X0306 4 2014-12-16 0 0001561894 Hannon Armstrong Sustainable Infrastructure Capital, Inc. HASI 0001574201 Chuslo Steven 1906 TOWNE CENTRE BLVD. SUITE 370 ANNAPOLIS MD 21401 0 1 0 0 GENERAL COUNSEL & EVP Common stock, par value $0.01 per share 2014-12-16 4 A 0 3000 13.7372 A 150458 D Common stock, par value $0.01 per share 4370 I See Footnote The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $13.69 to $13.80, inclusive. 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 significant other. The reporting person disclaims ownership other than to the extent of his pecuniary interest. /s/ Steven Chuslo 2014-12-18