[Form 4] Ameresco, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Ameresco, Inc. insider activity centers on spouse-held shares and RSU vesting. The spouse of EVP and General Counsel David Corrsin sold 50 shares of Class A Common Stock at $26.34 per share, under an automatic sell-to-cover instruction to pay withholding taxes on restricted stock unit vesting.

On the same date, 50 restricted stock units were converted into 50 shares of Class A Common Stock at a $0.00 exercise price, a non-market acquisition. After these transactions, Corrsin reports 20,471 shares held directly and 379 shares held indirectly by his spouse.

Insider Trade Summary 10b5-1

Net Seller: 50 shares ($1,317)

Net Sell 4 txns

Insider Corrsin David J

Role EVP and General Counsel

Sold 50 shs ($1K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	50	$26.34	$1K
Exercise	Restricted Stock Unit	50	$0.00	--
Exercise	Class A Common Stock	50	$0.00	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 379 shares (Indirect, By Spouse); Restricted Stock Unit — 150 shares (Indirect, By spouse); Class A Common Stock — 20,471 shares (Direct)

Footnotes (1)

1. The reporting person disclaims beneficial ownership of the shares held by his spouse, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's shares for purposes of Section 16 or for any other purpose. The shares were sold pursuant to an automatic sell-to-cover instruction signed March 8, 2023 solely to cover applicable withholding taxes in connection with the vesting of RSUs. Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock"). Each RSU vests over two years with 25% vesting on each 6-month anniversary of the applicable grant date.

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Form 4 Insider Transactions: What Each Field Means →

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).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Corrsin David J

(Last) (First) (Middle)

C/O AMERESCO, INC.

111 SPEEN STREET, SUITE 410

(Street)

FRAMINGHAM MA 01701

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Ameresco, Inc. [ AMRC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP and General Counsel

3. Date of Earliest Transaction (Month/Day/Year)
03/08/2026

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
Class A Common Stock	03/08/2026		M		50	A	$0	429	I	By Spouse(1)
Class A Common Stock	03/10/2026		S		50	D	$26.34(2)	379	I	By Spouse(1)
Class A Common Stock								20,471	D

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
Restricted Stock Unit	(3)	03/08/2026		M			50	(4)	(4)	Class A Common Stock	50	$0	150	I	By spouse(1)

Explanation of Responses:

1. The reporting person disclaims beneficial ownership of the shares held by his spouse, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's shares for purposes of Section 16 or for any other purpose.

2. The shares were sold pursuant to an automatic sell-to-cover instruction signed March 8, 2023 solely to cover applicable withholding taxes in connection with the vesting of RSUs.

3. Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock").

4. Each RSU vests over two years with 25% vesting on each 6-month anniversary of the applicable grant date.

Remarks:

	David J. Corrsin	03/10/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.