Ameresco director and general counsel David Corrsin retires

What happened

Ameresco, Inc. (NYSE: AMRC) disclosed in an 8-K filing dated August 19, 2026, that David J. Corrsin, 68, resigned from his position as a Class II director, effective August 17, 2026, in connection with his retirement as Executive Vice President and General Counsel, also effective that date.

Following his retirement, Corrsin will continue to serve as the company's Special Legal Advisor. Ameresco said his resignation was not the result of any disagreement with the company regarding its operations, policies, or practices.

Corrsin had been a director since the company's formation in 2000. The company thanked him for his service and said it looks forward to continuing to benefit from his experience in his new advisory role.

On the filing date, Ameresco's stock closed at $21.38, down 3.65% from the prior close of $22.19.

Who is Ameresco

Ameresco, headquartered in Framingham, Massachusetts, is a company that provides energy efficiency and renewable energy services, including the development, construction, and operation of energy infrastructure projects. It is categorized as a special trade contractor in the construction sector.

What this means

This is an 8-K filing, a form companies use to notify shareholders and the public of material events that are not part of routine business. Item 5.02 specifically covers departures of directors or certain officers, elections, appointments, and compensatory arrangements.

Here, the item is triggered by a director and officer departure. The filing serves to formally record that David Corrsin stepped down from his board seat and executive role. Because he is staying on as Special Legal Advisor, this is a transition rather than a clean exit.

The 3.65% stock decline on the same day is not tied to any reason in the filing. The disclosure does not explain the price move, and no cause is stated.

Under normal procedures, the company will continue with its remaining board members. Corrsin's advisory role means he will still provide legal counsel, but he no longer holds board or officer responsibilities.