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The option vested based on performance relative to goals established for the three-year performance period from January 1, 2025 to December 31, 2027, subject to continued service to Ameresco, Inc. In connection with the reporting person's resignation as Ameresco, Inc.'s Executive Vice President, General Counsel and Secretary and transition to Special Legal Advisor to the Company, the Compensation Committee of Ameresco, Inc.'s Board of Directors reviewed the performance criteria achieved to date and accelerated this option such that the option vested as to 25,000 shares effective as of the resignation date and the remaining 25,000 options were forfeited."}],"balance_after":25000,"derivative":{"exercise_price":14.55,"exercise_date":"2026-08-17","expiration_date":"2035-05-11","underlying":"Class A Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001628280-26-057990","document":"wk-form4_1787171742.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000162828026057990/wk-form4_1787171742.xml","form_type":"4"}},{"id":846072,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Restricted Stock Unit","published_at":"2026-03-13T00:39:35.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":false,"shares":50,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By spouse"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each RSU represents a contingent right to receive one share of Ameresco, Inc. 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These shares were sold in multiple transactions at prices ranging from $70.40 to $71.16, inclusive."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001488139-21-000118","document":"wf-form4_163104757282789.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000118/wf-form4_163104757282789.xml","form_type":"4"}},{"id":2577213,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-09-07T20:46:25.000Z","date":"2021-09-02","kind":"sale","acquired":false,"shares":7156,"price":71.58,"value":512226.48,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.30 to $72.20, inclusive. 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) and (2) to this Form 4."}],"balance_after":17245,"source":{"system":"sec-edgar","filing":"0001488139-21-000118","document":"wf-form4_163104757282789.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000118/wf-form4_163104757282789.xml","form_type":"4"}},{"id":2577212,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-09-07T20:46:25.000Z","date":"2021-09-02","kind":"exercise","acquired":true,"shares":24401,"price":4.64,"value":113220.64,"ownership":{"direct":true},"balance_after":24401,"source":{"system":"sec-edgar","filing":"0001488139-21-000118","document":"wf-form4_163104757282789.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000118/wf-form4_163104757282789.xml","form_type":"4"}},{"id":2803181,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Stock Option (right to purchase)","published_at":"2021-03-08T22:00:04.000Z","date":"2021-03-05","kind":"grant","acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Of the shares subject to the option, 20% vest on March 5, 2022, and the remainder vest in four equal installments on each of the subsequent four anniversaries of such date."}],"balance_after":25000,"derivative":{"exercise_price":43,"expiration_date":"2031-03-04","underlying":"Class A Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001488139-21-000045","document":"wf-form4_161524079026955.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000045/wf-form4_161524079026955.xml","form_type":"4"}},{"id":2892132,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-28T21:25:40.000Z","date":"2021-01-26","kind":"sale","acquired":false,"shares":741,"price":58.268,"value":43176.588,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.93 to $58.68, inclusive. 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":0,"source":{"system":"sec-edgar","filing":"0001488139-21-000017","document":"wf-form4_161186912759288.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000017/wf-form4_161186912759288.xml","form_type":"4"}},{"id":2892131,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-28T21:21:10.000Z","date":"2021-01-25","kind":"sale","acquired":false,"shares":42338,"price":58.979,"value":2497052.902,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"shares","element":"transactionShares","label":"F3","text":"The reporting person's original Form 4 incorrectly reported the number of shares sold on January 25, 2021 as 12,388. The correct number is 12,338."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.12 to $60.21, inclusive. 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 (3) to this Form 4."}],"balance_after":741,"source":{"system":"sec-edgar","filing":"0001488139-21-000015","document":"wf-form4a_161186885479273.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000015/wf-form4a_161186885479273.xml","form_type":"4/A","original_submission_date":"2021-01-26"}},{"id":2892130,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-28T21:21:10.000Z","date":"2021-01-22","kind":"sale","acquired":false,"shares":12151,"price":58.437,"value":710067.987,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.45 to $59.13, inclusive. 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":43079,"source":{"system":"sec-edgar","filing":"0001488139-21-000015","document":"wf-form4a_161186885479273.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000015/wf-form4a_161186885479273.xml","form_type":"4/A","original_submission_date":"2021-01-26"}},{"id":2895139,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-26T21:31:36.000Z","date":"2021-01-25","kind":"sale","acquired":false,"shares":42388,"price":58.979,"value":2500001.852,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.12 to $60.21, inclusive. 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 (3) to this Form 4."}],"balance_after":691,"source":{"system":"sec-edgar","filing":"0001488139-21-000014","document":"wf-form4_161169667748339.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000014/wf-form4_161169667748339.xml","form_type":"4"}},{"id":2895138,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-26T21:31:36.000Z","date":"2021-01-22","kind":"sale","acquired":false,"shares":12151,"price":58.437,"value":710067.987,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.45 to $59.13, inclusive. 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":43079,"source":{"system":"sec-edgar","filing":"0001488139-21-000014","document":"wf-form4_161169667748339.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000014/wf-form4_161169667748339.xml","form_type":"4"}},{"id":2899261,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-22T21:42:49.000Z","date":"2021-01-21","kind":"sale","acquired":false,"shares":15395,"price":58.968,"value":907812.36,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.39 to $59.65, inclusive. 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 (3) to this Form 4."}],"balance_after":55230,"source":{"system":"sec-edgar","filing":"0001488139-21-000011","document":"wf-form4_161135175567801.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000011/wf-form4_161135175567801.xml","form_type":"4"}},{"id":2899260,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-22T21:42:49.000Z","date":"2021-01-20","kind":"sale","acquired":false,"shares":16379,"price":58.034,"value":950538.886,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.67 to $59.13, inclusive. 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":70625,"source":{"system":"sec-edgar","filing":"0001488139-21-000011","document":"wf-form4_161135175567801.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000011/wf-form4_161135175567801.xml","form_type":"4"}},{"id":2902333,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-20T21:37:49.000Z","date":"2021-01-19","kind":"sale","acquired":false,"shares":32924,"price":56.902,"value":1873441.448,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.71 to $58.05, inclusive. 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 (3) to this Form 4."}],"balance_after":87004,"source":{"system":"sec-edgar","filing":"0001488139-21-000009","document":"wf-form4_161117865641830.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000009/wf-form4_161117865641830.xml","form_type":"4"}},{"id":2902332,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-20T21:37:49.000Z","date":"2021-01-15","kind":"sale","acquired":false,"shares":26550,"price":54.28,"value":1441134.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $52.90 to $57.21, inclusive. 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":119928,"source":{"system":"sec-edgar","filing":"0001488139-21-000009","document":"wf-form4_161117865641830.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000009/wf-form4_161117865641830.xml","form_type":"4"}},{"id":2905926,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-15T21:51:12.000Z","date":"2021-01-14","kind":"sale","acquired":false,"shares":17318,"price":58.166,"value":1007318.788,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.32 to $59.57, inclusive. 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 (3) to this Form 4."}],"balance_after":146478,"source":{"system":"sec-edgar","filing":"0001488139-21-000007","document":"wf-form4_161074745873003.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000007/wf-form4_161074745873003.xml","form_type":"4"}},{"id":2905925,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-15T21:51:12.000Z","date":"2021-01-13","kind":"sale","acquired":false,"shares":26257,"price":59.77,"value":1569380.89,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.53 to $60.19, inclusive. 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":163796,"source":{"system":"sec-edgar","filing":"0001488139-21-000007","document":"wf-form4_161074745873003.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000007/wf-form4_161074745873003.xml","form_type":"4"}},{"id":2908206,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-13T21:39:10.000Z","date":"2021-01-11","kind":"sale","acquired":false,"shares":26344,"price":59.071,"value":1556166.424,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.02 to $59.99, inclusive. 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 (3) to this Form 4."}],"balance_after":190053,"source":{"system":"sec-edgar","filing":"0001488139-21-000002","document":"wf-form4_161057393462449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000002/wf-form4_161057393462449.xml","form_type":"4"}},{"id":2908205,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2021-01-13T21:39:10.000Z","date":"2021-01-11","kind":"sale","acquired":false,"shares":28199,"price":58.631,"value":1653335.569,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 10, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.64 to $59.54, inclusive. 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":216397,"source":{"system":"sec-edgar","filing":"0001488139-21-000002","document":"wf-form4_161057393462449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496596/000148813921000002/wf-form4_161057393462449.xml","form_type":"4"}},{"id":2950146,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":21628,"kind":"person","name":"Corrsin David J","position":1,"cik":"0001496596","reported_name":"Corrsin David J","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP and General Counsel"}}],"security":"Class A Common Stock","published_at":"2020-12-10T21:18:54.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":21383,"price":44.838,"value":958770.954,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.75 to $45.07, inclusive. 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