{"transactions":[{"id":2957171,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-12-04T21:50:23.000Z","date":"2020-12-02","kind":"sale","acquired":false,"shares":30000,"price":3.37,"value":101100.0,"ownership":{"direct":true},"balance_after":0,"source":{"system":"sec-edgar","filing":"0001437749-20-024851","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024851/rdgdoc.xml","form_type":"4"}},{"id":2957170,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-12-04T21:50:23.000Z","date":"2020-12-02","kind":"sale","acquired":false,"shares":20000,"price":3.44,"value":68800.0,"ownership":{"direct":true},"balance_after":30000,"source":{"system":"sec-edgar","filing":"0001437749-20-024851","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024851/rdgdoc.xml","form_type":"4"}},{"id":2965478,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-27T19:32:29.000Z","date":"2020-11-24","kind":"exercise","acquired":false,"shares":44000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":44000,"derivative":{"exercise_price":0.965,"exercise_date":"2017-12-07","expiration_date":"2027-12-07","underlying":"Common Stock","underlying_shares":44000},"source":{"system":"sec-edgar","filing":"0001437749-20-024516","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024516/rdgdoc.xml","form_type":"4"}},{"id":2965477,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-11-27T19:32:29.000Z","date":"2020-11-24","kind":"sale","acquired":false,"shares":44000,"price":5.64,"value":248160.0,"ownership":{"direct":true},"balance_after":50000,"source":{"system":"sec-edgar","filing":"0001437749-20-024516","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024516/rdgdoc.xml","form_type":"4"}},{"id":2965476,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-11-27T19:32:29.000Z","date":"2020-11-24","kind":"sale","acquired":false,"shares":12627,"price":6.1,"value":77024.7,"ownership":{"direct":true},"balance_after":94000,"source":{"system":"sec-edgar","filing":"0001437749-20-024516","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024516/rdgdoc.xml","form_type":"4"}},{"id":2965475,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true}}],"security":"Common Stock","published_at":"2020-11-27T19:32:29.000Z","date":"2020-11-24","kind":"exercise","acquired":true,"shares":44000,"price":0.965,"value":42460.0,"ownership":{"direct":true},"balance_after":106627,"source":{"system":"sec-edgar","filing":"0001437749-20-024516","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000143774920024516/rdgdoc.xml","form_type":"4"}},{"id":3207310,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2020-03-17T20:37:31.000Z","date":"2020-03-17","kind":"grant","acquired":true,"shares":4500,"price":0.5877,"value":2644.65,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"1. The price reported in Column 4 is a weighted average share price. The shares were purchased in multiple transactions at prices ranging from $0.529 to $0.5987, inclusive. The reporting person undertakes to provide to any security holder of Fuel Tech, 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."}],"balance_after":62627,"source":{"system":"sec-edgar","filing":"0000846913-20-000021","document":"wf-form4_158447743426707.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691320000021/wf-form4_158447743426707.xml","form_type":"4"}},{"id":3207309,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2020-03-17T20:37:31.000Z","date":"2020-03-16","kind":"grant","acquired":true,"shares":25500,"price":0.4836,"value":12331.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1. The price reported in Column 4 is a weighted average share price. The shares were purchased in multiple transactions at prices ranging from $0.43 to $0.55, inclusive. The reporting person undertakes to provide to any security holder of Fuel Tech, 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."}],"balance_after":58127,"source":{"system":"sec-edgar","filing":"0000846913-20-000021","document":"wf-form4_158447743426707.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691320000021/wf-form4_158447743426707.xml","form_type":"4"}},{"id":3427610,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2019-08-28T20:16:39.000Z","date":"2019-08-28","kind":"purchase","acquired":true,"shares":20000,"price":0.822,"value":16440.0,"ownership":{"direct":true},"balance_after":32627,"source":{"system":"sec-edgar","filing":"0000846913-19-000067","document":"wf-form4_156702337615777.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691319000067/wf-form4_156702337615777.xml","form_type":"4"}},{"id":3522408,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2019-05-17T21:19:23.000Z","date":"2019-05-17","kind":"grant","acquired":true,"shares":12627,"price":1.584,"value":20001.168,"ownership":{"direct":true},"balance_after":12627,"source":{"system":"sec-edgar","filing":"0000846913-19-000039","document":"wf-form4_155812794857287.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691319000039/wf-form4_155812794857287.xml","form_type":"4"}},{"id":3580370,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2019-03-25T20:39:36.000Z","date":"2019-03-22","kind":"sale","acquired":false,"shares":20000,"price":1.66,"value":33200.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1.The price reported in Column 4 is a weighted average share price. The shares were sold in multiple transactions at prices ranging from $1.66 to $1.70, inclusive. The reporting person undertakes to provide to any security holder of Fuel Tech, 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"}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000846913-19-000023","document":"wf-form4_155354636166638.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691319000023/wf-form4_155354636166638.xml","form_type":"4"}},{"id":4138526,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Option","published_at":"2017-12-08T21:05:23.000Z","date":"2017-12-07","kind":"grant","acquired":true,"shares":44000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":44000,"derivative":{"exercise_price":0.965,"exercise_date":"2017-12-07","expiration_date":"2027-12-07","underlying":"Common Stock","underlying_shares":44000},"source":{"system":"sec-edgar","filing":"0000846913-17-000102","document":"wf-form4_151276710948164.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691317000102/wf-form4_151276710948164.xml","form_type":"4"}},{"id":4216909,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2017-09-06T20:31:15.000Z","date":"2017-09-05","kind":"purchase","acquired":true,"shares":10000,"price":0.865,"value":8650.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average share price. The shares were purchased in multiple transactions at prices ranging from $0.86 to $0.87, inclusive. The reporting person undertakes to provide to any security holder of Fuel Tech, 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."}],"balance_after":20000,"source":{"system":"sec-edgar","filing":"0000846913-17-000073","document":"wf-form4_150472986147297.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691317000073/wf-form4_150472986147297.xml","form_type":"4"}},{"id":4218794,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2017-09-05T20:31:38.000Z","date":"2017-08-31","kind":"purchase","acquired":true,"shares":81,"price":0.929,"value":75.249,"ownership":{"direct":true},"balance_after":10000,"source":{"system":"sec-edgar","filing":"0000846913-17-000071","document":"wf-form4_150464348414442.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691317000071/wf-form4_150464348414442.xml","form_type":"4"}},{"id":4218793,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2017-09-05T20:31:38.000Z","date":"2017-08-31","kind":"purchase","acquired":true,"shares":3981,"price":0.9396,"value":3740.5476,"ownership":{"direct":true},"balance_after":9919,"source":{"system":"sec-edgar","filing":"0000846913-17-000071","document":"wf-form4_150464348414442.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691317000071/wf-form4_150464348414442.xml","form_type":"4"}},{"id":4218792,"issuer":{"id":1599,"kind":"organization","name":"FUEL TECH, INC.","symbol":"FTEK"},"owners":[{"id":144893,"kind":"person","name":"Markowsky James J","position":1,"cik":"0001698347","reported_name":"Markowsky James J","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common","published_at":"2017-09-05T20:31:38.000Z","date":"2017-08-31","kind":"purchase","acquired":true,"shares":5938,"price":0.94,"value":5581.72,"ownership":{"direct":true},"balance_after":5938,"source":{"system":"sec-edgar","filing":"0000846913-17-000071","document":"wf-form4_150464348414442.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/846913/000084691317000071/wf-form4_150464348414442.xml","form_type":"4"}}]}