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The reporting person undertakes to provide to Ameresco, Inc., any security holder of Ameresco, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (1) to this Form 4."}],"balance_after":14000,"source":{"system":"sec-edgar","filing":"0001488139-20-000030","document":"wf-form4_158923056355868.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496492/000148813920000030/wf-form4_158923056355868.xml","form_type":"4"}},{"id":3154417,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":122583,"kind":"person","name":"Foy Douglas I","position":1,"cik":"0001496492","reported_name":"Foy Douglas I","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-05-11T16:56:22.000Z","date":"2020-05-08","kind":"exercise","acquired":true,"shares":12523,"price":13.05,"value":163425.15,"ownership":{"direct":true},"balance_after":26523,"source":{"system":"sec-edgar","filing":"0001488139-20-000030","document":"wf-form4_158923056355868.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496492/000148813920000030/wf-form4_158923056355868.xml","form_type":"4"}},{"id":3154416,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":122583,"kind":"person","name":"Foy Douglas I","position":1,"cik":"0001496492","reported_name":"Foy Douglas I","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-05-11T16:56:22.000Z","date":"2020-05-07","kind":"sale","acquired":false,"shares":14000,"price":19.429,"value":272006.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. 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on June 1, 2018, and the remainder vest in four equal installments on each of the subsequent four anniversaries of such date."}],"balance_after":10000,"derivative":{"exercise_price":6.8,"expiration_date":"2027-05-31","underlying":"Class A Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001488139-17-000040","document":"wf-form4_149850995803555.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496492/000148813917000040/wf-form4_149850995803555.xml","form_type":"4"}},{"id":4388694,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":122583,"kind":"person","name":"Foy Douglas I","position":1,"cik":"0001496492","reported_name":"Foy Douglas I","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to 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