Ameresco CFO receives 1,625 shares from RSUs

Ameresco’s CFO received 1,625 Class A shares from RSU vesting and now holds 3,291 shares plus 3,375 RSUs directly.

Rhea-AI Filing Summary

Ameresco, Inc. (AMRC) Executive Vice President, Chief Financial Officer and Chief Accounting Officer Mark Chiplock reported the vesting and conversion of 1,625 Restricted Stock Units into 1,625 shares of Class A Common Stock on September 10, 2026, at a stated price of $0.00 per share. Each RSU represents a contingent right to receive one share of Class A Common Stock and vests over two years, with 25% vesting on each six‑month anniversary of the grant date. Following these transactions, Chiplock holds 3,291 shares of Class A Common Stock and 3,375 RSUs directly, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

1,625 shares exercised/converted

Exercise 2 txns

Insider Chiplock Mark

Role EVP, CFO & CAO

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit F1, F2, F3	1,625	$0.00	$0.00
Exercise	Class A Common Stock	1,625	$0.00	$0.00

Holdings After Transaction: Restricted Stock Unit — 3,375 contracts (Direct); Class A Common Stock — 3,291 shares (Direct)

Footnotes (3)

1. F1. Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock").
2. F2. Each RSU vests over two years with 25% vesting on each 6-month anniversary of the applicable grant date.
3. F3. Represents RSUs granted at various dates.

Key Figures

RSUs converted: 1,625 units Shares received: 1,625 shares Common Stock holdings after transaction: 3,291 shares +3 more

6 metrics

RSUs converted 1,625 units Restricted Stock Units converted into Class A Common Stock on September 10, 2026

Shares received 1,625 shares Class A Common Stock issued upon RSU conversion on September 10, 2026

Common Stock holdings after transaction 3,291 shares Direct Class A Common Stock owned by Mark Chiplock after the reported transactions

RSU holdings after transaction 3,375 units Direct RSU balance following the RSU conversion reported

RSU vesting schedule 25% every 6 months over 2 years Vesting pattern for each RSU grant described in the footnotes

Reported exercise price $0.00 per share Stated per‑share price for the RSU conversion into Class A Common Stock

Key Terms

Restricted Stock Unit, Class A Common Stock, contingent right, vests over two years

4 terms

Restricted Stock Unit financial

"Each RSU represents a contingent right to receive one share of Ameresco"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

Class A Common Stock financial

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

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

contingent right financial

"Each RSU represents a contingent right to receive one share of Ameresco"

vests over two years financial

"Each RSU vests over two years with 25% vesting on each 6-month anniversary"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did AMRC executive Mark Chiplock report in this Form 4?

He reported the vesting and conversion of 1,625 Restricted Stock Units into 1,625 shares of Ameresco Class A Common Stock on September 10, 2026, at a stated price of $0.00 per share. No open‑market purchase or sale of shares was reported.

How many Ameresco (AMRC) shares does Mark Chiplock hold after this Form 4?

After the reported transactions, Mark Chiplock holds 3,291 shares of Ameresco Class A Common Stock directly and 3,375 Restricted Stock Units directly, as disclosed in the filing’s post‑transaction holdings fields.

How many RSUs vested for Ameresco (AMRC) CFO Mark Chiplock?

A total of 1,625 Restricted Stock Units vested and were converted into 1,625 shares of Ameresco Class A Common Stock on September 10, 2026, with each RSU representing a contingent right to receive one share of Class A Common Stock.

What is the vesting schedule of the Ameresco (AMRC) RSUs reported in this Form 4?

The filing states that each RSU vests over two years, with 25% vesting on each six‑month anniversary of the applicable grant date. The reported RSU holdings represent grants made on various dates that follow this vesting pattern.

Was a Rule 10b5-1 trading plan involved in the Ameresco (AMRC) Form 4 transactions?

No. The Form 4’s Rule 10b5‑1 checkbox is not checked, and there is no footnote stating that the transactions were made under a Rule 10b5‑1 or other pre‑arranged trading plan.

Did Ameresco (AMRC) CFO Mark Chiplock sell any shares in the market in this Form 4?

No market sale is reported. The Form 4 shows an exercise/conversion of 1,625 RSUs into 1,625 shares of Class A Common Stock at a stated price of $0.00 per share, with no separate sale transaction listed.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/14/2026 - 04:46 PM Accepted by SEC EDGAR 09/14/2026 - 04:42 PM Learn about SEC filing dates

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).

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^*

Chiplock Mark

(Last) (First) (Middle)

C/O AMERESCO, INC.

111 SPEEN STREET, SUITE 410

(Street)

FRAMINGHAM MASSACHUSETTS 01701

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	EVP, CFO & CAO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	09/10/2026		M		1,625	A	$0	3,291	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	(1)	09/10/2026		M			1,625	(2)	(2)	Class A Common Stock	1,625	$0	3,375(3)	D

Explanation of Responses:

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

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

3. Represents RSUs granted at various dates.

Remarks:

	/s/ John W. Pickett, attorney-in-fact	09/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)