HALLADOR ENERGY CO — 4/A Filings
12 4/A filings on record
This page lists all 4/A 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 12 4/A documents with the SEC since 1995. To view all SEC filings by HALLADOR ENERGY CO, see the full filings list.
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 |
|---|---|---|---|---|
| 4/A | — | 0001415889-25-010597 | Apr 11, 2025 | Mar 31, 2025 |
| 4/A | — | 0001415889-25-010585 | Apr 11, 2025 | Mar 31, 2025 |
| 4/A | PRIMARY DOCUMENT | 0000788965-17-000012 | May 18, 2017 | Dec 16, 2016 |
| 4/A | PRIMARY DOCUMENT | 0001424577-16-000005 | Oct 17, 2016 | Apr 1, 2016 |
| 4/A | PRIMARY DOCUMENT | 0001424577-14-000007 | Dec 19, 2014 | Dec 16, 2014 |
| 4/A | OWNERSHIP DOCUMENT | 0001144204-13-068547 | Dec 20, 2013 | Dec 13, 2013 |
| 4/A | OWNERSHIP DOCUMENT | 0001144204-13-068545 | Dec 20, 2013 | Dec 13, 2013 |
| 4/A | OWNERSHIP DOCUMENT | 0001144204-13-068543 | Dec 20, 2013 | Dec 13, 2013 |
| 4/A | — | 0001144204-11-013068 | Mar 4, 2011 | Mar 1, 2011 |
| 4/A | PRIMARY DOCUMENT | 0001424577-11-000004 | Feb 11, 2011 | — |
| 4/A | PRIMARY DOCUMENT | 0001425718-08-000016 | Oct 8, 2008 | Oct 6, 2008 |
| 4/A | PRIMARY DOCUMENT | 0001425718-08-000013 | Sep 5, 2008 | Sep 4, 2008 |