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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 footnotes (1), (2) and (3) to this Form 4."}],"balance_after":14176,"source":{"system":"sec-edgar","filing":"0001488139-21-000119","document":"wf-form4_163104774682616.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000119/wf-form4_163104774682616.xml","form_type":"4"}},{"id":2583457,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-09-01T21:12:43.000Z","date":"2021-08-30","kind":"sale","acquired":false,"shares":2000,"price":68.746,"value":137492.0,"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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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":15176,"source":{"system":"sec-edgar","filing":"0001488139-21-000115","document":"wf-form4_163053074694202.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000115/wf-form4_163053074694202.xml","form_type":"4"}},{"id":2597815,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-18T20:48:30.000Z","date":"2021-08-16","kind":"sale","acquired":false,"shares":2000,"price":65.89,"value":131780.0,"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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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":17176,"source":{"system":"sec-edgar","filing":"0001488139-21-000112","document":"wf-form4_162931969655052.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000112/wf-form4_162931969655052.xml","form_type":"4"}},{"id":2605348,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-12T21:17:10.000Z","date":"2021-08-10","kind":"sale","acquired":false,"shares":2000,"price":69.58,"value":139160.0,"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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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":19176,"source":{"system":"sec-edgar","filing":"0001488139-21-000111","document":"wf-form4_162880300377646.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000111/wf-form4_162880300377646.xml","form_type":"4"}},{"id":2608424,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-10T20:16:07.000Z","date":"2021-08-09","kind":"sale","acquired":false,"shares":2000,"price":68.59,"value":137180.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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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 footnotes (1), (2) and (3) to this Form 4."}],"balance_after":21176,"source":{"system":"sec-edgar","filing":"0001488139-21-000108","document":"wf-form4_162862652352681.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000108/wf-form4_162862652352681.xml","form_type":"4"}},{"id":2608423,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-10T20:16:07.000Z","date":"2021-08-09","kind":"sale","acquired":false,"shares":1500,"price":67,"value":100500.0,"ownership":{"direct":true},"balance_after":23176,"source":{"system":"sec-edgar","filing":"0001488139-21-000108","document":"wf-form4_162862652352681.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813921000108/wf-form4_162862652352681.xml","form_type":"4"}},{"id":2608422,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-10T20:16:07.000Z","date":"2021-08-09","kind":"sale","acquired":false,"shares":1500,"price":66.04,"value":99060.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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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 (2) to this Form 4."}],"balance_after":63676,"source":{"system":"sec-edgar","filing":"0001488139-20-000116","document":"wf-form4_160694507439968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000116/wf-form4_160694507439968.xml","form_type":"4"}},{"id":2960926,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-12-02T21:38:07.000Z","date":"2020-12-01","kind":"exercise","acquired":true,"shares":10000,"price":8.39,"value":83900.0,"ownership":{"direct":true},"balance_after":68676,"source":{"system":"sec-edgar","filing":"0001488139-20-000116","document":"wf-form4_160694507439968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000116/wf-form4_160694507439968.xml","form_type":"4"}},{"id":2960925,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-12-02T21:38:07.000Z","date":"2020-11-30","kind":"sale","acquired":false,"shares":5000,"price":43.912,"value":219560.0,"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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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":58676,"source":{"system":"sec-edgar","filing":"0001488139-20-000116","document":"wf-form4_160694507439968.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000116/wf-form4_160694507439968.xml","form_type":"4"}},{"id":2966067,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-11-25T22:16:43.000Z","date":"2020-11-24","kind":"sale","acquired":false,"shares":5000,"price":45.528,"value":227640.0,"ownership":{"direct":true},"balance_after":63676,"source":{"system":"sec-edgar","filing":"0001488139-20-000098","document":"wf-form4_160634257965514.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000098/wf-form4_160634257965514.xml","form_type":"4"}},{"id":2969826,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-11-23T21:39:38.000Z","date":"2020-11-20","kind":"sale","acquired":false,"shares":3000,"price":42.97,"value":128910.0,"ownership":{"direct":true},"balance_after":68676,"source":{"system":"sec-edgar","filing":"0001488139-20-000088","document":"wf-form4_160616756529758.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000088/wf-form4_160616756529758.xml","form_type":"4"}},{"id":2975155,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-11-18T21:46:18.000Z","date":"2020-11-17","kind":"sale","acquired":false,"shares":2000,"price":43.179,"value":86358.0,"ownership":{"direct":true},"balance_after":71676,"source":{"system":"sec-edgar","filing":"0001488139-20-000081","document":"wf-form4_160573596280203.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000081/wf-form4_160573596280203.xml","form_type":"4"}},{"id":2975154,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-11-18T21:46:18.000Z","date":"2020-11-16","kind":"sale","acquired":false,"shares":2000,"price":43.4,"value":86800.0,"ownership":{"direct":true},"balance_after":73676,"source":{"system":"sec-edgar","filing":"0001488139-20-000081","document":"wf-form4_160573596280203.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1488139/000148813920000081/wf-form4_160573596280203.xml","form_type":"4"}},{"id":2983533,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":40908,"kind":"person","name":"WISNESKI FRANCIS V JR","position":1,"cik":"0001263052","reported_name":"WISNESKI FRANCIS V JR","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A Common Stock","published_at":"2020-11-12T22:02:50.000Z","date":"2020-11-11","kind":"sale","acquired":false,"shares":2000,"price":44.105,"value":88210.0,"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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