X0306 4 2017-03-02 0 0001561894 Hannon Armstrong Sustainable Infrastructure Capital, Inc. HASI 0001574205 Wooten M Rhem 1906 TOWNE CENTRE BLVD. SUITE 370 ANNAPOLIS MD 21401 0 1 0 0 EVP Common stock, par value $0.01 per share 2017-03-02 4 P 0 490 20.00 A 29345 I By spouse Common stock, par value $0.01 per share 237512 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.00 to $20.01, inclusive on March 2, 2017. 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. These shares are held by the reporting person's spouse. The reporting person disclaims ownership other than to the extent of his pecuniary interest. /s/ M. Rhem Wooten 2017-03-03