SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* Herron J Brendan (Last) (First) (Middle) 1906 TOWNE CENTRE BLVD. SUITE 370 (Street) ANNAPOLIS MD 21401 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Hannon Armstrong Sustainable Infrastructure Capital, Inc. [ HASI ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) EVP & CFO
	3. Date of Earliest Transaction (Month/Day/Year) 04/04/2018
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock, par value $0.01 per share	04/04/2018		A		19,038	A	$0(1)	257,228(2)	D
Common stock, par value $0.01 per share	04/04/2018		A		25,874	A	$0(3)	283,102(2)	D
Common stock, par value $0.01 per share	04/04/2018		A		51,752	A	$0(4)	334,854(2)	D
Common stock, par value $0.01 per share								5,000(5)	I	By spouse
Common stock, par value $0.01 per share								1,920(6)	I	By spouse as UTMA custodian for children

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On April 4, 2018, the reporting person was granted 19,038 shares of restricted Common Stock that were issued pursuant to the 2013 Hannon Armstrong Sustainable Infrastructure Capital Inc. Equity Incentive Plan, as amended (the "Plan"). The shares vest on May 15, 2019.

2. 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.

3. On April 4, 2018, the reporting person was granted 25,874 shares of restricted Common Stock that were issued pursuant to the Plan. The shares will vest in equal installments of one-third of the full amount on May 15, 2019, March 5, 2020 and March 5, 2021.

4. On April 4, 2018, the reporting person was awarded up to a maximum of 51,752 Restricted Stock Units ("RSUs") under the Plan, which represent the right to receive one share of Common Stock of the issuer for each RSU at vesting. The RSUs vest on March 5, 2021 if certain absolute and relative stockholder return targets are achieved on or prior to such date. The number of RSUs to be awarded to the reporting person range from zero to 51,752 based on the Company's performance relative to the return targets. The RSUs reported on this Form 4 assume the reporting person receives the maximum possible grant. Dividend equivalents will accrue on the RSUs from the grant date, but the reporting person is not entitled to receive the dividend equivalents until the RSUs vest. The grant is being reported here for informational purposes only.

5. These shares are held by the reporting person's spouse. The reporting person disclaims ownership other than to the extent of his pecuniary interest.

6. 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.

Remarks:

	/s/ J. Brendan Herron	04/06/2018
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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