THOMAS OWEN D

SEC source: 0001339081-26-000008 · wk-form4_1771011489.xml · nonDerivative · entry 3

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Glenowen Holdings, LLC

Disclosed balance after: 0

F2 · price: Represents the weighted average sale price. These shares were sold in multiple transactions at sale prices ranging from $61.17 to $61.26, inclusive. The Reporting Person undertakes to provide upon request by the U.S. Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

F1 · ownership.nature: Reflects shares of Common Stock held by Glenowen Holdings, LLC, of which the Reporting Person is a co-manager and members of the Reporting Person's immediate family are members, acquired through inheritance. The Reporting Person disclaims beneficial ownership of the shares held by Glenowen Holdings, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001339081-26-000012 · wk-form4_1771360397.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,107,523

Underlying: Common OP Units · 35,930 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to BXP, Inc.'s ("BXP's"), the Issuer's sole general partner's, 2023 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 34,102 LTIP Units originally issued on February 7, 2023 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 7, 2023 to February 6, 2026.

SEC source: 0001339081-26-000011 · wk-form4_1771360378.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,107,523

Underlying: Common Stock, par value $.01 · 35,930 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2023 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 34,102 LTIP Units originally issued on February 7, 2023 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 7, 2023 to February 6, 2026.

SEC source: 0001339081-26-000003 · wk-form4_1770065749.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,105,695

Underlying: Common OP Units · 73,063 shares

Expires not disclosed

F1 · security: Represents units of limited partnership in the Issuer issued pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership in the Issuer issued pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership in the Issuer issued pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 73,063 LTIP Units were fully vested upon grant pursuant to the Reporting Person's employment agreement.

F1 · derivative.expiration_date: Represents units of limited partnership in the Issuer issued pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

SEC source: 0001339081-26-000004 · wk-form4_1770065761.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,105,695

Underlying: Common Stock, par value $0.01 · 73,063 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 73,063 LTIP Units were fully vested upon grant pursuant to the Reporting Person's employment agreement.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

SEC source: 0001339081-26-000008 · wk-form4_1771011489.xml · nonDerivative · entry 2

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Glenowen Holdings, LLC

Disclosed balance after: 1,198

F1 · kind: Reflects shares of Common Stock held by Glenowen Holdings, LLC, of which the Reporting Person is a co-manager and members of the Reporting Person's immediate family are members, acquired through inheritance. The Reporting Person disclaims beneficial ownership of the shares held by Glenowen Holdings, LLC except to the extent of his pecuniary interest therein.

F1 · ownership.nature: Reflects shares of Common Stock held by Glenowen Holdings, LLC, of which the Reporting Person is a co-manager and members of the Reporting Person's immediate family are members, acquired through inheritance. The Reporting Person disclaims beneficial ownership of the shares held by Glenowen Holdings, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001339081-25-000004 · wk-form4_1766442019.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,032,632

Underlying: Common OP Units · 211,864 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer, granted pursuant to BXP, Inc.'s ("BXP") 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in the Issuer, granted pursuant to BXP, Inc.'s ("BXP") 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in the Issuer, granted pursuant to BXP, Inc.'s ("BXP") 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of common stock of BXP. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The LTIP Units granted pursuant to the 2025 OPP may be earned based on the appreciation of BXP's common stock price during the four-year performance period ending December 22, 2029. The number of LTIP Units earned, if any, will be determined based on the highest level of achievement of eight performance tiers ranging from $90.00 to $118.00, with 12.5% of the LTIP Units earned at $90.00 and 100% of the LTIP Units earned at $118.00. Linear interpolation does not apply for performance between tiers; however, each $4.00 increase in performance will increase the percentage of the maximum award earned by 12.5%. A performance tier will be achieved if the dividend-adjusted closing price of BXP's common stock equals or exceeds the applicable performance tier over any period of twenty (20) consecutive trading days during the performance period.

F3 · derivative.exercise_date: The LTIP Units are also subject to time-based vesting conditions, with one-third vesting on the second anniversary of the grant date and the remaining two-thirds vesting ratably over the third and fourth years, subject to continued service and the achievement of the performance-based vesting conditions described above.

F1 · derivative.expiration_date: Represents units of limited partnership interest in the Issuer, granted pursuant to BXP, Inc.'s ("BXP") 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of common stock of BXP. LTIP Units have no expiration date.

SEC source: 0001339081-25-000005 · wk-form4_1766442095.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,032,632

Underlying: Common Stock, par value $0.01 · 211,864 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of its common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of its common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of its common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The LTIP Units granted pursuant to the 2025 OPP may be earned based on the appreciation of the Issuer's common stock price during the four-year performance period ending December 22, 2029. The number of LTIP Units earned, if any, will be determined based on the highest level of achievement of eight performance tiers ranging from $90.00 to $118.00, with 12.5% of the LTIP Units earned at $90.00 and 100% of the LTIP Units earned at $118.00. Linear interpolation does not apply for performance between tiers; however, each $4.00 increase in performance will increase the percentage of the maximum award earned by 12.5%. A performance tier will be achieved if the dividend-adjusted closing price of the Issuer's common stock equals or exceeds the applicable performance tier over any period of twenty (20) consecutive trading days during the performance period.

F3 · derivative.exercise_date: The LTIP Units are also subject to time-based vesting conditions, with one-third vesting on the second anniversary of the grant date and the remaining two-thirds vesting ratably over the third and fourth years, subject to continued service and the achievement of the performance-based vesting conditions described above.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2025 Outperformance Plan (the "2025 OPP"). Conditioned on the minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit") only if the performance-based and time-based vesting conditions described below are met. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of its common stock. LTIP Units have no expiration date.

SEC source: 0001339081-26-000008 · wk-form4_1771011489.xml · nonDerivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By Glenowen Holdings, LLC

Disclosed balance after: 990

F1 · kind: Reflects shares of Common Stock held by Glenowen Holdings, LLC, of which the Reporting Person is a co-manager and members of the Reporting Person's immediate family are members, acquired through inheritance. The Reporting Person disclaims beneficial ownership of the shares held by Glenowen Holdings, LLC except to the extent of his pecuniary interest therein.

F1 · ownership.nature: Reflects shares of Common Stock held by Glenowen Holdings, LLC, of which the Reporting Person is a co-manager and members of the Reporting Person's immediate family are members, acquired through inheritance. The Reporting Person disclaims beneficial ownership of the shares held by Glenowen Holdings, LLC except to the extent of his pecuniary interest therein.

SEC source: 0001246991-25-000106 · wk-form4_1739218555.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 820,768

Underlying: Common OP Units · 20,076 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to BXP, Inc.'s ("BXP's"), the Issuer's sole general partner's, 2022 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 20,076 LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 34,716 LTIP Units originally issued on February 1, 2022 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 1, 2022 to January 31, 2025.

SEC source: 0001246991-25-000113 · wk-form4_1739218626.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 820,768

Underlying: Common Stock, par value $.01 · 20,076 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2022 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 20,076 LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 34,716 LTIP Units originally issued on February 1, 2022 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 1, 2022 to January 31, 2025.

SEC source: 0001246991-25-000059 · wk-form4_1738617056.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 835,408

Underlying: Common OP Units · 64,602 shares

Expires not disclosed

F1 · security: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 64,602 LTIP Units vest in four equal annual installments beginning on January 15, 2026.

F1 · derivative.expiration_date: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to BXP, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

SEC source: 0001246991-25-000064 · wk-form4_1738617117.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 835,408

Underlying: Common Stock, par value $0.01 · 64,602 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 64,602 LTIP Units vest in four equal annual installments beginning on January 15, 2026.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

SEC source: 0001246991-24-000188 · wk-form4_1707924619.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 770,806

Underlying: Common OP Units · 47,253 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BXP's"), the Issuer's sole general partner's, 2021 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 47,253 LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 39,513 LTIP Units originally issued on February 2, 2021 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 2, 2021 to February 1, 2024.

SEC source: 0001246991-24-000197 · wk-form4_1707924737.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 770,806

Underlying: Common Stock, par value $.01 · 47,253 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2021 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 47,253 LTIP Units earned pursuant to the Program vested in full upon being earned. Each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit is subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F4 · balance_after: Reflects the forfeiture of 39,513 LTIP Units originally issued on February 2, 2021 pursuant to the Program that were previously reported as beneficially owned by the Reporting Person, but remained subject to certain performance-based vesting hurdles based on the Issuer's total shareholder return for the period from February 2, 2021 to February 1, 2024.

SEC source: 0001246991-24-000145 · wk-form4_1707425053.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 763,066

Underlying: Common OP Units · 60,849 shares

Expires not disclosed

F1 · security: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.expiration_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F2 · derivative.expiration_date: The 60,849 LTIP Units may be earned based on the achievement of certain performance criteria based on BXP's total shareholder return over a three-year performance period ending on February 5, 2027. Any LTIP Units earned pursuant to the 2024 Program will vest in full on February 5, 2027, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

SEC source: 0001246991-24-000157 · wk-form4_1707425195.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 763,066

Underlying: Common Stock, par value $.01 · 60,849 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 60,849 LTIP Units may be earned based on the achievement of certain performance criteria based on the Issuer's total shareholder return over a three-year performance period ending on February 5, 2027. Any LTIP Units earned pursuant to the 2024 Program will vest in full on February 5, 2027, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2024 Multi-Year Long-Term Incentive Program (the "2024 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

SEC source: 0001246991-24-000113 · wk-form4_1707242111.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 702,217

Underlying: Common OP Units · 70,654 shares

Expires not disclosed

F1 · security: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 70,654 LTIP Units were fully vested upon issuance as a result of the Reporting Person's attainment of age 62 and the completion of 10 years of service.

F1 · derivative.expiration_date: Represents units of limited partnership in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

SEC source: 0001246991-24-000106 · wk-form4_1707242027.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 702,217

Underlying: Common Stock, par value $.01 · 70,654 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 70,654 LTIP Units were fully vested upon issuance as a result of the Reporting Person's attainment of age 62 and the completion of 10 years of service.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued pursuant to the Issuer's equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of common stock. LTIP Units have no expiration date.

SEC source: 0001246991-23-000128 · wf-form4_167649418678828.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 631,563

Underlying: Common OP Units · 18,407 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BXP's"), the Issuer's sole general partner's, 2020 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 18,407 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 3, 2024.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's common stock. LTIP Units have no expiration date.

SEC source: 0001246991-23-000129 · wf-form4_167649420554346.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 631,563

Underlying: Common Stock, par value $0.01 · 18,407 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2020 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 18,407 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 3, 2024.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's common stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of the Issuer's common stock. LTIP Units have no expiration date.

SEC source: 0001246991-23-000097 · wf-form4_167597207827807.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 613,156

Underlying: Common OP Units · 59,308 shares

Expires not disclosed

F1 · security: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 59,308 LTIP Units may be earned based on the achievement of certain performance criteria based on BXP's total shareholder return over a three-year performance period ending on February 6, 2026. Any LTIP Units earned pursuant to the 2023 Program will vest in full on February 6, 2026, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

SEC source: 0001246991-23-000091 · wf-form4_167597195980908.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 613,156

Underlying: Common Stock, par value $0.01 · 59,308 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date

F2 · derivative.exercise_date: The 59,308 LTIP Units may be earned based on the achievement of certain performance criteria based on the Issuer's total shareholder return over a three-year performance period ending on February 6, 2026. Any LTIP Units earned pursuant to the 2023 Program will vest in full on February 6, 2026, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2023 Multi-Year Long-Term Incentive Program (the "2023 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date

SEC source: 0001246991-23-000061 · wf-form4_167579999548840.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 553,848

Underlying: Common OP Units · 56,637 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 56,637 LTIP Units vest in four equal annual installments beginning on January 15, 2024.

F1 · derivative.expiration_date: Represents units of limited partnership interest in the Issuer issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, equity based incentive programs ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of BXP's common stock except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of BXP's common stock. LTIP Units have no expiration date.

SEC source: 0001246991-23-000057 · wf-form4_167579990970173.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 553,848

Underlying: Common Stock, par value $0.01 · 56,637 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 56,637 LTIP Units vest in four equal annual installments beginning on January 15, 2024.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-22-000135 · wf-form4_164513830927701.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 497,211

Underlying: Common OP Units · 24,691 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BXP's"), the Issuer's sole general partner's, 2019 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 24,691 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 4, 2023.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BXP, except that BXP may, at its election, acquire each Common OP Unit so presented for one share of BXP's Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-22-000128 · wf-form4_164513814307376.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 497,211

Underlying: Common Stock, par value $0.01 · 24,691 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2019 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 24,691 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 4, 2023.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-22-000106 · wf-form4_164391367353862.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 472,520

Underlying: Common OP Units · 41,084 shares

Expires not disclosed

F1 · security: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 41,084 LTIP Units may be earned based on the achievement of certain performance criteria based on BXP's total shareholder return over a three-year performance period ending on January 31, 2025. Any LTIP Units earned pursuant to the 2022 Program will vest in full on January 31, 2025, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BXP"), the Issuer's general partner, 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BXP except that BXP may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BXP. LTIP Units have no expiration date.

SEC source: 0001246991-22-000105 · wf-form4_164391364549572.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 472,520

Underlying: Common Stock, par value $0.01 · 41,084 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 41,084 LTIP Units may be earned based on the achievement of certain performance criteria based on the Issuer's total shareholder return over a three-year performance period ending on January 31, 2025. Any LTIP Units earned pursuant to the 2022 Program will vest in full on January 31, 2025, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2022 Multi-Year Long-Term Incentive Program (the "2022 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-22-000062 · wf-form4_164375009029463.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 431,436

Underlying: Common OP Units · 37,533 shares

Expires not disclosed

F1 · security: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 37,533 LTIP Units vest in four equal annual installments beginning on January 15, 2023.

F1 · derivative.expiration_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the Issuer or the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-22-000061 · wf-form4_164374921655206.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 431,436

Underlying: Common Stock, par value $0.01 · 37,533 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 37,533 LTIP Units vest in four equal annual installments beginning on January 15, 2023.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of BPLP or the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-21-000131 · wf-form4_161359358785902.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 393,903

Underlying: Common OP Units · 16,800 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BPI's"), the Issuer's sole general partner's, 2018 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 16,800 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 5, 2022.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-21-000122 · wf-form4_161359337696418.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 393,903

Underlying: Common Stock, par value $0.01 · 16,800 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2018 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 16,800 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 5, 2022.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-21-000080 · wf-form4_161247213793946.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 377,103

Underlying: Common OP Units · 55,263 shares

Expires not disclosed

F1 · security: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit").Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit").Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit").Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 55,263 LTIP Units may be earned based on the achievement of certain performance criteria based on BPI's total shareholder return over a three-year performance period ending on February 1, 2024. Any LTIP Units earned pursuant to the 2021 Program will vest in full on February 1, 2024, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents LTIP Units granted pursuant to the Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit").Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-21-000079 · wf-form4_161247212258236.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 377,103

Underlying: Common Stock, par value $0.01 · 55,263 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 55,263 LTIP Units may be earned based on the achievement of certain performance criteria based on the Issuer's total shareholder return over a three-year performance period ending on February 1, 2024. Any LTIP Units earned pursuant to the 2021 Program will vest in full on February 1, 2024, with each earned LTIP Unit and Common OP Unit acquired upon conversion of such LTIP Unit subject to an additional post-vesting holding period pursuant to which such LTIP Unit and Common OP Unit generally may not be transferred, and the redemption right associated with the Common OP Unit may not be exercised, until one year after the vesting date.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, granted pursuant to the Issuer's 2021 Multi-Year Long-Term Incentive Program (the "2021 Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-21-000054 · wf-form4_161229135907128.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 321,840

Underlying: Common OP Units · 44,620 shares

Expires not disclosed

F1 · security: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 44,620 LTIP Units vest in four equal annual installments beginning on January 15, 2022.

F1 · derivative.expiration_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-21-000053 · wf-form4_161229134423980.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 321,840

Underlying: Common Stock, par value $0.01 · 44,620 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 44,620 LTIP Units vest in four equal annual installments beginning on January 15, 2022.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-20-000121 · wf-form4_158222751726783.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 277,220

Underlying: Common OP Units · 36,564 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BPI's"), the Issuer's sole general partner's, 2017 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 36,564 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 6, 2021.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-20-000112 · wf-form4_158222732337140.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 277,220

Underlying: Common Stock, par value $0.01 · 36,564 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2017 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 36,564 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 6, 2021.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-20-000055 · wf-form4_158076444685767.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,656

Underlying: Common OP Units · 28,409 shares

Expires not disclosed

F1 · security: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 28,409 LTIP Units vest in four equal annual installments beginning on January 15, 2021.

F1 · derivative.expiration_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-20-000056 · wf-form4_158076447108908.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 240,656

Underlying: Common Stock, par value $0.01 · 28,409 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 28,409 LTIP Units vest in four equal annual installments beginning on January 15, 2021.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-19-000071 · wf-form4_155069996392124.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 212,247

Underlying: Common OP Units · 30,964 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BPI's"), the Issuer's sole general partner's, 2016 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 30,964 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 9, 2020.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-19-000080 · wf-form4_155070030456289.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 212,247

Underlying: Common Stock, par value $0.01 · 30,964 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2016 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.expiration_date: The 30,964 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 9, 2020.

SEC source: 0001246991-19-000045 · wf-form4_154940479584866.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 181,283

Underlying: Common Stock, par value $0.01 · 33,351 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 33,351 LTIP Units vest in four equal annual installments beginning on January 15, 2020.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-19-000035 · wf-form4_154940442299476.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 181,283

Underlying: Common OP Units · 33,351 shares

Expires not disclosed

F1 · security: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 33,351 LTIP Units vest in four equal annual installments beginning on January 15, 2020.

F1 · derivative.expiration_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-18-000055 · wf-form4_151795612205942.xml · derivative · entry 2

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 147,932

Underlying: Common OP Units · 7,791 shares

Expires not disclosed

F3 · security: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to BPI's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F3 · derivative.exercise_price: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to BPI's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F3 · derivative.exercise_date: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to BPI's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F4 · derivative.exercise_date: The 7,791 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 4, 2019.

F3 · derivative.expiration_date: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to BPI's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-18-000056 · wf-form4_151795613895142.xml · derivative · entry 2

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 147,932

Underlying: Common Stock, par value $0.01 · 7,791 shares

Expires not disclosed

F3 · security: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_price: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F4 · derivative.exercise_date: The 7,791 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 4, 2019.

F3 · derivative.expiration_date: Represents LTIP Units earned (i.e., for which the performance-based hurdles have been met) pursuant to the Issuer's 2015 Multi-Year Long-Term Incentive Program (the "Program"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a Common OP Unit. Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-18-000055 · wf-form4_151795612205942.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,141

Underlying: Common OP Units · 32,260 shares

Expires not disclosed

F1 · security: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 32,260 LTIP Units vest in four equal annual installments beginning on January 15, 2019.

F1 · derivative.expiration_date: Issued as long term incentive compensation pursuant to Boston Properties, Inc.'s ("BPI"), the Issuer's general partner, equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be redeemed, at the election of the holder, for cash equal to the then fair market value of a share of common stock of BPI except that BPI may, at its election, acquire each Common OP Unit so presented for redemption for one share of common stock of BPI. LTIP Units have no expiration date.

SEC source: 0001246991-18-000056 · wf-form4_151795613895142.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,141

Underlying: Common Stock, par value $0.01 · 32,260 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_price: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F1 · derivative.exercise_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: The 32,260 LTIP Units vest in four equal annual installments beginning on January 15, 2019.

F1 · derivative.expiration_date: Represents units of limited partnership interest in Boston Properties Limited Partnership ("BPLP"), of which the Issuer is the general partner, issued as long term incentive compensation ("LTIP Units") pursuant to the Issuer's equity based incentive programs. Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in BPLP ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of the Issuer's Common Stock, except that the Issuer may, at its election, acquire each Common OP Unit so presented for one share of Common Stock. LTIP Units have no expiration date.

SEC source: 0001246991-17-000093 · wf-form4_148726643261066.xml · derivative · entry 1

THOMAS OWEN D · CIK 0001339081 · Director · Chief Executive Officer of GP

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 107,881

Underlying: Common OP Units · 6,132 shares

Expires not disclosed

F1 · security: Represents units of limited partnership interest in the Issuer earned (i.e., for which the performance-based hurdles have been met) pursuant to Boston Properties, Inc.'s ("BPI's"), the Issuer's sole general partner's, 2014 Multi-Year Long-Term Incentive Program (the "Program").

F2 · derivative.exercise_price: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F2 · derivative.exercise_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.

F3 · derivative.exercise_date: The 6,132 LTIP Units earned pursuant to the Program vested 50% upon being earned and 50% will vest on February 3, 2018.

F2 · derivative.expiration_date: Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes, each LTIP Unit may be converted, at the election of the holder, into a common unit of limited partnership interest in the Issuer ("Common OP Unit"). Each Common OP Unit acquired upon conversion of an LTIP Unit may be presented for redemption, at the election of the holder, for cash equal to the then fair market value of a share of Common Stock of BPI, except that BPI may, at its election, acquire each Common OP Unit so presented for one share of BPI's Common Stock. LTIP Units have no expiration date.