Hallador Energy Co.

HNRG·NASDAQ·$19.02Share Price as of 11/2·$896MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/10/26 10-QQ1 ended 03/31/2605/06/26 10-KFY 202503/12/26 10-QQ3 ended 09/30/2511/10/25 10-QQ2 ended 06/30/2508/11/25

Disclosures

8-KCurrent report10/08/26 8-KCurrent report09/17/26 8-KCurrent report08/14/26 8-KCurrent report08/10/26 8-KCurrent report06/26/26

Prospectuses and Registrations

424B5Prospectus supplement01/14/26 424B5Prospectus supplement01/13/26 S-3ASRAutomatic shelf registration01/13/26 424B5Prospectus supplement12/16/25 S-8Registration of securities for employees06/27/25

Proxies

DEF 14ADefinitive proxy04/15/26 DEFA14AAdditional proxy materials04/15/26 DEF 14ADefinitive proxy04/17/25 DEF 14ADefinitive proxy04/19/24 DEFA14AAdditional proxy materials04/19/24

Ownership

SC 13G/ABeneficial ownership (amended)08/11/26 Form 4Insider transaction07/15/26 Form 4Insider transaction07/10/26 Form 4Insider transaction06/30/26 Form 4Insider transaction06/25/26

Other

UPLOADLetter from the SEC09/08/25 CORRESPCorrespondence with the SEC08/28/25 CORRESPCorrespondence with the SEC08/12/25 UPLOADLetter from the SEC08/06/25 UPLOADLetter from the SEC06/12/24