X0306 4 2016-12-31 0 0001561894 Hannon Armstrong Sustainable Infrastructure Capital, Inc. HASI 0001574220 Herron J Brendan 1906 TOWNE CENTRE BLVD. SUITE 370 ANNAPOLIS MD 21401 0 1 0 0 EVP & CFO Common stock, par value $0.01 per share 2016-12-31 4 F 0 11118 19.04 D 160745 D Common stock, par value $0.01 per share 5000 I By spouse Common stock, par value $0.01 per share 1920 I By spouse as UTMA custodian for children Consists of shares of Common Stock withheld by the issuer, with approval of the issuer's Board of Directors, in order to satisfy the tax withholding obligation of the reporting person in connection with the vesting of 22,001 shares of Common Stock. Represents the opening price of the Common Stock on December 30, 2016. Excludes 135,938 limited partnership units in Hannon Armstrong Sustainable Infrastructure, L.P., the issuer's operating partnership subsidiary, held by the reporting person, previously reported by the reporting person, which are redeemable for cash, or at the option of the issuer, for shares of Common Stock of the issuer on a one-for-one basis. These shares are held by the reporting person's spouse. The reporting person disclaims beneficial ownership other than to the extent of his pecuniary interest. These shares are held by the reporting person's spouse as custodian for the reporting person's three children under the Uniform Transfers to Minors Act. The reporting person disclaims beneficial ownership other than to the extent of his pecuniary interest. /s/ J. Brendan Herron 2017-01-04