Hallador Energy Co SEC filings HNRG

Hallador Energy Co has 881 filings in SEC EDGAR's recent list, going back to May 12, 1995. Its latest annual report, Form 10-K, was filed on Mar 12, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 10, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 8, 2026 (material agreement, new debt, regulation fd disclosure). The company's fiscal year ends on December 31.

Form Description Filed Period
424B5 Prospectus supplement Jan 14, 2026 —
424B5 Prospectus supplement Jan 13, 2026 —
S-3ASR Automatic shelf registration Jan 13, 2026 —
424B5 Prospectus supplement Dec 16, 2025 —
S-8 Employee stock plan registration Jun 27, 2025 —
424B5 Prospectus supplement Dec 18, 2023 —
S-3/A Form s-3/a Nov 17, 2023 —
S-3/A Form s-3/a Nov 17, 2023 —
S-3 Shelf registration Jul 19, 2023 —
S-3 Shelf registration Jul 19, 2023 —
S-8 Employee stock plan registration Dec 29, 2021 —
S-8 Employee stock plan registration Jan 20, 2011 —
S-8 Employee stock plan registration Dec 1, 2009 —

Showing 13 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.

Company profile

Industry
Electric Services (SIC 4911)
Listed as
HNRG (Nasdaq)
Fiscal year ends
December 31
Incorporated in
CO
Headquarters
Terre Haute, IN
SEC filer status
Accelerated filer
SEC CIK
788965
Former names
HALLADOR PETROLEUM CO (until Dec 21, 2009)

Other Electric Services companies

All 75 Electric Services companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.