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 |
|---|---|---|---|
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Oct 8, 2026 | Oct 7, 2026 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure
|
Sep 17, 2026 | Sep 15, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 14, 2026 | Aug 11, 2026 |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 8-K |
Current report
Material agreement, New debt
|
Jun 26, 2026 | Jun 25, 2026 |
| 8-K |
Current report
Officer or director change
|
Jun 11, 2026 | Jun 8, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 5, 2026 | Jun 4, 2026 |
| 8-K | Current report | Jun 3, 2026 | May 28, 2026 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Jun 2, 2026 | May 30, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2026 | May 27, 2026 |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
May 6, 2026 | May 1, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| DEFA14A | Additional proxy material | Apr 15, 2026 | — |
| DEF 14A | Proxy statement | Apr 15, 2026 | May 27, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 15, 2026 | Apr 9, 2026 |
| 8-K | Current report | Mar 27, 2026 | Mar 25, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2026 | Mar 12, 2026 |
| 10-K | Annual report | Mar 12, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Mar 10, 2026 | Mar 5, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 9, 2026 | Mar 6, 2026 |
| 8-K |
Current report
Agreement ended, Other events
|
Jan 15, 2026 | Jan 13, 2026 |
| 424B5 | Prospectus supplement | Jan 14, 2026 | — |
| 424B5 | Prospectus supplement | Jan 13, 2026 | — |
| S-3ASR | Automatic shelf registration | Jan 13, 2026 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 6, 2026 | Dec 30, 2025 |
| 424B5 | Prospectus supplement | Dec 16, 2025 | — |
| 8-K |
Current report
Officer or director change
|
Dec 4, 2025 | Dec 1, 2025 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2025 | Nov 10, 2025 |
| UPLOAD | Letter from the SEC | Sep 8, 2025 | — |
| CORRESP | Letter to the SEC | Aug 28, 2025 | — |
| CORRESP | Letter to the SEC | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2025 | Aug 11, 2025 |
| UPLOAD | Letter from the SEC | Aug 6, 2025 | — |
| S-8 | Employee stock plan registration | Jun 27, 2025 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 4, 2025 | Jun 4, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 2, 2025 | May 29, 2025 |
| 8-K |
Current report
Other events
|
May 22, 2025 | May 19, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| DEF 14A | Proxy statement | Apr 17, 2025 | May 29, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 17, 2025 | Mar 17, 2025 |
| 10-K | Annual report | Mar 17, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Other events
|
Jan 7, 2025 | Jan 2, 2025 |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 3, 2024 | Sep 27, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2024 | Aug 6, 2024 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jul 3, 2024 | Jun 28, 2024 |
| UPLOAD | Letter from the SEC | Jun 12, 2024 | — |
| CORRESP | Letter to the SEC | Jun 6, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 3, 2024 | May 30, 2024 |
| CORRESP | Letter to the SEC | May 15, 2024 | — |
| UPLOAD | Letter from the SEC | May 9, 2024 | — |
| 10-Q | Quarterly report | May 7, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 7, 2024 | May 6, 2024 |
| DEFA14A | Additional proxy material | Apr 19, 2024 | — |
| DEF 14A | Proxy statement | Apr 19, 2024 | May 30, 2024 |
| 8-K |
Current report
Other events
|
Mar 28, 2024 | Mar 28, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 25, 2024 | Mar 25, 2024 |
| 10-K | Annual report | Mar 14, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 14, 2024 | Mar 13, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 23, 2024 | Feb 23, 2024 |
| 8-K |
Current report
Material agreement
|
Dec 18, 2023 | Dec 18, 2023 |
| 424B5 | Prospectus supplement | Dec 18, 2023 | — |
| EFFECT | Filing | Nov 29, 2023 | — |
| EFFECT | Filing | Nov 29, 2023 | — |
| CORRESP | Letter to the SEC | Nov 27, 2023 | — |
| CORRESP | Letter to the SEC | Nov 27, 2023 | — |
| S-3/A | Form s-3/a | Nov 17, 2023 | — |
| S-3/A | Form s-3/a | Nov 17, 2023 | — |
| 8-K |
Current report
Results of operations
|
Nov 7, 2023 | Nov 6, 2023 |
| 10-Q | Quarterly report | Nov 6, 2023 | Sep 30, 2023 |
| UPLOAD | Letter from the SEC | Nov 6, 2023 | — |
| 10-K/A | Amended annual report | Nov 1, 2023 | Dec 31, 2022 |
| CORRESP | Letter to the SEC | Oct 16, 2023 | — |
| CORRESP | Letter to the SEC | Sep 19, 2023 | — |
| UPLOAD | Letter from the SEC | Sep 12, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Sep 8, 2023 | Sep 5, 2023 |
| CORRESP | Letter to the SEC | Sep 6, 2023 | — |
| UPLOAD | Letter from the SEC | Aug 9, 2023 | — |
| UPLOAD | Letter from the SEC | Aug 9, 2023 | — |
| 8-K |
Current report
Results of operations
|
Aug 8, 2023 | Aug 7, 2023 |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 3, 2023 | Aug 3, 2023 |
| UPLOAD | Letter from the SEC | Aug 1, 2023 | — |
| S-3 | Shelf registration | Jul 19, 2023 | — |
| S-3 | Shelf registration | Jul 19, 2023 | — |
| 8-K |
Current report
Other events
|
Jul 19, 2023 | Jul 19, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Jun 1, 2023 | Jun 1, 2023 |
| 8-K |
Current report
Results of operations
|
May 9, 2023 | May 8, 2023 |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| DEFA14A | Additional proxy material | Apr 21, 2023 | — |
| DEF 14A | Proxy statement | Apr 20, 2023 | Jun 1, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 17, 2023 | Mar 16, 2023 |
| 10-K | Annual report | Mar 16, 2023 | Dec 31, 2022 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Jan 6, 2023 | Oct 21, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 15, 2022 | Nov 14, 2022 |
| 10-Q | Quarterly report | Nov 14, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Acquisition or sale of assets, Regulation FD disclosure
|
Oct 21, 2022 | Oct 21, 2022 |
| 8-K |
Current report
Material agreement
|
Oct 4, 2022 | Sep 28, 2022 |
| 8-K |
Current report
Auditor change
|
Oct 3, 2022 | Sep 27, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 16, 2022 | Aug 15, 2022 |
| 10-Q | Quarterly report | Aug 15, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Aug 11, 2022 | Aug 5, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Aug 4, 2022 | Jul 29, 2022 |
| 8-K |
Current report
Other events
|
Jul 8, 2022 | Jul 7, 2022 |
| 8-K |
Current report
Unregistered share sale, Shareholder vote results
|
Jun 15, 2022 | Jun 9, 2022 |
| 10-Q | Quarterly report | May 23, 2022 | Mar 31, 2022 |
| NT 10-Q | Form nt 10-q | May 16, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale, Regulation FD disclosure
|
May 6, 2022 | May 2, 2022 |
| DEF 14A | Proxy statement | Apr 26, 2022 | Jun 9, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 29, 2022 | Mar 28, 2022 |
| 10-K | Annual report | Mar 28, 2022 | Dec 31, 2021 |
| 8-K/A |
Amended current report
Material agreement, Regulation FD disclosure
|
Mar 11, 2022 | Feb 14, 2022 |
| UPLOAD | Letter from the SEC | Feb 22, 2022 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Feb 18, 2022 | Feb 14, 2022 |
| CORRESP | Letter to the SEC | Feb 8, 2022 | — |
| S-8 | Employee stock plan registration | Dec 29, 2021 | — |
| UPLOAD | Letter from the SEC | Dec 15, 2021 | — |
| 8-K |
Current report
Results of operations
|
Nov 9, 2021 | Nov 8, 2021 |
| 10-Q | Quarterly report | Nov 8, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2021 | Aug 9, 2021 |
| 10-Q | Quarterly report | Aug 9, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Other events
|
Jul 29, 2021 | Jul 23, 2021 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Jun 3, 2021 | Jun 1, 2021 |
| 8-K |
Current report
Results of operations
|
May 4, 2021 | May 4, 2021 |
| 10-Q | Quarterly report | May 3, 2021 | Mar 31, 2021 |
| DEF 14A | Proxy statement | Apr 20, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 9, 2021 | Mar 9, 2021 |
| 10-K | Annual report | Mar 9, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Other events
|
Dec 22, 2020 | Dec 17, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2020 | Nov 3, 2020 |
| 10-Q | Quarterly report | Nov 2, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Shareholder vote results
|
Oct 14, 2020 | Oct 9, 2020 |
| DEF 14A | Proxy statement | Aug 28, 2020 | Oct 9, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2020 | Aug 3, 2020 |
| 10-Q | Quarterly report | Aug 3, 2020 | Jun 30, 2020 |
| 10-K/A | Amended annual report | Jul 10, 2020 | Dec 31, 2019 |
| 10-K/A | Amended annual report | Jun 12, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 11, 2020 | May 11, 2020 |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Listing notice
|
May 6, 2020 | Apr 30, 2020 |
| 8-K |
Current report
Other events
|
Apr 29, 2020 | Apr 29, 2020 |
| 8-K |
Current report
Material agreement, New debt, Other events
|
Apr 16, 2020 | Apr 15, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2020 | Mar 9, 2020 |
| 10-K | Annual report | Mar 9, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Other events
|
Jan 21, 2020 | Jan 20, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2019 | Nov 4, 2019 |
| 10-Q | Quarterly report | Nov 4, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Material agreement
|
Oct 3, 2019 | Oct 2, 2019 |
| 8-K |
Current report
Other events
|
Aug 13, 2019 | Aug 12, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2019 | Aug 5, 2019 |
| 10-Q | Quarterly report | Aug 5, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2019 | May 29, 2019 |
| 8-K |
Current report
Other events
|
May 15, 2019 | May 14, 2019 |
| 8-K |
Current report
Results of operations
|
May 8, 2019 | May 6, 2019 |
| 10-Q | Quarterly report | May 6, 2019 | Mar 31, 2019 |
| DEFA14A | Additional proxy material | Apr 15, 2019 | — |
| DEF 14A | Proxy statement | Apr 12, 2019 | May 23, 2019 |
| 8-K |
Current report
Officer or director change, Other events
|
Mar 19, 2019 | Mar 13, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 13, 2019 | Mar 11, 2019 |
| 10-K | Annual report | Mar 11, 2019 | Dec 31, 2018 |
| UPLOAD | Letter from the SEC | Feb 4, 2019 | — |
| CORRESP | Letter to the SEC | Jan 18, 2019 | — |
| CORRESP | Letter to the SEC | Jan 4, 2019 | — |
| UPLOAD | Letter from the SEC | Dec 20, 2018 | — |
| 8-K |
Current report
Other events
|
Nov 13, 2018 | Nov 12, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2018 | Nov 5, 2018 |
| 10-Q | Quarterly report | Nov 5, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Auditor change
|
Oct 4, 2018 | Oct 1, 2018 |
| 8-K | Current report | Oct 3, 2018 | Sep 14, 2018 |
| 8-K |
Current report
Other events
|
Aug 16, 2018 | Aug 15, 2018 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Aug 7, 2018 | Aug 6, 2018 |
| 10-Q | Quarterly report | Aug 6, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2018 | May 23, 2018 |
| 8-K |
Current report
New debt
|
May 22, 2018 | May 21, 2018 |
| 8-K |
Current report
Other events
|
May 15, 2018 | May 14, 2018 |
| 10-Q | Quarterly report | May 7, 2018 | Mar 31, 2018 |
| DEFA14A | Additional proxy material | Apr 9, 2018 | — |
| DEF 14A | Proxy statement | Apr 9, 2018 | May 23, 2018 |
| 8-K |
Current report
Officer or director change
|
Mar 15, 2018 | Mar 9, 2018 |
| 10-K | Annual report | Mar 13, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Other events
|
Jan 5, 2018 | Jan 5, 2018 |
| 10-Q | Quarterly report | Nov 7, 2017 | Sep 30, 2017 |
| 10-Q | Quarterly report | Aug 8, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Officer or director change
|
Jun 9, 2017 | Jun 6, 2017 |
| 8-K |
Current report
Shareholder vote results, Other events
|
May 31, 2017 | May 25, 2017 |
| 8-K |
Current report
Officer or director change
|
May 17, 2017 | May 16, 2017 |
| 10-Q | Quarterly report | May 8, 2017 | Mar 31, 2017 |
| DEFA14A | Additional proxy material | Apr 13, 2017 | — |
| DEF 14A | Proxy statement | Apr 12, 2017 | May 25, 2017 |
| 10-K | Annual report | Mar 10, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Other events
|
Nov 15, 2016 | Nov 14, 2016 |
| 10-Q | Quarterly report | Nov 4, 2016 | Sep 30, 2016 |
| 8-K |
Current report
Other events
|
Aug 18, 2016 | Aug 17, 2016 |
Showing 200 filings, the most recent 200. 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.
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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)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.