{"filing":{"accession_number":"0001437749-26-029510","cik":"0000846913","ticker":"FTEK","company_name":"FUEL TECH, INC.","form":"8-K","filing_date":"2026-09-02","report_date":"2026-08-27","primary_document":"ftek20260828_8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/846913/000143774926029510/ftek20260828_8k.htm"},"events":[{"id":31277,"run_id":28692,"accession_number":"0001437749-26-029510","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"summary":"The filing discloses both a resignation (Vincent J. Arnone stepping down as Chairman effective September 15, 2026) and an appointment (Sharon L. Jones elected as Chairman effective September 16, 2026). While both events occur, the principal action centers on the appointment of a new Chairman to fill the vacancy, making exec_appointment the most salient classification. The change in board leadership is material to investors assessing governance and strategic direction.","company_name":"FUEL TECH, INC.","ticker":"FTEK","filing_date":"2026-09-02","form":"8-K","submitted_at":null,"items":[{"id":34109,"accession_number":"0001437749-26-029510","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The filing discloses both a resignation (Vincent J. Arnone stepping down as Chairman effective September 15, 2026) and an appointment (Sharon L. Jones elected as Chairman effective September 16, 2026). While both events occur, the principal action centers on the appointment of a new Chairman to fill the vacancy, making exec_appointment the most salient classification. The change in board leadership is material to investors assessing governance and strategic direction.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T20:05:07.738745+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":34109,"accession_number":"0001437749-26-029510","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.75,"reasoning":"The filing discloses both a resignation (Vincent J. Arnone stepping down as Chairman effective September 15, 2026) and an appointment (Sharon L. Jones elected as Chairman effective September 16, 2026). While both events occur, the principal action centers on the appointment of a new Chairman to fill the vacancy, making exec_appointment the most salient classification. The change in board leadership is material to investors assessing governance and strategic direction.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T20:05:07.738745+00:00","company_name":"FUEL TECH, INC.","ticker":"FTEK","filing_date":"2026-09-02"}]}