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 |
|---|---|---|---|
| 10-Q | Quarterly report | Aug 13, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Shareholder vote results
|
Jul 28, 2026 | Jul 23, 2026 |
| ARS | Annual report to shareholders | Jun 24, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Jun 24, 2026 | Jul 23, 2026 |
| PRE 14A | Preliminary proxy statement | Jun 8, 2026 | Jul 23, 2026 |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 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 |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| 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 |
| 424B4 | Prospectus | Feb 27, 2026 | — |
| CERT | Nyse american certification | Feb 25, 2026 | — |
| EFFECT | Filing | Feb 17, 2026 | — |
| CORRESP | Letter to the SEC | Feb 12, 2026 | — |
| CORRESP | Letter to the SEC | Feb 12, 2026 | — |
| CORRESP | Letter to the SEC | Feb 12, 2026 | — |
| CORRESP | Letter to the SEC | Feb 12, 2026 | — |
| S-1/A | Amended registration statement | Feb 12, 2026 | — |
| 8-A12B | Form 8-a12b | Feb 11, 2026 | — |
| CORRESP | Letter to the SEC | Feb 9, 2026 | — |
| CORRESP | Letter to the SEC | Feb 9, 2026 | — |
| S-1/A | Amended registration statement | Feb 3, 2026 | — |
| S-1 | Registration statement | Jan 13, 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 |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| DRS | Filing | Oct 23, 2025 | — |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 20, 2025 | Jun 13, 2025 |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 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 |
| ARS | Annual report to shareholders | Nov 27, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Nov 27, 2024 | Nov 27, 2024 |
| 8-K |
Current report
Bylaw or fiscal year change, Other events
|
Nov 15, 2024 | Oct 29, 2024 |
| 10-Q | Quarterly report | Nov 14, 2024 | Sep 30, 2024 |
| PRE 14A | Preliminary proxy statement | Nov 13, 2024 | Dec 30, 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 |
| 10-Q | Quarterly report | Aug 12, 2024 | Jun 30, 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 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| 10-K | Annual report | Apr 16, 2024 | Dec 31, 2023 |
| NT 10-K | Filing | Apr 1, 2024 | Dec 31, 2023 |
| 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 |
| 10-Q | Quarterly report | Nov 20, 2023 | Sep 30, 2023 |
| NT 10-Q | Filing | Nov 14, 2023 | Sep 30, 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 |
| ARS | Annual report to shareholders | Nov 6, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Nov 3, 2023 | Nov 3, 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 |
| 10-Q | Quarterly report | Aug 16, 2023 | Jun 30, 2023 |
| NT 10-Q | Filing | Aug 14, 2023 | Jun 30, 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 |
| 10-Q/A | Amended quarterly report | Jun 7, 2023 | Mar 31, 2023 |
| 10-Q | Quarterly report | Jun 6, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Officer or director change
|
May 30, 2023 | May 26, 2023 |
| NT 10-Q | Filing | May 15, 2023 | Mar 31, 2023 |
| 10-K | Annual report | May 15, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Apr 20, 2023 | Apr 17, 2023 |
| NT 10-K | Filing | Mar 31, 2023 | Dec 31, 2022 |
| 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 |
| 10-Q | Quarterly report | Nov 14, 2022 | Sep 30, 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 |
| RW | Filing | Aug 24, 2022 | — |
| 10-Q | Quarterly report | Aug 15, 2022 | Jun 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 |
| 10-Q | Quarterly report | May 18, 2022 | Mar 31, 2022 |
| NT 10-Q | Filing | May 16, 2022 | Mar 31, 2022 |
| 10-K | Annual report | Apr 5, 2022 | Dec 31, 2021 |
| NT 10-K | Filing | Mar 31, 2022 | Dec 31, 2021 |
| 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 |
| DEFA14A | Additional proxy material | Feb 7, 2022 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jan 28, 2022 | Jan 24, 2022 |
| DEF 14A | Proxy statement | Jan 24, 2022 | Jan 24, 2022 |
| PRE 14A | Preliminary proxy statement | Jan 10, 2022 | Jan 10, 2022 |
| 8-K |
Current report
Officer or director change
|
Nov 26, 2021 | Nov 22, 2021 |
| 10-Q | Quarterly report | Nov 15, 2021 | Sep 30, 2021 |
| S-1 | Registration statement | Nov 10, 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 |
| 10-Q | Quarterly report | Aug 16, 2021 | Jun 30, 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 |
| DEFA14A | Additional proxy material | May 21, 2021 | — |
| 8-K |
Current report
Officer or director change
|
May 18, 2021 | May 13, 2021 |
| 10-Q | Quarterly report | May 17, 2021 | Mar 31, 2021 |
| DEF 14A | Proxy statement | Apr 30, 2021 | Jun 3, 2021 |
| PRE 14A | Preliminary proxy statement | Apr 16, 2021 | Apr 16, 2021 |
| 10-K | Annual report | Apr 5, 2021 | Dec 31, 2020 |
| NT 10-K | Filing | Mar 31, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Unregistered share sale
|
Mar 12, 2021 | Mar 8, 2021 |
| 8-K | Current report | Mar 10, 2021 | Mar 10, 2021 |
| 10-Q | Quarterly report | Nov 23, 2020 | Sep 30, 2020 |
| NT 10-Q | Filing | Nov 16, 2020 | Sep 30, 2020 |
| 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 |
| 10-Q | Quarterly report | Aug 19, 2020 | Jun 30, 2020 |
| NT 10-Q | Filing | Aug 14, 2020 | Jun 30, 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 |
| 10-Q | Quarterly report | Jul 6, 2020 | Mar 31, 2020 |
| NT 10-Q | Filing | Jun 29, 2020 | Mar 31, 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 |
| 10-K | Annual report | May 14, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Restatement, Other events
|
Apr 14, 2020 | Apr 13, 2020 |
| NT 10-K | Filing | Mar 30, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Officer or director change
|
Nov 19, 2019 | Nov 15, 2019 |
| 10-Q | Quarterly report | Nov 14, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Oct 24, 2019 | Oct 23, 2019 |
| D/A | Filing | Aug 21, 2019 | — |
| 10-Q | Quarterly report | Aug 14, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Other events
|
Jul 25, 2019 | Jul 25, 2019 |
| D | Filing | Jun 28, 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 |
| 10-Q | Quarterly report | May 15, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Unregistered share sale, Officer or director change
|
May 15, 2019 | May 14, 2019 |
| 10-K/A | Amended annual report | Apr 30, 2019 | Dec 31, 2018 |
| 10-K | Annual report | Apr 11, 2019 | Dec 31, 2018 |
| NT 10-K | Filing | Apr 1, 2019 | Dec 31, 2018 |
| 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 |
| 10-Q | Quarterly report | Nov 13, 2018 | Sep 30, 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 |
| 10-Q | Quarterly report | Aug 14, 2018 | Jun 30, 2018 |
| D | Filing | Jun 28, 2018 | — |
| 8-K |
Current report
Material agreement, New debt, Shareholder vote results
|
Jun 20, 2018 | Jun 14, 2018 |
| 10-Q | Quarterly report | May 21, 2018 | Mar 31, 2018 |
| NT 10-Q | Filing | May 14, 2018 | Mar 31, 2018 |
| DEF 14A | Proxy statement | Apr 30, 2018 | Apr 30, 2018 |
| 10-K | Annual report | Apr 17, 2018 | Dec 31, 2017 |
| NT 10-K | Filing | Apr 2, 2018 | Dec 31, 2017 |
| 10-Q | Quarterly report | Nov 20, 2017 | Sep 30, 2017 |
| NT 10-Q | Filing | Nov 14, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Officer or director change
|
Sep 14, 2017 | Sep 11, 2017 |
| 10-Q | Quarterly report | Aug 21, 2017 | Jun 30, 2017 |
| NT 10-Q | Filing | Aug 14, 2017 | Jun 30, 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 |
| 10-Q | Quarterly report | May 15, 2017 | Mar 31, 2017 |
| DEF 14A | Proxy statement | May 1, 2017 | May 1, 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 |
| 10-K | Annual report | Mar 28, 2017 | Dec 31, 2016 |
| 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 |
| 424B3 | Prospectus | Jan 11, 2017 | — |
| EFFECT | Filing | Jan 10, 2017 | — |
| CORRESP | Letter to the SEC | Jan 6, 2017 | — |
| UPLOAD | Letter from the SEC | Jan 6, 2017 | — |
| S-1 | Registration statement | Dec 23, 2016 | — |
| 8-K |
Current report
New debt, Unregistered share sale
|
Dec 2, 2016 | Nov 29, 2016 |
| D | Filing | Nov 22, 2016 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Nov 15, 2016 | Nov 14, 2016 |
| 10-Q | Quarterly report | Nov 15, 2016 | Sep 30, 2016 |
| NT 10-Q | Filing | Nov 15, 2016 | Sep 30, 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 |
| 10-Q | Quarterly report | Aug 8, 2016 | Jun 30, 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 |
| DEF 14A | Proxy statement | Jul 6, 2016 | Jul 6, 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 |
| 10-Q | Quarterly report | May 16, 2016 | Mar 31, 2016 |
| 8-K |
Current report
Regulation FD disclosure
|
May 12, 2016 | May 12, 2016 |
| 10-K/A | Amended annual report | Apr 29, 2016 | Dec 31, 2015 |
| 10-K | Annual report | Mar 30, 2016 | Dec 31, 2015 |
| 8-K |
Current report
Material agreement
|
Feb 22, 2016 | Feb 16, 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
- 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.