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 |
|---|---|---|---|
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Shareholder vote results
|
Jul 28, 2026 | Jul 23, 2026 |
| 8-K/A |
Amended current report
Officer or director change
|
May 12, 2026 | May 1, 2026 |
| 8-K |
Current report
Officer or director change
|
May 6, 2026 | May 1, 2026 |
| 8-K |
Current report
Other events
|
Apr 13, 2026 | Apr 10, 2026 |
| 8-K |
Current report
Other events
|
Mar 17, 2026 | Mar 17, 2026 |
| 8-K |
Current report
Material agreement, Other events
|
Feb 27, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Other events
|
Jan 5, 2026 | Dec 29, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change
|
Dec 29, 2025 | Dec 23, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 20, 2025 | Jun 13, 2025 |
| 8-K |
Current report
Restatement
|
Mar 31, 2025 | Mar 28, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2025 | Mar 4, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jan 6, 2025 | Dec 30, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Nov 15, 2024 | Oct 29, 2024 |
| 8-K |
Current report
Other events
|
Oct 21, 2024 | Oct 8, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Oct 17, 2024 | Oct 15, 2024 |
| 8-K |
Current report
Other events
|
Aug 1, 2024 | Jul 30, 2024 |
| 8-K |
Current report
Officer or director change
|
Jun 13, 2024 | Jun 7, 2024 |
| 8-K |
Current report
Other events
|
Mar 5, 2024 | Mar 4, 2024 |
| 8-K |
Current report
Material agreement, Results of operations, Other events
|
Mar 4, 2024 | Feb 27, 2024 |
| 8-K |
Current report
Other events
|
Jan 4, 2024 | Dec 28, 2023 |
| 8-K |
Current report
Shareholder vote results
|
Dec 7, 2023 | Dec 5, 2023 |
| 8-K |
Current report
Other events
|
Nov 14, 2023 | Nov 13, 2023 |
| 8-K |
Current report
Officer or director change
|
Nov 7, 2023 | Nov 1, 2023 |
| 8-K |
Current report
Officer or director change
|
Oct 16, 2023 | Oct 10, 2023 |
| 8-K |
Current report
Other events
|
Sep 15, 2023 | Sep 12, 2023 |
| 8-K |
Current report
Auditor change
|
Sep 14, 2023 | Sep 11, 2023 |
| 8-K |
Current report
Other events
|
Jul 10, 2023 | Jul 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 6, 2023 | Jul 3, 2023 |
| 8-K |
Current report
Officer or director change
|
May 30, 2023 | May 26, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 20, 2023 | Apr 17, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 15, 2023 | Feb 10, 2023 |
| 8-K |
Current report
Material agreement
|
Feb 3, 2023 | Jan 31, 2023 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 25, 2023 | Jan 25, 2023 |
| 8-K |
Current report
Results of operations
|
Jan 18, 2023 | Jan 18, 2023 |
| 8-K |
Current report
Officer or director change
|
Dec 7, 2022 | Dec 1, 2022 |
| 8-K |
Current report
Material agreement, Agreement ended, New debt
|
Nov 2, 2022 | Oct 28, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 30, 2022 | Sep 28, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 31, 2022 | Aug 30, 2022 |
| 8-K |
Current report
Auditor change
|
Aug 8, 2022 | Aug 3, 2022 |
| 8-K |
Current report
Unregistered share sale, Officer or director change
|
Jun 6, 2022 | May 31, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 10, 2022 | Mar 8, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Feb 25, 2022 | Feb 24, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2022 | Feb 16, 2022 |
| 8-K |
Current report
Material agreement, Other events
|
Jan 28, 2022 | Jan 24, 2022 |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2021 | Nov 22, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2021 | Oct 19, 2021 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 5, 2021 | Oct 5, 2021 |
| 8-K |
Current report
Unregistered share sale, Other events
|
Jun 28, 2021 | Jun 23, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2021 | Jun 3, 2021 |
| 8-K |
Current report
Material agreement, Other events
|
Jun 7, 2021 | Jun 1, 2021 |
| 8-K |
Current report
Officer or director change
|
May 18, 2021 | May 13, 2021 |
| 8-K |
Current report
Unregistered share sale
|
Mar 12, 2021 | Mar 8, 2021 |
| 8-K | Current report | Mar 10, 2021 | Mar 10, 2021 |
| 8-K |
Current report
Officer or director change
|
Oct 23, 2020 | Oct 21, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 23, 2020 | Sep 23, 2020 |
| 8-K |
Current report
Other events
|
Aug 6, 2020 | Aug 4, 2020 |
| 8-K |
Current report
Officer or director change
|
Jul 14, 2020 | Jul 8, 2020 |
| 8-K |
Current report
Auditor change
|
Jun 9, 2020 | Jun 3, 2020 |
| 8-K |
Current report
Other events
|
May 15, 2020 | May 15, 2020 |
| 8-K |
Current report
Restatement, Other events
|
Apr 14, 2020 | Apr 13, 2020 |
| 8-K |
Current report
Officer or director change
|
Nov 19, 2019 | Nov 15, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Oct 24, 2019 | Oct 23, 2019 |
| 8-K |
Current report
Other events
|
Jul 25, 2019 | Jul 25, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jun 27, 2019 | Jun 27, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jun 19, 2019 | Jun 18, 2019 |
| 8-K |
Current report
Unregistered share sale, Officer or director change, Other events
|
Jun 7, 2019 | Jun 4, 2019 |
| 8-K |
Current report
Unregistered share sale, Officer or director change
|
May 15, 2019 | May 14, 2019 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 1, 2019 | Feb 25, 2019 |
| 8-K |
Current report
Auditor change
|
Dec 21, 2018 | Dec 17, 2018 |
| 8-K |
Current report
Officer or director change
|
Oct 12, 2018 | Oct 8, 2018 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 18, 2018 | Sep 12, 2018 |
| 8-K |
Current report
Material agreement, New debt, Shareholder vote results
|
Jun 20, 2018 | Jun 14, 2018 |
| 8-K |
Current report
Officer or director change
|
Sep 14, 2017 | Sep 11, 2017 |
| 8-K |
Current report
Material agreement
|
Aug 4, 2017 | Jul 31, 2017 |
| 8-K |
Current report
Officer or director change
|
Jun 30, 2017 | Jun 26, 2017 |
| 8-K |
Current report
Shareholder vote results
|
Jun 9, 2017 | Jun 6, 2017 |
| 8-K |
Current report
Officer or director change
|
May 1, 2017 | Apr 27, 2017 |
| 8-K |
Current report
Acquisition or sale of assets, Unregistered share sale
|
Apr 27, 2017 | Apr 24, 2017 |
| 8-K |
Current report
Results of operations
|
Apr 24, 2017 | Apr 19, 2017 |
| 8-K |
Current report
Officer or director change
|
Mar 24, 2017 | Mar 21, 2017 |
| 8-K |
Current report
Other events
|
Feb 27, 2017 | Feb 27, 2017 |
| 8-K |
Current report
Officer or director change
|
Feb 14, 2017 | Feb 9, 2017 |
| 8-K |
Current report
Officer or director change
|
Feb 7, 2017 | Feb 1, 2017 |
| 8-K |
Current report
New debt, Unregistered share sale
|
Dec 2, 2016 | Nov 29, 2016 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Nov 15, 2016 | Nov 14, 2016 |
| 8-K |
Current report
Material agreement, Other events
|
Nov 3, 2016 | Nov 1, 2016 |
| 8-K |
Current report
Unregistered share sale
|
Oct 27, 2016 | Oct 24, 2016 |
| 8-K |
Current report
Shareholder vote results
|
Aug 12, 2016 | Aug 9, 2016 |
| 8-K |
Current report
Officer or director change
|
Jul 15, 2016 | Jul 13, 2016 |
| 8-K |
Current report
Results of operations
|
Jul 12, 2016 | Jul 12, 2016 |
| 8-K |
Current report
Officer or director change
|
Jun 9, 2016 | Jun 3, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 2, 2016 | Jun 2, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 12, 2016 | May 12, 2016 |
| 8-K |
Current report
Material agreement
|
Feb 22, 2016 | Feb 16, 2016 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Feb 3, 2016 | Jan 28, 2016 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Nov 20, 2015 | Nov 16, 2015 |
| 8-K |
Current report
Officer or director change
|
Nov 13, 2015 | Nov 9, 2015 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2015 | Aug 4, 2015 |
| 8-K |
Current report
Material agreement
|
May 8, 2015 | May 6, 2015 |
| 8-K |
Current report
Other events
|
Apr 24, 2015 | Apr 23, 2015 |
| 8-K |
Current report
Officer or director change, Other events
|
Apr 1, 2015 | Mar 30, 2015 |
| 8-K |
Current report
Officer or director change
|
Feb 26, 2015 | Feb 20, 2015 |
| 8-K |
Current report
Officer or director change
|
Dec 5, 2014 | Dec 1, 2014 |
| 8-K |
Current report
Officer or director change
|
Dec 1, 2014 | Nov 24, 2014 |
| 8-K |
Current report
Shareholder vote results
|
Nov 21, 2014 | Nov 18, 2014 |
| 8-K |
Current report
Material agreement
|
Nov 20, 2014 | Nov 16, 2014 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Oct 16, 2014 | Oct 9, 2014 |
| 8-K |
Current report
Material agreement
|
Aug 15, 2014 | Aug 14, 2014 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jun 19, 2014 | Jun 16, 2014 |
| 8-K |
Current report
Officer or director change
|
Feb 5, 2014 | Jan 30, 2014 |
| 8-K |
Current report
Officer or director change
|
Jan 16, 2014 | Jan 10, 2014 |
| 8-K |
Current report
Material agreement
|
Dec 20, 2013 | Dec 18, 2013 |
| 8-K |
Current report
Officer or director change
|
Dec 18, 2013 | Dec 12, 2013 |
| 8-K |
Current report
Unregistered share sale
|
Jul 15, 2013 | Jul 12, 2013 |
| 8-K |
Current report
Material agreement
|
Jul 3, 2013 | Jun 27, 2013 |
| 8-K/A |
Amended current report
Regulation FD disclosure
|
Jun 27, 2013 | Jun 18, 2013 |
| 8-K |
Current report
Regulation FD disclosure
|
Jun 21, 2013 | Jun 18, 2013 |
| 8-K |
Current report
Officer or director change
|
Jun 5, 2013 | Jun 1, 2013 |
| 8-K |
Current report
Material agreement
|
May 7, 2013 | May 1, 2013 |
| 8-K |
Current report
Restatement
|
Mar 27, 2012 | Mar 21, 2012 |
| 8-K |
Current report
Material agreement
|
Feb 28, 2012 | Feb 23, 2012 |
| 8-K |
Current report
Other events
|
Feb 17, 2012 | Feb 16, 2012 |
| 8-K/A |
Amended current report
Material agreement, Agreement ended, Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change
|
Jan 20, 2012 | Jun 21, 2011 |
| 8-K |
Current report
Auditor change
|
Jan 13, 2012 | Jan 9, 2012 |
| 8-K |
Current report
Other events
|
Jan 10, 2012 | Jan 10, 2012 |
| 8-K |
Current report
Officer or director change
|
Nov 7, 2011 | Nov 1, 2011 |
| 8-K |
Current report
Restatement
|
Nov 4, 2011 | Oct 31, 2011 |
| 8-K |
Current report
Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Shareholder vote results, Other events
|
Oct 14, 2011 | Oct 7, 2011 |
| 8-K/A |
Amended current report
Material agreement, Agreement ended, Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change
|
Oct 5, 2011 | Jun 21, 2011 |
| 8-K |
Current report
Unregistered share sale
|
Sep 19, 2011 | Sep 13, 2011 |
| 8-K/A |
Amended current report
Officer or director change, Regulation FD disclosure
|
Aug 10, 2011 | Jun 21, 2011 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 13, 2011 | Jul 7, 2011 |
| 8-K |
Current report
Material agreement, Agreement ended, Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change
|
Jun 27, 2011 | Jun 21, 2011 |
| 8-K |
Current report
Material agreement
|
Jun 7, 2011 | Jun 1, 2011 |
| 8-K |
Current report
Officer or director change
|
Apr 19, 2011 | Apr 15, 2011 |
| 8-K |
Current report
Agreement ended
|
Dec 15, 2010 | Nov 19, 2010 |
| 8-K |
Current report
Other events
|
Aug 6, 2009 | Aug 5, 2009 |
| 8-K |
Current report
Material agreement
|
Jan 2, 2009 | Dec 26, 2008 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Oct 16, 2008 | Oct 16, 2008 |
| 8-K |
Current report
New debt
|
Sep 19, 2008 | Sep 10, 2008 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Jun 16, 2008 | Jun 16, 2008 |
| 8-K |
Current report
Other events
|
Jun 4, 2008 | May 31, 2008 |
| 8-K |
Current report
Unregistered share sale
|
Mar 31, 2008 | Mar 31, 2008 |
| 8-K |
Current report
Other events
|
Jan 15, 2008 | Jan 10, 2008 |
| 8-K |
Current report
Auditor change
|
May 21, 2007 | May 8, 2007 |
| 8-K |
Current report
Officer or director change
|
Apr 26, 2007 | Apr 20, 2007 |
| 8-K |
Current report
Material agreement
|
Apr 27, 2006 | Apr 26, 2006 |
| 8-K |
Current report
Material agreement
|
Apr 24, 2006 | Apr 20, 2006 |
| 8-K |
Current report
Material agreement, New debt, Unregistered share sale
|
Apr 10, 2006 | Mar 23, 2006 |
| 8-K |
Current report
Material agreement
|
Feb 13, 2006 | Feb 7, 2006 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Unregistered share sale, Change in control, Officer or director change, Bylaw or fiscal year change
|
Jan 5, 2006 | Dec 29, 2005 |
| 8-K |
Current report
Material agreement
|
Jan 4, 2006 | Dec 28, 2005 |
| 8-K |
Current report
Material agreement
|
Dec 22, 2005 | Jul 20, 2005 |
| 8-K |
Current report
Material agreement
|
Dec 21, 2005 | Dec 20, 2005 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Auditor change
|
Oct 31, 2005 | Oct 25, 2005 |
| 8-K |
Current report
Unregistered share sale, Officer or director change, Other events
|
Oct 5, 2005 | Sep 30, 2005 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale
|
Sep 22, 2005 | Sep 19, 2005 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Bylaw or fiscal year change
|
Jul 21, 2005 | Jul 15, 2005 |
| 8-K |
Current report
Officer or director change
|
Jul 7, 2005 | Jul 1, 2005 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change in control
|
May 24, 2005 | May 18, 2005 |
| 8-K/A |
Amended current report
Officer or director change
|
May 3, 2005 | Apr 26, 2005 |
| 8-K |
Current report
Officer or director change
|
May 2, 2005 | Apr 26, 2005 |
| 8-K/A |
Amended current report
Change in control, Officer or director change, Other events
|
Jan 3, 2005 | Jan 3, 2005 |
| 8-K |
Current report
Change in control, Officer or director change, Other events
|
Jan 3, 2005 | Jan 3, 2005 |
Showing 164 filings. 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.