Ameresco's Debra L. Angelico reports 132-share holding

The interim PAO’s reported option and restricted-stock-unit positions have grant-specific vesting schedules, several conditioned on continued service.

Rhea-AI Filing Summary

Ameresco, Inc. Interim PAO Debra L. Angelico reported direct holdings dated September 25, 2026: 132 shares of Class A Common Stock, five stock-option positions covering Class A shares, and restricted stock units for 65 and 375 shares. The options have exercise prices of $95.31, $59.88, $21.13, $26.36 and $23.93, respectively. The option and RSU footnotes describe grant-specific vesting schedules; several require continued service.

Insider Trade Summary

8 transactions reported

Mixed 8 txns

Insider Angelico Debra L

Role Interim PAO

Type	Security	Shares	Price	Value
holding	Stock Option (right to purchase) F1	--	--	--
holding	Stock Option (right to purchase) F2	--	--	--
holding	Stock Option (right to purchase) F3	--	--	--
holding	Stock Option (right to purchase) F4	--	--	--
holding	Stock Option (right to purchase) F5	--	--	--
holding	Restricted Stock Unit F7, F6	--	--	--
holding	Restricted Stock Unit F7, F6	--	--	--
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Stock Option (right to purchase) — 21,000 contracts (Direct); Restricted Stock Unit — 440 contracts (Direct); Class A Common Stock — 132 shares (Direct)

Footnotes (7)

1. F1. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of November 4, 2021 over a period of five years assuming continued service through the vesting date.
2. F2. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of May 5, 2022 over a period of five years assuming continued service through the vesting date.
3. F3. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of March 8, 2024 over a period of five years assuming continued service through the vesting date.
4. F4. 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 assuming continued service through the vesting date.
5. F5. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of September 8, 2026 over a period of five years.
6. F6. Each RSU vests over two years with 25% vesting on each 6-month anniversary of the applicable grant date assuming continued service through the vesting date.
7. F7. Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock").

Key Figures

Direct Class A Common Stock: 132 shares Option underlying shares and exercise price: 3,000 shares at $95.31 per share Option underlying shares and exercise price: 5,000 shares at $59.88 per share +5 more

8 metrics

Direct Class A Common Stock 132 shares Reported holding dated September 25, 2026

Option underlying shares and exercise price 3,000 shares at $95.31 per share Direct stock option expiring November 3, 2031

Option underlying shares and exercise price 5,000 shares at $59.88 per share Direct stock option expiring May 4, 2032

Option underlying shares and exercise price 4,000 shares at $21.13 per share Direct stock option expiring March 7, 2034

Option underlying shares and exercise price 4,000 shares at $26.36 per share Direct stock option expiring March 9, 2036

Option underlying shares and exercise price 5,000 shares at $23.93 per share Direct stock option expiring September 7, 2036

Restricted Stock Units 65 shares Direct position; expiration date March 10, 2027

Restricted Stock Units 375 shares Direct position; expiration date March 10, 2028

Key Terms

Stock Option (right to purchase), Restricted Stock Unit, contingent right to receive one share

3 terms

Stock Option (right to purchase) financial

"Stock Option (right to purchase)"

Restricted Stock Unit financial

"Each RSU vests over two years"

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.

contingent right to receive one share financial

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

FAQ

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

What holdings did AMRC Interim PAO Debra L. Angelico report?

Debra L. Angelico, Ameresco’s Interim PAO, reported direct holdings dated September 25, 2026: 132 Class A Common Stock shares, options covering 3,000, 5,000, 4,000, 4,000 and 5,000 underlying shares, and restricted stock units for 65 and 375 shares.

How do Debra L. Angelico’s AMRC restricted stock units vest?

Each RSU vests over two years, with 25% vesting on each six-month anniversary of its applicable grant date, assuming continued service through the vesting date.

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

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Available on EDGAR 10/01/2026 - 05:49 PM Accepted by SEC EDGAR 10/01/2026 - 05:48 PM Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Angelico Debra L

(Last) (First) (Middle)

C/O AMERESCO, INC.

111 SPEEN STREET SUITE 410

(Street)

FRAMINGHAM MASSACHUSETTS 01701

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/25/2026

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

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Interim PAO

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	132	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to purchase)	(1)	11/03/2031	Class A Common Stock	3,000	$95.31	D
Stock Option (right to purchase)	(2)	05/04/2032	Class A Common Stock	5,000	$59.88	D
Stock Option (right to purchase)	(3)	03/07/2034	Class A Common Stock	4,000	$21.13	D
Stock Option (right to purchase)	(4)	03/09/2036	Class A Common Stock	4,000	$26.36	D
Stock Option (right to purchase)	(5)	09/07/2036	Class A Common Stock	5,000	$23.93	D
Restricted Stock Unit	(6)	03/10/2027(6)	Class A Common Stock	65	(7)	D
Restricted Stock Unit	(6)	03/10/2028(6)	Class A Common Stock	375	(7)	D

Explanation of Responses:

1. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of November 4, 2021 over a period of five years assuming continued service through the vesting date.

2. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of May 5, 2022 over a period of five years assuming continued service through the vesting date.

3. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of March 8, 2024 over a period of five years assuming continued service through the vesting date.

4. 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 assuming continued service through the vesting date.

5. Of the shares subject to the option, 20% vest on each of anniversary of the grant date of September 8, 2026 over a period of five years.

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

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

Remarks:

	/s/ John W. Pickett, attorney-in-fact	10/01/2026
	** 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 5 (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 3: SEC 1473 (03-26)