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HALLADOR ENERGY CO — 424B5 Filings

4 424B5 filings on record

This page lists all 424B5 filings submitted to the SEC by HALLADOR ENERGY CO (HNRG), sorted by most recent first. Each row links to the full filing on EdgarLookup. HALLADOR ENERGY CO has filed 4 424B5 documents with the SEC since 1995. To view all SEC filings by HALLADOR ENERGY CO, see the full filings list.

Overview All Filings Financials Insiders
All 10-K 10-K/A 10-K405 10-Q 10-Q/A 10KSB 10KSB/A 10KSB40 10QSB 10QSB/A 144 3 3/A 4 4/A 424B5 5 8-A12B 8-K 8-K/A CERTNAS CORRESP D DEF 14A DEF 14C DEFA14A EFFECT NT 10-K NT 10-Q PRE 14A S-3 S-3/A S-3ASR S-8 SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD
Form Description Accession Number Filed Period
424B5 424B5 0001104659-26-003768 Jan 14, 2026 —
424B5 424B5 0001104659-26-003347 Jan 13, 2026 —
424B5 424B5 0001104659-25-121575 Dec 16, 2025 —
424B5 424B5 0001104659-23-126641 Dec 18, 2023 —