Ameresco, Inc. — Director's Dealing 2011

May 17, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ameresco, Inc. (AMRC)
CIK: 0001488139
Period of Report: 2011-05-16

Reporting Person: DeManche Joseph P (Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-16	Class A Common Stock	M	81758	$4.22	Acquired	256758	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-16	Stock Option (right to purchase)	$4.22	M	81758	Disposed	2017-07-25	Class A Common Stock (81758)	Direct

Footnotes

F1: Of the shares subject to the option, 20% vested on July 25, 2008, and the remainder vest in 16 equal quarterly installments thereafter.