{"transactions":[{"id":709356,"issuer":{"id":5143,"kind":"organization","name":"HALLADOR ENERGY CO"},"owners":[{"id":30417,"kind":"person","name":"Sugg Barbara Ann","position":1,"cik":"0002106207","reported_name":"Sugg Barbara Ann","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2026-07-15T20:01:49.000Z","date":"2026-07-14","kind":"purchase","planned":false,"acquired":true,"shares":1300,"price":17.129,"value":22267.7,"ownership":{"direct":true},"balance_after":5000,"source":{"system":"sec-edgar","filing":"0002106207-26-000006","document":"form4-07152026_080745.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/788965/000210620726000006/form4-07152026_080745.xml","form_type":"4"}},{"id":709355,"issuer":{"id":5143,"kind":"organization","name":"HALLADOR ENERGY CO"},"owners":[{"id":30417,"kind":"person","name":"Sugg Barbara Ann","position":1,"cik":"0002106207","reported_name":"Sugg Barbara Ann","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2026-07-15T20:01:49.000Z","date":"2026-07-14","kind":"purchase","planned":false,"acquired":true,"shares":3700,"price":17.1299,"value":63380.63,"ownership":{"direct":true},"balance_after":3700,"source":{"system":"sec-edgar","filing":"0002106207-26-000006","document":"form4-07152026_080745.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/788965/000210620726000006/form4-07152026_080745.xml","form_type":"4"}},{"id":758008,"issuer":{"id":5143,"kind":"organization","name":"HALLADOR ENERGY CO"},"owners":[{"id":30417,"kind":"person","name":"Sugg Barbara Ann","position":1,"cik":"0002106207","reported_name":"Sugg Barbara Ann","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2026-06-01T18:38:33.000Z","date":"2026-05-28","kind":"grant","planned":false,"acquired":true,"shares":5375,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The Units shall fully vest May 27, 2027, subject in each case subject to Participant's continued Service through the applicable vesting date, subject to the terms and conditions set forth in the Second Amended and Restated 2008 Restricted Stock Unit Plan and Award Agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The Units shall fully vest May 27, 2027, subject in each case subject to Participant's continued Service through the applicable vesting date, subject to the terms and conditions set forth in the Second Amended and Restated 2008 Restricted Stock Unit Plan and Award Agreement."},{"field":"derivative.underlying","element":"underlyingSecurityTitle","label":"F1","text":"Each Restricted Stock Unit represents a contingent right to receive one share of Hallador Energy Common Stock. Vested shares will be delivered to the reporting person pursuant to the terms of the Second Amended and Restated 2008 Restricted Stock Unit Plan."}],"balance_after":5375,"derivative":{"underlying":"Common Stock","underlying_shares":5375},"source":{"system":"sec-edgar","filing":"0002106207-26-000004","document":"form4-06012026_060629.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/788965/000210620726000004/form4-06012026_060629.xml","form_type":"4"}}]}