HASI

SEC source: 0001561894-24-000101 · wk-form4_1726604049.xml · nonDerivative · entry 3

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jeffrey W. Eckel Revocable Trust

Disclosed balance after: 455,169

F3 · price: On September 16, 2024, the reporting person's spouse transferred 18,450 shares into the Jeffrey W. Eckel Revocable Trust.

F2 · ownership.nature: These shares are held by the Jeffrey W. Eckel Revocable Trust, of which Jeffrey W. Eckel is the sole trustee and beneficiary.

SEC source: 0001561894-24-000101 · wk-form4_1726604049.xml · nonDerivative · entry 2

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jeffrey W. Eckel Revocable Trust

Disclosed balance after: 436,719

F2 · ownership.nature: These shares are held by the Jeffrey W. Eckel Revocable Trust, of which Jeffrey W. Eckel is the sole trustee and beneficiary.

SEC source: 0001561894-24-000101 · wk-form4_1726604049.xml · nonDerivative · entry 1

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jeffrey W. Eckel Revocable Trust

Disclosed balance after: 473,049

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.75 to $35.07, inclusive, on September 13, 2024. The reporting person undertakes to provide HA Sustainable Infrastructure Capital, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2 · ownership.nature: These shares are held by the Jeffrey W. Eckel Revocable Trust, of which Jeffrey W. Eckel is the sole trustee and beneficiary.

SEC source: 0001561894-24-000099 · wk-form4_1726172840.xml · nonDerivative · entry 2

Rose Nathaniel · CIK 0001574203 · EVP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,164

SEC source: 0001561894-24-000099 · wk-form4_1726172840.xml · nonDerivative · entry 1

Rose Nathaniel · CIK 0001574203 · EVP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 153,164

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.45 to $33.54, inclusive, on September 11, 2024. The reporting person undertakes to provide Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001561894-24-000079 · wk-form4_1717790803.xml · derivative · entry 2

Armbrister Clarence D · CIK 0001850745 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,832

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 14,832 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,832 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 14,832 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,832 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000078 · wk-form4_1717790790.xml · derivative · entry 2

Brenner Teresa · CIK 0001671844 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,068

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000085 · wk-form4_1717790882.xml · derivative · entry 2

ARDISANA LIZABETH A · CIK 0001283890 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,248

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F2 · derivative.exercise_price: 11,248 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 11,248 long-term incentive plan units("LTIP Units") in the Partnership.

F1 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F2 · derivative.exercise_date: 11,248 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 11,248 long-term incentive plan units("LTIP Units") in the Partnership.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000081 · wk-form4_1717790829.xml · derivative · entry 2

OSBORNE RICHARD J · CIK 0001236214 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,068

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000084 · wk-form4_1717790869.xml · derivative · entry 2

OSGOOD STEVEN G · CIK 0001306273 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Steven G Osgood TTEE Steven G Osgood TR U/A DTD 09 09 2019

Disclosed balance after: 39,126

Underlying: Common stock, par value $0.01 per share · 11,829 shares

Expires not disclosed

F1 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F2 · derivative.exercise_price: 39,126 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 39,126 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: 39,126 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 39,126 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F3 · derivative.expiration_date: N/A

F4 · ownership.nature: These LTIP Units are held Steven G Osgood TREE Steven G Osgood TR U/A DTD 09/09/2019, of which Mr. Osgood is the trustee. Ms. Osgood possesses the voting and investment power with respect to the shares of LTIP Units held by the Trust.

SEC source: 0001561894-24-000083 · wk-form4_1717790854.xml · derivative · entry 1

Floyd Nancy C · CIK 0001522601 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,832

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 14,832 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,832 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 14,832 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,832 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000082 · wk-form4_1717790843.xml · derivative · entry 2

O'Neil Charles · CIK 0001574207 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,068

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 22,068 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 22,068 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000077 · wk-form4_1717790775.xml · derivative · entry 1

Reed Kimberly A. · CIK 0001873931 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,567

Underlying: Common stock, par value $0.01 per share · 6,126 shares

Expires not disclosed

F1 · derivative.exercise_price: 9,567 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 9,567 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 9,567 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 9,567 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-24-000024 · wk-form4_1709587686.xml · derivative · entry 2

Santoroski Richard · CIK 0001428362 · EVP and Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 115,159

Underlying: Common stock, par value $0.01 per share · 28,500 shares

Expires not disclosed

F1 · derivative.exercise_price: 115,159 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 115,159 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 115,159 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 115,159 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

F4 · balance_after: Previously included in this total were 4,768 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F5 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000023 · wk-form4_1709587212.xml · derivative · entry 3

Nickey Susan D · CIK 0001839416 · EVP and Chief Client Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 136,131

Underlying: Common stock, par value $0.01 per share · 60,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.exercise_price: 136,131 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 136,131 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.exercise_date: 136,131 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 136,131 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F4 · derivative.expiration_date: N/A

F5 · balance_after: Previously included in this total were 10,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F6 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000022 · wk-form4_1709586742.xml · derivative · entry 2

Melko Charles · CIK 0001700743 · CAO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 62,345

Underlying: Common stock, par value $0.01 per share · 21,038 shares

Expires not disclosed

F1 · derivative.exercise_price: 62,345 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 62,345 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 62,345 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 62,345 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

F4 · balance_after: Previously included in this total were 2,388 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F5 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000021 · wk-form4_1709586351.xml · derivative · entry 3

Chuslo Steven · CIK 0001574201 · EVP AND CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 230,004

Underlying: Common stock, par value $0.01 per share · 52,200 shares

Expires not disclosed

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.exercise_price: 230,004 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 230,004 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.exercise_date: 230,004 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 230,004 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F4 · derivative.expiration_date: N/A

F5 · balance_after: Previously included in this total were 12,800 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F6 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000034 · wk-form4_1709645006.xml · derivative · entry 2

Pangburn Marc T. · CIK 0001839282 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo, LLC

Disclosed balance after: 179,124

Underlying: Common stock, par value $0.01 per share · 73,500 shares

Expires not disclosed

F1 · derivative.exercise_price: 179,124 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 179,124 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 179,124 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 179,124 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

F4 · balance_after: Previously included in this total were 10,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F5 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000032 · wk-form4_1709644465.xml · derivative · entry 5

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 778,117

Underlying: Common stock, par value $0.01 per share · 90,000 shares

Expires not disclosed

F4 · derivative.exercise_price: 778,117 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 778,117 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F5 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F4 · derivative.exercise_date: 778,117 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 778,117 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F5 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F6 · derivative.expiration_date: N/A

F7 · balance_after: Previously included in this total were 70,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F8 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000033 · wk-form4_1709644475.xml · derivative · entry 2

Lipson Jeffrey · CIK 0001769141 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 587,981

Underlying: Common stock, par value $0.01 per share · 258,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F2 · derivative.exercise_price: 587,981 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 587,981 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: 587,981 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 587,981 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F3 · derivative.expiration_date: N/A

F4 · balance_after: Previously included in this total were 20,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F5 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000031 · wk-form4_1709644454.xml · derivative · entry 3

Rose Nathaniel · CIK 0001574203 · EVP & CIO

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 296,417

Underlying: Common stock, par value $0.01 per share · 63,000 shares

Expires not disclosed

F2 · derivative.exercise_price: 296,417 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 296,417 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F3 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F2 · derivative.exercise_date: 296,417 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 296,417 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F3 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F4 · derivative.expiration_date: N/A

F5 · balance_after: Previously included in this total were 20,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F6 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000027 · wk-form4_1709644258.xml · derivative · entry 2

McMahon Daniel K. · CIK 0001645426 · EVP

10b5-1 filing: No plan indicated

Ownership: Indirect · By HASI Management HoldCo LLC

Disclosed balance after: 205,393

Underlying: Common stock, par value $0.01 per share · 22,404 shares

Expires not disclosed

F1 · derivative.exercise_price: 205,393 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 205,393 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 205,393 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 205,393 long-term incentive plan units ("LTIP Units") in the Partnership. The LTIP Units were granted to the Reporting Person under the Issuer's 2013 Equity Incentive Plan, as amended, and the Issuer's 2022 Equity Incentive Plan.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

F4 · balance_after: Previously included in this total were 15,000 LTIP Units which did not vest, as certain performance targets for the performance period ended December 31, 2023 were not met.

F5 · ownership.nature: These LTIP Units are held by HASI Management HoldCo LLC ("HoldCo LLC"). The Reporting Person is a member of HoldCo LLC. The LTIP Units reported represent only the number of LTIP Units in which the Reporting Person has a pecuniary interest in accordance with his proportionate interest in HoldCo LLC. The Reporting Person is voluntarily reporting his proportionate interest in HoldCo LLC's ownership of LTIP Units. The Reporting Person disclaims beneficial ownership other than to the extent of his pecuniary interest.

SEC source: 0001561894-24-000012 · wk-form4_1708549749.xml · nonDerivative · entry 3

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Chesapeake Power LLC

Disclosed balance after: 0

SEC source: 0001561894-24-000012 · wk-form4_1708549749.xml · nonDerivative · entry 2

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Chesapeake Power LLC

Disclosed balance after: 34,836

F1 · kind: 32,825 shares of Common stock, par value $0.01 per share was transferred from Chesapeake Power LLC to the Jeffrey W. Eckel Revocable Trust on February 20, 2024.

F3 · balance_after: These shares are held by Chesapeake Power, LLC, of which Jeffrey W. Eckel is the sole member.

SEC source: 0001561894-24-000012 · wk-form4_1708549749.xml · nonDerivative · entry 1

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jeffrey W. Eckel Revocable Trust

Disclosed balance after: 582,719

F1 · kind: 32,825 shares of Common stock, par value $0.01 per share was transferred from Chesapeake Power LLC to the Jeffrey W. Eckel Revocable Trust on February 20, 2024.

F2 · balance_after: These shares are held by the Jeffrey W. Eckel Revocable Trust, of which Jeffrey W. Eckel is the sole trustee and beneficiary.

SEC source: 0001561894-23-000116 · wk-form4_1700514734.xml · nonDerivative · entry 1

Armbrister Clarence D · CIK 0001850745 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 420

SEC source: 0001561894-23-000105 · wf-form4_169264929491256.xml · nonDerivative · entry 1

Brenner Teresa · CIK 0001671844 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,360

SEC source: 0001561894-23-000104 · wf-form4_169264923142754.xml · nonDerivative · entry 1

Santoroski Richard · CIK 0001428362 · EVP and Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,500

SEC source: 0001561894-23-000099 · wf-form4_169264894681513.xml · nonDerivative · entry 1

OSBORNE RICHARD J · CIK 0001236214 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,645

SEC source: 0001561894-23-000107 · wf-form4_169265025586998.xml · nonDerivative · entry 2

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Indirect · By grandson

Disclosed balance after: 2,887

F2 · balance_after: The reporting person acts as custodian for his grandson under the Uniform Gifts to Minors Act. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

SEC source: 0001561894-23-000107 · wf-form4_169265025586998.xml · nonDerivative · entry 1

Eckel Jeffrey · CIK 0001574200 · Director · Executive Chair

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,162

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $19.76 to $19.77, inclusive, on August 21, 2023. The reporting personundertakes to provide Hannon Armstrong Sustainable Infrastructure Capital, Inc., any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full informationregarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001561894-23-000106 · wf-form4_169264935390784.xml · nonDerivative · entry 1

Lipson Jeffrey · CIK 0001769141 · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,925

SEC source: 0001561894-23-000100 · wf-form4_169264900501243.xml · nonDerivative · entry 1

Pangburn Marc T. · CIK 0001839282 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 53,291

SEC source: 0001561894-23-000103 · wf-form4_169264917182763.xml · nonDerivative · entry 1

Chuslo Steven · CIK 0001574201 · EVP AND CHIEF LEGAL OFFICER

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 226,561

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.91 to $20.94, inclusive, on August 18, 2023. The reporting person undertakes to provide Hannon Armstrong Sustainable Infrastructure Capital, Inc., any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

SEC source: 0001561894-23-000102 · wf-form4_169264910966834.xml · nonDerivative · entry 2

McMahon Daniel K. · CIK 0001645426 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 118,625

SEC source: 0001561894-23-000102 · wf-form4_169264910966834.xml · nonDerivative · entry 1

McMahon Daniel K. · CIK 0001645426 · EVP

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 113,625

SEC source: 0001561894-23-000101 · wf-form4_169264905518493.xml · nonDerivative · entry 1

Rose Nathaniel · CIK 0001574203 · EVP & CIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 163,164

SEC source: 0001561894-23-000098 · wf-form4_169264885704652.xml · nonDerivative · entry 1

Melko Charles · CIK 0001700743 · CAO & Treasurer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,563

SEC source: 0001561894-23-000063 · wf-form4_167910245134816.xml · derivative · entry 1

Armbrister Clarence D · CIK 0001850745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,706

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 8,706 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 8,706 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 8,706 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 8,706 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000065 · wf-form4_167910252155687.xml · derivative · entry 2

Brenner Teresa · CIK 0001671844 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,942

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000061 · wf-form4_167910237307127.xml · derivative · entry 2

ARDISANA LIZABETH A · CIK 0001283890 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,122

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 5,122 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 5,122 long-term incentive plan units("LTIP Units") in the Partnership.

F2 · derivative.exercise_price: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 5,122 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon the vesting and conversion of 5,122 long-term incentive plan units("LTIP Units") in the Partnership.

F2 · derivative.exercise_date: Vested LTIP Units, after achieving parity with OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")), are eligible to be converted into OP Units on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement. Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000059 · wf-form4_167910205158530.xml · derivative · entry 2

OSBORNE RICHARD J · CIK 0001236214 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,942

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000055 · wf-form4_167910186928495.xml · derivative · entry 2

OSGOOD STEVEN G · CIK 0001306273 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Steven G Osgood TTEE Steven G Osgood TR U/A DTD 09 09 2019

Disclosed balance after: 27,297

Underlying: Common stock, par value $0.01 per share · 7,973 shares

Expires not disclosed

F1 · derivative.exercise_price: 27,297 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 27,297 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 27,297 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 27,297 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F3 · derivative.expiration_date: N/A

F4 · ownership.nature: These LTIP Units are held Steven G Osgood TREE Steven G Osgood TR U/A DTD 09/09/2019, of which Mr. Osgood is the trustee. Ms. Osgood possesses the voting and investment power with respect to the shares of LTIP Units held by the Trust.

SEC source: 0001561894-23-000069 · wf-form4_167910274383300.xml · derivative · entry 1

Floyd Nancy C · CIK 0001522601 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,706

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 8,706 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 8,706 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 8,706 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 8,706 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000067 · wf-form4_167910265140827.xml · derivative · entry 2

Eckhart Michael T. · CIK 0001783847 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,317

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 14,317 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,317 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 14,317 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 14,317 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000071 · wf-form4_167910283249296.xml · derivative · entry 2

O'Neil Charles · CIK 0001574207 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,942

Underlying: Common stock, par value $0.01 per share · 4,129 shares

Expires not disclosed

F1 · derivative.exercise_price: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to themarket value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 15,942 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 15,942 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to themarket value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"),or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000057 · wf-form4_167910196678969.xml · derivative · entry 1

Reed Kimberly A. · CIK 0001873931 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,441

Underlying: Common stock, par value $0.01 per share · 3,441 shares

Expires not disclosed

F1 · derivative.exercise_price: 3,441 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 3,441 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_price: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F1 · derivative.exercise_date: 3,441 units of limited partner interest ("OP Units") in Hannon Armstrong Sustainable Infrastructure, LP (the "Partnership") are issuable upon vesting and the conversion of 3,441 long-term incentive plan units ("LTIP Units") in the Partnership. Vested LTIP Units, after achieving parity with OP Units, are eligible to be converted into OP Units (as described in the Partnership's Amended and Restated Agreement of Limited Partnership (the "Partnership Agreement")) on a one-for-one basis upon the satisfaction of conditions set forth in the Partnership Agreement.

F2 · derivative.exercise_date: Upon conversion of LTIP Units into OP Units, the Reporting Person will have the right to cause the Partnership to redeem a portion of the Reporting Person's OP Units for cash in an amount equal to the market value (as defined in the Partnership Agreement) of an equivalent number of shares of common stock, par value $0.01 per share, of Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Issuer"), or at the Issuer's option, shares of the Issuer's common stock on a one-for-one basis, subject to certain adjustments.

F3 · derivative.expiration_date: N/A

SEC source: 0001561894-23-000051 · wf-form4_167900114133577.xml · nonDerivative · entry 1

Rose Nathaniel · CIK 0001574203 · EVP & CIO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,164

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $24.00 to $24.22, inclusive on March 16, 2023. The reporting person undertakes to provide Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

SEC source: 0001561894-23-000053 · wf-form4_167900706035342.xml · nonDerivative · entry 1

Nickey Susan D · CIK 0001839416 · EVP and Chief Client Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Susan D Nickey Revocable Trust DTD 11/19/2021

Disclosed balance after: 58,245

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $23.88 to $23.92, inclusive on March 16, 2023. The reporting person undertakes to provide Hannon Armstrong Sustainable Infrastructure Capital, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in this footnote.

F2 · ownership.nature: These Shares or LTIP Units are held by the Susan D Nickey Revocable Trust DTD 11/19/2021, of which Ms. Nickey is the trustee. Ms. Nickey possesses the voting and investment power with respect to the Shares or LTIP Units held by the Trust.

SEC source: 0001561894-23-000049 · wf-form4_167899774134270.xml · nonDerivative · entry 1

Lipson Jeffrey · CIK 0001769141 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,925