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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 purchased at each separate price within the range set forth in this footnote 1 to this Form 4."}],"balance_after":853638,"source":{"system":"sec-edgar","filing":"0001488139-24-000182","document":"wk-form4_1731706721.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813924000182/wk-form4_1731706721.xml","form_type":"4"}},{"id":1402355,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Restricted Stock Unit","published_at":"2024-09-19T22:03:50.000Z","date":"2024-09-17","kind":"exercise","planned":false,"acquired":false,"shares":2459,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each RSU represents a contingent right to receive one share of Ameresco, Inc. 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The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1100000,"source":{"system":"sec-edgar","filing":"0001488139-23-000181","document":"wk-form4_1700604193.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000181/wk-form4_1700604193.xml","form_type":"4"}},{"id":1732575,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-21T22:03:26.000Z","date":"2023-11-20","kind":"purchase","planned":false,"acquired":true,"shares":2600,"price":28.89,"value":75114.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. 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The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1097600,"source":{"system":"sec-edgar","filing":"0001488139-23-000181","document":"wk-form4_1700604193.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000181/wk-form4_1700604193.xml","form_type":"4"}},{"id":1732574,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-21T22:03:26.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":1500,"price":29.46,"value":44190.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. 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The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1095000,"source":{"system":"sec-edgar","filing":"0001488139-23-000181","document":"wk-form4_1700604193.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000181/wk-form4_1700604193.xml","form_type":"4"}},{"id":1732573,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-21T22:03:26.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":1200,"price":28.46,"value":34152.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $27.98 to $28.96, inclusive."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1093500,"source":{"system":"sec-edgar","filing":"0001488139-23-000181","document":"wk-form4_1700604193.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000181/wk-form4_1700604193.xml","form_type":"4"}},{"id":1732572,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-21T22:03:26.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":2300,"price":27.54,"value":63342.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $26.97 to $27.80, inclusive."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1092300,"source":{"system":"sec-edgar","filing":"0001488139-23-000181","document":"wk-form4_1700604193.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000181/wk-form4_1700604193.xml","form_type":"4"}},{"id":1739015,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-16T23:25:03.000Z","date":"2023-11-16","kind":"purchase","planned":false,"acquired":true,"shares":600,"price":27.39,"value":16434.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $27.10 to $27.64, 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 purchased at each separate price within the range set forth in this footnotes (1) through (4) and footnotes (6) through (8) to this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1090000,"source":{"system":"sec-edgar","filing":"0001488139-23-000179","document":"wk-form4_1700177093.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000179/wk-form4_1700177093.xml","form_type":"4"}},{"id":1739014,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-16T23:25:03.000Z","date":"2023-11-16","kind":"purchase","planned":false,"acquired":true,"shares":4400,"price":26.41,"value":116204.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $26.13 to $27.08, inclusive."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1089400,"source":{"system":"sec-edgar","filing":"0001488139-23-000179","document":"wk-form4_1700177093.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000179/wk-form4_1700177093.xml","form_type":"4"}},{"id":1739013,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-16T23:25:03.000Z","date":"2023-11-15","kind":"purchase","planned":false,"acquired":true,"shares":1400,"price":29.16,"value":40824.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $28.97 to $29.36, inclusive."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1085000,"source":{"system":"sec-edgar","filing":"0001488139-23-000179","document":"wk-form4_1700177093.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000179/wk-form4_1700177093.xml","form_type":"4"}},{"id":1739012,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-16T23:25:03.000Z","date":"2023-11-15","kind":"purchase","planned":false,"acquired":true,"shares":8600,"price":28.39,"value":244154.0,"ownership":{"direct":false,"nature":"By trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $27.92 to $28.84, inclusive."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares held by a trust for the benefit of the reporting person's children, who share the reporting person's household.  The reporting person may be deemed the beneficial owner of the shares held by the trust.  The reporting person disclaims beneficial ownership of the shares held by the trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the trust's shares for purposes of Section 16 or for any other purpose."}],"balance_after":1083600,"source":{"system":"sec-edgar","filing":"0001488139-23-000179","document":"wk-form4_1700177093.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000179/wk-form4_1700177093.xml","form_type":"4"}},{"id":1739011,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-16T23:25:03.000Z","date":"2023-11-14","kind":"purchase","planned":false,"acquired":true,"shares":5090,"price":27.06,"value":137735.4,"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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These shares were purchased in multiple transactions at prices ranging from $24.65 to $25.64, inclusive."}],"balance_after":814620,"source":{"system":"sec-edgar","filing":"0001488139-23-000179","document":"wk-form4_1700177093.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000179/wk-form4_1700177093.xml","form_type":"4"}},{"id":1743915,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-13T22:10:27.000Z","date":"2023-11-13","kind":"purchase","planned":false,"acquired":true,"shares":15000,"price":22.66,"value":339900.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $22.15 to $23.00, 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 purchased at each separate price within the range set forth in footnotes (2) to (5) to this Form 4."}],"balance_after":813720,"source":{"system":"sec-edgar","filing":"0001488139-23-000176","document":"wk-form4_1699913410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000176/wk-form4_1699913410.xml","form_type":"4"}},{"id":1743914,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-13T22:10:27.000Z","date":"2023-11-10","kind":"purchase","planned":false,"acquired":true,"shares":902,"price":22.56,"value":20349.12,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $22.45 to $22.70, inclusive."}],"balance_after":798720,"source":{"system":"sec-edgar","filing":"0001488139-23-000176","document":"wk-form4_1699913410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000176/wk-form4_1699913410.xml","form_type":"4"}},{"id":1743913,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-13T22:10:27.000Z","date":"2023-11-10","kind":"purchase","planned":false,"acquired":true,"shares":4098,"price":22.11,"value":90606.78,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.49 to $22.44, inclusive."}],"balance_after":797818,"source":{"system":"sec-edgar","filing":"0001488139-23-000176","document":"wk-form4_1699913410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000176/wk-form4_1699913410.xml","form_type":"4"}},{"id":1743912,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-11-13T22:10:27.000Z","date":"2023-11-09","kind":"purchase","planned":false,"acquired":true,"shares":20000,"price":22.59,"value":451800.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reporting person's purchase of Ameresco Class A common stock reported herein was matchable under Section 16(b) of the Securities Exchange Act of 1934, to the extent of 1,072 shares, with the reporting person's sale of 1,072 shares of Ameresco Class A common stock at a price of $43.51 per share on September 17, 2023 pursuant to an automatic sell-to-cover instruction solely to cover applicable withholding taxes in connection with the vesting of the reporting person's RSUs granted on March 17, 2023. The reporting person has agreed to pay to Ameresco, upon settlement of the sale, $22,378.01 representing the full amount of the profit realized in connection with the short-swing transaction, less transaction costs."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $22.13 to $23.04, inclusive."}],"balance_after":793720,"source":{"system":"sec-edgar","filing":"0001488139-23-000176","document":"wk-form4_1699913410.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000176/wk-form4_1699913410.xml","form_type":"4"}},{"id":1777306,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Restricted Stock Unit","published_at":"2023-09-20T01:23:46.000Z","date":"2023-09-17","kind":"exercise","planned":true,"acquired":false,"shares":2460,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock (\"Common Stock\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The RSUs, representing a contingent right to receive a total of 9.837 shares of Common Stock, were granted to the Reporting Person on March 17, 2023 and vests in 25% increments each six months anniversary from the grant date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The RSUs, representing a contingent right to receive a total of 9.837 shares of Common Stock, were granted to the Reporting Person on March 17, 2023 and vests in 25% increments each six months anniversary from the grant date."}],"balance_after":7377,"derivative":{"underlying":"Class A Common Stock","underlying_shares":2460},"source":{"system":"sec-edgar","filing":"0001488139-23-000162","document":"wk-form4_1695173016.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000162/wk-form4_1695173016.xml","form_type":"4"}},{"id":1777305,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-09-20T01:23:46.000Z","date":"2023-09-19","kind":"sale","planned":true,"acquired":false,"shares":1072,"price":43.51,"value":46642.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares were sold  pursuant to an automatic sell-to-cover instruction  dated March 8, 2023 required to be signed solely to cover applicable withholding taxes in connection with the  vesting of RSUs."}],"balance_after":773720,"source":{"system":"sec-edgar","filing":"0001488139-23-000162","document":"wk-form4_1695173016.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000162/wk-form4_1695173016.xml","form_type":"4"}},{"id":1777304,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-09-20T01:23:46.000Z","date":"2023-09-17","kind":"exercise","planned":true,"acquired":true,"shares":2460,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":774792,"source":{"system":"sec-edgar","filing":"0001488139-23-000162","document":"wk-form4_1695173016.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000162/wk-form4_1695173016.xml","form_type":"4"}},{"id":1944440,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Restricted Stock Unit","published_at":"2023-03-20T21:55:46.000Z","date":"2023-03-17","kind":"grant","planned":false,"acquired":true,"shares":9837,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each RSU represents a contingent right to receive one share of Ameresco, Inc. Class A Common Stock (\"Common Stock\")."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs, representing a contingent right to receive a total of 9,837 shares of Common Stock, were granted to the Reporting Person on March 17, 2023 and vests in 25% increments each six months anniversary from the grant date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The RSUs, representing a contingent right to receive a total of 9,837 shares of Common Stock, were granted to the Reporting Person on March 17, 2023 and vests in 25% increments each six months anniversary from the grant date."}],"balance_after":9837,"derivative":{"underlying":"Class A Common Stock","underlying_shares":9837},"source":{"system":"sec-edgar","filing":"0001488139-23-000034","document":"wf-form4_167934933534160.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000034/wf-form4_167934933534160.xml","form_type":"4"}},{"id":1963217,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (right to purchase)","published_at":"2023-03-08T22:33:48.000Z","date":"2023-03-07","kind":"exercise","acquired":false,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Of the shares subject to the option, 20% vest on May 22, 2015, and the remainder vest on each of the subsequent four anniversaries of such date."}],"balance_after":0,"derivative":{"exercise_price":6.7,"expiration_date":"2024-05-21","underlying":"Class A Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001488139-23-000016","document":"wf-form4_167831481455292.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000016/wf-form4_167831481455292.xml","form_type":"4"}},{"id":1963216,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2023-03-08T22:33:48.000Z","date":"2023-03-07","kind":"exercise","acquired":true,"shares":25000,"price":6.7,"value":167500.0,"ownership":{"direct":true},"balance_after":772332,"source":{"system":"sec-edgar","filing":"0001488139-23-000016","document":"wf-form4_167831481455292.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813923000016/wf-form4_167831481455292.xml","form_type":"4"}},{"id":2344402,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (right to puchase)","published_at":"2022-03-08T22:49:39.000Z","date":"2022-03-04","kind":"grant","acquired":true,"shares":320000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 6, 2019, the reporting person was granted an option to purchase 350,000 shares of Class A common stock. The option vested based on continued service to Ameresco, Inc. and performance relative to goals established for the three-year performance period from January 1, 2019 to December 31, 2021. 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The reporting person disclaims beneficial ownership of the shares held by his spouse, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's shares for purposes of Section 16 or for any other purpose."}],"balance_after":200000,"source":{"system":"sec-edgar","filing":"0001488139-22-000002","document":"wf-form5_164384444346952.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813922000002/wf-form5_164384444346952.xml","form_type":"5"}},{"id":2416610,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2022-02-02T23:27:43.000Z","date":"2021-01-27","kind":"gift","acquired":false,"shares":200000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This transaction involved a gift of securities by the reporting person to his spouse. The reporting person disclaims beneficial ownership of the shares held by his spouse, and this report should not be deemed an admission that the reporting person is the beneficial owner of his spouse's shares for purposes of Section 16 or for any other purpose."}],"balance_after":762332,"source":{"system":"sec-edgar","filing":"0001488139-22-000002","document":"wf-form5_164384444346952.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813922000002/wf-form5_164384444346952.xml","form_type":"5"}},{"id":2522885,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-05T21:01:39.000Z","date":"2021-11-04","kind":"sale","acquired":false,"shares":2667,"price":92.101,"value":245633.367,"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 September 10, 2021."},{"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 $91.52 to $92.49, 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 (2)-(4) to this Form 4."}],"balance_after":962332,"source":{"system":"sec-edgar","filing":"0001488139-21-000143","document":"wf-form4_163614608093864.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000143/wf-form4_163614608093864.xml","form_type":"4"}},{"id":2522884,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-05T21:01:39.000Z","date":"2021-11-04","kind":"sale","acquired":false,"shares":4453,"price":92.98,"value":414039.94,"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 September 10, 2021."},{"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 $92.50 to $93.49, inclusive."}],"balance_after":964999,"source":{"system":"sec-edgar","filing":"0001488139-21-000143","document":"wf-form4_163614608093864.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000143/wf-form4_163614608093864.xml","form_type":"4"}},{"id":2522883,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-05T21:01:39.000Z","date":"2021-11-04","kind":"sale","acquired":false,"shares":1503,"price":93.767,"value":140931.801,"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 September 10, 2021."},{"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 $93.50 to $94.49, inclusive."}],"balance_after":969452,"source":{"system":"sec-edgar","filing":"0001488139-21-000143","document":"wf-form4_163614608093864.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000143/wf-form4_163614608093864.xml","form_type":"4"}},{"id":2524533,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":500,"price":89.609,"value":44804.5,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F16","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.11 to $89.81, 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 (2)-(16) to this Form 4."}],"balance_after":970955,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524532,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":900,"price":90.331,"value":81297.9,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F15","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.93 to $90.90, inclusive."}],"balance_after":971455,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524531,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":500,"price":91.46,"value":45730.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.12 to $92.10, inclusive."}],"balance_after":972355,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524530,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":1600,"price":93.064,"value":148902.4,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.61 to $93.23, inclusive."}],"balance_after":972855,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524529,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":895,"price":94.36,"value":84452.2,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.18 to $94.48, inclusive."}],"balance_after":974455,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524528,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":1200,"price":95.014,"value":114016.8,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $94.65 to $95.49, inclusive."}],"balance_after":975350,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524527,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":2600,"price":96.302,"value":250385.2,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.94 to $96.85, inclusive."}],"balance_after":976550,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524526,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-02","kind":"sale","acquired":false,"shares":400,"price":85.252,"value":34100.8,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $86.31 to $87.08, inclusive."}],"balance_after":979550,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524524,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-02","kind":"sale","acquired":false,"shares":400,"price":88.23,"value":35292.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $91.17 to $91.99, inclusive."}],"balance_after":982934,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2524520,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-04T21:47:18.000Z","date":"2021-11-02","kind":"sale","acquired":false,"shares":4891,"price":92.612,"value":452965.292,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $93.20 to $94.14, inclusive."}],"balance_after":990373,"source":{"system":"sec-edgar","filing":"0001488139-21-000142","document":"wf-form4_163606242190934.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000142/wf-form4_163606242190934.xml","form_type":"4"}},{"id":2528887,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":100,"price":82.25,"value":8225.0,"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 September 10, 2021."}],"balance_after":993932,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528886,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":100,"price":82.27,"value":8227.0,"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 September 10, 2021."}],"balance_after":994032,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528885,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":1300,"price":83.11,"value":108043.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.45 to $83.44, 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 (2)-(8) to this Form 4."}],"balance_after":994132,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528884,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":2400,"price":84.024,"value":201657.6,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.57 to $84.52, inclusive."}],"balance_after":995432,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528883,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":6398,"price":85.157,"value":544834.486,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.63 to $85.60, inclusive."}],"balance_after":997832,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528882,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-10-29","kind":"sale","acquired":false,"shares":300,"price":79.552,"value":23865.6,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.50 to $79.63, inclusive."}],"balance_after":1004230,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528881,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-10-29","kind":"sale","acquired":false,"shares":2500,"price":80.236,"value":200590.0,"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 September 10, 2021."},{"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 $79.76 to $80.70, inclusive."}],"balance_after":1004530,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528880,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-10-29","kind":"sale","acquired":false,"shares":5110,"price":81.165,"value":414753.15,"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 September 10, 2021."},{"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 $80.77 to $81.74, inclusive."}],"balance_after":1007030,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2528879,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-11-02T20:44:11.000Z","date":"2021-10-29","kind":"sale","acquired":false,"shares":4939,"price":82.259,"value":406277.201,"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 September 10, 2021."},{"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 $81.94 to $82.82, inclusive."}],"balance_after":1012140,"source":{"system":"sec-edgar","filing":"0001488139-21-000141","document":"wf-form4_163588579860056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000141/wf-form4_163588579860056.xml","form_type":"4"}},{"id":2531818,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-29T21:25:22.000Z","date":"2021-10-28","kind":"sale","acquired":false,"shares":200,"price":77.215,"value":15443.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.17 to $77.26, 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 (2)-(5) to this Form 4."}],"balance_after":1017079,"source":{"system":"sec-edgar","filing":"0001488139-21-000134","document":"wf-form4_163554270633132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000134/wf-form4_163554270633132.xml","form_type":"4"}},{"id":2531817,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-29T21:25:22.000Z","date":"2021-10-28","kind":"sale","acquired":false,"shares":600,"price":78.24,"value":46944.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $78.60 to $79.45, inclusive."}],"balance_after":1017879,"source":{"system":"sec-edgar","filing":"0001488139-21-000134","document":"wf-form4_163554270633132.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000134/wf-form4_163554270633132.xml","form_type":"4"}},{"id":2531815,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-29T21:25:22.000Z","date":"2021-10-28","kind":"sale","acquired":false,"shares":3704,"price":80.076,"value":296601.504,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $73.96 to $74.16, 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 (2) - (8) to this Form 4."}],"balance_after":1027115,"source":{"system":"sec-edgar","filing":"0001488139-21-000131","document":"wf-form4_163545550786433.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000131/wf-form4_163545550786433.xml","form_type":"4"}},{"id":2532775,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-28T21:12:11.000Z","date":"2021-10-27","kind":"sale","acquired":false,"shares":1100,"price":74.634,"value":82097.4,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. 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These shares were sold in multiple transactions at prices ranging from $76.35 to $77.29, inclusive."}],"balance_after":1029715,"source":{"system":"sec-edgar","filing":"0001488139-21-000131","document":"wf-form4_163545550786433.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000131/wf-form4_163545550786433.xml","form_type":"4"}},{"id":2532772,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-28T21:12:11.000Z","date":"2021-10-26","kind":"sale","acquired":false,"shares":600,"price":74.617,"value":44770.2,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. 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These shares were purchased in multiple transactions at prices ranging from $74.91 to $75.85, inclusive."}],"balance_after":1036709,"source":{"system":"sec-edgar","filing":"0001488139-21-000131","document":"wf-form4_163545550786433.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000131/wf-form4_163545550786433.xml","form_type":"4"}},{"id":2532770,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-28T21:12:11.000Z","date":"2021-10-26","kind":"sale","acquired":false,"shares":1600,"price":76.335,"value":122136.0,"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 September 10, 2021."},{"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 $75.90 to $76.86, inclusive."}],"balance_after":1040309,"source":{"system":"sec-edgar","filing":"0001488139-21-000131","document":"wf-form4_163545550786433.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000131/wf-form4_163545550786433.xml","form_type":"4"}},{"id":2534539,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-26T20:46:07.000Z","date":"2021-10-25","kind":"sale","acquired":false,"shares":500,"price":72.808,"value":36404.0,"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 September 10, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.43 to $73.42, 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 (2) - (5) to this Form 4."}],"balance_after":1041909,"source":{"system":"sec-edgar","filing":"0001488139-21-000129","document":"wf-form4_163528110239308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000129/wf-form4_163528110239308.xml","form_type":"4"}},{"id":2534538,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-26T20:46:07.000Z","date":"2021-10-25","kind":"sale","acquired":false,"shares":2300,"price":74.009,"value":170220.7,"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 September 10, 2021."},{"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 $73.56 to $74.49, inclusive."}],"balance_after":1042409,"source":{"system":"sec-edgar","filing":"0001488139-21-000129","document":"wf-form4_163528110239308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000129/wf-form4_163528110239308.xml","form_type":"4"}},{"id":2534537,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-26T20:46:07.000Z","date":"2021-10-25","kind":"sale","acquired":false,"shares":4188,"price":75.361,"value":315611.868,"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 September 10, 2021."},{"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 $75.03 to $75.63, inclusive."}],"balance_after":1044709,"source":{"system":"sec-edgar","filing":"0001488139-21-000129","document":"wf-form4_163528110239308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000129/wf-form4_163528110239308.xml","form_type":"4"}},{"id":2534536,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-10-26T20:46:07.000Z","date":"2021-10-22","kind":"sale","acquired":false,"shares":5747,"price":72.358,"value":415841.426,"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 September 10, 2021."},{"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 $72.25 to $72.67, inclusive."}],"balance_after":1048897,"source":{"system":"sec-edgar","filing":"0001488139-21-000129","document":"wf-form4_163528110239308.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000129/wf-form4_163528110239308.xml","form_type":"4"}},{"id":2571944,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-09-13T20:44:55.000Z","date":"2021-09-09","kind":"sale","acquired":false,"shares":1646,"price":72.422,"value":119206.612,"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 $72.25 to $72.65, 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 (1) to this Form 4."}],"balance_after":1054644,"source":{"system":"sec-edgar","filing":"0001488139-21-000122","document":"wf-form4_163156588110732.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1496665/000148813921000122/wf-form4_163156588110732.xml","form_type":"4"}},{"id":2574753,"issuer":{"id":4847,"kind":"organization","name":"Ameresco, Inc.","symbol":"AMRC"},"owners":[{"id":17924,"kind":"person","name":"Sakellaris George P","position":1,"cik":"0001496665","reported_name":"Sakellaris George P","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Class A Common Stock","published_at":"2021-09-09T21:18:56.000Z","date":"2021-09-08","kind":"sale","acquired":false,"shares":700,"price":72.481,"value":50736.7,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. 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