Birchtech Corp. SEC filings BCHT
Birchtech Corp. has 807 filings in SEC EDGAR's recent list, going back to Aug 9, 2001. Its latest annual report, Form ARS, was filed on Jun 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 13, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Jul 28, 2026 (change to shareholder rights, bylaw or fiscal year change, shareholder vote results). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 5, 2026 | — |
| 3 | Initial insider ownership | May 6, 2026 | May 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 12, 2025 |
| 4 | Insider transaction | Dec 15, 2025 | Dec 11, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jun 23, 2025 | Jun 20, 2025 |
| 4 | Insider transaction | Jan 13, 2025 | Jan 9, 2025 |
| 3 | Initial insider ownership | Jan 6, 2025 | Dec 30, 2024 |
| 4 | Insider transaction | Jun 26, 2024 | Jun 24, 2024 |
| 4 | Insider transaction | Jun 26, 2024 | Jun 24, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 13, 2024 | — |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Jan 16, 2024 | Jan 15, 2024 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 11, 2023 |
| 4 | Insider transaction | Dec 13, 2023 | Dec 11, 2023 |
| 4 | Insider transaction | Dec 4, 2023 | Nov 30, 2023 |
| 4 | Insider transaction | Dec 4, 2023 | Nov 30, 2023 |
| 3 | Initial insider ownership | Nov 7, 2023 | Nov 1, 2023 |
| 4 | Insider transaction | Nov 2, 2023 | Oct 31, 2023 |
| 4 | Insider transaction | Nov 2, 2023 | Oct 31, 2023 |
| 4 | Insider transaction | Nov 2, 2023 | Oct 31, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Sep 29, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 4 | Insider transaction | Oct 2, 2023 | Sep 29, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 28, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 28, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 28, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Jun 30, 2023 | Jun 28, 2023 |
| 4 | Insider transaction | Jun 7, 2023 | Jun 7, 2023 |
| 4 | Insider transaction | Jun 7, 2023 | Jun 5, 2023 |
| 3 | Initial insider ownership | Jun 2, 2023 | May 26, 2023 |
| 3 | Initial insider ownership | Mar 1, 2023 | Mar 1, 2023 |
| 4 | Insider transaction | Feb 22, 2023 | Feb 20, 2023 |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Feb 3, 2023 | Feb 1, 2023 |
| 4 | Insider transaction | Nov 17, 2022 | Nov 15, 2022 |
| 4 | Insider transaction | Nov 10, 2022 | Nov 8, 2022 |
| 4 | Insider transaction | Nov 1, 2022 | Oct 28, 2022 |
| 4 | Insider transaction | Sep 6, 2022 | Sep 2, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Jun 2, 2022 | May 31, 2022 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Jul 1, 2021 | Jun 29, 2021 |
| 4 | Insider transaction | May 7, 2021 | May 1, 2021 |
| 4 | Insider transaction | Apr 21, 2021 | Apr 19, 2021 |
| 4 | Insider transaction | Mar 22, 2021 | Mar 22, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 27, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 27, 2021 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 16, 2020 | Dec 14, 2020 |
| 4 | Insider transaction | Dec 1, 2020 | Nov 30, 2020 |
| 4 | Insider transaction | Dec 1, 2020 | Nov 30, 2020 |
| 3 | Initial insider ownership | Oct 30, 2020 | Oct 21, 2020 |
| 4 | Insider transaction | Jul 9, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 9, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 9, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 9, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 9, 2020 | Jul 8, 2020 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 4 | Insider transaction | Jul 1, 2019 | Jun 28, 2019 |
| 3 | Initial insider ownership | Jun 12, 2019 | Jun 5, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | May 15, 2019 | May 14, 2019 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Jan 3, 2019 | Dec 31, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Dec 4, 2018 | Nov 30, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 4 | Insider transaction | Nov 2, 2018 | Oct 31, 2018 |
| 3 | Initial insider ownership | Oct 15, 2018 | Oct 8, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Oct 1, 2018 | Sep 30, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Sep 5, 2018 | Aug 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Aug 2, 2018 | Jul 31, 2018 |
| 4 | Insider transaction | Jul 9, 2018 | Jul 6, 2018 |
| 4 | Insider transaction | Jul 9, 2018 | Jul 6, 2018 |
| 4 | Insider transaction | Jul 9, 2018 | Jul 6, 2018 |
| 4 | Insider transaction | Jul 3, 2018 | Jun 30, 2018 |
| 4 | Insider transaction | Jul 3, 2018 | Jun 30, 2018 |
| 4 | Insider transaction | Jul 3, 2018 | Jun 30, 2018 |
| 4/A | Primary document | Jun 12, 2018 | Jun 8, 2018 |
| 4 | Insider transaction | Jun 12, 2018 | Jun 8, 2018 |
| 4 | Insider transaction | Jun 12, 2018 | Jun 8, 2018 |
| 4 | Insider transaction | Jun 12, 2018 | Jun 8, 2018 |
| 4 | Insider transaction | Feb 27, 2018 | Feb 23, 2018 |
| 4 | Insider transaction | Feb 27, 2018 | Feb 23, 2018 |
| 4 | Insider transaction | Feb 27, 2018 | Feb 23, 2018 |
| 4 | Insider transaction | Feb 7, 2018 | Feb 5, 2018 |
| 4 | Insider transaction | Feb 7, 2018 | Feb 5, 2018 |
| 4 | Insider transaction | Feb 7, 2018 | Feb 5, 2018 |
| 4 | Insider transaction | Aug 29, 2017 | Aug 25, 2017 |
| 4 | Insider transaction | Aug 29, 2017 | Aug 25, 2017 |
| 4 | Insider transaction | Jun 7, 2017 | Jun 6, 2017 |
| 4 | Insider transaction | Jun 2, 2017 | May 23, 2017 |
| 4 | Insider transaction | May 1, 2017 | Apr 27, 2017 |
| 4 | Insider transaction | May 1, 2017 | Apr 27, 2017 |
| 4 | Insider transaction | Feb 14, 2017 | Feb 10, 2017 |
| 4 | Insider transaction | Feb 14, 2017 | Feb 10, 2017 |
| 4 | Insider transaction | Feb 14, 2017 | Feb 10, 2017 |
| 4 | Insider transaction | Feb 3, 2017 | Feb 1, 2017 |
| 4 | Insider transaction | Feb 3, 2017 | Feb 1, 2017 |
| 4 | Insider transaction | Feb 3, 2017 | Feb 1, 2017 |
| 4 | Insider transaction | Feb 3, 2017 | Feb 1, 2017 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 5, 2016 | — |
| 4 | Insider transaction | Dec 2, 2016 | Nov 29, 2016 |
| 4 | Insider transaction | Nov 22, 2016 | Nov 18, 2016 |
| 4 | Insider transaction | Sep 2, 2016 | Aug 31, 2016 |
| 4 | Insider transaction | Sep 2, 2016 | Aug 31, 2016 |
| 4 | Insider transaction | Aug 2, 2016 | Jul 31, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| 4 | Insider transaction | Jul 5, 2016 | Jun 30, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 24, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 24, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 16, 2016 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 16, 2016 | — |
| 3 | Initial insider ownership | Jun 10, 2016 | Jun 3, 2016 |
| 4 | Insider transaction | Jun 2, 2016 | May 31, 2016 |
| 4 | Insider transaction | May 3, 2016 | May 1, 2016 |
| 4 | Insider transaction | May 3, 2016 | May 1, 2016 |
| 4 | Insider transaction | May 3, 2016 | May 1, 2016 |
| 4 | Insider transaction | May 2, 2016 | Apr 30, 2016 |
| 4 | Insider transaction | Apr 4, 2016 | Mar 31, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 7, 2016 | — |
| 4 | Insider transaction | Mar 2, 2016 | Feb 29, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 8, 2016 | — |
| 4 | Insider transaction | Feb 1, 2016 | Jan 28, 2016 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Dec 28, 2015 | Dec 23, 2015 |
| 4 | Insider transaction | Dec 9, 2015 | Dec 7, 2015 |
| 4 | Insider transaction | Dec 9, 2015 | Dec 7, 2015 |
| 4 | Insider transaction | Dec 2, 2015 | Nov 30, 2015 |
| 4 | Insider transaction | Nov 23, 2015 | Nov 16, 2015 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 19, 2015 | — |
| 4 | Insider transaction | Nov 18, 2015 | Nov 16, 2015 |
| 4 | Insider transaction | Nov 2, 2015 | Oct 31, 2015 |
| 4 | Insider transaction | Oct 2, 2015 | Sep 30, 2015 |
| 4 | Insider transaction | Sep 30, 2015 | Sep 11, 2015 |
| 3 | Initial insider ownership | Sep 30, 2015 | Jan 1, 2014 |
| 4 | Insider transaction | Sep 29, 2015 | Sep 28, 2015 |
| 4 | Insider transaction | Sep 29, 2015 | Sep 28, 2015 |
| 4 | Insider transaction | Sep 29, 2015 | Sep 23, 2015 |
| 4 | Insider transaction | Sep 16, 2015 | Sep 11, 2015 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 10, 2015 | — |
| 4 | Insider transaction | Sep 2, 2015 | Aug 31, 2015 |
| 4 | Insider transaction | Aug 3, 2015 | Jul 31, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 28, 2015 |
| 4 | Insider transaction | Jul 30, 2015 | Jul 28, 2015 |
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
- Measuring & Controlling Devices, NEC (SIC 3829)
- Listed as
- BCHT (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Corsicana, TX
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 728385
- Former names
- Midwest Energy Emissions Corp. (until Aug 12, 2024); China Youth Media, Inc. (until Oct 6, 2011); DIGICORP, INC. (until Sep 25, 2008); DIGICORP (until Mar 31, 2008)
Other Measuring & Controlling Devices, NEC companies
- Thermo Fisher Scientific Inc. TMO
- Rockwell Automation, Inc ROK
- Trimble Inc. TRMB
- Onto Innovation Inc. ONTO
- Mirion Technologies, Inc. MIR
- Quantum-Si Inc QSI
- Owlet, Inc. OWLT
- Geospace Technologies Corp GEOS
Source: SEC EDGAR filings. This is company-reported data, not investment advice.