Form 3 Filing for Debra L. Angelico

This filing details the ownership of Ameresco, Inc. Class A Common Stock by Debra L. Angelico, who holds the position of Interim PAO. The filing includes information on stock options with various exercise prices and expiration dates, as well as restricted stock units (RSUs) that vest over time. Specifically, there are five stock option grants detailed, with exercise prices ranging from $21.13 to $95.31 and expiration dates extending to 2036. Two RSU grants are also listed, with vesting schedules tied to 6-month anniversaries of the grant date. Ms. Angelico directly holds 132 shares of Class A Common Stock following these transactions. Additionally, a limited power of attorney document is included, appointing John W. Pickett, Nina Andersson-Willard, and Lenka Patten to act on her behalf for Section 16 reporting obligations with the SEC. This power of attorney remains in effect until she is no longer required to file these forms or until it is revoked.