Insider Transaction Report for Mark Chiplock

Mark Chiplock, EVP, CFO & CAO of Ameresco, Inc., reported a transaction on September 10, 2026. He acquired 1625 shares of Class A Common Stock through the vesting of Restricted Stock Units (RSUs). These RSUs, granted at various dates, vest over two years with 25% vesting every six months. Each RSU represents a contingent right to one share of Class A Common Stock. Following this transaction, Chiplock directly owns 3291 shares of Class A Common Stock and holds 3375 RSUs. The acquisition was marked with a transaction code "A" and disposal code "D" for the RSUs, with a share price of $0.0.