Ameresco CEO exercises 6,250 RSUs for shares

Ameresco, Inc. (AMRC) reports that Chief Executive Officer and director George P. Sakellaris exercised 6,250 Restricted Stock Units (RSUs) on September 10, 2026, receiving 6,250 shares of Class A Common Stock at a stated price of $0.00 per share.

Rhea-AI Filing Summary

Ameresco, Inc. (AMRC) reports that Chief Executive Officer and director George P. Sakellaris exercised 6,250 Restricted Stock Units (RSUs) on September 10, 2026, receiving 6,250 shares of Class A Common Stock at a stated price of $0.00 per share.

Following these transactions, he holds 1,019,847 Class A shares directly, plus indirect holdings reported as 1,100,000 shares by a trust for his children and 200,000 shares by his spouse, for which he disclaims beneficial ownership. The RSUs, granted at various dates, vest over two years with 25% vesting on each 6‑month anniversary of the grant date, and each RSU represents a contingent right to one Ameresco Class A share.

Insider Trade Summary

6,250 shares exercised/converted

Exercise 4 txns

Insider Sakellaris George P

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit F3, F4, F5	6,250	$0.00	$0.00
Exercise	Class A Common Stock	6,250	$0.00	$0.00
holding	Class A Common Stock F1	--	--	--
holding	Class A Common Stock F2	--	--	--

Holdings After Transaction: Restricted Stock Unit — 11,250 contracts (Direct); Class A Common Stock — 1,019,847 shares (Direct); Class A Common Stock — 1,100,000 shares (Indirect, By trust); Class A Common Stock — 200,000 shares (Indirect, By spouse)

Footnotes (5)

1. F1. Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household. The reporting person may be deemed the beneficial owner of the shares held by the trust. The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose.
2. F2. 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.
3. F3. Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock").
4. F4. Each RSUs represents a contingent right to receive one share of Common Stock and vest over two years with 25% vesting on each 6-month anniversary of the applicable grant date.
5. F5. Represents RSUs granted at various dates.

Key Figures

RSUs exercised: 6,250 RSUs Direct Class A holdings after transaction: 1,019,847 shares Indirect trust holdings: 1,100,000 shares +3 more

6 metrics

RSUs exercised 6,250 RSUs Converted into 6,250 shares of Ameresco Class A Common Stock on September 10, 2026

Direct Class A holdings after transaction 1,019,847 shares Ameresco Class A Common Stock held directly by George P. Sakellaris after September 10, 2026 transaction

Indirect trust holdings 1,100,000 shares Ameresco Class A shares held by a trust for the reporting person’s children; beneficial ownership disclaimed

Indirect spouse holdings 200,000 shares Ameresco Class A shares held by spouse; beneficial ownership disclaimed

RSU vesting schedule 25% every 6 months over 2 years Vesting pattern for the RSUs referenced, from the applicable grant dates

RSUs remaining after transaction 11,250 RSUs Total RSUs reported following the September 10, 2026 exercise

Key Terms

Restricted Stock Unit, beneficial owner, Section 16, disclaims beneficial ownership

4 terms

Restricted Stock Unit financial

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

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.

beneficial owner regulatory

"The reporting person may be deemed the beneficial owner of the shares"

A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.

Section 16 regulatory

"for purposes of Section 16 or for any other purpose"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

disclaims beneficial ownership regulatory

"The reporting person disclaims beneficial ownership of the shares held by the trust"

FAQ

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

What insider transaction did AMRC CEO George P. Sakellaris report on September 10, 2026?

He exercised 6,250 Restricted Stock Units, receiving 6,250 Ameresco Class A Common shares at a stated price of $0.00 per share, as part of an RSU award that converts one-for-one into Class A shares.

How many AMRC Class A shares does the CEO hold directly after this Form 4?

After the RSU exercise, George P. Sakellaris holds 1,019,847 shares of Ameresco Class A Common Stock directly, according to the reported post-transaction holdings on the Form 4 dated September 10, 2026.

What indirect Ameresco (AMRC) shareholdings are reported for the CEO and how are they treated?

The filing reports 1,100,000 AMRC shares held by a trust for his children and 200,000 shares held by his spouse. He may be deemed a beneficial owner but explicitly disclaims beneficial ownership of both positions.

How do the Ameresco RSUs held by the CEO vest and convert into shares?

Each RSU represents a contingent right to receive one Ameresco Class A share. The RSUs referenced vest over two years, with 25% vesting on each 6‑month anniversary of the applicable grant date, and were granted at various dates.

Was the AMRC CEO’s September 2026 transaction under a Rule 10b5-1 trading plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed (box unchecked), and the footnotes do not describe a 10b5-1 plan, so no trading plan is reported for these transactions.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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^*

Sakellaris George P

(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)

X	Director	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

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		6,250	A	$0	1,019,847	D
Class A Common Stock								1,100,000	I	By trust(1)
Class A Common Stock								200,000	I	By spouse(2)

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)	09/10/2026		M			6,250	(4)	(4)	Class A Common Stock	6,250	$0	11,250(5)	D

Explanation of Responses:

1. Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household. The reporting person may be deemed the beneficial owner of the shares held by the trust. The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose.

2. 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.

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

4. Each RSUs represents a contingent right to receive one share of Common Stock and vest over two years with 25% vesting on each 6-month anniversary of the applicable grant date.

5. 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)