Ameresco, Inc. — Director's Dealing 2011

Mar 23, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ameresco, Inc. (AMRC)
CIK: 0001488139
Period of Report: 2011-03-21

Reporting Person: Anderson David (Director, Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-21	Class A Common Stock	S	40006	$13.235	Disposed	641029	Direct
2011-03-22	Class A Common Stock	S	26216	$12.846	Disposed	614813	Direct

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 11, 2010.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.00 to $13.76,
inclusive. The reporting person undertakes to provide to Ameresco, Inc., any security holder of Ameresco, Inc., or the staff of the Securities and
Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes
(2) and (3) to this Form 4.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $12.66 to $13.05,
inclusive.