Ameresco (NYSE: AMRC) director completes 1,355-share sale under 10b5-1 plan

Rhea-AI Filing Summary

Ameresco, Inc. director Nickolas Stavropoulos exercised options to acquire 1,355 shares of Class A Common Stock at $16.33 per share and sold 1,355 shares at $34.00 per share on May 15, 2026. The sale was executed under a pre-arranged Rule 10b5-1 trading plan. Following these transactions, he holds 14,111 Class A shares directly and 6,000 stock options.

Insider Trade Summary 10b5-1

Net Seller: 1,355 shares ($46,070)

Net Sell 3 txns

Insider STAVROPOULOS NICKOLAS

Role null

Sold 1,355 shs ($46K)

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to purchase)	1,355	$0.00	--
Exercise	Class A Common Stock	1,355	$16.33	$22K
Sale	Class A Common Stock	1,355	$34.00	$46K

Holdings After Transaction: Stock Option (right to purchase) — 6,000 shares (Direct, null); Class A Common Stock — 15,466 shares (Direct, null)

Footnotes (1)

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 8, 2025. Of the shares subject to the option, 20% vest on April 24, 2020, and the remainder vest in four equal installments on each of the subsequent four anniversaries of such date.

Key Figures

Shares sold: 1,355 shares Sale price: $34.00 per share Shares acquired via option exercise: 1,355 shares +5 more

8 metrics

Shares sold 1,355 shares Class A Common Stock sold in open market on May 15, 2026

Sale price $34.00 per share Open-market sale of 1,355 Class A shares

Shares acquired via option exercise 1,355 shares Class A Common Stock acquired through option exercise

Option exercise price $16.33 per share Strike price for exercised stock option

Shares held after transactions 14,111 shares Direct Class A Common Stock holdings post-transaction

Options outstanding after exercise 6,000 options Stock options remaining following derivative transaction

Net share change from buy/sell -1,355 shares Net-buy-sell direction classified as net-sell

Option expiration date April 23, 2029 Expiration for the reported stock option grant

Key Terms

Rule 10b5-1 trading plan, Stock Option (right to purchase), derivative security, open-market sale

4 terms

Rule 10b5-1 trading plan regulatory

"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Stock Option (right to purchase) financial

"Stock Option (right to purchase) with 1,355 underlying Class A Common Stock shares"

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

open-market sale financial

"transaction_action: open-market sale of Class A Common Stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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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^*

STAVROPOULOS NICKOLAS

(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		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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	05/15/2026		M		1,355	A	$16.33	15,466	D
Class A Common Stock	05/15/2026		S(1)		1,355	D	$34	14,111	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)	$16.33	05/15/2026		M			1,355	(2)	04/23/2029	Class A Common Stock	1,355	$0	6,000	D

Explanation of Responses:

1. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 8, 2025.

2. Of the shares subject to the option, 20% vest on April 24, 2020, and the remainder vest in four equal installments on each of the subsequent four anniversaries of such date.

Remarks:

	/s/ David J. Corrsin, attorney-in-fact	05/18/2026
	** 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)

FAQ

What insider transactions did Ameresco (AMRC) director Nickolas Stavropoulos report?

Director Nickolas Stavropoulos reported exercising options for 1,355 Ameresco Class A shares at $16.33 and selling 1,355 shares at $34.00 on May 15, 2026. These moves reflect an exercise-and-sell pattern combining option conversion with an open-market sale.

At what prices did the Ameresco (AMRC) director exercise and sell shares?

Stavropoulos exercised stock options at a strike price of $16.33 per share and sold 1,355 Ameresco Class A shares at $34.00 per share. The filing classifies the sale as an open-market transaction, providing clear pricing for both the option exercise and the share sale.

How many Ameresco (AMRC) shares does the director hold after these transactions?

After the reported transactions, Stavropoulos directly holds 14,111 Ameresco Class A Common shares. He also holds 6,000 stock options that remain outstanding. These figures show his continuing equity exposure following the exercise-and-sell activity disclosed for May 15, 2026.

Were the Ameresco (AMRC) insider sales made under a Rule 10b5-1 plan?

Yes. The filing states the sales were effected under a Rule 10b5-1 trading plan adopted on September 8, 2025. Such plans pre-schedule trades, indicating the timing of the May 2026 sale was set in advance rather than being a discretionary market-timing decision.

What stock option details are disclosed for the Ameresco (AMRC) director?

The filing shows a stock option for 1,355 underlying Ameresco shares with a $16.33 exercise price and an expiration date of April 23, 2029. A vesting footnote explains that 20% vested on April 24, 2020, with the remainder vesting annually over four years.