{"transactions":[{"id":4511720,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Stock Option (right to buy)","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-28","kind":"exercise","acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":280000,"derivative":{"exercise_price":3.78,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511719,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Stock Option (right to buy)","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-27","kind":"exercise","acquired":false,"shares":4072,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":290000,"derivative":{"exercise_price":3.78,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":4072},"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511718,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Stock Option (right to buy)","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-23","kind":"exercise","acquired":false,"shares":5928,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested."}],"balance_after":294072,"derivative":{"exercise_price":3.78,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":5928},"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511717,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-28","kind":"sale","acquired":false,"shares":10000,"price":14.2293,"value":142293.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price reflects a weighted average price for multiple transactions that ranged from $14.09 to $14.38 per share.  The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":146029,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511716,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-28","kind":"exercise","acquired":true,"shares":10000,"price":3.78,"value":37800.0,"ownership":{"direct":true},"balance_after":156029,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511715,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-27","kind":"sale","acquired":false,"shares":4072,"price":14.3,"value":58229.6,"ownership":{"direct":true},"balance_after":146029,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511714,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-27","kind":"exercise","acquired":true,"shares":4072,"price":3.78,"value":15392.16,"ownership":{"direct":true},"balance_after":150101,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511713,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-23","kind":"sale","acquired":false,"shares":5928,"price":14.3108,"value":84834.4224,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Price reflects a weighted average price for multiple transactions that ranged from $14.30 to $14.34 per share.  The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":146029,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4511712,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-28T22:15:13.000Z","date":"2016-12-23","kind":"exercise","acquired":true,"shares":5928,"price":3.78,"value":22407.84,"ownership":{"direct":true},"balance_after":151957,"source":{"system":"sec-edgar","filing":"0000899243-16-036361","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036361/doc4.xml","form_type":"4"}},{"id":4512997,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Stock Option (right to buy)","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-22","kind":"exercise","acquired":false,"shares":15000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This option is fully vested."}],"balance_after":300000,"derivative":{"exercise_price":3.78,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}},{"id":4512996,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Stock Option (right to buy)","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-21","kind":"exercise","acquired":false,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This option is fully vested."}],"balance_after":315000,"derivative":{"exercise_price":3.78,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}},{"id":4512995,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-22","kind":"sale","acquired":false,"shares":15000,"price":14.35,"value":215250.0,"ownership":{"direct":true},"balance_after":146029,"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}},{"id":4512994,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-22","kind":"exercise","acquired":true,"shares":15000,"price":3.78,"value":56700.0,"ownership":{"direct":true},"balance_after":161029,"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}},{"id":4512993,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-21","kind":"sale","acquired":false,"shares":25000,"price":14.3877,"value":359692.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Price reflects a weighted average price for multiple transactions that ranged from $14.23 to $14.54 per share.  The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":146029,"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}},{"id":4512992,"issuer":{"id":4034,"kind":"organization","name":"CECO ENVIRONMENTAL CORP"},"owners":[{"id":180177,"kind":"person","name":"Lang Jeffrey","position":1,"cik":"0001484378","reported_name":"Lang Jeffrey","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO and President"}}],"security":"Common Stock","published_at":"2016-12-23T16:48:29.000Z","date":"2016-12-21","kind":"exercise","acquired":true,"shares":25000,"price":3.78,"value":94500.0,"ownership":{"direct":true},"balance_after":171029,"source":{"system":"sec-edgar","filing":"0000899243-16-036278","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/3197/000089924316036278/doc4.xml","form_type":"4"}}]}