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 |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 11, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 28, 2026 | — |
| 4 | Insider transaction | Jul 15, 2026 | Jul 14, 2026 |
| 4 | Insider transaction | Jul 10, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jun 30, 2026 | Jun 29, 2026 |
| 4 | Insider transaction | Jun 25, 2026 | Jun 23, 2026 |
| 4 | Insider transaction | Jun 25, 2026 | Jun 24, 2026 |
| 3 | Initial insider ownership | Jun 17, 2026 | Jun 8, 2026 |
| 4 | Insider transaction | Jun 17, 2026 | Jun 16, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| 4 | Insider transaction | Jun 1, 2026 | May 28, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 27, 2026 | — |
| 4 | Insider transaction | Apr 16, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 16, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 16, 2026 | Apr 15, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 11, 2026 | Mar 10, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Feb 27, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 21, 2026 | — |
| 3 | Initial insider ownership | Jan 20, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 16, 2026 | Jan 14, 2026 |
| 4 | Insider transaction | Jan 16, 2026 | Jan 14, 2026 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 30, 2025 |
| 4 | Insider transaction | Dec 31, 2025 | Dec 30, 2025 |
| 4 | Insider transaction | Dec 31, 2025 | Dec 30, 2025 |
| 3 | Initial insider ownership | Dec 22, 2025 | Dec 1, 2025 |
| 4 | Insider transaction | Dec 19, 2025 | Dec 17, 2025 |
| 4 | Insider transaction | Nov 21, 2025 | Nov 21, 2025 |
| 144 | Notice of proposed sale | Nov 13, 2025 | — |
| 144 | Notice of proposed sale | Nov 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 12, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 26, 2025 |
| 4 | Insider transaction | Sep 29, 2025 | Sep 25, 2025 |
| 4 | Insider transaction | Sep 24, 2025 | Sep 22, 2025 |
| 4 | Insider transaction | Aug 19, 2025 | Aug 19, 2025 |
| 144 | Notice of proposed sale | Aug 18, 2025 | — |
| 144 | Notice of proposed sale | Aug 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2025 | — |
| 3 | Initial insider ownership | Jul 14, 2025 | Jun 23, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 144 | Notice of proposed sale | May 16, 2025 | — |
| 144 | Notice of proposed sale | May 12, 2025 | — |
| 4/A | Filing | Apr 11, 2025 | Mar 31, 2025 |
| 4/A | Filing | Apr 11, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 11, 2025 | Apr 10, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Mar 31, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Mar 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Dec 18, 2024 | Dec 17, 2024 |
| 4 | Insider transaction | Dec 10, 2024 | Dec 6, 2024 |
| 4 | Insider transaction | Nov 26, 2024 | Nov 22, 2024 |
| 4 | Insider transaction | Nov 22, 2024 | Nov 20, 2024 |
| 4 | Insider transaction | Nov 20, 2024 | Nov 15, 2024 |
| 144 | Notice of proposed sale | Nov 18, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| 4 | Insider transaction | Oct 8, 2024 | Oct 4, 2024 |
| 4 | Insider transaction | Sep 17, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Sep 6, 2024 | Sep 6, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 31, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 3, 2024 | — |
| 4 | Insider transaction | Aug 30, 2024 | Jun 12, 2024 |
| 4 | Insider transaction | Aug 28, 2024 | Aug 26, 2024 |
| 4 | Insider transaction | Aug 26, 2024 | Aug 12, 2024 |
| 3 | Initial insider ownership | Aug 26, 2024 | May 30, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 16, 2024 |
| 4 | Insider transaction | Jul 23, 2024 | Jun 28, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 23, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jul 5, 2024 | — |
| 4 | Insider transaction | May 2, 2024 | Apr 30, 2024 |
| 3 | Initial insider ownership | Apr 19, 2024 | Apr 10, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 2, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 2, 2024 | — |
| 4 | Insider transaction | Apr 2, 2024 | Mar 29, 2024 |
| 4 | Insider transaction | Mar 25, 2024 | Mar 21, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 7, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 29, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 27, 2024 | — |
| 4 | Insider transaction | Feb 27, 2024 | Feb 23, 2024 |
| 4 | Insider transaction | Feb 26, 2024 | Feb 23, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 2, 2024 | — |
| 4 | Insider transaction | Dec 28, 2023 | Dec 22, 2023 |
| 4 | Insider transaction | Dec 5, 2023 | Dec 1, 2023 |
| 4 | Insider transaction | Aug 2, 2023 | Jul 31, 2023 |
| 144 | Notice of proposed sale | May 18, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 20, 2023 | — |
| 4 | Insider transaction | Apr 13, 2023 | Apr 11, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 31, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Mar 31, 2023 |
| 3 | Initial insider ownership | Mar 23, 2023 | Mar 15, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2023 | — |
| 4 | Insider transaction | Jan 20, 2023 | Jan 18, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 29, 2022 |
| 4 | Insider transaction | Nov 15, 2022 | Nov 11, 2022 |
| 4 | Insider transaction | Nov 15, 2022 | Nov 11, 2022 |
| 4 | Insider transaction | Sep 21, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 20, 2022 | Sep 16, 2022 |
| 4 | Insider transaction | Sep 15, 2022 | Sep 13, 2022 |
| 4 | Insider transaction | Sep 12, 2022 | Aug 18, 2022 |
| 4 | Insider transaction | Aug 10, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 10, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 20, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 22, 2022 | — |
| SC 13D | Ownership over 5% (active) | Jun 21, 2022 | — |
| 4 | Insider transaction | Jun 17, 2022 | Jun 15, 2022 |
| 4 | Insider transaction | Jun 13, 2022 | Jun 9, 2022 |
| 4 | Insider transaction | Jun 10, 2022 | Jun 8, 2022 |
| 4 | Insider transaction | Jun 7, 2022 | Jun 3, 2022 |
| 4 | Insider transaction | Feb 2, 2022 | Jan 31, 2022 |
| 5 | Annual insider ownership | Feb 2, 2022 | Dec 1, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| 4 | Insider transaction | Dec 20, 2021 | Dec 16, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2021 | — |
| 4 | Insider transaction | Dec 29, 2020 | Dec 28, 2020 |
| 4 | Insider transaction | Dec 18, 2020 | Dec 16, 2020 |
| 4 | Insider transaction | Dec 18, 2020 | Dec 16, 2020 |
| 4 | Insider transaction | Jul 28, 2020 | Jul 24, 2020 |
| 5 | Annual insider ownership | Feb 14, 2020 | Dec 31, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 17, 2020 | — |
| 4 | Insider transaction | Dec 18, 2019 | Dec 16, 2019 |
| 4 | Insider transaction | Dec 18, 2019 | Dec 16, 2019 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 20, 2019 | — |
| 4 | Insider transaction | Oct 15, 2019 | Oct 11, 2019 |
| SC 13G | Ownership over 5% (passive) | Oct 11, 2019 | — |
| 4 | Insider transaction | Oct 9, 2019 | Oct 7, 2019 |
| 4 | Insider transaction | Aug 14, 2019 | Aug 12, 2019 |
| 4 | Insider transaction | May 16, 2019 | May 14, 2019 |
| 3 | Initial insider ownership | Mar 22, 2019 | Mar 13, 2019 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 20, 2019 | — |
| 4 | Insider transaction | Mar 20, 2019 | Mar 18, 2019 |
| 4 | Insider transaction | Dec 18, 2018 | Dec 14, 2018 |
| 4 | Insider transaction | Dec 18, 2018 | Dec 14, 2018 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 4, 2018 | — |
| 4 | Insider transaction | Nov 15, 2018 | Nov 13, 2018 |
| 4 | Insider transaction | Nov 14, 2018 | Nov 12, 2018 |
| 4 | Insider transaction | Nov 14, 2018 | Nov 12, 2018 |
| 4 | Insider transaction | Nov 14, 2018 | Nov 12, 2018 |
| 3 | Initial insider ownership | Aug 17, 2018 | Aug 4, 2018 |
| 4 | Insider transaction | Aug 16, 2018 | Aug 15, 2018 |
| 3 | Initial insider ownership | Aug 14, 2018 | Aug 4, 2018 |
| SC 13D/A | Amended ownership over 5% (active) | May 17, 2018 | — |
| 4 | Insider transaction | May 16, 2018 | May 14, 2018 |
| 4 | Insider transaction | Feb 12, 2018 | Jan 2, 2018 |
| 5 | Annual insider ownership | Feb 12, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Dec 19, 2017 | Dec 15, 2017 |
| 4 | Insider transaction | Dec 19, 2017 | Dec 15, 2017 |
| 4 | Insider transaction | Dec 19, 2017 | Dec 15, 2017 |
| 4 | Insider transaction | Jun 30, 2017 | Nov 25, 2015 |
| 4 | Insider transaction | Jun 8, 2017 | Jun 6, 2017 |
| 4 | Insider transaction | Jun 8, 2017 | Jun 6, 2017 |
| 4 | Insider transaction | Jun 8, 2017 | Jun 6, 2017 |
| 4 | Insider transaction | May 18, 2017 | May 16, 2017 |
| 4/A | Primary document | May 18, 2017 | Dec 16, 2016 |
| 4 | Insider transaction | May 18, 2017 | May 16, 2017 |
| 4 | Insider transaction | May 18, 2017 | May 16, 2017 |
| 4 | Insider transaction | Mar 23, 2017 | Mar 21, 2017 |
| 4 | Insider transaction | Mar 21, 2017 | Mar 17, 2017 |
| 4 | Insider transaction | Dec 20, 2016 | Sep 5, 2016 |
| 4 | Insider transaction | Dec 20, 2016 | Dec 16, 2016 |
| 4 | Insider transaction | Dec 20, 2016 | Dec 16, 2016 |
| 4 | Insider transaction | Dec 9, 2016 | Nov 10, 2016 |
| 4 | Insider transaction | Nov 16, 2016 | Nov 14, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 16, 2016 | — |
| 4/A | Primary document | Oct 17, 2016 | Apr 1, 2016 |
| 4 | Insider transaction | Oct 4, 2016 | Sep 30, 2016 |
| 4 | Insider transaction | Sep 9, 2016 | Sep 7, 2016 |
| 4 | Insider transaction | Aug 22, 2016 | Aug 17, 2016 |
| 4 | Insider transaction | Aug 22, 2016 | Aug 17, 2016 |
| 4 | Insider transaction | Aug 22, 2016 | Aug 17, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 19, 2016 | — |
| 4 | Insider transaction | Aug 18, 2016 | Aug 18, 2016 |
| 4 | Insider transaction | Jul 22, 2016 | Jul 22, 2016 |
| 4 | Insider transaction | Jun 3, 2016 | May 13, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | May 19, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | May 13, 2016 | — |
| 4 | Insider transaction | May 13, 2016 | May 11, 2016 |
| 4 | Insider transaction | May 13, 2016 | May 11, 2016 |
| 4 | Insider transaction | May 13, 2016 | May 11, 2016 |
| 4 | Insider transaction | May 9, 2016 | May 5, 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.