  | 12,357 |  |  | 22,284 |
BXP’s share of FFO |  | $ | 17,960 |  |  | $ | 36,696 |  |  | $ | 54,656 |

_____________
1 See Land Parcels and Purchase Options section of this Supplemental package on page 16.
2 Lease revenue includes recoveries from clients and service income from clients.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 Amounts represent the partners’ share based on their respective ownership percentages and are adjusted for basis differentials and the allocations of management and other fees and depreciation and amortization related to capitalized fees.
33

| Q3 2023
Unconsolidated joint ventures 1

as of September 30, 2023
(unaudited and dollars in thousands)
BALANCE SHEET INFORMATION

|  | BXP’s Nominal Ownership |  |  |  | Mortgage/Construction Loans Payable, Net |  |  |  | Interest Rate
Property |  |  | Net Equity |  |  | Maturity Date |  | Stated |  | GAAP 2
Boston |  |  |  |  |  |  |  |  |  |  |  |
The Hub on Causeway |  | 50.00 | % |  | $ | — |  |  | $ | — |  |  | — |  |  | — | % |  | — | %
100 Causeway Street |  | 50.00 | % |  | 58,174 |  |  | 166,570 |  |  | September 5, 2024 |  | 6.80 | % |  | 6.95 | %
Podium |  | 50.00 | % |  | 46,811 |  |  | 76,546 |  |  | September 8, 2025 |  | 7.35 | % |  | 7.75 | %
Hub50House |  | 50.00 | % |  | 45,413 |  |  | 91,906 |  |  | June 17, 2032 |  | 4.43 | % |  | 4.51 | %
Hotel Air Rights |  | 50.00 | % |  | 12,033 |  |  | — |  |  | — |  |  | — | % |  | — | %
1265 Main Street |  | 50.00 | % |  | 3,564 |  |  | 17,333 |  |  | January 1, 2032 |  | 3.77 | % |  | 3.84 | %
Los Angeles |  |  |  |  |  |  |  |  |  |  |  |
Santa Monica Business Park |  | 55.00 | % |  | 158,561 |  |  | 164,473 |  |  | July 19, 2025 |  | 4.06 | % |  | 4.23 | %
Colorado Center |  | 50.00 | % |  | 237,286 |  |  | 274,655 |  |  | August 9, 2027 |  | 3.56 | % |  | 3.59 | %
Beach Cities Media Center |  | 50.00 | % |  | 27,021 |  |  | — |  |  | — |  |  | — | % |  | — | %
New York |  |  |  |  |  |  |  |  |  |  |  |
Dock 72 |  | 50.00 | % |  | (12,195) |  |  | 98,686 |  |  | December 18, 2025 |  | 7.82 | % |  | 8.08 | %
360 Park Avenue South 3, 4 |  | 42.21 | % |  | 59,979 |  |  | 92,353 |  |  | December 14, 2024 |  | 7.83 | % |  | 8.28 | %
200 Fifth Avenue 4 |  | 26.69 | % |  | 83,244 |  |  | 150,193 |  |  | November 24, 2028 |  | 4.34 | % |  | 5.60 | %
3 Hudson Boulevard 5 |  | 25.00 | % |  | 115,142 |  |  | 20,000 |  |  | February 9, 2024 |  | 9.04 | % |  | 9.04 | %
San Francisco |  |  |  |  |  |  |  |  |  |  |  |
Platform 16 4 |  | 55.00 | % |  | 35,719 |  |  | — |  |  | — |  |  | — | % |  | — | %
Gateway Commons |  | 50.00 | % |  | 362,995 |  |  | — |  |  | — |  |  | — | % |  | — | %
751 Gateway |  | 49.00 | % |  | 90,733 |  |  | — |  |  | — |  |  | — | % |  | — | %
Seattle |  |  |  |  |  |  |  |  |  |  |  |
Safeco Plaza 4, 6 |  | 33.67 | % |  | 42,330 |  |  | 83,841 |  |  | September 1, 2026 |  | 4.82 | % |  | 4.96 | %
Washington, DC |  |  |  |  |  |  |  |  |  |  |  |
7750 Wisconsin Avenue (Marriott International Headquarters) |  | 50.00 | % |  | 50,442 |  |  | 125,661 |  |  | April 26, 2024 |  | 6.68 | % |  | 6.83 | %
1001 6th Street |  | 50.00 | % |  | 44,506 |  |  | — |  |  | — |  |  | — | % |  | — | %
13100 & 13150 Worldgate Drive |  | 50.00 | % |  | 17,428 |  |  | — |  |  | — |  |  | — | % |  | — | %
Market Square North |  | 50.00 | % |  | (6,020) |  |  | 62,259 |  |  | November 10, 2025 |  | 7.74 | % |  | 7.92 | %
Wisconsin Place Parking Facility |  | 33.33 | % |  | 30,890 |  |  | — |  |  | — |  |  | — | % |  | — | %
500 North Capitol Street, N.W. 7 |  | 30.00 | % |  | (9,815) |  |  | 31,104 |  |  | June 5, 2026 |  | 6.83 | % |  | 7.16 | %
901 New York Avenue |  | 25.00 | % |  | (11,944) |  |  | 52,116 |  |  | January 5, 2025 |  | 3.61 | % |  | 3.69 | %
Skymark - Reston Next Residential |  | 20.00 | % |  | 14,551 |  |  | 10,499 |  |  | May 13, 2026 |  | 7.33 | % |  | 7.65 | %
Metropolitan Square 8 |  | 20.00 | % |  | — |  |  | — |  |  | — |  |  | — | % |  | — | %
|  |  |  | 1,496,848 |  |  |  |  |  |  |  |  |
Investments with deficit balances reflected within Other Liabilities |  |  |  | 39,974 |  |  |  |  |  |  |  |  |
Investments in Unconsolidated Joint Ventures |  |  |  | $ | 1,536,822 |  |  |  |  |  |  |  |  |
Mortgage/Mezzanine/Construction Loans Payable, Net |  |  |  |  |  | $ | 1,518,195 |  |  |  |  |  |  |

34

| Q3 2023
Unconsolidated joint ventures (continued) 1

FLOATING AND FIXED RATE DEBT ANALYSIS

|  |  |  | Weighted Average
|  | % of Total Debt |  | Stated Rate |  | GAAP Rate 2 |  | Maturity (years)
Floating Rate Debt |  | 43.46 | % |  | 6.95 | % |  | 7.15 | % |  | 1.5 |
Fixed Rate Debt |  | 56.54 | % |  | 4.35 | % |  | 4.67 | % |  | 6.4 |
Total Debt |  | 100.00 | % |  | 5.48 | % |  | 5.75 | % |  | 4.3 |

_____________
1 Amounts represent BXP’s share based on its ownership percentage.
2 The GAAP interest rate differs from the stated interest rate due to the inclusion of the amortization of financing charges, which includes mortgage recording fees and the effects of hedging transactions (if any).
3 The Company’s partners will fund required capital until their aggregate investment is approximately 58% of all capital contributions; thereafter, the partners will fund required capital according to their percentage interests.
4 The Company recognized non-cash impairment charges related to its investments in 360 Park Avenue South, 200 Fifth Avenue, Platform 16, and Safeco Plaza of approximately $54.0 million, $33.4 million, $155.2 million, and $29.9 million respectively in Q3 2023.
5 The Company has provided $80.0 million of mortgage financing to the joint venture. The loan is reflected as Related Party Note Receivable, Net on the Company’s Consolidated Balance Sheets.
6 Safeco Plaza entered into an interest rate cap agreement during Q3 2023 that capped SOFR at 2.50%.
7 The indebtedness consists of (x) a $70.0 million mortgage loan payable (Note A) which bears interest at a fixed rate of 6.23% per annum, and (y) a $35.0 million mortgage loan payable (Note B) which bears interest at a fixed rate of 8.03% per annum. The Company provided $10.5 million (or 30%) of the Note B mortgage financing to the joint venture. The loan had been reflected as Related Party Note Receivable, Net on the Company’s Consolidated Balance Sheets.
8 A joint venture in which the Company owned a 20% equity interest (with an institutional investor owning the remaining 80%) completed a two-step restructuring of the ownership in Metropolitan Square, which resulted in (i) an affiliate of the existing mezzanine lender purchasing the property and becoming the new property owner, and the Company no longer having an equity interest in the property and (ii) an affiliate of the Company becoming a co-lender of up to $20.0 million under a new $100.0 million mezzanine loan (“New Mezz Loan”). Prior to the restructuring, the property was encumbered by an aggregate of $420.0 million of debt, consisting of a senior loan with an outstanding principal balance of $305.0 million (“Senior Loan”) and the existing $115.0 mezzanine loan (“Existing Mezz Loan”).
a.Step one of the restructuring was completed on September 13, 2023, and resulted in, among other things, (i) the cessation of the Company’s obligation to fund future investments through its then 20% equity interest, which caused the Company to recognize a gain on investment of approximately $35.8 million related to its deficit investment balance, which was primarily due to excess distributions, and (ii) the removal of the property from the Company’s in-service portfolio.
b.Step two of the restructuring was completed on October 2, 2023, and included (i) the sale of the property and assignment of the Senior Loan to the new owner, and (ii) the closing of a New Mezz Loan with a maximum principal amount of $100.0 million that is senior to the Existing Mezz Loan and subordinate only to the Senior Loan. The New Mezz Loan may be drawn upon for future lease-up, operating and other costs on an as needed basis, and amounts borrowed will bear interest at a per annum rate of 12%, compounded monthly. An affiliate of the Company will fund 20%, or up to $20.0 million, of any amounts borrowed under the New Mezz Loan. In addition, the Company will continue to provide property management and leasing services to the property with the potential to earn additional incentive fees. Metropolitan Square is a 657,000 square foot premier workplace located at 655 15th Street, NW in the heart of downtown Washington, DC.
35

| Q3 2023
Unconsolidated joint ventures (continued)

for the three months ended September 30, 2023
(unaudited and dollars in thousands)
RESULTS OF OPERATIONS 1

|  | Boston |  | Los Angeles |  | New York |  | San Francisco |  | Seattle |  | Washington, DC |  |  |  |  |  |  |  |  |  |  |  |  |  | Total Unconsolidated Joint Ventures
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease 2 |  | $ | 24,452 |  |  | $ | 35,503 |  |  | $ | 23,703 |  |  | $ | 12,418 |  |  | $ | 6,781 |  |  | $ | 28,949 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 131,806 |
Straight-line rent |  | 1,883 |  |  | (1,147) |  |  | 1,125 |  |  | 1,274 |  |  | 526 |  |  | 4,002 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,663 |
Fair value lease revenue |  | — |  |  | 116 |  |  | 1,538 |  |  | 18 |  |  | 1,134 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,806 |
Termination income |  | — |  |  | 1,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |
Total lease revenue |  | 26,335 |  |  | 35,472 |  |  | 26,366 |  |  | 13,710 |  |  | 8,441 |  |  | 32,951 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 143,275 |
Parking and other |  | 1,072 |  |  | 3,771 |  |  | 69 |  |  | 304 |  |  | 467 |  |  | 1,794 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,477 |
Total rental revenue 3 |  | 27,407 |  |  | 39,243 |  |  | 26,435 |  |  | 14,014 |  |  | 8,908 |  |  | 34,745 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,752 |
Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  | 11,516 |  |  | 15,923 |  |  | 14,067 |  |  | 5,513 |  |  | 3,343 |  |  | 14,374 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64,736 |
Net operating income/(loss) |  | 15,891 |  |  | 23,320 |  |  | 12,368 |  |  | 8,501 |  |  | 5,565 |  |  | 20,371 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 86,016 |
Other income/(expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Development and management services revenue |  | — |  |  | — |  |  | 596 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 596 |
Interest and other income |  | 343 |  |  | 624 |  |  | 288 |  |  | (5) |  |  | 122 |  |  | 831 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,203 |
Interest expense |  | (11,861) |  |  | (11,964) |  |  | (13,517) |  |  | — |  |  | (4,171) |  |  | (19,224) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (60,737) |
Unrealized gain on derivative instruments |  | — |  |  | — |  |  | 10,242 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,242 |
Transaction costs |  | (47) |  |  | — |  |  | — |  |  | — |  |  | (31) |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (78) |
Depreciation and amortization expense |  | (8,392) |  |  | (12,294) |  |  | (8,698) |  |  | (5,118) |  |  | (5,312) |  |  | (10,026) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (49,840) |
General and administrative expense |  | (130) |  |  | (126) |  |  | (120) |  |  | — |  |  | — |  |  | (7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (383) |
Total other income/(expense) |  | (20,087) |  |  | (23,760) |  |  | (11,209) |  |  | (5,123) |  |  | (9,392) |  |  | (28,426) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (97,997) |
Net income/(loss) |  | $ | (4,196) |  |  | $ | (440) |  |  | $ | 1,159 |  |  | $ | 3,378 |  |  | $ | (3,827) |  |  | $ | (8,055) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (11,981) |
Reconciliation of BXP’s share of Funds from Operations (FFO) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of net income/(loss) |  | $ | (2,098) |  |  | $ | (460) |  |  | $ | (1,046) |  |  | $ | 1,678 |  |  | $ | (1,293) |  |  | $ | (1,257) |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 | $ | (4,476) |
Basis differential |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Straight-line rent |  | $ | — |  |  | $ | 90 |  | 5 | $ | 347 |  | 5 | $ | 7 |  | 5 | $ | — |  |  | $ | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 444 |
Fair value lease revenue |  | — |  |  | 301 |  | 5 | 117 |  | 5 | (220) |  | 5 | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 198 |
Fair value interest adjustment |  | — |  |  | — |  |  | (499) |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (499) |
Amortization of financing costs |  | — |  |  | — |  |  | 113 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 113 |
Unrealized gain on derivative instruments |  | — |  |  | — |  |  | (2,734) |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (2,734) |
Depreciation and amortization expense | (7) |  |  | (1,088) |  | 5 | (2,019) |  | 5 | (506) |  | 5 | — |  |  | (135) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (3,755) |
Gain on investment |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 35,756 |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 | 35,756 |
Impairment loss on investment 7 |  | — |  |  | — |  |  | (87,436) |  |  | (155,245) |  |  | (29,922) |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (272,603) |
Total basis differential 8 |  | (7) |  |  | (697) |  | 5 | (92,111) |  | 5 | (155,964) |  | 5 | (29,922) |  |  | 35,621 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (243,080) |
Income/(loss) from unconsolidated joint ventures |  | (2,105) |  |  | (1,157) |  |  | (93,157) |  |  | (154,286) |  |  | (31,215) |  |  | 34,364 |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 | (247,556) |
Add: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of depreciation and amortization expense |  | 4,203 |  |  | 7,582 |  |  | 5,108 |  |  | 3,061 |  |  | 1,788 |  |  | 3,924 |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 | 25,666 |
Impairment loss on investment 7 |  | — |  |  | — |  |  | 87,436 |  |  | 155,245 |  |  | 29,922 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 272,603 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on investment |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 35,756 |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 | 35,756 |
BXP’s share of FFO |  | $ | 2,098 |  |  | $ | 6,425 |  |  | $ | (613) |  |  | $ | 4,020 |  |  | $ | 495 |  |  | $ | 2,532 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 14,957 |

_____________
1 For information on the properties included for each region and the Company’s percentage ownership in each property, see pages 21-24.
2 Lease revenue includes recoveries from clients and service income from clients.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 Reflects the allocation percentages pursuant to the achievement of specified investment return thresholds as provided for in the joint venture agreement of 901 New York Avenue.
5 The Company’s purchase price allocation under ASC 805 for certain joint ventures differs from the historical basis of the venture.
6 See page 35 for more information.
7 Represents the other-than-temporary decline in the fair values below the carrying values of certain of the Company’s investments in unconsolidated joint ventures, see page 35.
8 Represents adjustments related to the carrying values and depreciation of certain of the Company’s investment in unconsolidated joint ventures.
36

| Q3 2023
Lease expirations - All in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |  |  |
Year of Lease Expiration |  |  |  |  |  | Percentage of Total Square Feet |
|  |  | $ |  | $/PSF |  | $ |  | $/PSF |  |
2023 |  | 970,452 |  |  | 867,605 |  |  | 54,742,763 |  |  | 63.10 |  |  | 54,762,588 |  |  | 63.12 |  |  | 2.20 | % | 4
2024 |  | 2,591,457 |  |  | 2,306,437 |  |  | 149,466,197 |  |  | 64.80 |  |  | 149,909,108 |  |  | 65.00 |  |  | 5.84 | % |
2025 |  | 2,937,629 |  |  | 2,502,440 |  |  | 180,425,987 |  |  | 72.10 |  |  | 183,907,524 |  |  | 73.49 |  |  | 6.33 | % |
2026 |  | 3,254,939 |  |  | 2,588,821 |  |  | 194,552,038 |  |  | 75.15 |  |  | 202,647,794 |  |  | 78.28 |  |  | 6.55 | % |
2027 |  | 2,285,845 |  |  | 2,056,702 |  |  | 154,274,163 |  |  | 75.01 |  |  | 165,555,962 |  |  | 80.50 |  |  | 5.21 | % |
2028 |  | 3,364,220 |  |  | 2,634,943 |  |  | 218,882,100 |  |  | 83.07 |  |  | 238,881,569 |  |  | 90.66 |  |  | 6.67 | % |
2029 |  | 3,699,494 |  |  | 3,262,802 |  |  | 233,120,992 |  |  | 71.45 |  |  | 265,144,879 |  |  | 81.26 |  |  | 8.26 | % |
2030 |  | 2,753,561 |  |  | 2,645,085 |  |  | 203,318,779 |  |  | 76.87 |  |  | 223,155,047 |  |  | 84.37 |  |  | 6.69 | % |
2031 |  | 2,190,019 |  |  | 1,914,472 |  |  | 159,654,611 |  |  | 83.39 |  |  | 177,900,637 |  |  | 92.92 |  |  | 4.85 | % |
2032 |  | 2,301,188 |  |  | 1,905,742 |  |  | 149,520,287 |  |  | 78.46 |  |  | 176,057,428 |  |  | 92.38 |  |  | 4.82 | % |
Thereafter |  | 14,634,858 |  |  | 11,659,222 |  |  | 930,209,253 |  |  | 79.78 |  |  | 1,129,148,868 |  |  | 96.85 |  |  | 29.51 | % |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |  |  |
Year of Lease Expiration |  |  |  |  |  | Percentage of Total Square Feet |
|  |  | $ |  | $/PSF |  | $ |  | $/PSF |  |
2023 |  | 93,566 |  |  | 92,351 |  |  | 7,209,593 |  |  | 78.07 |  |  | 7,209,593 |  |  | 78.07 |  |  | 3.90 | % | 4
2024 |  | 57,120 |  |  | 56,120 |  |  | 3,903,444 |  |  | 69.56 |  |  | 3,922,351 |  |  | 69.89 |  |  | 2.37 | % |
2025 |  | 121,912 |  |  | 105,380 |  |  | 8,271,274 |  |  | 78.49 |  |  | 8,605,302 |  |  | 81.66 |  |  | 4.45 | % |
2026 |  | 109,944 |  |  | 96,426 |  |  | 21,373,787 |  |  | 221.66 |  |  | 22,868,653 |  |  | 237.16 |  |  | 4.08 | % |
2027 |  | 127,249 |  |  | 116,833 |  |  | 13,285,522 |  |  | 113.71 |  |  | 13,845,926 |  |  | 118.51 |  |  | 4.94 | % |
2028 |  | 90,902 |  |  | 89,125 |  |  | 10,565,579 |  |  | 118.55 |  |  | 11,063,726 |  |  | 124.14 |  |  | 3.77 | % |
2029 |  | 140,200 |  |  | 117,101 |  |  | 13,179,873 |  |  | 112.55 |  |  | 14,249,023 |  |  | 121.68 |  |  | 4.95 | % |
2030 |  | 138,145 |  |  | 99,626 |  |  | 9,233,013 |  |  | 92.68 |  |  | 10,155,120 |  |  | 101.93 |  |  | 4.21 | % |
2031 |  | 61,245 |  |  | 52,966 |  |  | 4,531,739 |  |  | 85.56 |  |  | 5,135,293 |  |  | 96.95 |  |  | 2.24 | % |
2032 |  | 101,253 |  |  | 99,123 |  |  | 7,231,104 |  |  | 72.95 |  |  | 8,476,531 |  |  | 85.52 |  |  | 4.19 | % |
Thereafter |  | 973,120 |  |  | 774,140 |  |  | 84,056,691 |  |  | 108.58 |  |  | 119,030,793 |  |  | 153.76 |  |  | 32.72 | % |

IN-SERVICE PROPERTIES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |  |  |
Year of Lease Expiration |  |  |  |  |  | Percentage of Total Square Feet |
|  |  | $ |  | $/PSF |  | $ |  | $/PSF |  |
2023 |  | 1,064,018 |  |  | 959,956 |  |  | 61,952,356 |  |  | 64.54 |  |  | 61,972,181 |  |  | 64.56 |  |  | 2.29 | % | 4
2024 |  | 2,648,577 |  |  | 2,362,557 |  |  | 153,369,641 |  |  | 64.92 |  |  | 153,831,459 |  |  | 65.11 |  |  | 5.64 | % |
2025 |  | 3,059,541 |  |  | 2,607,820 |  |  | 188,697,261 |  |  | 72.36 |  |  | 192,512,826 |  |  | 73.82 |  |  | 6.23 | % |
2026 |  | 3,364,883 |  |  | 2,685,247 |  |  | 215,925,825 |  |  | 80.41 |  |  | 225,516,447 |  |  | 83.98 |  |  | 6.41 | % |
2027 |  | 2,413,094 |  |  | 2,173,535 |  |  | 167,559,685 |  |  | 77.09 |  |  | 179,401,888 |  |  | 82.54 |  |  | 5.19 | % |
2028 |  | 3,455,122 |  |  | 2,724,068 |  |  | 229,447,679 |  |  | 84.23 |  |  | 249,945,295 |  |  | 91.75 |  |  | 6.51 | % |
2029 |  | 3,839,694 |  |  | 3,379,903 |  |  | 246,300,865 |  |  | 72.87 |  |  | 279,393,902 |  |  | 82.66 |  |  | 8.07 | % |
2030 |  | 2,891,706 |  |  | 2,744,711 |  |  | 212,551,792 |  |  | 77.44 |  |  | 233,310,167 |  |  | 85.00 |  |  | 6.55 | % |
2031 |  | 2,251,264 |  |  | 1,967,438 |  |  | 164,186,350 |  |  | 83.45 |  |  | 183,035,930 |  |  | 93.03 |  |  | 4.70 | % |
2032 |  | 2,402,441 |  |  | 2,004,865 |  |  | 156,751,391 |  |  | 78.19 |  |  | 184,533,959 |  |  | 92.04 |  |  | 4.79 | % |
Thereafter |  | 15,607,978 |  |  | 12,433,362 |  |  | 1,014,265,944 |  |  | 81.58 |  |  | 1,248,179,661 |  |  | 100.39 |  |  | 29.69 | % |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units and hotel.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
37

| Q3 2023
Lease expirations - Boston region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 440,139 |  |  | 410,566 |  |  | 24,732,684 |  |  | 60.24 |  |  | 24,740,074 |  |  | 60.26 |  | 4
2024 |  | 517,524 |  |  | 478,249 |  |  | 28,719,208 |  |  | 60.05 |  |  | 29,419,447 |  |  | 61.51 |  |
2025 |  | 943,836 |  |  | 921,321 |  |  | 57,556,216 |  |  | 62.47 |  |  | 58,468,960 |  |  | 63.46 |  |
2026 |  | 811,480 |  |  | 778,618 |  |  | 53,557,650 |  |  | 68.79 |  |  | 56,061,252 |  |  | 72.00 |  |
2027 |  | 699,311 |  |  | 691,511 |  |  | 49,830,260 |  |  | 72.06 |  |  | 54,160,578 |  |  | 78.32 |  |
2028 |  | 998,452 |  |  | 982,861 |  |  | 86,240,481 |  |  | 87.74 |  |  | 94,470,191 |  |  | 96.12 |  |
2029 |  | 1,189,512 |  |  | 1,056,302 |  |  | 64,105,449 |  |  | 60.69 |  |  | 76,704,360 |  |  | 72.62 |  |
2030 |  | 1,473,271 |  |  | 1,466,598 |  |  | 99,572,186 |  |  | 67.89 |  |  | 107,965,748 |  |  | 73.62 |  |
2031 |  | 568,599 |  |  | 501,163 |  |  | 31,122,660 |  |  | 62.10 |  |  | 34,441,670 |  |  | 68.72 |  |
2032 |  | 527,583 |  |  | 527,583 |  |  | 47,690,020 |  |  | 90.39 |  |  | 54,588,143 |  |  | 103.47 |  |
Thereafter |  | 5,103,197 |  |  | 4,158,383 |  |  | 334,829,714 |  |  | 80.52 |  |  | 406,827,513 |  |  | 97.83 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 44,900 |  |  | 44,900 |  |  | 2,909,962 |  |  | 64.81 |  |  | 2,909,962 |  |  | 64.81 |  |
2024 |  | 16,335 |  |  | 16,335 |  |  | 969,536 |  |  | 59.35 |  |  | 969,536 |  |  | 59.35 |  |
2025 |  | 41,902 |  |  | 41,587 |  |  | 3,694,103 |  |  | 88.83 |  |  | 3,724,514 |  |  | 89.56 |  |
2026 |  | 26,513 |  |  | 26,513 |  |  | 5,298,105 |  |  | 199.83 |  |  | 5,490,513 |  |  | 207.09 |  |
2027 |  | 67,909 |  |  | 61,595 |  |  | 9,722,319 |  |  | 157.84 |  |  | 10,125,220 |  |  | 164.38 |  |
2028 |  | 43,451 |  |  | 43,451 |  |  | 7,019,593 |  |  | 161.55 |  |  | 7,347,024 |  |  | 169.09 |  |
2029 |  | 64,164 |  |  | 62,814 |  |  | 8,080,088 |  |  | 128.64 |  |  | 8,751,874 |  |  | 139.33 |  |
2030 |  | 92,892 |  |  | 57,592 |  |  | 5,544,381 |  |  | 96.27 |  |  | 5,890,647 |  |  | 102.28 |  |
2031 |  | 4,266 |  |  | 4,266 |  |  | 602,630 |  |  | 141.26 |  |  | 663,828 |  |  | 155.61 |  |
2032 |  | 65,011 |  |  | 64,420 |  |  | 4,764,330 |  |  | 73.96 |  |  | 5,645,504 |  |  | 87.64 |  |
Thereafter |  | 454,430 |  |  | 380,107 |  |  | 30,885,912 |  |  | 81.26 |  |  | 53,322,785 |  |  | 140.28 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 485,039 |  |  | 455,466 |  |  | 27,642,646 |  |  | 60.69 |  |  | 27,650,036 |  |  | 60.71 |  | 4
2024 |  | 533,859 |  |  | 494,584 |  |  | 29,688,744 |  |  | 60.03 |  |  | 30,388,983 |  |  | 61.44 |  |
2025 |  | 985,738 |  |  | 962,908 |  |  | 61,250,319 |  |  | 63.61 |  |  | 62,193,474 |  |  | 64.59 |  |
2026 |  | 837,993 |  |  | 805,131 |  |  | 58,855,755 |  |  | 73.10 |  |  | 61,551,765 |  |  | 76.45 |  |
2027 |  | 767,220 |  |  | 753,106 |  |  | 59,552,579 |  |  | 79.08 |  |  | 64,285,798 |  |  | 85.36 |  |
2028 |  | 1,041,903 |  |  | 1,026,312 |  |  | 93,260,074 |  |  | 90.87 |  |  | 101,817,215 |  |  | 99.21 |  |
2029 |  | 1,253,676 |  |  | 1,119,116 |  |  | 72,185,537 |  |  | 64.50 |  |  | 85,456,234 |  |  | 76.36 |  |
2030 |  | 1,566,163 |  |  | 1,524,190 |  |  | 105,116,567 |  |  | 68.97 |  |  | 113,856,395 |  |  | 74.70 |  |
2031 |  | 572,865 |  |  | 505,429 |  |  | 31,725,290 |  |  | 62.77 |  |  | 35,105,498 |  |  | 69.46 |  |
2032 |  | 592,594 |  |  | 592,003 |  |  | 52,454,350 |  |  | 88.60 |  |  | 60,233,647 |  |  | 101.75 |  |
Thereafter |  | 5,557,627 |  |  | 4,538,490 |  |  | 365,715,626 |  |  | 80.58 |  |  | 460,150,298 |  |  | 101.39 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units and hotel.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
38

| Q3 2023
Quarterly lease expirations - Boston region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 181,904 |  |  | 181,904 |  |  | 13,976,507 |  |  | 76.83 |  |  | 13,976,507 |  |  | 76.83 |  | 4
Q4 2023 |  | 258,235 |  |  | 228,662 |  |  | 10,756,177 |  |  | 47.04 |  |  | 10,763,567 |  |  | 47.07 |  |
Total 2023 |  | 440,139 |  |  | 410,566 |  |  | 24,732,684 |  |  | 60.24 |  |  | 24,740,074 |  |  | 60.26 |  |
Q1 2024 |  | 143,914 |  |  | 115,644 |  |  | 7,523,033 |  |  | 65.05 |  |  | 8,101,688 |  |  | 70.06 |  |
Q2 2024 |  | 181,668 |  |  | 180,608 |  |  | 11,257,159 |  |  | 62.33 |  |  | 11,315,146 |  |  | 62.65 |  |
Q3 2024 |  | 54,451 |  |  | 44,507 |  |  | 2,482,819 |  |  | 55.78 |  |  | 2,497,691 |  |  | 56.12 |  |
Q4 2024 |  | 137,491 |  |  | 137,491 |  |  | 7,456,197 |  |  | 54.23 |  |  | 7,504,922 |  |  | 54.58 |  |
Total 2024 |  | 517,524 |  |  | 478,249 |  |  | 28,719,208 |  |  | 60.05 |  |  | 29,419,447 |  |  | 61.51 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 44,900 |  |  | 44,900 |  |  | 2,909,962 |  |  | 64.81 |  |  | 2,909,962 |  |  | 64.81 |  |
Total 2023 |  | 44,900 |  |  | 44,900 |  |  | 2,909,962 |  |  | 64.81 |  |  | 2,909,962 |  |  | 64.81 |  |
Q1 2024 |  | 2,902 |  |  | 2,902 |  |  | 381,293 |  |  | 131.39 |  |  | 381,293 |  |  | 131.39 |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | 298 |  |  | 298 |  |  | 161,782 |  |  | 542.89 |  |  | 161,782 |  |  | 542.89 |  |
Q4 2024 |  | 13,135 |  |  | 13,135 |  |  | 426,461 |  |  | 32.47 |  |  | 426,461 |  |  | 32.47 |  |
Total 2024 |  | 16,335 |  |  | 16,335 |  |  | 969,536 |  |  | 59.35 |  |  | 969,536 |  |  | 59.35 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 181,904 |  |  | 181,904 |  |  | 13,976,507 |  |  | 76.83 |  |  | 13,976,507 |  |  | 76.83 |  | 4
Q4 2023 |  | 303,135 |  |  | 273,562 |  |  | 13,666,139 |  |  | 49.96 |  |  | 13,673,529 |  |  | 49.98 |  |
Total 2023 |  | 485,039 |  |  | 455,466 |  |  | 27,642,646 |  |  | 60.69 |  |  | 27,650,036 |  |  | 60.71 |  |
Q1 2024 |  | 146,816 |  |  | 118,546 |  |  | 7,904,326 |  |  | 66.68 |  |  | 8,482,981 |  |  | 71.56 |  |
Q2 2024 |  | 181,668 |  |  | 180,608 |  |  | 11,257,159 |  |  | 62.33 |  |  | 11,315,146 |  |  | 62.65 |  |
Q3 2024 |  | 54,749 |  |  | 44,805 |  |  | 2,644,601 |  |  | 59.02 |  |  | 2,659,473 |  |  | 59.36 |  |
Q4 2024 |  | 150,626 |  |  | 150,626 |  |  | 7,882,658 |  |  | 52.33 |  |  | 7,931,383 |  |  | 52.66 |  |
Total 2024 |  | 533,859 |  |  | 494,584 |  |  | 29,688,744 |  |  | 60.03 |  |  | 30,388,983 |  |  | 61.44 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units and hotel.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
39

| Q3 2023
Lease expirations - Los Angeles region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
2024 |  | 88,895 |  |  | 48,892 |  |  | 3,551,269 |  |  | 72.63 |  |  | 3,597,623 |  |  | 73.58 |  |
2025 |  | 12,255 |  |  | 6,740 |  |  | 533,753 |  |  | 79.19 |  |  | 570,122 |  |  | 84.58 |  |
2026 |  | 606,033 |  |  | 333,318 |  |  | 24,331,953 |  |  | 73.00 |  |  | 25,953,426 |  |  | 77.86 |  |
2027 |  | 28,614 |  |  | 15,738 |  |  | 953,393 |  |  | 60.58 |  |  | 1,071,104 |  |  | 68.06 |  |
2028 |  | 305,816 |  |  | 158,419 |  |  | 12,612,307 |  |  | 79.61 |  |  | 14,706,223 |  |  | 92.83 |  |
2029 |  | 418,301 |  |  | 212,570 |  |  | 15,098,528 |  |  | 71.03 |  |  | 17,738,910 |  |  | 83.45 |  |
2030 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2031 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2032 |  | 241,672 |  |  | 121,023 |  |  | 9,912,105 |  |  | 81.90 |  |  | 12,759,997 |  |  | 105.43 |  |
Thereafter |  | 186,894 |  |  | 93,447 |  |  | 6,117,875 |  |  | 65.47 |  |  | 10,985,280 |  |  | 117.56 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2024 |  | 2,000 |  |  | 1,000 |  |  | 7,860 |  |  | 7.86 |  |  | 7,860 |  |  | 7.86 |  |
2025 |  | 17,218 |  |  | 9,381 |  |  | 551,377 |  |  | 58.77 |  |  | 573,790 |  |  | 61.16 |  |
2026 |  | 5,827 |  |  | 3,205 |  |  | 355,838 |  |  | 111.03 |  |  | 374,357 |  |  | 116.81 |  |
2027 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2028 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2029 |  | 38,118 |  |  | 20,965 |  |  | 1,262,581 |  |  | 60.22 |  |  | 1,350,835 |  |  | 64.43 |  |
2030 |  | 5,283 |  |  | 2,906 |  |  | 345,513 |  |  | 118.91 |  |  | 407,552 |  |  | 140.26 |  |
2031 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2032 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Thereafter |  | 17,993 |  |  | 8,997 |  |  | 354,462 |  |  | 39.40 |  |  | 449,105 |  |  | 49.92 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
2024 |  | 90,895 |  |  | 49,892 |  |  | 3,559,129 |  |  | 71.34 |  |  | 3,605,483 |  |  | 72.27 |  |
2025 |  | 29,473 |  |  | 16,121 |  |  | 1,085,130 |  |  | 67.31 |  |  | 1,143,912 |  |  | 70.96 |  |
2026 |  | 611,860 |  |  | 336,523 |  |  | 24,687,791 |  |  | 73.36 |  |  | 26,327,783 |  |  | 78.23 |  |
2027 |  | 28,614 |  |  | 15,738 |  |  | 953,393 |  |  | 60.58 |  |  | 1,071,104 |  |  | 68.06 |  |
2028 |  | 305,816 |  |  | 158,419 |  |  | 12,612,307 |  |  | 79.61 |  |  | 14,706,223 |  |  | 92.83 |  |
2029 |  | 456,419 |  |  | 233,535 |  |  | 16,361,109 |  |  | 70.06 |  |  | 19,089,745 |  |  | 81.74 |  |
2030 |  | 5,283 |  |  | 2,906 |  |  | 345,513 |  |  | 118.90 |  |  | 407,552 |  |  | 140.25 |  |
2031 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2032 |  | 241,672 |  |  | 121,023 |  |  | 9,912,105 |  |  | 81.90 |  |  | 12,759,997 |  |  | 105.43 |  |
Thereafter |  | 204,887 |  |  | 102,444 |  |  | 6,472,337 |  |  | 63.18 |  |  | 11,434,385 |  |  | 111.62 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
40

| Q3 2023
Quarterly lease expirations - Los Angeles region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
Total 2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
Q1 2024 |  | 41,335 |  |  | 22,734 |  |  | 1,651,864 |  |  | 72.66 |  |  | 1,676,623 |  |  | 73.75 |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | 25,347 |  |  | 13,941 |  |  | 1,095,000 |  |  | 78.55 |  |  | 1,095,000 |  |  | 78.55 |  |
Q4 2024 |  | 22,213 |  |  | 12,217 |  |  | 804,406 |  |  | 65.84 |  |  | 826,000 |  |  | 67.61 |  |
Total 2024 |  | 88,895 |  |  | 48,892 |  |  | 3,551,269 |  |  | 72.63 |  |  | 3,597,623 |  |  | 73.58 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q1 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | 2,000 |  |  | 1,000 |  |  | 7,860 |  |  | 7.86 |  |  | 7,860 |  |  | 7.86 |  |
Q4 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total 2024 |  | 2,000 |  |  | 1,000 |  |  | 7,860 |  |  | 7.86 |  |  | 7,860 |  |  | 7.86 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
Total 2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
Q1 2024 |  | 41,335 |  |  | 22,734 |  |  | 1,651,864 |  |  | 72.66 |  |  | 1,676,623 |  |  | 73.75 |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | 27,347 |  |  | 14,941 |  |  | 1,102,860 |  |  | 73.81 |  |  | 1,102,860 |  |  | 73.81 |  |
Q4 2024 |  | 22,213 |  |  | 12,217 |  |  | 804,406 |  |  | 65.84 |  |  | 826,000 |  |  | 67.61 |  |
Total 2024 |  | 90,895 |  |  | 49,892 |  |  | 3,559,129 |  |  | 71.34 |  |  | 3,605,483 |  |  | 72.27 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
41

| Q3 2023
Lease expirations - New York region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 58,300 |  |  | 35,587 |  |  | 3,632,258 |  |  | 102.07 |  |  | 3,632,258 |  |  | 102.07 |  |
2024 |  | 955,686 |  |  | 808,971 |  |  | 54,447,599 |  |  | 67.30 |  |  | 54,939,862 |  |  | 67.91 |  |
2025 |  | 937,759 |  |  | 627,062 |  |  | 51,903,105 |  |  | 82.77 |  |  | 52,042,768 |  |  | 82.99 |  |
2026 |  | 763,374 |  |  | 558,863 |  |  | 41,245,154 |  |  | 73.80 |  |  | 41,827,654 |  |  | 74.84 |  |
2027 |  | 398,606 |  |  | 339,700 |  |  | 25,483,076 |  |  | 75.02 |  |  | 26,079,922 |  |  | 76.77 |  |
2028 |  | 634,922 |  |  | 438,896 |  |  | 40,105,191 |  |  | 91.38 |  |  | 41,503,971 |  |  | 94.56 |  |
2029 |  | 836,817 |  |  | 804,359 |  |  | 74,069,893 |  |  | 92.09 |  |  | 79,406,136 |  |  | 98.72 |  |
2030 |  | 744,480 |  |  | 692,715 |  |  | 63,422,760 |  |  | 91.56 |  |  | 68,415,880 |  |  | 98.76 |  |
2031 |  | 397,288 |  |  | 347,169 |  |  | 26,396,178 |  |  | 76.03 |  |  | 28,043,236 |  |  | 80.78 |  |
2032 |  | 147,795 |  |  | 107,124 |  |  | 7,820,915 |  |  | 73.01 |  |  | 8,008,719 |  |  | 74.76 |  |
Thereafter |  | 5,026,683 |  |  | 3,566,451 |  |  | 339,850,262 |  |  | 95.29 |  |  | 403,591,867 |  |  | 113.16 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 11,965 |  |  | 11,226 |  |  | 2,705,097 |  |  | 240.96 |  |  | 2,705,097 |  |  | 240.96 |  |
2024 |  | 4,057 |  |  | 4,057 |  |  | 767,903 |  |  | 189.28 |  |  | 780,429 |  |  | 192.37 |  |
2025 |  | 4,179 |  |  | 4,179 |  |  | 360,000 |  |  | 86.15 |  |  | 480,000 |  |  | 114.86 |  |
2026 |  | 27,022 |  |  | 21,595 |  |  | 13,122,355 |  |  | 607.66 |  |  | 14,010,442 |  |  | 648.79 |  |
2027 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2028 |  | 2,424 |  |  | 647 |  |  | 194,807 |  |  | 301.11 |  |  | 210,981 |  |  | 326.11 |  |
2029 |  | 8,463 |  |  | 4,557 |  |  | 1,498,148 |  |  | 328.75 |  |  | 1,709,506 |  |  | 375.13 |  |
2030 |  | 2,895 |  |  | 2,053 |  |  | 671,758 |  |  | 327.27 |  |  | 787,497 |  |  | 383.66 |  |
2031 |  | 13,633 |  |  | 10,123 |  |  | 1,424,507 |  |  | 140.72 |  |  | 1,700,994 |  |  | 168.03 |  |
2032 |  | 12,182 |  |  | 10,643 |  |  | 860,270 |  |  | 80.83 |  |  | 1,064,162 |  |  | 99.99 |  |
Thereafter |  | 264,893 |  |  | 155,240 |  |  | 43,053,497 |  |  | 277.34 |  |  | 53,589,831 |  |  | 345.21 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 70,265 |  |  | 46,813 |  |  | 6,337,355 |  |  | 135.38 |  |  | 6,337,355 |  |  | 135.38 |  |
2024 |  | 959,743 |  |  | 813,028 |  |  | 55,215,502 |  |  | 67.91 |  |  | 55,720,291 |  |  | 68.53 |  |
2025 |  | 941,938 |  |  | 631,241 |  |  | 52,263,105 |  |  | 82.79 |  |  | 52,522,768 |  |  | 83.21 |  |
2026 |  | 790,396 |  |  | 580,458 |  |  | 54,367,509 |  |  | 93.66 |  |  | 55,838,096 |  |  | 96.20 |  |
2027 |  | 398,606 |  |  | 339,700 |  |  | 25,483,076 |  |  | 75.02 |  |  | 26,079,922 |  |  | 76.77 |  |
2028 |  | 637,346 |  |  | 439,543 |  |  | 40,299,998 |  |  | 91.69 |  |  | 41,714,952 |  |  | 94.91 |  |
2029 |  | 845,280 |  |  | 808,916 |  |  | 75,568,041 |  |  | 93.42 |  |  | 81,115,642 |  |  | 100.28 |  |
2030 |  | 747,375 |  |  | 694,768 |  |  | 64,094,518 |  |  | 92.25 |  |  | 69,203,377 |  |  | 99.61 |  |
2031 |  | 410,921 |  |  | 357,292 |  |  | 27,820,685 |  |  | 77.87 |  |  | 29,744,230 |  |  | 83.25 |  |
2032 |  | 159,977 |  |  | 117,767 |  |  | 8,681,185 |  |  | 73.71 |  |  | 9,072,881 |  |  | 77.04 |  |
Thereafter |  | 5,291,576 |  |  | 3,721,691 |  |  | 382,903,759 |  |  | 102.88 |  |  | 457,181,698 |  |  | 122.84 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
42

| Q3 2023
Quarterly lease expirations - New York region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 58,300 |  |  | 35,587 |  |  | 3,632,258 |  |  | 102.07 |  |  | 3,632,258 |  |  | 102.07 |  |
Total 2023 |  | 58,300 |  |  | 35,587 |  |  | 3,632,258 |  |  | 102.07 |  |  | 3,632,258 |  |  | 102.07 |  |
Q1 2024 |  | 299,768 |  |  | 297,192 |  |  | 11,741,363 |  |  | 39.51 |  |  | 11,741,363 |  |  | 39.51 |  |
Q2 2024 |  | 270,648 |  |  | 152,194 |  |  | 13,331,575 |  |  | 87.60 |  |  | 13,846,361 |  |  | 90.98 |  |
Q3 2024 |  | 191,741 |  |  | 172,221 |  |  | 14,435,910 |  |  | 83.82 |  |  | 14,451,688 |  |  | 83.91 |  |
Q4 2024 |  | 193,529 |  |  | 187,364 |  |  | 14,938,751 |  |  | 79.73 |  |  | 14,900,449 |  |  | 79.53 |  |
Total 2024 |  | 955,686 |  |  | 808,971 |  |  | 54,447,599 |  |  | 67.30 |  |  | 54,939,862 |  |  | 67.91 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 11,965 |  |  | 11,226 |  |  | 2,705,097 |  |  | 240.96 |  |  | 2,705,097 |  |  | 240.96 |  |
Total 2023 |  | 11,965 |  |  | 11,226 |  |  | 2,705,097 |  |  | 240.96 |  |  | 2,705,097 |  |  | 240.96 |  |
Q1 2024 |  | 1,140 |  |  | 1,140 |  |  | 459,275 |  |  | 402.87 |  |  | 471,801 |  |  | 413.86 |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | 2,917 |  |  | 2,917 |  |  | 308,628 |  |  | 105.80 |  |  | 308,628 |  |  | 105.80 |  |
Q4 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total 2024 |  | 4,057 |  |  | 4,057 |  |  | 767,903 |  |  | 189.28 |  |  | 780,429 |  |  | 192.37 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | 70,265 |  |  | 46,813 |  |  | 6,337,355 |  |  | 135.38 |  |  | 6,337,355 |  |  | 135.38 |  |
Total 2023 |  | 70,265 |  |  | 46,813 |  |  | 6,337,355 |  |  | 135.38 |  |  | 6,337,355 |  |  | 135.38 |  |
Q1 2024 |  | 300,908 |  |  | 298,332 |  |  | 12,200,638 |  |  | 40.90 |  |  | 12,213,164 |  |  | 40.94 |  |
Q2 2024 |  | 270,648 |  |  | 152,194 |  |  | 13,331,575 |  |  | 87.60 |  |  | 13,846,361 |  |  | 90.98 |  |
Q3 2024 |  | 194,658 |  |  | 175,138 |  |  | 14,744,538 |  |  | 84.19 |  |  | 14,760,316 |  |  | 84.28 |  |
Q4 2024 |  | 193,529 |  |  | 187,364 |  |  | 14,938,751 |  |  | 79.73 |  |  | 14,900,449 |  |  | 79.53 |  |
Total 2024 |  | 959,743 |  |  | 813,028 |  |  | 55,215,502 |  |  | 67.91 |  |  | 55,720,291 |  |  | 68.53 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
43

| Q3 2023
Lease expirations - San Francisco region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 227,127 |  |  | 192,258 |  |  | 16,824,813 |  |  | 87.51 |  |  | 16,834,537 |  |  | 87.56 |  | 4
2024 |  | 637,576 |  |  | 591,832 |  |  | 43,796,519 |  |  | 74.00 |  |  | 42,690,014 |  |  | 72.13 |  |
2025 |  | 719,599 |  |  | 690,647 |  |  | 53,988,795 |  |  | 78.17 |  |  | 55,726,944 |  |  | 80.69 |  |
2026 |  | 704,051 |  |  | 612,959 |  |  | 55,582,471 |  |  | 90.68 |  |  | 57,822,938 |  |  | 94.33 |  |
2027 |  | 526,211 |  |  | 515,247 |  |  | 49,138,199 |  |  | 95.37 |  |  | 53,076,591 |  |  | 103.01 |  |
2028 |  | 618,063 |  |  | 588,076 |  |  | 53,205,485 |  |  | 90.47 |  |  | 59,066,012 |  |  | 100.44 |  |
2029 |  | 353,181 |  |  | 334,897 |  |  | 31,753,575 |  |  | 94.82 |  |  | 36,091,059 |  |  | 107.77 |  |
2030 |  | 350,234 |  |  | 338,621 |  |  | 31,609,616 |  |  | 93.35 |  |  | 36,745,321 |  |  | 108.51 |  |
2031 |  | 1,071,855 |  |  | 927,547 |  |  | 94,667,133 |  |  | 102.06 |  |  | 106,715,098 |  |  | 115.05 |  |
2032 |  | 303,153 |  |  | 272,636 |  |  | 24,010,947 |  |  | 88.07 |  |  | 30,036,933 |  |  | 110.17 |  |
Thereafter |  | 777,461 |  |  | 777,461 |  |  | 80,178,502 |  |  | 103.13 |  |  | 93,203,376 |  |  | 119.88 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 19,506 |  |  | 19,506 |  |  | 1,252,047 |  |  | 64.19 |  |  | 1,252,047 |  |  | 64.19 |  | 4
2024 |  | 7,044 |  |  | 7,044 |  |  | 523,650 |  |  | 74.34 |  |  | 524,141 |  |  | 74.41 |  |
2025 |  | 27,142 |  |  | 27,142 |  |  | 1,958,126 |  |  | 72.14 |  |  | 2,129,667 |  |  | 78.46 |  |
2026 |  | 15,407 |  |  | 15,407 |  |  | 697,821 |  |  | 45.29 |  |  | 1,102,454 |  |  | 71.56 |  |
2027 |  | 13,794 |  |  | 13,794 |  |  | 748,180 |  |  | 54.24 |  |  | 804,288 |  |  | 58.31 |  |
2028 |  | 14,965 |  |  | 14,965 |  |  | 1,052,905 |  |  | 70.36 |  |  | 1,086,618 |  |  | 72.61 |  |
2029 |  | 3,403 |  |  | 3,403 |  |  | 314,295 |  |  | 92.36 |  |  | 349,835 |  |  | 102.80 |  |
2030 |  | 6,567 |  |  | 6,567 |  |  | 772,855 |  |  | 117.69 |  |  | 875,699 |  |  | 133.35 |  |
2031 |  | 14,256 |  |  | 10,902 |  |  | 571,841 |  |  | 52.46 |  |  | 593,962 |  |  | 54.48 |  |
2032 |  | 6,357 |  |  | 6,357 |  |  | 430,397 |  |  | 67.70 |  |  | 490,816 |  |  | 77.21 |  |
Thereafter |  | 27,050 |  |  | 27,050 |  |  | 2,432,940 |  |  | 89.94 |  |  | 2,788,848 |  |  | 103.10 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 246,633 |  |  | 211,764 |  |  | 18,076,860 |  |  | $ | 85.36 |  |  | 18,086,584 |  |  | 85.41 |  | 4
2024 |  | 644,620 |  |  | 598,876 |  |  | 44,320,169 |  |  | 74.01 |  |  | 43,214,155 |  |  | 72.16 |  |
2025 |  | 746,741 |  |  | 717,789 |  |  | 55,946,921 |  |  | 77.94 |  |  | 57,856,611 |  |  | 80.60 |  |
2026 |  | 719,458 |  |  | 628,366 |  |  | 56,280,292 |  |  | 89.57 |  |  | 58,925,392 |  |  | 93.78 |  |
2027 |  | 540,005 |  |  | 529,041 |  |  | 49,886,379 |  |  | 94.30 |  |  | 53,880,879 |  |  | 101.85 |  |
2028 |  | 633,028 |  |  | 603,041 |  |  | 54,258,390 |  |  | 89.97 |  |  | 60,152,630 |  |  | 99.75 |  |
2029 |  | 356,584 |  |  | 338,300 |  |  | 32,067,870 |  |  | 94.79 |  |  | 36,440,894 |  |  | 107.72 |  |
2030 |  | 356,801 |  |  | 345,188 |  |  | 32,382,471 |  |  | 93.81 |  |  | 37,621,020 |  |  | 108.99 |  |
2031 |  | 1,086,111 |  |  | 938,449 |  |  | 95,238,974 |  |  | 101.49 |  |  | 107,309,060 |  |  | 114.35 |  |
2032 |  | 309,510 |  |  | 278,993 |  |  | 24,441,344 |  |  | 87.61 |  |  | 30,527,749 |  |  | 109.42 |  |
Thereafter |  | 804,511 |  |  | 804,511 |  |  | 82,611,442 |  |  | 102.69 |  |  | 95,992,224 |  |  | 119.32 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
44

| Q3 2023
Quarterly lease expirations - San Francisco region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 89,786 |  |  | 89,786 |  |  | 8,100,793 |  |  | 90.22 |  |  | 8,100,793 |  |  | 90.22 |  | 4
Q4 2023 |  | 137,341 |  |  | 102,472 |  |  | 8,724,020 |  |  | 85.14 |  |  | 8,733,743 |  |  | 85.23 |  |
Total 2023 |  | 227,127 |  |  | 192,258 |  |  | 16,824,813 |  |  | 87.51 |  |  | 16,834,537 |  |  | 87.56 |  |
Q1 2024 |  | 48,448 |  |  | 30,616 |  |  | 2,271,758 |  |  | 74.20 |  |  | 2,290,335 |  |  | 74.81 |  |
Q2 2024 |  | 290,878 |  |  | 273,202 |  |  | 18,424,181 |  |  | 67.44 |  |  | 16,913,316 |  |  | 61.91 |  |
Q3 2024 |  | 48,821 |  |  | 41,850 |  |  | 3,214,325 |  |  | 76.81 |  |  | 3,250,112 |  |  | 77.66 |  |
Q4 2024 |  | 249,429 |  |  | 246,165 |  |  | 19,886,255 |  |  | 80.78 |  |  | 20,236,251 |  |  | 82.21 |  |
Total 2024 |  | 637,576 |  |  | 591,832 |  |  | 43,796,519 |  |  | 74.00 |  |  | 42,690,014 |  |  | 72.13 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 12,345 |  |  | 12,345 |  |  | 836,766 |  |  | 67.78 |  |  | 836,766 |  |  | 67.78 |  | 4
Q4 2023 |  | 7,161 |  |  | 7,161 |  |  | 415,281 |  |  | 57.99 |  |  | 415,281 |  |  | 57.99 |  |
Total 2023 |  | 19,506 |  |  | 19,506 |  |  | 1,252,047 |  |  | 64.19 |  |  | 1,252,047 |  |  | 64.19 |  |
Q1 2024 |  | 6,624 |  |  | 6,624 |  |  | 504,905 |  |  | 76.22 |  |  | 504,905 |  |  | 76.22 |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2024 |  | 420 |  |  | 420 |  |  | 18,744 |  |  | 44.63 |  |  | 19,236 |  |  | 45.80 |  |
Total 2024 |  | 7,044 |  |  | 7,044 |  |  | 523,650 |  |  | 74.34 |  |  | 524,141 |  |  | 74.41 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 102,131 |  |  | 102,131 |  |  | 8,937,559 |  |  | 87.51 |  |  | 8,937,559 |  |  | 87.51 |  | 4
Q4 2023 |  | 144,502 |  |  | 109,633 |  |  | 9,139,301 |  |  | 83.36 |  |  | 9,149,024 |  |  | 83.45 |  |
Total 2023 |  | 246,633 |  |  | 211,764 |  |  | 18,076,860 |  |  | 85.36 |  |  | 18,086,584 |  |  | 85.41 |  |
Q1 2024 |  | 55,072 |  |  | 37,240 |  |  | 2,776,663 |  |  | 74.56 |  |  | 2,795,240 |  |  | 75.06 |  |
Q2 2024 |  | 290,878 |  |  | 273,202 |  |  | 18,424,181 |  |  | 67.44 |  |  | 16,913,316 |  |  | 61.91 |  |
Q3 2024 |  | 48,821 |  |  | 41,850 |  |  | 3,214,325 |  |  | 76.81 |  |  | 3,250,112 |  |  | 77.66 |  |
Q4 2024 |  | 249,849 |  |  | 246,585 |  |  | 19,904,999 |  |  | 80.72 |  |  | 20,255,487 |  |  | 82.14 |  |
Total 2024 |  | 644,620 |  |  | 598,876 |  |  | 44,320,169 |  |  | 74.01 |  |  | 43,214,155 |  |  | 72.16 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
45

| Q3 2023
Lease expirations - Seattle region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 107,566 |  |  | 95,446 |  |  | 5,314,100 |  |  | 55.68 |  |  | 5,314,100 |  |  | 55.68 |  | 4
2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |
2025 |  | 32,959 |  |  | 16,876 |  |  | 981,024 |  |  | 58.13 |  |  | 997,265 |  |  | 59.09 |  |
2026 |  | 34,510 |  |  | 33,642 |  |  | 1,988,042 |  |  | 59.09 |  |  | 2,093,885 |  |  | 62.24 |  |
2027 |  | 76,817 |  |  | 73,898 |  |  | 4,349,468 |  |  | 58.86 |  |  | 4,667,274 |  |  | 63.16 |  |
2028 |  | 646,975 |  |  | 310,444 |  |  | 17,091,715 |  |  | 55.06 |  |  | 18,631,669 |  |  | 60.02 |  |
2029 |  | 254,663 |  |  | 234,605 |  |  | 14,349,056 |  |  | 61.16 |  |  | 16,684,267 |  |  | 71.12 |  |
2030 |  | 33,054 |  |  | 33,054 |  |  | 2,004,357 |  |  | 60.64 |  |  | 2,281,026 |  |  | 69.01 |  |
2031 |  | 4,742 |  |  | 1,597 |  |  | 90,014 |  |  | 56.38 |  |  | 106,283 |  |  | 66.57 |  |
2032 |  | 64,737 |  |  | 51,388 |  |  | 3,809,661 |  |  | 74.14 |  |  | 4,591,102 |  |  | 89.34 |  |
Thereafter |  | 20,297 |  |  | 6,834 |  |  | 348,534 |  |  | 51.00 |  |  | 482,453 |  |  | 70.60 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2025 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2026 |  | 3,686 |  |  | 1,241 |  |  | 94,674 |  |  | 76.28 |  |  | 94,674 |  |  | 76.28 |  |
2027 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2028 |  | 945 |  |  | 945 |  |  | 52,739 |  |  | 55.81 |  |  | 57,181 |  |  | 60.51 |  |
2029 |  | 1,040 |  |  | 350 |  |  | 6,303 |  |  | 18.00 |  |  | 7,306 |  |  | 20.87 |  |
2030 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2031 |  | 3,048 |  |  | 3,048 |  |  | 190,425 |  |  | 62.48 |  |  | 223,130 |  |  | 73.21 |  |
2032 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Thereafter |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 107,566 |  |  | 95,446 |  |  | 5,314,100 |  |  | 55.68 |  |  | 5,314,100 |  |  | 55.68 |  | 4
2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |
2025 |  | 32,959 |  |  | 16,876 |  |  | 981,024 |  |  | 58.13 |  |  | 997,265 |  |  | 59.09 |  |
2026 |  | 38,196 |  |  | 34,883 |  |  | 2,082,716 |  |  | 59.71 |  |  | 2,188,559 |  |  | 62.74 |  |
2027 |  | 76,817 |  |  | 73,898 |  |  | 4,349,468 |  |  | 58.86 |  |  | 4,667,274 |  |  | 63.16 |  |
2028 |  | 647,920 |  |  | 311,389 |  |  | 17,144,454 |  |  | 55.06 |  |  | 18,688,850 |  |  | 60.02 |  |
2029 |  | 255,703 |  |  | 234,955 |  |  | 14,355,359 |  |  | 61.10 |  |  | 16,691,573 |  |  | 71.04 |  |
2030 |  | 33,054 |  |  | 33,054 |  |  | 2,004,357 |  |  | 60.64 |  |  | 2,281,026 |  |  | 69.01 |  |
2031 |  | 7,790 |  |  | 4,645 |  |  | 280,439 |  |  | 60.37 |  |  | 329,413 |  |  | 70.92 |  |
2032 |  | 64,737 |  |  | 51,388 |  |  | 3,809,661 |  |  | 74.14 |  |  | 4,591,102 |  |  | 89.34 |  |
Thereafter |  | 20,297 |  |  | 6,834 |  |  | 348,534 |  |  | 51.00 |  |  | 482,453 |  |  | 70.60 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
46

| Q3 2023
Quarterly lease expirations - Seattle region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 22,189 |  |  | 22,189 |  |  | 1,329,994 |  |  | 59.94 |  |  | 1,329,994 |  |  | 59.94 |  | 4
Q4 2023 |  | 85,377 |  |  | 73,257 |  |  | 3,984,106 |  |  | 54.39 |  |  | 3,984,106 |  |  | 54.39 |  |
Total 2023 |  | 107,566 |  |  | 95,446 |  |  | 5,314,100 |  |  | 55.68 |  |  | 5,314,100 |  |  | 55.68 |  |
Q1 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |
Total 2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q1 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Total 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 22,189 |  |  | 22,189 |  |  | 1,329,994 |  |  | 59.94 |  |  | 1,329,994 |  |  | 59.94 |  | 4
Q4 2023 |  | 85,377 |  |  | 73,257 |  |  | 3,984,106 |  |  | 54.39 |  |  | 3,984,106 |  |  | 54.39 |  |
Total 2023 |  | 107,566 |  |  | 95,446 |  |  | 5,314,100 |  |  | 55.68 |  |  | 5,314,100 |  |  | 55.68 |  |
Q1 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2024 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q4 2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |
Total 2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
47

| Q3 2023
Lease expirations - Washington, DC region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 132,652 |  |  | 131,181 |  |  | 4,063,246 |  |  | 30.97 |  |  | 4,065,957 |  |  | 30.99 |  | 4
2024 |  | 388,436 |  |  | 375,795 |  |  | 18,786,268 |  |  | 49.99 |  |  | 19,094,183 |  |  | 50.81 |  |
2025 |  | 291,221 |  |  | 239,794 |  |  | 15,463,094 |  |  | 64.48 |  |  | 16,101,465 |  |  | 67.15 |  |
2026 |  | 335,491 |  |  | 271,421 |  |  | 17,846,768 |  |  | 65.75 |  |  | 18,888,639 |  |  | 69.59 |  |
2027 |  | 556,286 |  |  | 420,608 |  |  | 24,519,767 |  |  | 58.30 |  |  | 26,500,493 |  |  | 63.01 |  |
2028 |  | 159,992 |  |  | 156,247 |  |  | 9,626,921 |  |  | 61.61 |  |  | 10,503,503 |  |  | 67.22 |  |
2029 |  | 647,020 |  |  | 620,069 |  |  | 33,744,491 |  |  | 54.42 |  |  | 38,520,147 |  |  | 62.12 |  |
2030 |  | 152,522 |  |  | 114,097 |  |  | 6,709,860 |  |  | 58.81 |  |  | 7,747,072 |  |  | 67.90 |  |
2031 |  | 147,535 |  |  | 136,996 |  |  | 7,378,626 |  |  | 53.86 |  |  | 8,594,350 |  |  | 62.73 |  |
2032 |  | 1,016,248 |  |  | 825,988 |  |  | 56,276,639 |  |  | 68.13 |  |  | 66,072,534 |  |  | 79.99 |  |
Thereafter |  | 3,520,326 |  |  | 3,056,646 |  |  | 168,884,366 |  |  | 55.25 |  |  | 214,058,379 |  |  | 70.03 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 17,195 |  |  | 16,719 |  |  | 342,487 |  |  | 20.49 |  |  | 342,487 |  |  | 20.49 |  | 4
2024 |  | 27,684 |  |  | 27,684 |  |  | 1,634,495 |  |  | 59.04 |  |  | 1,640,385 |  |  | 59.25 |  |
2025 |  | 31,471 |  |  | 23,091 |  |  | 1,707,668 |  |  | 73.95 |  |  | 1,697,331 |  |  | 73.51 |  |
2026 |  | 31,489 |  |  | 28,465 |  |  | 1,804,994 |  |  | 63.41 |  |  | 1,796,213 |  |  | 63.10 |  |
2027 |  | 45,546 |  |  | 41,444 |  |  | 2,815,023 |  |  | 67.92 |  |  | 2,916,418 |  |  | 70.37 |  |
2028 |  | 29,117 |  |  | 29,117 |  |  | 2,245,535 |  |  | 77.12 |  |  | 2,361,922 |  |  | 81.12 |  |
2029 |  | 25,012 |  |  | 25,012 |  |  | 2,018,458 |  |  | 80.70 |  |  | 2,079,667 |  |  | 83.15 |  |
2030 |  | 30,508 |  |  | 30,508 |  |  | 1,898,506 |  |  | 62.23 |  |  | 2,193,725 |  |  | 71.91 |  |
2031 |  | 26,042 |  |  | 24,627 |  |  | 1,742,336 |  |  | 70.75 |  |  | 1,953,379 |  |  | 79.32 |  |
2032 |  | 17,703 |  |  | 17,703 |  |  | 1,176,107 |  |  | 66.44 |  |  | 1,276,049 |  |  | 72.08 |  |
Thereafter |  | 208,754 |  |  | 202,746 |  |  | 7,329,880 |  |  | 36.15 |  |  | 8,880,224 |  |  | 43.80 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 149,847 |  |  | 147,900 |  |  | 4,405,733 |  |  | 29.79 |  |  | 4,408,444 |  |  | 29.81 |  | 4
2024 |  | 416,120 |  |  | 403,479 |  |  | 20,420,763 |  |  | 50.61 |  |  | 20,734,568 |  |  | 51.39 |  |
2025 |  | 322,692 |  |  | 262,885 |  |  | 17,170,762 |  |  | 65.32 |  |  | 17,798,796 |  |  | 67.71 |  |
2026 |  | 366,980 |  |  | 299,886 |  |  | 19,651,762 |  |  | 65.53 |  |  | 20,684,852 |  |  | 68.98 |  |
2027 |  | 601,832 |  |  | 462,052 |  |  | 27,334,790 |  |  | 59.16 |  |  | 29,416,911 |  |  | 63.67 |  |
2028 |  | 189,109 |  |  | 185,364 |  |  | 11,872,456 |  |  | 64.05 |  |  | 12,865,425 |  |  | 69.41 |  |
2029 |  | 672,032 |  |  | 645,081 |  |  | 35,762,949 |  |  | 55.44 |  |  | 40,599,814 |  |  | 62.94 |  |
2030 |  | 183,030 |  |  | 144,605 |  |  | 8,608,366 |  |  | 59.53 |  |  | 9,940,797 |  |  | 68.74 |  |
2031 |  | 173,577 |  |  | 161,623 |  |  | 9,120,962 |  |  | 56.43 |  |  | 10,547,729 |  |  | 65.26 |  |
2032 |  | 1,033,951 |  |  | 843,691 |  |  | 57,452,746 |  |  | 68.10 |  |  | 67,348,583 |  |  | 79.83 |  |
Thereafter |  | 3,729,080 |  |  | 3,259,392 |  |  | 176,214,246 |  |  | 54.06 |  |  | 222,938,603 |  |  | 68.40 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
48

| Q3 2023
Quarterly lease expirations - Washington, DC region in-service properties 1, 2, 3

as of September 30, 2023
OFFICE

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 18,605 |  |  | 18,605 |  |  | 615,758 |  |  | 33.10 |  |  | 615,758 |  |  | 33.10 |  | 4
Q4 2023 |  | 114,047 |  |  | 112,576 |  |  | 3,447,488 |  |  | 30.62 |  |  | 3,450,199 |  |  | 30.65 |  |
Total 2023 |  | 132,652 |  |  | 131,181 |  |  | 4,063,246 |  |  | 30.97 |  |  | 4,065,957 |  |  | 30.99 |  |
Q1 2024 |  | 26,686 |  |  | 21,087 |  |  | 1,285,886 |  |  | 60.98 |  |  | 1,289,072 |  |  | 61.13 |  |
Q2 2024 |  | 28,173 |  |  | 28,173 |  |  | 1,515,668 |  |  | 53.80 |  |  | 1,542,512 |  |  | 54.75 |  |
Q3 2024 |  | 53,773 |  |  | 46,730 |  |  | 2,037,716 |  |  | 43.61 |  |  | 2,089,256 |  |  | 44.71 |  |
Q4 2024 |  | 279,804 |  |  | 279,804 |  |  | 13,946,998 |  |  | 49.85 |  |  | 14,173,343 |  |  | 50.65 |  |
Total 2024 |  | 388,436 |  |  | 375,795 |  |  | 18,786,268 |  |  | 49.99 |  |  | 19,094,183 |  |  | 50.81 |  |

RETAIL

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 4,527 |  |  | 4,527 |  |  | 70,893 |  |  | 15.66 |  |  | 70,893 |  |  | 15.66 |  | 4
Q4 2023 |  | 12,668 |  |  | 12,192 |  |  | 271,594 |  |  | 22.28 |  |  | 271,594 |  |  | 22.28 |  |
Total 2023 |  | 17,195 |  |  | 16,719 |  |  | 342,487 |  |  | 20.49 |  |  | 342,487 |  |  | 20.49 |  |
Q1 2024 |  | 1,237 |  |  | 1,237 |  |  | 101,028 |  |  | 81.67 |  |  | 101,028 |  |  | 81.67 |  |
Q2 2024 |  | 14,584 |  |  | 14,584 |  |  | 987,320 |  |  | 67.70 |  |  | 987,320 |  |  | 67.70 |  |
Q3 2024 |  | 1,702 |  |  | 1,702 |  |  | 142,348 |  |  | 83.64 |  |  | 142,348 |  |  | 83.64 |  |
Q4 2024 |  | 10,161 |  |  | 10,161 |  |  | 403,799 |  |  | 39.74 |  |  | 409,689 |  |  | 40.32 |  |
Total 2024 |  | 27,684 |  |  | 27,684 |  |  | 1,634,495 |  |  | 59.04 |  |  | 1,640,385 |  |  | 59.25 |  |

TOTAL PROPERTY TYPES

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Lease Expiration |  |  |  |  |
by Quarter |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
Q1 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q2 2023 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
Q3 2023 |  | 23,132 |  |  | 23,132 |  |  | 686,651 |  |  | 29.68 |  |  | 686,651 |  |  | 29.68 |  | 4
Q4 2023 |  | 126,715 |  |  | 124,768 |  |  | 3,719,082 |  |  | 29.81 |  |  | 3,721,793 |  |  | 29.83 |  |
Total 2023 |  | 149,847 |  |  | 147,900 |  |  | 4,405,733 |  |  | 29.79 |  |  | 4,408,444 |  |  | 29.81 |  |
Q1 2024 |  | 27,923 |  |  | 22,324 |  |  | 1,386,914 |  |  | 62.13 |  |  | 1,390,100 |  |  | 62.27 |  |
Q2 2024 |  | 42,757 |  |  | 42,757 |  |  | 2,502,988 |  |  | 58.54 |  |  | 2,529,832 |  |  | 59.17 |  |
Q3 2024 |  | 55,475 |  |  | 48,432 |  |  | 2,180,064 |  |  | 45.01 |  |  | 2,231,604 |  |  | 46.08 |  |
Q4 2024 |  | 289,965 |  |  | 289,965 |  |  | 14,350,797 |  |  | 49.49 |  |  | 14,583,032 |  |  | 50.29 |  |
Total 2024 |  | 416,120 |  |  | 403,479 |  |  | 20,420,763 |  |  | 50.61 |  |  | 20,734,568 |  |  | 51.39 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
49

| Q3 2023
Lease expirations - CBD properties 1, 2, 3

as of September 30, 2023
Boston

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 234,978 |  |  | 205,405 |  |  | 11,374,121 |  |  | 55.37 |  |  | 11,381,511 |  |  | 55.41 |  | 4
2024 |  | 188,424 |  |  | 149,149 |  |  | 11,442,998 |  |  | 76.72 |  |  | 12,083,692 |  |  | 81.02 |  |
2025 |  | 321,070 |  |  | 298,240 |  |  | 24,638,997 |  |  | 82.61 |  |  | 25,236,945 |  |  | 84.62 |  |
2026 |  | 586,892 |  |  | 554,030 |  |  | 44,374,324 |  |  | 80.09 |  |  | 45,586,863 |  |  | 82.28 |  |
2027 |  | 497,297 |  |  | 483,182 |  |  | 43,850,052 |  |  | 90.75 |  |  | 48,183,208 |  |  | 99.72 |  |
2028 |  | 788,704 |  |  | 773,113 |  |  | 79,472,687 |  |  | 102.80 |  |  | 87,030,218 |  |  | 112.57 |  |
2029 |  | 793,838 |  |  | 659,278 |  |  | 49,767,479 |  |  | 75.49 |  |  | 59,669,744 |  |  | 90.51 |  |
2030 |  | 1,386,156 |  |  | 1,344,183 |  |  | 95,619,914 |  |  | 71.14 |  |  | 103,164,512 |  |  | 76.75 |  |
2031 |  | 38,500 |  |  | 31,404 |  |  | 2,589,436 |  |  | 82.45 |  |  | 3,030,209 |  |  | 96.49 |  |
2032 |  | 439,405 |  |  | 438,814 |  |  | 36,608,651 |  |  | 83.43 |  |  | 41,235,843 |  |  | 93.97 |  |
Thereafter |  | 5,037,677 |  |  | 4,018,540 |  |  | 337,392,100 |  |  | 83.96 |  |  | 426,522,042 |  |  | 106.14 |  |

Los Angeles

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 4,668 |  |  | 2,567 |  |  | 175,662 |  |  | 68.43 |  |  | 175,662 |  |  | 68.43 |  |
2024 |  | 90,895 |  |  | 49,892 |  |  | 3,559,129 |  |  | 71.34 |  |  | 3,605,483 |  |  | 72.27 |  |
2025 |  | 29,473 |  |  | 16,122 |  |  | 1,085,130 |  |  | 67.31 |  |  | 1,143,912 |  |  | 70.96 |  |
2026 |  | 611,860 |  |  | 336,523 |  |  | 24,687,791 |  |  | 73.36 |  |  | 26,327,783 |  |  | 78.23 |  |
2027 |  | 28,614 |  |  | 15,738 |  |  | 953,393 |  |  | 60.58 |  |  | 1,071,104 |  |  | 68.06 |  |
2028 |  | 305,816 |  |  | 158,419 |  |  | 12,612,307 |  |  | 79.61 |  |  | 14,706,223 |  |  | 92.83 |  |
2029 |  | 456,419 |  |  | 233,535 |  |  | 16,361,109 |  |  | 70.06 |  |  | 19,089,745 |  |  | 81.74 |  |
2030 |  | 5,283 |  |  | 2,906 |  |  | 345,513 |  |  | 118.91 |  |  | 407,552 |  |  | 140.26 |  |
2031 |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |
2032 |  | 241,672 |  |  | 121,023 |  |  | 9,912,105 |  |  | 81.9 |  |  | 12,759,997 |  |  | 105.43 |  |
Thereafter |  | 204,887 |  |  | 102,444 |  |  | 6,472,337 |  |  | 63.18 |  |  | 11,434,385 |  |  | 111.62 |  |

New York

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 69,389 |  |  | 45,937 |  |  | 6,305,842 |  |  | 137.27 |  |  | 6,305,842 |  |  | 137.27 |  |
2024 |  | 561,502 |  |  | 414,787 |  |  | 40,469,816 |  |  | 97.57 |  |  | 40,946,673 |  |  | 98.72 |  |
2025 |  | 688,670 |  |  | 377,973 |  |  | 42,247,625 |  |  | 111.77 |  |  | 42,343,151 |  |  | 112.03 |  |
2026 |  | 512,465 |  |  | 302,527 |  |  | 43,096,891 |  |  | 142.46 |  |  | 44,194,263 |  |  | 146.08 |  |
2027 |  | 200,551 |  |  | 141,645 |  |  | 18,081,953 |  |  | 127.66 |  |  | 18,389,549 |  |  | 129.83 |  |
2028 |  | 579,222 |  |  | 381,419 |  |  | 38,145,055 |  |  | 100.01 |  |  | 39,423,747 |  |  | 103.36 |  |
2029 |  | 655,479 |  |  | 619,115 |  |  | 67,794,951 |  |  | 109.5 |  |  | 73,322,540 |  |  | 118.43 |  |
2030 |  | 700,201 |  |  | 647,594 |  |  | 62,306,926 |  |  | 96.21 |  |  | 67,270,807 |  |  | 103.88 |  |
2031 |  | 249,645 |  |  | 196,016 |  |  | 21,204,162 |  |  | 108.18 |  |  | 22,790,741 |  |  | 116.27 |  |
2032 |  | 104,667 |  |  | 62,457 |  |  | 6,647,927 |  |  | 106.44 |  |  | 6,818,384 |  |  | 109.17 |  |
Thereafter |  | 5,165,454 |  |  | 3,595,569 |  |  | 377,919,784 |  |  | 105.11 |  |  | 451,512,478 |  |  | 125.57 |  |

50

| Q3 2023
Lease expirations - CBD properties (continued) 1, 2, 3

as of September 30, 2023
San Francisco

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 155,811 |  |  | 155,811 |  |  | 14,214,936 |  |  | 91.23 |  |  | 14,220,283 |  |  | 91.27 |  | 4
2024 |  | 517,397 |  |  | 517,397 |  |  | 40,522,254 |  |  | 78.32 |  |  | 39,347,888 |  |  | 76.05 |  |
2025 |  | 328,425 |  |  | 328,425 |  |  | 30,038,546 |  |  | 91.46 |  |  | 30,926,968 |  |  | 94.17 |  |
2026 |  | 501,677 |  |  | 501,677 |  |  | 46,592,262 |  |  | 92.87 |  |  | 48,840,088 |  |  | 97.35 |  |
2027 |  | 435,736 |  |  | 435,736 |  |  | 43,017,743 |  |  | 98.72 |  |  | 46,295,151 |  |  | 106.25 |  |
2028 |  | 540,064 |  |  | 540,064 |  |  | 50,645,488 |  |  | 93.78 |  |  | 56,049,337 |  |  | 103.78 |  |
2029 |  | 290,821 |  |  | 290,821 |  |  | 30,380,618 |  |  | 104.47 |  |  | 34,475,953 |  |  | 118.55 |  |
2030 |  | 281,046 |  |  | 281,046 |  |  | 28,487,756 |  |  | 101.36 |  |  | 32,950,033 |  |  | 117.24 |  |
2031 |  | 795,397 |  |  | 795,397 |  |  | 84,928,239 |  |  | 106.77 |  |  | 94,616,391 |  |  | 118.95 |  |
2032 |  | 248,475 |  |  | 248,475 |  |  | 22,592,609 |  |  | 90.93 |  |  | 28,402,298 |  |  | 114.31 |  |
Thereafter |  | 804,511 |  |  | 804,511 |  |  | 82,611,442 |  |  | 102.69 |  |  | 95,992,224 |  |  | 119.32 |  |

Seattle, WA

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 107,566 |  |  | 95,446 |  |  | 5,314,100 |  |  | 55.68 |  |  | 5,314,100 |  |  | 55.68 |  | 4
2024 |  | 3,340 |  |  | 2,698 |  |  | 165,334 |  |  | 61.28 |  |  | 167,979 |  |  | 62.26 |  |
2025 |  | 32,959 |  |  | 16,876 |  |  | 981,024 |  |  | 58.13 |  |  | 997,265 |  |  | 59.09 |  |
2026 |  | 38,196 |  |  | 34,883 |  |  | 2,082,716 |  |  | 59.71 |  |  | 2,188,559 |  |  | 62.74 |  |
2027 |  | 76,817 |  |  | 73,898 |  |  | 4,349,468 |  |  | 58.86 |  |  | 4,667,274 |  |  | 63.16 |  |
2028 |  | 647,920 |  |  | 311,389 |  |  | 17,144,455 |  |  | 55.06 |  |  | 18,688,850 |  |  | 60.02 |  |
2029 |  | 255,703 |  |  | 234,955 |  |  | 14,355,359 |  |  | 61.10 |  |  | 16,691,573 |  |  | 71.04 |  |
2030 |  | 33,054 |  |  | 33,054 |  |  | 2,004,357 |  |  | 60.64 |  |  | 2,281,026 |  |  | 69.01 |  |
2031 |  | 7,790 |  |  | 4,645 |  |  | 280,438 |  |  | 60.38 |  |  | 329,413 |  |  | 70.92 |  |
2032 |  | 64,737 |  |  | 51,388 |  |  | 3,809,661 |  |  | 74.14 |  |  | 4,591,102 |  |  | 89.34 |  |
Thereafter |  | 20,297 |  |  | 6,834 |  |  | 348,534 |  |  | 51.00 |  |  | 482,453 |  |  | 70.60 |  |

Washington, DC

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 26,771 |  |  | 24,824 |  |  | 1,368,687 |  |  | 55.14 |  |  | 1,368,687 |  |  | 55.14 |  |
2024 |  | 34,143 |  |  | 21,502 |  |  | 1,144,485 |  |  | 53.23 |  |  | 1,160,366 |  |  | 53.97 |  |
2025 |  | 156,643 |  |  | 96,836 |  |  | 8,307,916 |  |  | 85.79 |  |  | 8,604,977 |  |  | 88.86 |  |
2026 |  | 169,935 |  |  | 102,841 |  |  | 9,137,122 |  |  | 88.85 |  |  | 9,583,409 |  |  | 93.19 |  |
2027 |  | 214,894 |  |  | 75,113 |  |  | 5,897,545 |  |  | 78.52 |  |  | 6,286,233 |  |  | 83.69 |  |
2028 |  | 74,058 |  |  | 70,313 |  |  | 5,233,434 |  |  | 74.43 |  |  | 5,732,623 |  |  | 81.53 |  |
2029 |  | 77,939 |  |  | 50,988 |  |  | 3,549,140 |  |  | 69.61 |  |  | 4,041,803 |  |  | 79.27 |  |
2030 |  | 72,929 |  |  | 34,504 |  |  | 2,251,628 |  |  | 65.26 |  |  | 2,766,199 |  |  | 80.17 |  |
2031 |  | 79,622 |  |  | 67,668 |  |  | 3,906,128 |  |  | 57.73 |  |  | 4,435,443 |  |  | 65.55 |  |
2032 |  | 537,435 |  |  | 347,175 |  |  | 26,062,369 |  |  | 75.07 |  |  | 30,183,571 |  |  | 86.94 |  |
Thereafter |  | 857,195 |  |  | 755,293 |  |  | 46,848,450 |  |  | 62.03 |  |  | 62,519,343 |  |  | 82.77 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units and hotel.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
51

| Q3 2023
Lease expirations - Suburban properties 1, 2, 3

as of September 30, 2023
Boston

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 250,061 |  |  | 250,061 |  |  | 16,268,526 |  |  | 65.06 |  |  | 16,268,526 |  |  | 65.06 |  | 4
2024 |  | 345,435 |  |  | 345,435 |  |  | 18,245,746 |  |  | 52.82 |  |  | 18,305,291 |  |  | 52.99 |  |
2025 |  | 664,668 |  |  | 664,668 |  |  | 36,611,321 |  |  | 55.08 |  |  | 36,956,530 |  |  | 55.60 |  |
2026 |  | 251,101 |  |  | 251,101 |  |  | 14,481,431 |  |  | 57.67 |  |  | 15,964,901 |  |  | 63.58 |  |
2027 |  | 269,923 |  |  | 269,923 |  |  | 15,702,527 |  |  | 58.17 |  |  | 16,102,590 |  |  | 59.66 |  |
2028 |  | 253,199 |  |  | 253,199 |  |  | 13,787,387 |  |  | 54.45 |  |  | 14,786,998 |  |  | 58.40 |  |
2029 |  | 459,838 |  |  | 459,838 |  |  | 22,418,057 |  |  | 48.75 |  |  | 25,786,490 |  |  | 56.08 |  |
2030 |  | 180,007 |  |  | 180,007 |  |  | 9,496,653 |  |  | 52.76 |  |  | 10,691,883 |  |  | 59.40 |  |
2031 |  | 534,365 |  |  | 474,025 |  |  | 29,135,854 |  |  | 61.46 |  |  | 32,075,289 |  |  | 67.67 |  |
2032 |  | 153,189 |  |  | 153,189 |  |  | 15,845,700 |  |  | 103.44 |  |  | 18,997,804 |  |  | 124.02 |  |
Thereafter |  | 519,950 |  |  | 519,950 |  |  | 28,323,526 |  |  | 54.47 |  |  | 33,628,256 |  |  | 64.68 |  |

New York

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 876 |  |  | 876 |  |  | 31,514 |  |  | 35.97 |  |  | 31,514 |  |  | 35.97 |  |
2024 |  | 398,241 |  |  | 398,241 |  |  | 14,745,687 |  |  | 37.03 |  |  | 14,773,618 |  |  | 37.10 |  |
2025 |  | 253,268 |  |  | 253,268 |  |  | 10,015,480 |  |  | 39.54 |  |  | 10,179,616 |  |  | 40.19 |  |
2026 |  | 277,931 |  |  | 277,931 |  |  | 11,270,617 |  |  | 40.55 |  |  | 11,643,832 |  |  | 41.89 |  |
2027 |  | 198,055 |  |  | 198,055 |  |  | 7,401,123 |  |  | 37.37 |  |  | 7,690,373 |  |  | 38.83 |  |
2028 |  | 58,124 |  |  | 58,124 |  |  | 2,154,944 |  |  | 37.07 |  |  | 2,291,205 |  |  | 39.42 |  |
2029 |  | 189,801 |  |  | 189,801 |  |  | 7,773,091 |  |  | 40.95 |  |  | 7,793,102 |  |  | 41.06 |  |
2030 |  | 47,174 |  |  | 47,174 |  |  | 1,787,592 |  |  | 37.89 |  |  | 1,932,570 |  |  | 40.97 |  |
2031 |  | 161,276 |  |  | 161,276 |  |  | 6,616,523 |  |  | 41.03 |  |  | 6,953,489 |  |  | 43.12 |  |
2032 |  | 55,310 |  |  | 55,310 |  |  | 2,033,258 |  |  | 36.76 |  |  | 2,254,498 |  |  | 40.76 |  |
Thereafter |  | 126,122 |  |  | 126,122 |  |  | 4,983,975 |  |  | 39.52 |  |  | 5,669,220 |  |  | 44.95 |  |

San Francisco

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 90,822 |  |  | 55,953 |  |  | 3,861,924 |  |  | 69.02 |  |  | 3,866,301 |  |  | 69.10 |  |
2024 |  | 127,223 |  |  | 81,479 |  |  | 3,797,914 |  |  | 46.61 |  |  | 3,866,267 |  |  | 47.45 |  |
2025 |  | 418,316 |  |  | 389,364 |  |  | 25,908,376 |  |  | 66.54 |  |  | 26,929,643 |  |  | 69.16 |  |
2026 |  | 217,781 |  |  | 126,689 |  |  | 9,688,029 |  |  | 76.47 |  |  | 10,085,304 |  |  | 79.61 |  |
2027 |  | 104,269 |  |  | 93,305 |  |  | 6,868,635 |  |  | 73.62 |  |  | 7,585,729 |  |  | 81.30 |  |
2028 |  | 92,964 |  |  | 62,977 |  |  | 3,612,901 |  |  | 57.37 |  |  | 4,103,294 |  |  | 65.16 |  |
2029 |  | 65,763 |  |  | 47,479 |  |  | 1,687,252 |  |  | 35.54 |  |  | 1,964,941 |  |  | 41.39 |  |
2030 |  | 75,755 |  |  | 64,142 |  |  | 3,894,715 |  |  | 60.72 |  |  | 4,670,986 |  |  | 72.82 |  |
2031 |  | 290,714 |  |  | 143,051 |  |  | 10,310,735 |  |  | 72.08 |  |  | 12,692,670 |  |  | 88.73 |  |
2032 |  | 61,035 |  |  | 30,518 |  |  | 1,848,736 |  |  | 60.58 |  |  | 2,125,451 |  |  | 69.65 |  |
Thereafter |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |

52

| Q3 2023
Lease expirations - Suburban properties (continued) 1, 2, 3

as of September 30, 2023
Washington, DC

|  |  |  | BXP’s Share |
|  | Rentable Square Footage Subject to Expiring Leases |  | Rentable Square Footage Subject to Expiring Leases |  | Current Annualized Rental Obligations Under Expiring Leases |  | Annualized Rental Obligations Under Expiring Leases with future step-ups |
Year of Lease |  |  |  |  |
Expiration |  |  |  | $ |  | $/PSF |  | $ |  | $/PSF |
2023 |  | 123,076 |  |  | 123,076 |  |  | 3,037,045 |  |  | 24.68 |  |  | 3,039,756 |  |  | 24.70 |  | 4
2024 |  | 381,977 |  |  | 381,977 |  |  | 19,276,278 |  |  | 50.46 |  |  | 19,574,202 |  |  | 51.24 |  |
2025 |  | 166,049 |  |  | 166,049 |  |  | 8,862,845 |  |  | 53.37 |  |  | 9,193,819 |  |  | 55.37 |  |
2026 |  | 197,045 |  |  | 197,045 |  |  | 10,514,640 |  |  | 53.36 |  |  | 11,101,442 |  |  | 56.34 |  |
2027 |  | 386,938 |  |  | 386,938 |  |  | 21,437,245 |  |  | 55.40 |  |  | 23,130,678 |  |  | 59.78 |  |
2028 |  | 115,051 |  |  | 115,051 |  |  | 6,639,022 |  |  | 57.71 |  |  | 7,132,802 |  |  | 62.00 |  |
2029 |  | 594,093 |  |  | 594,093 |  |  | 32,213,809 |  |  | 54.22 |  |  | 36,558,011 |  |  | 61.54 |  |
2030 |  | 110,101 |  |  | 110,101 |  |  | 6,356,737 |  |  | 57.74 |  |  | 7,174,599 |  |  | 65.16 |  |
2031 |  | 93,955 |  |  | 93,955 |  |  | 5,214,834 |  |  | 55.50 |  |  | 6,112,287 |  |  | 65.06 |  |
2032 |  | 496,516 |  |  | 496,516 |  |  | 31,390,377 |  |  | 63.22 |  |  | 37,165,012 |  |  | 74.85 |  |
Thereafter |  | 2,871,885 |  |  | 2,504,099 |  |  | 129,365,797 |  |  | 51.66 |  |  | 160,419,261 |  |  | 64.06 |  |

_____________
1 For the Company’s definitions and related disclosures, see the Definitions section of this Supplemental package starting on page 55.
2 Includes partially placed in-service leased space. Does not include residential units and hotel.
3 Does not include data for leases expiring in a particular year when leases for the same space have already been signed with replacement clients with future commencement dates. In those cases, the data is included in the year in which the future lease expires.
4 Includes square feet expiring on the last day of the current quarter.
53

| Q3 2023
Research coverage

With the exception of Green Street Advisors, an independent research firm, the equity analysts listed below are those analysts that, according to Thomson Reuters Corporation, have published research material on the Company and are listed as covering the Company. Please note that any opinions, estimates or forecasts regarding the Company’s performance made by the analysts listed below do not represent the opinions, estimates or forecasts of the Company or its management. The Company does not by its reference below imply its endorsement of or concurrence with any information, conclusions or recommendations made by any of such analysts.

Equity Research Coverage |  |  |
Argus Research Company | Marie Ferguson |  | 646.747.5447
Bank of America Merrill Lynch | Jeffrey Spector / Camille Bonnel |  | 646.855.1363 / 416.369.2140
Barclays | Anthony Powell |  | 212.526.8768
BMO Capital | John Kim |  | 212.885.4115
BTIG | Tom Catherwood |  | 212.738.6140
Citi | Nicholas Joseph / Michael Griffin |  | 212.816.1909 / 212.816.5871
Compass Point Research & Trading, LLC | Floris van Dijkum |  | 646.757.2621
Evercore ISI | Steve Sakwa |  | 212.446.9462
Goldman Sachs | Caitlin Burrows |  | 212.902.4736
Green Street Advisors | Dylan Burzinski |  | 949.640.8780
Jefferies & Co. | Jonathan Peterson |  | 212.336.7076
J.P. Morgan Securities | Anthony Paolone |  | 212.622.6682
Keybanc Capital Market | Todd Thomas/Upal Rana |  | 917.368.2286 / 917.368.2316
Mizuho Securities | Vikram Malhotra |  | 212.209.9300
Morgan Stanley | Ronald Kamdem |  | 212.296.8319
Piper Sandler Companies | Alexander Goldfarb |  | 212.466.7937
Scotiabank GBM | Nicholas Yulico |  | 212.225.6904
Truist Securities | Michael Lewis |  | 212.319.5659
UBS US Equity Research | Michael Goldsmith |  | 212.713.2951
Wedbush | Richard Anderson |  | 212.938.9949
Wells Fargo Securities | Blaine Heck |  | 443.263.6529
Wolfe Research | Andrew Rosivach |  | 646.582.9250

Debt Research Coverage |  |  |
Barclays | Srinjoy Banerjee |  | 212.526.3521
J.P. Morgan Securities | Mark Streeter |  | 212.834.5086
US Bank | Bill Stafford |  | 877.558.2605
Wells Fargo | Kevin McClure |  | 704.410.1100

Rating Agencies |  |  |
Moody’s Investors Service | Ranjini Venkatesan |  | 212.553.3828
Standard & Poor’s | Michael Souers |  | 212.438.2508

54

| Q3 2023
Definitions

This section contains definitions of certain non-GAAP financial measures and other terms that the Company uses in this Supplemental report and, if applicable, the reasons why management believes these non-GAAP financial measures provide useful information to investors about the Company’s financial condition and results of operations and the other purposes for which management uses the measures. Additional detail can be found in the Company’s most recent annual report on Form 10-K and quarterly report on Form 10-Q, as well as other documents the Company files or furnishes to the SEC from time to time.
The Company also presents “BXP’s Share” of certain of these measures, which are non-GAAP financial measures that are calculated as the consolidated amount calculated in accordance with GAAP, plus the Company’s share of the amount from the Company’s unconsolidated joint ventures (calculated based upon the Company’s percentage ownership interest and, in some cases, after priority allocations), minus the Company’s partners’ share of the amount from the Company’s consolidated joint ventures (calculated based upon the partners’ percentage ownership interests and, in some cases, after income allocation to private REIT shareholders and their share of fees due to the Company). Management believes that presenting “BXP’s Share” of these measures provides useful information to investors regarding the Company’s financial condition and/or results of operations because the Company has several significant joint ventures and, in some cases, the Company exercises significant influence over, but does not control, the joint venture, in which case GAAP requires that the Company account for the joint venture entity using the equity method of accounting and the Company does not consolidate it for financial reporting purposes. In other cases, GAAP requires that the Company consolidate the venture even though the Company’s partner(s) owns a significant percentage interest. As a result, management believes that presenting BXP’s Share of various financial measures in this manner can help investors better understand the Company’s financial condition and/or results of operations after taking into account its true economic interest in these joint ventures. The Company cautions investors that the ownership percentages used in calculating “BXP’s Share” of these measures may not completely and accurately depict all of the legal and economic implications of holding an interest in a consolidated or unconsolidated joint venture. For example, in addition to partners’ interests in profits and capital, venture agreements vary in the allocation of rights regarding decision making (both routine and major decisions), distributions, transferability of interests, financings and guarantees, liquidations and other matters. As a result, presentations of “BXP’s Share” of a financial measure should not be considered a substitute for, and should only be considered together with and as a supplement to, the Company’s financial information presented in accordance with GAAP. Unless noted otherwise, reconciliations of “BXP’s Share” of these financial measures can be found in the Reconciliations section of this Supplemental package starting on page 59.
The Company may also present "BXP's Share" of certain operating metrics, such as occupancy and leased percentages based upon square footage. 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).
Annualized Rental Obligations
Annualized Rental Obligations is defined as monthly Rental Obligations, as of the last day of the reporting period, multiplied by twelve (12).
Average Economic Occupancy
Average Economic Occupancy is defined as (1) total possible revenue less vacancy loss divided by (2) total possible revenue, expressed as a percentage. Total possible revenue is determined by valuing average occupied units at contract rates and average vacant units at Market Rents. Vacancy loss is determined by valuing vacant units at current Market Rents. By measuring vacant units at their Market Rents, Average Economic Occupancy takes into account the fact that units of different sizes and locations within a residential property have different economic impacts on a residential property’s total possible gross revenue.
Average Monthly Rental Rates
Average Monthly Rental Rates are calculated by the Company as the average of the quotients obtained by dividing (A) rental revenue as determined in accordance with GAAP by (B) the number of occupied units for each month within the applicable fiscal period.
Average Physical Occupancy
Average Physical Occupancy is defined as (1) the average number of occupied units divided by (2) the total number of units, expressed as a percentage.
Debt to Market Capitalization Ratio
Consolidated Debt to Consolidated Market Capitalization Ratio is a measure of leverage commonly used by analysts in the REIT sector that equals the quotient of (A) the Company’s Consolidated Debt divided by (B) the Company’s Consolidated Market Capitalization, presented as a percentage. Consolidated Market Capitalization is the sum of (x) the Company’s Consolidated Debt plus (y) the market value of the Company’s outstanding equity securities calculated using the closing price per share of common stock of the Company, as reported by the New York Stock Exchange, multiplied by the sum of (1) outstanding shares of common stock of the Company, (2) outstanding common units of limited partnership interest in Boston Properties Limited Partnership (excluding common units held by the Company), (3) common units issuable upon conversion of all outstanding LTIP Units, assuming all conditions have been met for the conversion of the LTIP Units, (4) common units issuable upon conversion of 2012 OPP Units that were issued in the form of LTIP Units, (5) common units issuable upon conversion of 2013 MYLTIP Units that were issued in the form of LTIP Units, (6) common units issuable upon conversion of 2014 MYLTIP Units that were issued in the form of LTIP Units, (7) common units issuable upon conversion of 2015 MYLTIP Units that were issued in the form of LTIP Units, (8) common units issuable upon conversion of 2016 MYLTIP Units that were issued in the form of LTIP Units, (9) on and after February 6, 2020, which was the end of the performance period for 2017 MYLTIP Units and thus the date earned, common units issuable upon conversion of 2017 MYLTIP Units that were issued in the form of LTIP Units, (10) on and after February 5, 2021, which was the end of the performance period for 2018 MYLTIP Units and thus the date earned, common units issuable upon conversion of 2018 MYLTIP Units that were issued in the form of LTIP Units, (11) on and after February 4, 2022, which was the end of the performance period for 2019 MYLTIP Units and thus the date earned, common units issuable upon conversion of 2019 MYLTIP Units and (12) on and after February 3, 2023, which was the end of the performance period for 2020 MYLTIP Units and thus the date earned, common units issuable upon conversion of 2020 MYLTIP Units that were issued in the form of LTIP Units. The calculation of Consolidated Market Capitalization does not include LTIP Units issued in the form of MYLTIP Awards unless and until certain performance thresholds are achieved and they are earned. Because their three-year performance periods have not yet ended, 2021, 2022 and 2023 MYLTIP Units are not included.
The Company also presents BXP’s Share of Market Capitalization, which is calculated in a similar manner, except that BXP’s Share of Debt is utilized instead of the Company’s Consolidated Debt in both the numerator and the denominator. The Company presents these ratios because its degree of leverage could affect its ability to obtain additional financing for working capital, capital expenditures, acquisitions, development or other general corporate purposes and because different investors and lenders consider one or both of these ratios. Investors should understand that these ratios are, in part, a function of the market price of the common stock of the Company, and as such will fluctuate with changes in such price and do not necessarily reflect the Company’s capacity to incur additional debt to finance its activities or its ability to manage its existing debt obligations. However, for a company like Boston Properties, Inc., whose assets are primarily income-producing real estate, these ratios may provide investors with an alternate indication of leverage, so long as they are
55

| Q3 2023
Definitions (continued)

evaluated along with the ratio of indebtedness to other measures of asset value used by financial analysts and other financial ratios, as well as the various components of the Company’s outstanding indebtedness.
Earnings Before Interest, Taxes, Depreciation and Amortization for Real Estate (EBITDA re)
Pursuant to the definition of Earnings Before Interest, Taxes, Depreciation and Amortization for Real Estate adopted by the Board of Governors of the National Association of Real Estate Investment Trusts (“Nareit”), the Company calculates EBITDA re as net income (loss) attributable to Boston Properties, Inc, the most directly comparable GAAP financial measure, plus net (income) loss attributable to noncontrolling interests, interest expense, losses (gains) from early extinguishments of debt, depreciation and amortization expense, impairment loss and adjustments to reflect the Company’s share of EBITDA re from unconsolidated joint ventures less gains (losses) on sales of real estate and sales-type leases. EBITDA re is a non-GAAP financial measure. The Company uses EBITDA re internally as a performance measure and believes EBITDA re provides useful information to investors regarding its financial condition and results of operations at the corporate level because, when compared across periods, EBITDA re reflects the impact on operations from trends in occupancy rates, rental rates, operating costs, general and administrative expenses and acquisition and development activities on an unleveraged basis, providing perspective not immediately apparent from net income (loss) attributable to Boston Properties, Inc.
In some cases the Company also presents (A) BXP’s Share of EBITDA re – cash, which is BXP’s Share of EBITDA re after eliminating the effects of straight-line rent (excluding the impact related to deferred revenue related to improvements to long-lived assets paid for by a client), fair value lease revenue, amortization and accretion of sales type lease receivable, non-cash termination income adjustment (fair value lease amounts) and non-cash gains (losses) from early extinguishment of debt and adding straight-line ground rent expense (excluding prepaid ground rent expense), stock-based compensation expense and lease transaction costs that qualify as rent inducements, and (B) Annualized EBITDA re, which is EBITDA re for the applicable fiscal quarter ended multiplied by four (4). Presenting BXP’s Share of EBITDA re – cash allows investors to compare EBITDA re across periods without taking into account the effect of certain non-cash rental revenues, ground rent expense and stock based compensation expense. Similar to depreciation and amortization, because of historical cost accounting, fair value lease revenue may distort operating performance measures at the property level. Additionally, presenting EBITDA re excluding the impact of straight-line rent provides investors with an alternative view of operating performance at the property level that more closely reflects rental revenue generated at the property level without regard to future contractual increases in rental rates. In addition, the Company’s management believes that the presentation of Annualized EBITDA re provides useful information to investors regarding the Company’s results of operations because it enables investors to more easily compare quarterly EBITDA re to EBITDA re from full fiscal years.
The Company’s computation of EBITDA re may not be comparable to EBITDA re reported by other REITs or real estate companies that do not define the term in accordance with the current Nareit definition or that interpret the current Nareit definition differently. The Company believes that in order to facilitate a clear understanding of its operating results, EBITDA re should be examined in conjunction with net income (loss) attributable to Boston Properties, Inc. as presented in the Company’s consolidated financial statements. EBITDA re should not be considered a substitute to net income (loss) attributable to Boston Properties, Inc. in accordance with GAAP or any other GAAP financial measures and should only be considered together with and as a supplement to the Company’s financial information prepared in accordance with GAAP.
Fixed Charge Coverage Ratio
Fixed Charge Coverage Ratio equals BXP’s Share of EBITDA re – cash divided by Total Fixed Charges. BXP’s Share of EBITDA re – cash is a non-GAAP financial measure equal to BXP’s Share of EBITDA re after eliminating the effects of straight-line rent (excluding the impact related to deferred revenue related to improvements to long-lived assets paid for by a client), fair value lease revenue, amortization and accretion related to sales type lease receivable, non-cash termination income adjustment (fair value lease amounts) and non-cash gains (losses) from early extinguishment of debt and adding straight-line ground rent expense, stock-based compensation expense and lease transaction costs that qualify as rent inducements. Total Fixed Charges is also a non-GAAP financial measure equal to the sum of BXP’s Share of interest expense, capitalized interest, maintenance capital expenditures, hotel improvements, equipment upgrades and replacements and preferred dividends/distributions less hedge amortization and amortization of financing costs. The Company believes that the presentation of its Fixed Charge Coverage Ratio provides investors with useful information about the Company’s financial performance as it relates to overall financial flexibility and balance sheet management. Furthermore, the Company believes that the Fixed Charge Coverage Ratio is frequently used by analysts, rating agencies and other interested parties in the evaluation of the Company’s performance as a REIT and, as a result, by presenting the Fixed Charge Coverage Ratio the Company assists these parties in their evaluations. The Company’s calculation of its Fixed Charge Coverage Ratio may not be comparable to the ratios reported by other REITs or real estate companies that define the term differently and should only be considered together with and as a supplement to the Company’s financial information prepared in accordance with GAAP. For clarification purposes, this ratio does not include gains (losses) from early extinguishments of debt.
Funds Available for Distribution (FAD) and FAD Payout Ratio
In addition to FFO, which is defined on the following page, the Company presents Funds Available for Distribution to common shareholders and common unitholders (FAD), which is a non-GAAP financial measure that is calculated by (1) adding to FFO lease transaction costs that qualify as rent inducements, non-real estate depreciation, non-cash losses (gains) from early extinguishments of debt, stock-based compensation expense, partners’ share of consolidated and unconsolidated joint venture 2nd generation tenant improvement and leasing commissions (included in the period in which the lease commences) and unearned portion of capitalized fees, (2) eliminating the effects of straight-line rent, straight-line ground rent expense adjustment (excluding prepaid ground rent expense), hedge amortization, fair value interest adjustment, fair value lease revenue and amortization and accretion related to sales type lease receivable, and (3) subtracting maintenance capital expenditures, hotel improvements, equipment upgrades and replacements, 2nd generation tenant improvement and leasing commissions (included in the period in which the lease commences), non-cash termination income adjustment (fair value lease amounts) and impairments of non-depreciable real estate. The Company believes that the presentation of FAD provides useful information to investors regarding the Company’s results of operations because FAD provides supplemental information regarding the Company’s operating performance that would not otherwise be available and may be useful to investors in assessing the Company’s operating performance. Additionally, although the Company does not consider FAD to be a liquidity measure, as it does not make adjustments to reflect changes in working capital or the actual timing of the payment of income or expense items that are accrued in the period, the Company believes that FAD may provide investors with useful supplemental information regarding the Company’s ability to generate cash from its operating performance and the impact of the Company’s operating performance on its ability to make distributions to its shareholders. Furthermore, the Company believes that FAD is frequently used by analysts, investors and other interested parties in the evaluation of its performance as a REIT and, as a result, by presenting FAD the Company is assisting these parties in their evaluation. FAD should not be considered as a substitute for net income (loss) attributable to Boston Properties, Inc.’s co determined in accordance with GAAP or any other GAAP financial measures and should only be considered together with and as a supplement to the Company’s financial information prepared in accordance with GAAP.
FAD Payout Ratio is defined as distributions to common shareholders and unitholders (excluding any special distributions) divided by FAD.
56

| Q3 2023
Definitions (continued)

Funds from Operations (FFO)
Pursuant to the revised definition of Funds from Operations adopted by the Board of Governors of Nareit, the Company calculates Funds from Operations, or “FFO,” by adjusting net income (loss) attributable to Boston Properties, Inc. (computed in accordance with GAAP) for gains (or losses) from sales of properties or a change in control, impairment losses on depreciable real estate consolidated on the Company’s balance sheet, impairment losses on its investments in unconsolidated joint ventures driven by a measurable decrease in the fair value of depreciable real estate held by the unconsolidated joint ventures and real estate-related depreciation and amortization. FFO is a non-GAAP financial measure, but the Company believes the presentation of FFO, combined with the presentation of required GAAP financial measures, has improved the understanding of operating results of REITs among the investing public and has helped make comparisons of REIT operating results more meaningful. Management generally considers FFO and FFO per share to be useful measures for understanding and comparing the Company’s operating results because, by excluding gains and losses related to sales or a change in control of previously depreciated operating real estate assets, impairment losses and real estate asset depreciation and amortization (which can differ across owners of similar assets in similar condition based on historical cost accounting and useful life estimates), FFO and FFO per share can help investors compare the operating performance of a company’s real estate across reporting periods and to the operating performance of other companies.
The Company’s computation of FFO may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current Nareit definition or that interpret the current Nareit definition differently. In order to facilitate a clear understanding of the Company’s operating results, FFO should be examined in conjunction with net income (loss) attributable to Boston Properties, Inc. as presented in the Company’s consolidated financial statements. FFO should not be considered as a substitute for net income (loss) attributable to Boston Properties, Inc. (determined in accordance with GAAP) or any other GAAP financial measures and should only be considered together with and as a supplement to the Company’s financial information prepared in accordance with GAAP.
In-Service Properties
The Company treats a property as being “in-service” upon the earlier of (1) lease-up and completion of tenant improvements or (2) one year after cessation of major construction activity as determined under GAAP. The determination as to when an entire property should be treated as “in-service” involves a degree of judgment and is made by management based on the relevant facts and circumstances of the particular property. For portfolio operating and occupancy statistics, the Company specifies a single date for treating a property as “in-service,” which is generally later than the date the property is partially placed in-service under GAAP. Under GAAP, a property may be placed in-service in stages as construction is completed and the property is held available for occupancy. In addition, under GAAP, when a portion of a property has been substantially completed and either occupied or held available for occupancy, the Company ceases capitalizing costs on that portion, even though it may not treat the property as being “in-service,” and continues to capitalize only those costs associated with the portion still under construction. In-service properties include properties held by the Company’s unconsolidated joint ventures. A property will no longer be considered “in-service” when the occupied percentage is below 50% and the Company is no longer actively leasing the property in anticipation of a future development/redevelopment.
Interest Coverage Ratio
Interest Coverage Ratio, calculated including and excluding capitalized interest, is a non-GAAP financial measure equal to BXP’s Share of EBITDA re – cash divided by Adjusted interest expense. BXP’s Share of EBITDA re – cash is a non-GAAP financial measure equal to BXP’s Share of EBITDA re after eliminating the effects of straight-line rent (excluding the impact related to deferred revenue related to improvements to long-lived assets paid for by a client), fair value lease revenue, amortization and accretion related to sales type lease receivable, non-cash termination income adjustment (fair value lease amounts) and non-cash gains (losses) from early extinguishment of debt and adding straight-line ground rent expense (excluding prepaid ground rent expense), stock-based compensation expense and lease transaction costs that qualify as rent inducements. Adjusted interest expense excluding capitalized interest is equal to BXP’s Share of interest expense less (1) BXP’s Share of hedge amortization, (2) BXP’s Share of fair value interest adjustment and (3) BXP’s Share of amortization of financing costs. Adjusted interest expense including capitalized interest is calculated in the same manner but adds back BXP’s Share of capitalized interest. The Company believes that the presentation of its Interest Coverage Ratio provides useful information about the Company’s financial condition because it provides investors additional information on the Company’s ability to meet its debt obligations and incur additional indebtedness. In addition, by analyzing interest coverage ratios over a period of time, trends may emerge that provide investors a better sense of whether a company’s financial condition is improving or declining. The ratios may also be used to compare the financial condition of different companies, which can help when making an investment decision. The Company presents its Interest Coverage Ratio in two ways - including capitalized interest and excluding capitalized interest. GAAP requires the capitalization of interest expense during development. Therefore, for a company like Boston Properties, Inc. that is an active developer of real estate, presenting the Interest Coverage Ratio (excluding capitalized interest) provides an alternative measure of financial condition that may be more indicative of the Company’s ability to meet its interest expense obligations and therefore its overall financial condition. For clarification purposes, this ratio does not include gains (losses) from early extinguishments of debt.
Market Rents
Market Rents used by the Company in calculating Average Economic Occupancy are based on the current market rates set by the managers of the Company’s residential properties based on their experience in renting their residential property’s units and publicly available market data. Trends in market rents for a region as reported by others could therefore vary materially. Market Rents for a period are based on the average Market Rents during that period and do not reflect any impact for cash concessions.
Net Debt
Net Debt is equal to (A) the Company’s consolidated debt plus special dividends payable (if any) less (B) cash and cash equivalents and cash held in escrow for potential Section 1031 like kind exchange(s). The Company believes that the presentation of Net Debt provides useful information to investors because the Company reviews Net Debt as part of the management of its overall financial flexibility, capital structure and leverage. In particular, Net Debt is an important component of the Company’s ratio of BXP’s Share of Net Debt to BXP’s Share of EBITDA re. BXP’s Share of Net Debt is calculated in a similar manner to Net Debt, except that (1) BXP’s Share of Debt is utilized instead of the Company’s consolidated debt after eliminating BXP’s Share of the related party note receivable and (2) BXP’s Share of cash is utilized instead of consolidated cash. The Company believes BXP’s Share of Net Debt to BXP’s Share of EBITDA re is useful to investors because it provides an alternative measure of the Company’s financial flexibility, capital structure and leverage based on its percentage ownership interest in all of its assets. Furthermore, certain debt rating agencies, creditors and credit analysts monitor the Company’s Net Debt as part of their assessments of its business. The Company may utilize a considerable portion of its cash and cash equivalents at any given time for purposes other than debt reduction. In addition, cash and cash equivalents and cash held in escrow for potential Section 1031 like kind exchange(s) may not be solely controlled by the Company. The deduction of these items from consolidated debt in the calculation of Net Debt therefore should not be understood to mean that these items are available exclusively for debt reduction at any given time.
57

| Q3 2023
Definitions (continued)

Net Operating Income/(Loss) (NOI)
Net operating income/(loss) (NOI) is a non-GAAP financial measure equal to net income (loss) attributable to Boston Properties, Inc., the most directly comparable GAAP financial measure, plus (1) net (income) loss attributable to noncontrolling interests, corporate general and administrative expense, payroll and related costs from management services contracts, transaction costs, depreciation and amortization expense, losses from early extinguishments of debt, interest expense, less (2) development and management services revenue, direct reimbursements of payroll and related costs from management services contracts, income (loss) from unconsolidated joint ventures, gains (losses) on sales of real estate, gains (losses) from investments in securities, unrealized gain (loss) on non-real estate investment, interest and other income (loss), gain on sales-type lease and other income - assignment fee. In some cases, the Company also presents (1) NOI – cash, which is NOI after eliminating the effects of straight-line rent (excluding the impact related to deferred revenue related to improvements to long-lived assets paid for by a client), fair value lease revenue, amortization and accretion related to sales type lease, straight-line ground rent expense adjustment (excluding prepaid ground rent), prepaid ground rent expense and lease transaction costs that qualify as rent inducements in accordance with GAAP, and (2) NOI and NOI – cash, in each case excluding termination income.
The Company uses these measures internally as performance measures and believes they provide useful information to investors regarding the Company’s results of operations and financial condition because, when compared across periods, they reflect the impact on operations from trends in occupancy rates, rental rates, operating costs and acquisition and development activity on an unleveraged basis, providing perspective not immediately apparent from net income. For example, interest expense is not necessarily linked to the operating performance of a real estate asset and is often incurred at the corporate level as opposed to the property level. Similarly, interest expense may be incurred at the property level even though the financing proceeds may be used at the corporate level (e.g., used for other investment activity). In addition, depreciation and amortization expense because of historical cost accounting and useful life estimates, may distort operating performance measures at the property level. Presenting NOI – cash allows investors to compare NOI performance across periods without taking into account the effect of certain non-cash rental revenues, amortization and accretion related to sales type lease receivable and ground rent expenses. Similar to depreciation and amortization expense, fair value lease revenues, because of historical cost accounting, may distort operating performance measures at the property level. Additionally, presenting NOI excluding the impact of the straight-lining of rent and amortization and accretion related to sale type lease receivable provides investors with an alternative view of operating performance at the property level that more closely reflects net cash generated at the property level on an unleveraged basis. Presenting NOI measures that exclude termination income provides investors with additional information regarding operating performance at a property level that allows them to compare operating performance between periods without taking into account termination income, which can distort the results for any given period because they generally represent multiple months or years of a client’s rental obligations that are paid in a lump sum in connection with a negotiated early termination of the client’s lease and are not reflective of the core ongoing operating performance of the Company’s properties.
Rental Obligations
Rental Obligations is defined as the contractual base rents (but excluding percentage rent) and budgeted reimbursements from clients under existing leases. These amounts exclude rent abatements.
Rental Revenue
Rental Revenue is equal to Total revenue, the most directly comparable GAAP financial measure, less development and management services revenue and direct reimbursements of payroll and related costs from management services contracts. The Company uses Rental Revenue internally as a performance measure and in calculating other non-GAAP financial measures (e.g., NOI), which provides investors with information regarding our performance that is not immediately apparent from the comparable non-GAAP measures and allows investors to compare operating performance between periods. The Company also presents Rental Revenue (excluding termination income) because termination income can distort the results for any given period because it generally represents multiple months or years of a client’s rental obligations that are paid in a lump sum in connection with a negotiated early termination of the client’s lease and does not reflect the core ongoing operating performance of the Company’s properties.
Same Properties
In the Company’s analysis of NOI, particularly to make comparisons of NOI between periods meaningful, it is important to provide information for properties that were in-service and owned by the Company throughout each period presented. The Company refers to properties acquired or placed in-service prior to the beginning of the earliest period presented and owned by the Company through the end of the latest period presented as “Same Properties.” “Same Properties” therefore exclude properties placed in-service, acquired, repositioned or in development or redevelopment after the beginning of the earliest period presented or disposed of prior to the end of the latest period presented. Accordingly, it takes at least one year and one quarter after a property is acquired or treated as “in-service” for that property to be included in “Same Properties.” Pages 21 - 24 indicate by footnote the “In-Service Properties” that are not included in “Same Properties.”
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| Q3 2023
Reconciliations

(unaudited and in thousands)

BXP’s Share of select items |  |  |
| Three Months Ended
| 30-Sep-23 |  | 30-Jun-23
Revenue | $ | 824,283 |  |  | $ | 817,153 |
Partners’ share of revenue from consolidated joint ventures (JVs) | (83,203) |  |  | (80,383) |
BXP’s share of revenue from unconsolidated JVs | 67,723 |  |  | 68,417 |
BXP’s Share of revenue | $ | 808,803 |  |  | $ | 805,187 |
Straight-line rent | $ | 19,139 |  |  | $ | 26,493 |
Partners’ share of straight-line rent from consolidated JVs | (5,994) |  |  | (4,641) |
BXP’s share of straight-line rent from unconsolidated JVs | 3,502 |  |  | 3,075 |
BXP’s Share of straight-line rent | $ | 16,647 |  |  | $ | 24,927 |
Fair value lease revenue 2 | $ | 2,981 |  |  | $ | 5,850 |
Partners’ share of fair value lease revenue from consolidated JVs 2 | (137) |  |  | (140) |
BXP’s share of fair value lease revenue from unconsolidated JVs 2 | 1,063 |  |  | 1,066 |
BXP’s Share of fair value lease revenue 2 | $ | 3,907 |  |  | $ | 6,776 |
Lease termination income | $ | 2,564 |  |  | $ | (164) |
Partners’ share of termination income from consolidated JVs | (129) |  |  | 276 |
BXP’s share of termination income from unconsolidated JVs | 500 |  |  | 3,113 |
BXP’s Share of termination income | $ | 2,935 |  |  | $ | 3,225 |
Non-cash termination income adjustment (fair value lease amounts) | $ | — |  |  | $ | — |
Partners’ share of non-cash termination income adjustment (fair value lease amounts) from consolidated JVs | — |  |  | — |
BXP’s share of non-cash termination income adjustment (fair value lease amounts) from unconsolidated JVs | — |  |  | — |
BXP’s Share of non-cash termination income adjustment (fair value lease amounts) | $ | — |  |  | $ | — |
Parking and other revenue | $ | 29,649 |  |  | $ | 26,054 |
Partners’ share of parking and other revenue from consolidated JVs | (1,080) |  |  | (299) |
BXP’s share of parking and other revenue from unconsolidated JVs | 3,465 |  |  | 3,077 |
BXP’s Share of parking and other revenue | $ | 32,034 |  |  | $ | 28,832 |
Hedge amortization, net of costs | $ | 1,590 |  |  | $ | 1,590 |
Partners’ share of hedge amortization, net of costs from consolidated JVs | (144) |  |  | (144) |
BXP’s share of hedge amortization, net of costs from unconsolidated JVs | (1,919) |  |  | 304 |
BXP’s Share of hedge amortization, net of costs | $ | (473) |  |  | $ | 1,750 |
Straight-line ground rent expense adjustment | $ | 713 |  |  | $ | 669 |
Partners’ share of straight-line ground rent expense adjustment from consolidated JVs | — |  |  | — |
BXP’s share of straight-line ground rent expense adjustment from unconsolidated JVs | 141 |  |  | 142 |
BXP’s Share of straight-line ground rent expense adjustment | $ | 854 |  |  | $ | 811 |
Depreciation and amortization | $ | 207,435 |  |  | $ | 202,577 |
Noncontrolling interests in property partnerships’ share of depreciation and amortization | (18,174) |  |  | (17,858) |
BXP’s share of depreciation and amortization from unconsolidated JVs | 25,666 |  |  | 25,756 |
BXP’s Share of depreciation and amortization | $ | 214,927 |  |  | $ | 210,475 |
Lease transaction costs that qualify as rent inducements 3 | $ | (5,943) |  |  | $ | 3,402 |
Partners’ share of lease transaction costs that qualify as rent inducements from consolidated JVs 3 | (303) |  |  | (279) |
BXP’s share of lease transaction costs that qualify as rent inducements from unconsolidated JVs 3 | 283 |  |  | 108 |
BXP’s Share of lease transaction costs that qualify as rent inducements 3 | $ | (5,963) |  |  | $ | 3,231 |
2nd generation tenant improvements and leasing commissions | $ | 104,872 |  |  | $ | 49,500 |
Partners’ share of 2nd generation tenant improvements and leasing commissions from consolidated JVs | (25,715) |  |  | (6,546) |
BXP’s share of 2nd generation tenant improvements and leasing commissions from unconsolidated JVs | 775 |  |  | 1,038 |
BXP’s Share of 2nd generation tenant improvements and leasing commissions | $ | 79,932 |  |  | $ | 43,992 |

59

| Q3 2023
Reconciliations (continued)

Maintenance capital expenditures 4 | $ | 19,599 |  |  | $ | 29,015 |
Partners’ share of maintenance capital expenditures from consolidated JVs 4 | (2,695) |  |  | (5,221) |
BXP’s share of maintenance capital expenditures from unconsolidated JVs 4 | 91 |  |  | 338 |
BXP’s Share of maintenance capital expenditures 4 | $ | 16,995 |  |  | $ | 24,132 |
Interest expense | $ | 147,812 |  |  | $ | 142,473 |
Partners’ share of interest expense from consolidated JVs | (12,019) |  |  | (11,871) |
BXP’s share of interest expense from unconsolidated JVs | 25,245 |  |  | 24,402 |
BXP’s Share of interest expense | $ | 161,038 |  |  | $ | 155,004 |
Capitalized interest | $ | 9,676 |  |  | $ | 10,564 |
Partners’ share of capitalized interest from consolidated JVs | (16) |  |  | (41) |
BXP’s share of capitalized interest from unconsolidated JVs | 1,922 |  |  | 1,864 |
BXP’s Share of capitalized interest | $ | 11,582 |  |  | $ | 12,387 |
Amortization of financing costs | $ | 5,121 |  |  | $ | 5,096 |
Partners’ share of amortization of financing costs from consolidated JVs | (498) |  |  | (498) |
BXP’s share of amortization of financing costs from unconsolidated JVs | 641 |  |  | 676 |
BXP’s Share of amortization of financing costs | $ | 5,264 |  |  | $ | 5,274 |
Fair value interest adjustment | $ | — |  |  | $ | — |
Partners’ share of fair value of interest adjustment from consolidated JVs | — |  |  | — |
BXP’s share off fair value interest adjustment from unconsolidated JVs | 499 |  |  | 499 |
BXP’s Share of fair value interest adjustment | $ | 499 |  |  | $ | 499 |

_____________
1 Represents the reinstatement of accrued rent balances related to clients that the Company determined are now probable of collection.
2 Represents the net adjustment for above- and below-market leases that are being amortized over the terms of the respective leases in place at the property acquisition dates.
3 Consists of lease transaction costs that qualify as rent inducements in accordance with GAAP. Lease transaction costs are generally included in 2nd generation tenant improvements and leasing commissions in the period the lease commences.
4 Maintenance capital expenditures do not include planned capital expenditures related to acquisitions and repositioning capital expenditures.
60

| Q3 2023
Reconciliations (continued)

for the three months ended September 30, 2023
(unaudited and dollars in thousands)

|  |  |  | Norges Joint Ventures |  |  |
|  |  |  | Times Square Tower |  |  |
|  |  |  | 601 Lexington Avenue / One Five Nine East 53rd Street |  |  |
CONSOLIDATED JOINT VENTURES |  |  |  | 100 Federal Street |  |  |
| 767 Fifth Avenue |  | Atlantic Wharf Office |  | Total Consolidated |
| (The GM Building) |  | 343 Madison Avenue 1 |  | Joint Ventures |
Revenue |  |  |  |  |  |  |
Lease 2 |  | $ | 76,788 |  |  | $ | 100,329 |  |  | $ | 177,117 |  |
Straight-line rent |  | 5,379 |  |  | 8,537 |  |  | 13,916 |  |
Fair value lease revenue |  | 327 |  |  | 14 |  |  | 341 |  |
Termination income |  | — |  |  | 287 |  |  | 287 |  |
Total lease revenue |  | 82,494 |  |  | 109,167 |  |  | 191,661 |  |
Parking and other |  | — |  |  | 2,400 |  |  | 2,400 |  |
Total rental revenue 3 |  | 82,494 |  |  | 111,567 |  |  | 194,061 |  |
Expenses |  |  |  |  |  |  |
Operating |  | 33,347 |  |  | 40,449 |  |  | 73,796 |  |
Net Operating Income (NOI) |  | 49,147 |  |  | 71,118 |  |  | 120,265 |  |
Other income (expense) |  |  |  |  |  |  |
Development and management services revenue |  | — |  |  | — |  |  | — |  |
Loss from investment in securities |  | — |  |  | (3) |  |  | (3) |  |
Interest and other income |  | 1,092 |  |  | 1,651 |  |  | 2,743 |  |
Interest expense |  | (21,355) |  |  | (7,736) |  |  | (29,091) |  |
Depreciation and amortization expense |  | (17,244) |  |  | (23,661) |  |  | (40,905) |  |
General and administrative expense |  | (76) |  |  | (99) |  |  | (175) |  |
Total other income (expense) |  | (37,583) |  |  | (29,848) |  |  | (67,431) |  |
Net income |  | $ | 11,564 |  |  | $ | 41,270 |  |  | $ | 52,834 |  |
BXP’s nominal ownership percentage |  | 60.00% |  | 55.00% |  |  |
Partners’ share of NOI (after income allocation to private REIT shareholders) 4 |  | $ | 18,983 |  |  | $ | 31,064 |  |  | $ | 50,047 |  |
BXP’s share of NOI (after income allocation to private REIT shareholders) |  | $ | 30,164 |  |  | $ | 40,054 |  |  | $ | 70,218 |  |
Unearned portion of capitalized fees 5 |  | $ | 599 |  |  | $ | 684 |  |  | $ | 1,283 |  |
Partners’ share of select items 4 |  |  |  |  |  |  |
Partners’ share of parking and other revenue |  | $ | — |  |  | $ | 1,080 |  |  | $ | 1,080 |  |
Partners’ share of hedge amortization |  | $ | 144 |  |  | $ | — |  |  | $ | 144 |  |
Partners’ share of amortization of financing costs |  | $ | 346 |  |  | $ | 152 |  |  | $ | 498 |  |
Partners’ share of depreciation and amortization related to capitalized fees |  | $ | 385 |  |  | $ | 443 |  |  | $ | 828 |  |
Partners’ share of capitalized interest |  | $ | 16 |  |  | $ | — |  |  | $ | 16 |  |
Partners’ share of lease transaction costs that qualify as rent inducements |  | $ | — |  |  | $ | (303) |  |  | $ | (303) |  |
Partners’ share of management and other fees |  | $ | 678 |  |  | $ | 944 |  |  | $ | 1,622 |  |
Partners’ share of basis differential depreciation and amortization expense |  | $ | (23) |  |  | $ | (175) |  |  | $ | (198) |  |
Partners’ share of basis differential interest and other adjustments |  | $ | (4) |  |  | $ | 40 |  |  | $ | 36 |  |
Reconciliation of Partners’ share of EBITDA re 6 |  |  |  |  |  |  |
Partners’ NCI |  | $ | 3,589 |  |  | $ | 17,320 |  |  | $ | 20,909 |  |
Add: |  |  |  |  |  |  |
Partners’ share of interest expense after BXP’s basis differential |  | 8,538 |  |  | 3,481 |  |  | 12,019 |  |
Partners’ share of depreciation and amortization expense after BXP’s basis differential |  | 7,259 |  |  | 10,915 |  |  | 18,174 |  |
Partners’ share of EBITDA re |  | $ | 19,386 |  |  | $ | 31,716 |  |  | $ | 51,102 |  |

61

| Q3 2023
Reconciliations (continued)

for the three months ended September 30, 2023
(unaudited and dollars in thousands)

CONSOLIDATED JOINT VENTURES |  |  |  |  |  |
|  |  |  | Norges Joint Ventures |  |
|  |  |  | Times Square Tower |  |
|  |  |  | 601 Lexington Avenue / One Five Nine East 53rd Street |  |
|  |  |  | 100 Federal Street |  |
|  | 767 Fifth Avenue |  | Atlantic Wharf Office |  | Total Consolidated
Reconciliation of Partners’ share of Net Operating Income (Loss) (NOI) 6 |  | (The GM Building) |  | 343 Madison Avenue 1 |  | Joint Ventures
Rental revenue 3 |  | $ | 32,998 |  |  | $ | 50,205 |  |  | $ | 83,203 |
Less: Termination income |  | — |  |  | 129 |  |  | 129 |
Rental revenue (excluding termination income) 3 |  | 32,998 |  |  | 50,076 |  |  | 83,074 |
Less: Operating expenses (including partners’ share of management and other fees) |  | 14,015 |  |  | 19,141 |  |  | 33,156 |
Income allocation to private REIT shareholders |  | — |  |  | — |  |  | — |
NOI (excluding termination income and after income allocation to private REIT shareholders) |  | $ | 18,983 |  |  | $ | 30,935 |  |  | $ | 49,918 |
Rental revenue (excluding termination income) 3 |  | $ | 32,998 |  |  | $ | 50,076 |  |  | $ | 83,074 |
Less: Straight-line rent |  | 2,152 |  |  | 3,842 |  |  | 5,994 |
Fair value lease revenue |  | 131 |  |  | 6 |  |  | 137 |
Add: Lease transaction costs that qualify as rent inducements |  | — |  |  | 303 |  |  | 303 |
Subtotal |  | 30,715 |  |  | 46,531 |  |  | 77,246 |
Less: Operating expenses (including partners’ share of management and other fees) |  | 14,015 |  |  | 19,141 |  |  | 33,156 |
Income allocation to private REIT shareholders |  | — |  |  | — |  |  | — |
NOI - cash (excluding termination income and after income allocation to private REIT shareholders) |  | $ | 16,700 |  |  | $ | 27,390 |  |  | $ | 44,090 |
Reconciliation of Partners’ share of Revenue 4 |  |  |  |  |  |
Rental revenue 3 |  | $ | 32,998 |  |  | $ | 50,205 |  |  | $ | 83,203 |
Add: Development and management services revenue |  | — |  |  | — |  |  | — |
Revenue |  | $ | 32,998 |  |  | $ | 50,205 |  |  | $ | 83,203 |

_________
1 See Land Parcels and Purchase Options section of this Supplemental package on page 16.
2 Lease revenue includes recoveries from clients and service income from clients.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 Amounts represent the partners’ share based on their respective ownership percentage.
5 Capitalized fees are eliminated in consolidation and recognized over the life of the asset as depreciation and amortization are added back to the Company’s net income.
6 Amounts represent the partners’ share based on their respective ownership percentages and are adjusted for basis differentials and the allocations of management and other fees and depreciation and amortization related to capitalized fees.
62

| Q3 2023
Reconciliations (continued)

for the three months ended September 30, 2023
(unaudited and dollars in thousands)
UNCONSOLIDATED JOINT VENTURES 1

|  | Boston |  | Los Angeles |  | New York |  | San Francisco |  | Seattle |  | Washington, DC |  |  |  |  |  |  |  |  |  |  |  |  |  | Total Unconsolidated Joint Ventures
Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease 2 |  | $ | 24,452 |  |  | $ | 35,503 |  |  | $ | 23,703 |  |  | $ | 12,418 |  |  | $ | 6,781 |  |  | $ | 28,949 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 131,806 |
Straight-line rent |  | 1,883 |  |  | (1,147) |  |  | 1,125 |  |  | 1,274 |  |  | 526 |  |  | 4,002 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,663 |
Fair value lease revenue |  | — |  |  | 116 |  |  | 1,538 |  |  | 18 |  |  | 1,134 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,806 |
Termination income |  | — |  |  | 1,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |
Total lease revenue |  | 26,335 |  |  | 35,472 |  |  | 26,366 |  |  | 13,710 |  |  | 8,441 |  |  | 32,951 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 143,275 |
Parking and other |  | 1,072 |  |  | 3,771 |  |  | 69 |  |  | 304 |  |  | 467 |  |  | 1,794 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,477 |
Total rental revenue 3 |  | 27,407 |  |  | 39,243 |  |  | 26,435 |  |  | 14,014 |  |  | 8,908 |  |  | 34,745 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 150,752 |
Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Operating |  | 11,516 |  |  | 15,923 |  |  | 14,067 |  | 4 | 5,513 |  |  | 3,343 |  |  | 14,374 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 64,736 |
Net operating income/(loss) |  | 15,891 |  |  | 23,320 |  |  | 12,368 |  |  | 8,501 |  |  | 5,565 |  |  | 20,371 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 86,016 |
Other income/(expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Development and management services revenue |  | — |  |  | — |  |  | 596 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 596 |
Interest and other income |  | 343 |  |  | 624 |  |  | 288 |  |  | (5) |  |  | 122 |  |  | 831 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,203 |
Interest expense |  | (11,861) |  |  | (11,964) |  |  | (13,517) |  |  | — |  |  | (4,171) |  |  | (19,224) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (60,737) |
Unrealized gain on derivative instruments |  | — |  |  | — |  |  | 10,242 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,242 |
Transaction costs |  | (47) |  |  | — |  |  | — |  |  | — |  |  | (31) |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (78) |
Depreciation and amortization expense |  | (8,392) |  |  | (12,294) |  |  | (8,698) |  |  | (5,118) |  |  | (5,312) |  |  | (10,026) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (49,840) |
General and administrative expense |  | (130) |  |  | (126) |  |  | (120) |  |  | — |  |  | — |  |  | (7) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (383) |
Total other income/(expense) |  | (20,087) |  |  | (23,760) |  |  | (11,209) |  |  | (5,123) |  |  | (9,392) |  |  | (28,426) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (97,997) |
Net income/(loss) |  | $ | (4,196) |  |  | $ | (440) |  |  | $ | 1,159 |  |  | $ | 3,378 |  |  | $ | (3,827) |  |  | $ | (8,055) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (11,981) |
BXP’s share of select items: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of parking and other revenue |  | $ | 536 |  |  | $ | 1,967 |  |  | $ | 31 |  |  | $ | 152 |  |  | $ | 157 |  |  | $ | 622 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 3,465 |
BXP’s share of amortization of financing costs |  | $ | 163 |  |  | $ | 96 |  |  | $ | 65 |  |  | $ | — |  |  | $ | 28 |  |  | $ | 289 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 641 |
BXP’s share of hedge amortization, net of costs |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (1,971) |  |  | $ | 52 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | (1,919) |
BXP’s share of fair value interest adjustment |  | $ | — |  |  | $ | — |  |  | $ | 499 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 499 |
BXP’s share of capitalized interest |  | $ | — |  |  | $ | — |  |  | $ | 1,753 |  |  | $ | — |  |  | $ | — |  |  | $ | 169 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 1,922 |
Reconciliation of BXP’s share of EBITDA re |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income/(loss) from unconsolidated joint ventures |  | $ | (2,105) |  |  | $ | (1,157) |  |  | $ | (93,157) |  |  | $ | (154,286) |  |  | $ | (31,215) |  |  | $ | 34,364 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | (247,556) |
Add: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of interest expense |  | 5,931 |  |  | 6,328 |  |  | 4,901 |  |  | — |  |  | 1,404 |  |  | 6,681 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 25,245 |
BXP’s share of depreciation and amortization expense |  | 4,203 |  |  | 7,582 |  | 6 | 5,108 |  |  | 3,061 |  | 6 | 1,788 |  |  | 3,924 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 25,666 |
Impairment loss on investment 7 |  | — |  |  | — |  |  | 87,436 |  |  | 155,245 |  |  | 29,922 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 272,603 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on investment |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 35,756 |  | 8 |  |  |  |  |  |  |  |  |  |  |  |  | 35,756 |
BXP’s share of EBITDA re |  | $ | 8,029 |  |  | $ | 12,753 |  | 6 | $ | 4,288 |  |  | $ | 4,020 |  | 6 | $ | 1,899 |  |  | $ | 9,213 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 40,202 |

63

| Q3 2023
Reconciliations (continued)

UNCONSOLIDATED JOINT VENTURES 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reconciliation of BXP’s share of Net Operating Income/(Loss) |  | Boston |  | Los Angeles |  | New York |  | San Francisco |  | Seattle |  | Washington, DC |  |  |  |  |  |  |  |  |  |  |  |  |  | Total Unconsolidated Joint Ventures
BXP’s share of rental revenue 3 |  | $ | 13,704 |  |  | $ | 20,896 |  | 6 | $ | 8,591 |  | 6 | $ | 6,780 |  | 6 | $ | 2,999 |  |  | $ | 14,455 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 67,425 |
BXP’s share of operating expenses |  | 5,758 |  |  | 8,388 |  |  | 4,653 |  |  | 2,757 |  |  | 1,125 |  |  | 5,579 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 28,260 |
BXP’s share of net operating income/(loss) |  | 7,946 |  |  | 12,508 |  | 6 | 3,938 |  | 6 | 4,023 |  | 6 | 1,874 |  |  | 8,876 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 39,165 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of termination income |  | — |  |  | 500 |  |  | — |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500 |
BXP’s share of net operating income/(loss) (excluding termination income) |  | 7,946 |  |  | 12,008 |  |  | 3,938 |  |  | 4,023 |  |  | 1,874 |  |  | 8,876 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 38,665 |
Less: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of straight-line rent |  | 942 |  |  | (531) |  | 6 | 941 |  | 6 | 629 |  | 6 | 177 |  |  | 1,344 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 3,502 |
BXP’s share of fair value lease revenue |  | — |  |  | 365 |  | 6 | 527 |  | 6 | (211) |  | 6 | 382 |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,063 |
Add: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of straight-line ground rent expense adjustment |  | — |  |  | — |  |  | 141 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 141 |
BXP’s share of lease transaction costs that qualify as rent inducements |  | — |  |  | — |  |  | 122 |  |  | — |  |  | — |  |  | 161 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | 283 |
BXP’s share of net operating income/(loss) - cash (excluding termination income) |  | $ | 7,004 |  |  | $ | 12,174 |  | 6 | $ | 2,733 |  | 6 | $ | 3,605 |  | 6 | $ | 1,315 |  |  | $ | 7,693 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 34,524 |
Reconciliation of BXP’s share of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of rental revenue 3 |  | $ | 13,704 |  |  | $ | 20,896 |  | 6 | $ | 8,591 |  | 6 | $ | 6,780 |  | 6 | $ | 2,999 |  |  | $ | 14,455 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 67,425 |
Add: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BXP’s share of development and management services revenue |  | — |  |  | — |  |  | 298 |  |  | — |  |  | — |  |  | — |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 298 |
BXP’s share of revenue |  | $ | 13,704 |  |  | $ | 20,896 |  | 6 | $ | 8,889 |  | 6 | $ | 6,780 |  | 6 | $ | 2,999 |  |  | $ | 14,455 |  | 5 |  |  |  |  |  |  |  |  |  |  |  |  | $ | 67,723 |

_____________
1 For information on the properties included for each region and the Company’s percentage ownership in each property, see pages 21-24.
2 Lease revenue includes recoveries from clients and service income from clients.
3 See the Definitions and Reconciliations sections of this Supplemental package starting on page 55.
4 Includes approximately $282 of straight-line ground rent expense.
5 Reflects the allocation percentages pursuant to the achievement of specified investment return thresholds as provided for in the joint venture agreement of 901 New York Avenue.
6 The Company’s purchase price allocation under ASC 805 for certain joint ventures differs from the historical basis of the venture.
7 Represents the other-than-temporary decline in the fair values below the carrying values of certain of the Company’s investments in unconsolidated joint ventures, see page 35.
8 See page 35 for more information.
64

| Q3 2023
Reconciliations (continued)

Reconciliation of Net income attributable to Boston Properties, Inc. to
BXP’s Share of same property net operating income (NOI)
(dollars in thousands)

|  | Three Months Ended
|  | 30-Jun-23 |  | 30-Jun-22
Net income attributable to Boston Properties, Inc. |  | $ | 104,299 |  |  | $ | 222,989 |
Net income attributable to noncontrolling interests: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | 12,117 |  |  | 25,708 |
Noncontrolling interest in property partnerships |  | 19,768 |  |  | 18,546 |
Net income |  | 136,184 |  |  | 267,243 |
Add: |  |  |  |
Interest expense |  | 142,473 |  |  | 104,142 |
Depreciation and amortization expense |  | 202,577 |  |  | 183,146 |
Transaction costs |  | 308 |  |  | 496 |
Payroll and related costs from management services contracts |  | 4,609 |  |  | 3,239 |
General and administrative expense |  | 44,175 |  |  | 34,665 |
Less: |  |  |  |
Other income - assignment fee |  | — |  |  | 6,624 |
Interest and other income (loss) |  | 17,343 |  |  | 1,195 |
Unrealized gain on non-real estate investment |  | 124 |  |  | — |
Gains (losses) from investments in securities |  | 1,571 |  |  | (4,716) |
Loss from unconsolidated joint ventures |  | (6,668) |  |  | (54) |
Gains on sales of real estate |  | — |  |  | 96,247 |
Direct reimbursements of payroll and related costs from management services contracts |  | 4,609 |  |  | 3,239 |
Development and management services revenue |  | 9,858 |  |  | 6,354 |
Net Operating Income (NOI) |  | 503,489 |  |  | 484,042 |
Add: |  |  |  |
BXP’s share of NOI from unconsolidated joint ventures |  | 42,254 |  |  | 35,710 |
Less: |  |  |  |
Partners’ share of NOI from consolidated joint ventures (after income allocation to private REIT shareholders) |  | 47,958 |  |  | 47,862 |
BXP’s Share of NOI |  | 497,785 |  |  | 471,890 |
Less: |  |  |  |
Termination income |  | (164) |  |  | 1,922 |
BXP’s share of termination income from unconsolidated joint ventures |  | 3,113 |  |  | (1) |
Add: |  |  |  |
Partners’ share of termination income from consolidated joint ventures |  | (276) |  |  | 641 |
BXP’s Share of NOI (excluding termination income) |  | $ | 494,560 |  |  | $ | 470,610 |
Net Operating Income (NOI) |  | $ | 503,489 |  |  | $ | 484,042 |
Less: |  |  |  |
Termination income |  | (164) |  |  | 1,922 |
NOI from non Same Properties (excluding termination income) |  | 47,480 |  |  | 26,993 |
Same Property NOI (excluding termination income) |  | 456,173 |  |  | 455,127 |
Less: |  |  |  |
Partners’ share of NOI from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) |  | 48,234 |  |  | 47,221 |
Add: |  |  |  |
Partners’ share of NOI from non Same Properties from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) |  | — |  |  | — |
BXP’s share of NOI from unconsolidated joint ventures (excluding termination income) |  | 39,141 |  |  | 35,711 |
Less: |  |  |  |
BXP’s share of NOI from non Same Properties from unconsolidated joint ventures (excluding termination income) |  | 3,681 |  |  | 248 |
BXP’s Share of Same Property NOI (excluding termination income) |  | $ | 443,399 |  |  | $ | 443,369 |
Change in BXP’s Share of Same Property NOI (excluding termination income) |  | $ | 30 |  |  |
Change in BXP’s Share of Same Property NOI (excluding termination income) |  | — | % |  |

65

| Q3 2023
Reconciliations (continued)

Reconciliation of Net income attributable to Boston Properties, Inc. to
BXP’s Share of same property net operating income (NOI) - cash
(dollars in thousands)

|  | Three Months Ended
|  | 30-Jun-23 |  | 30-Jun-22
Net income attributable to Boston Properties, Inc. |  | $ | 104,299 |  |  | $ | 222,989 |
Net income attributable to noncontrolling interests: |  |  |  |
Noncontrolling interest - common units of the Operating Partnership |  | 12,117 |  |  | 25,708 |
Noncontrolling interest in property partnerships |  | 19,768 |  |  | 18,546 |
Net income |  | 136,184 |  |  | 267,243 |
Add: |  |  |  |
Interest expense |  | 142,473 |  |  | 104,142 |
Depreciation and amortization expense |  | 202,577 |  |  | 183,146 |
Transaction costs |  | 308 |  |  | 496 |
Payroll and related costs from management services contracts |  | 4,609 |  |  | 3,239 |
General and administrative expense |  | 44,175 |  |  | 34,665 |
Less: |  |  |  |
Other income - assignment fee |  | — |  |  | 6,624 |
Interest and other income (loss) |  | 17,343 |  |  | 1,195 |
Unrealized gain on non-real estate investment |  | 124 |  |  | — |
Gains (losses) from investments in securities |  | 1,571 |  |  | (4,716) |
Loss from unconsolidated joint ventures |  | (6,668) |  |  | (54) |
Gains on sales of real estate |  | — |  |  | 96,247 |
Direct reimbursements of payroll and related costs from management services contracts |  | 4,609 |  |  | 3,239 |
Development and management services revenue |  | 9,858 |  |  | 6,354 |
Net Operating Income (NOI) |  | 503,489 |  |  | 484,042 |
Less: |  |  |  |
Straight-line rent |  | 26,493 |  |  | 21,601 |
Fair value lease revenue |  | 5,850 |  |  | 1,919 |
Amortization and accretion related to sales type lease |  | 229 |  |  | — |
Termination income |  | (164) |  |  | 1,922 |
Add: |  |  |  |
Straight-line ground rent expense adjustment 1 |  | 578 |  |  | 631 |
Lease transaction costs that qualify as rent inducements 2 |  | 3,402 |  |  | 4,452 |
NOI - cash (excluding termination income) |  | 475,061 |  |  | 463,683 |
Less: |  |  |  |
NOI - cash from non Same Properties (excluding termination income) |  | 34,102 |  |  | 22,510 |
Same Property NOI - cash (excluding termination income) |  | 440,959 |  |  | 441,173 |
Less: |  |  |  |
Partners’ share of NOI - cash from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) |  | 43,732 |  |  | 46,996 |
Add: |  |  |  |
Partners’ share of NOI - cash from non Same Properties from consolidated joint ventures (excluding termination income and after income allocation to private REIT shareholders) |  | — |  |  | — |
BXP’s share of NOI - cash from unconsolidated joint ventures (excluding termination income) |  | 35,250 |  |  | 26,426 |
Less: |  |  |  |
BXP’s share of NOI - cash from non Same Properties from unconsolidated joint ventures (excluding termination income) |  | 2,832 |  |  | 248 |
BXP’s Share of Same Property NOI - cash (excluding termination income) |  | $ | 429,645 |  |  | $ | 420,355 |
Change in BXP’s Share of Same Property NOI - cash (excluding termination income) |  | $ | 9,290 |  |  |
Change in BXP’s Share of Same Property NOI - cash (excluding termination income) |  | 2.2 | % |  |

_____________
1 In light of the front-ended, uneven rental payments required by the Company’s 99-year ground and air rights lease for the 100 Clarendon Street garage and Back Bay Transit Station in Boston, MA, and to make period-to-period comparisons more meaningful to investors, the adjustment does not include the straight-line impact of approximately $91 and $115 for the three months ended June 30, 2023 and 2022, respectively. As of June 30, 2023, the Company has remaining lease payments aggregating approximately $24.4 million, all of which it expects to incur by the end of 2025 with no payments thereafter. Under GAAP, the Company recognizes expense of $(87) per quarter on a straight-line basis over the term of the lease. However, unlike more traditional ground and air rights leases, the timing and amounts of the rental payments by the Company correlate to the uneven timing and funding by the Company of capital expenditures related to improvements at Back Bay Transit Station. As a result, the amounts excluded from the adjustment each quarter through 2025 may vary significantly.
2 Consists of lease transaction costs that qualify as rent inducements in accordance with GAAP.
66

| Q3 2023
Consolidated Income Statement - prior year

(unaudited and in thousands, except per share amounts)

|  | Three Months Ended
|  | 30-Sep-22 |  | 30-Jun-22
Revenue |  |  |  |
Lease |  | $ | 739,255 |  |  | $ | 721,899 |
Parking and other |  | 26,259 |  |  | 26,474 |
Insurance proceeds |  | 1,895 |  |  | 3,872 |
Hotel revenue |  | 11,749 |  |  | 12,089 |
Development and management services |  | 7,465 |  |  | 6,354 |
Direct reimbursements of payroll and related costs from management services contracts |  | 3,900 |  |  | 3,239 |
Total revenue |  | 790,523 |  |  | 773,927 |
Expenses |  |  |  |
Operating |  | 145,083 |  |  | 137,531 |
Real estate taxes |  | 135,670 |  |  | 132,056 |
Demolition costs |  | — |  |  | — |
Restoration expenses related to insurance claim |  | 949 |  |  | 4,261 |
Hotel operating |  | 8,548 |  |  | 6,444 |
General and administrative |  | 32,519 |  |  | 34,665 |
Payroll and related costs from management services contracts |  | 3,900 |  |  | 3,239 |
Transaction costs |  | 1,650 |  |  | 496 |
Depreciation and amortization |  | 190,675 |  |  | 183,146 |
Total expenses |  | 518,994 |  |  | 501,838 |
Other income (expense) |  |  |  |
Loss from unconsolidated joint ventures |  | (3,524) |  |  | (54) |
Gains on sales of real estate |  | 262,345 |  |  | 96,247 |
Losses from investments in securities |  | (1,571) |  |  | (4,716) |
Interest and other income (loss) |  | 3,728 |  |  | 1,195 |
Other income - assignment fee |  | — |  |  | 6,624 |
Interest expense |  | (111,846) |  |  | (104,142) |
Net income |  | 420,661 |  |  | 267,243 |
Net income attributable to noncontrolling interests |  |  |  |
Noncontrolling interest in property partnerships |  | (18,801) |  |  | (18,546) |
Noncontrolling interest - common units of the Operating Partnership |  | (40,883) |  |  | (25,708) |
Net income attributable to Boston Properties, Inc. |  | $ | 360,977 |  |  | $ | 222,989 |
INCOME PER SHARE OF COMMON STOCK (EPS) |  |  |  |
Net income attributable to Boston Properties, Inc. per share - basic |  | $ | 2.30 |  |  | $ | 1.42 |
Net income attributable to Boston Properties, Inc. per share - diluted |  | $ | 2.29 |  |  | $ | 1.42 |

67