SEC Form 4 · accession 0001628280-26-061871

Ameresco, Inc. · AMRC

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Executive Officer · Director · 10% Owner

Period of report

Sep 10, 2026

Accepted (ET)

Sep 14, 2026 · 4:42 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0001488139

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock	Sep 10, 2026	M	6,250	$0.00	A	1,019,847	D
Class A Common Stock^F1	holding	—	—		—	1,100,000	I	By trust
Class A Common Stock^F2	holding	—	—		—	200,000	I	By spouse

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Restricted Stock Unit^F5,F3,F4	—	Sep 10, 2026	M	6,250	D	—	—	Class A Common Stock	6,250	11,250	D

F1Shares 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.
F2The 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.
F3Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock ("Common Stock").
F4Each 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.
F5Represents RSUs granted at various dates.