Ameresco (NYSE: AMRC) insider logs small tax sale and new equity awards

Rhea-AI Filing Summary

Ameresco, Inc. officer Louis P. Maltezos reported routine equity compensation and a small related share sale. He received stock options for 20,000 shares of Class A Common Stock at an exercise price of $26.36 per share and 5,000 restricted stock units, each RSU representing one share. He also had 875 RSUs convert into 875 shares of Class A Common Stock. To cover withholding taxes tied to RSU vesting, an automatic instruction sold 306 shares on the market at $25.31 per share. After these transactions, he directly holds 32,095 Class A shares, 6,750 RSUs, and 20,000 options.

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

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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^*

Maltezos Louis P

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President-Central&West USA Can

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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	03/10/2026		M		875	A	$0	32,401	D
Class A Common Stock	03/12/2026		S		306	D	$25.31(1)	32,095	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
Stock Option (right to purchase)	$26.36	03/10/2026		A		20,000		(2)	(2)	Class A Common Stock	20,000	$0	20,000	D
Restricted Stock Unit	(3)	03/10/2026		A		5,000		(4)	(4)	Class A Common Stock	5,000	$0	7,625	D
Restricted Stock Unit	(3)	03/10/2026		M			875	(4)	(4)	Class A Common Stock	875	$0	6,750	D

Explanation of Responses:

1. The shares were sold pursuant to an automatic sell-to-cover instruction signed September 5, 2025 solely to cover applicable withholding taxes in connection with the vesting of RSUs.

2. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of March 10, 2026 over a period of five years.

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:

	/s/ David J. Corrsin, attorney-in-fact	03/12/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did Ameresco (AMRC) officer Louis P. Maltezos report?

Louis P. Maltezos reported routine equity compensation and a small related share sale. He received 20,000 stock options, 5,000 restricted stock units, 875 shares from RSU conversion, and sold 306 shares to cover RSU tax withholding.

How many Ameresco (AMRC) shares did Louis P. Maltezos sell and at what price?

He sold 306 shares of Ameresco Class A Common Stock at $25.31 per share. The sale was executed under an automatic sell-to-cover instruction designed solely to pay applicable withholding taxes from vesting restricted stock units.

What new stock options did Louis P. Maltezos receive from Ameresco (AMRC)?

He received stock options covering 20,000 shares of Ameresco Class A Common Stock at an exercise price of $26.36 per share. According to the terms, 20% of these options vest on each anniversary of the March 10, 2026 grant date over five years.

What restricted stock unit (RSU) awards did Ameresco (AMRC) grant Louis P. Maltezos?

Ameresco granted him 5,000 restricted stock units, each representing one share of Class A Common Stock. These RSUs vest over two years, with 25% vesting on each six-month anniversary of the applicable grant date, subject to the award’s conditions.

How many Ameresco (AMRC) shares and RSUs does Louis P. Maltezos hold after these transactions?

Following the reported transactions, he directly holds 32,095 shares of Ameresco Class A Common Stock. In addition, he holds 6,750 restricted stock units and 20,000 stock options, reflecting his ongoing equity-based compensation position with the company.

Was the Ameresco (AMRC) share sale by Louis P. Maltezos discretionary or tax-related?

The 306-share sale was tax-related, not a discretionary liquidation. It was executed under an automatic sell-to-cover instruction signed to pay withholding taxes associated with the vesting of restricted stock units granted to Maltezos.