Form 4 Filing by STAVROPOULOS NICKOLAS for Ameresco, Inc.

This Form 4 filing details transactions made by STAVROPOULOS NICKOLAS, a director at Ameresco, Inc. (AMRC), on May 15, 2026. The transactions include the acquisition of 1355 shares of Class A Common Stock at $16.33 per share, and the disposal of 1355 shares of Class A Common Stock at $34.00 per share. Additionally, a stock option (right to purchase) for 1355 shares of Class A Common Stock was exercised. The sales were executed under a Rule 10b5-1 trading plan. Following these transactions, STAVROPOULOS NICKOLAS holds 14111 shares of Class A Common Stock directly and has 6000 shares subject to options.