Form 4 Filing for Ameresco, Inc.

This filing details transactions by George P. Sakellaris, CEO of Ameresco, Inc. (AMRC). On September 10, 2026, Sakellaris acquired 6,250 shares of Class A Common Stock via a derivative transaction involving Restricted Stock Units (RSUs). These RSUs, representing a contingent right to one share of Common Stock each, vest over two years. Following this transaction, Sakellaris directly holds 1,019,847 shares. Additionally, the filing notes indirect holdings: 1,100,000 shares held by a trust for his children and 200,000 shares held by his spouse. Sakellaris disclaims beneficial ownership of the shares held by the trust and his spouse, as per footnotes F1 and F2. The RSU grant details are further elaborated in footnotes F3, F4, and F5.