Ameresco Officer Louis P Maltezos Granted 30,000 Stock Options

Louis P Maltezos, President-Central & West USA Canada of Ameresco, Inc., was granted 30,000 stock options on May 18, 2026, with an exercise price of $31.02 per share. The options have a 10-year term expiring May 18, 2036, and vest over a five-year period, with 20% vesting on each anniversary of the grant date. This Form 4 filing reports the initial award of these derivative securities, which represent the right to purchase Class A Common Stock. The transaction was reported by David J. Corrsin acting as attorney-in-fact for the officer. This filing is a routine disclosure of executive compensation and equity incentives.