Wellington Management Group LLP Increases Stake in Ameresco, Inc. to 10.2%

Wellington Management Group LLP, along with its affiliated entities Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP, filed a Schedule 13G/A on May 15, 2026, regarding their holdings in Ameresco, Inc. (AMRC). The filing reports a combined beneficial ownership of 3,541,577 shares of Common Stock, representing a 10.2% stake in the company based on an event date of March 31, 2026. This reflects a significant increase from the previously reported 0.0% ownership position. The shares are held of record by various investment advisers and their clients, with Wellington Management Group LLP acting as the parent holding company. The filing indicates shared voting power over 2,835,089 shares and shared dispositive power over the full 3,541,577 shares. The reporting persons certify that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer.