X0306 4 2017-11-13 0 0001561894 Hannon Armstrong Sustainable Infrastructure Capital, Inc. HASI 0001574203 Rose Nathaniel 1906 TOWNE CENTRE BLVD. SUITE 370 ANNAPOLIS MD 21401 0 1 0 0 EVP & CIO Common stock, par value $0.01 per share 2017-11-13 4 S 0 8000 23.58 D 289506 D Common stock, par value $0.01 per share 10000 I By spouse This sale was effected pursuant to a Rule 10b5-1 trading plan, dated September 12, 2017. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.40 to $23.64, inclusive on November 13, 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 sold 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/ Nathaniel Rose 2017-11-15