| 2026-08-13 | Press release | Birchtech Reports Second Quarter 2026 Financial Results |
| 2026-08-13 | Presentation | Investor Presentation |
| 2026-08-07 | Press release | Birchtech Announces Results of Voting from Annual Meeting of Stockholders |
| 2026-08-07 | Press release | Birchtech Announces Results of Voting from Annual Meeting of Stockholders |
| 2026-08-06 | Press release | Birchtech Corp. to Host Second Quarter 2026 Earnings Call on August 13 at 5:00 p.m. Eastern Time |
| 2026-08-06 | Press release | Birchtech Corp. to Host Second Quarter 2026 Earnings Call on August 13 at 5:00 p.m. Eastern Time |
| 2026-06-10 | Press release | Birchtech Announces Promotion of Jim Trettel to Chief Operating Officer |
| 2026-06-10 | Press release | Birchtech Announces Promotion of Jim Trettel to Chief Operating Officer |
| 2026-06-03 | Press release | Birchtech Announces the End of All Remaining Attempts to Challenge Patents Under IPR Petition |
| 2026-06-03 | Press release | Birchtech Announces the End of All Remaining Attempts to Challenge Patents Under IPR Petition |
| 2026-06-02 | Presentation | Investor Presentation |
| 2026-05-28 | Press release | Birchtech to Participate in Noble Capital Markets’ Emerging Growth Virtual Equity Conference on June 3-4, 2026 |
| 2026-05-28 | Press release | Birchtech to Participate in Noble Capital Markets’ Emerging Growth Virtual Equity Conference on June 3-4, 2026 |
| 2026-05-28 | Press release | Download as PDF |
| 2026-05-20 | Presentation | Investor Presentation |
| 2026-05-13 | Press release | Birchtech Reports First Quarter 2026 Financial Results |
| 2026-05-13 | Press release | Birchtech Reports First Quarter 2026 Financial Results |
| 2026-05-13 | Press release | PDF |
| 2026-05-05 | Press release | Birchtech Announces Appointment of Respected Finance Executive Michael Mioska as Chief Financial Officer |
| 2026-05-05 | Press release | Birchtech Announces Appointment of Respected Finance Executive Michael Mioska as Chief Financial Officer |
| 2026-05-05 | Press release | Download as PDF |
| 2026-04-29 | Press release | Birchtech Corp. to Host First Quarter 2026 Earnings Call on May 13 at 5:00 p.m. Eastern Time |
| 2026-04-29 | Press release | Birchtech Corp. to Host First Quarter 2026 Earnings Call on May 13 at 5:00 p.m. Eastern Time |
| 2026-04-29 | Press release | Download as PDF |
| 2026-04-22 | Press release | Birchtech to Exhibit at Upcoming Water Industry Conferences in Spring & Summer 2026 |
| 2026-04-22 | Press release | Birchtech to Exhibit at Upcoming Water Industry Conferences in Spring & Summer 2026 |
| 2026-03-31 | Press release | Birchtech Reports Fourth Quarter 2025 Financial Results |
| 2026-03-31 | Press release | PDF |
| 2026-03-30 | Press release | Birchtech Expands Water Treatment Platform with SEA-IX™ Nuclear-Grade Ion Exchange Resin Line |
| 2025-11-13 | Press release | PDF |
| 2025-08-14 | Press release | PDF |
| 2025-05-15 | Press release | PDF |
| 2025-03-31 | Press release | PDF |
| 2024-11-27 | Proxy statement | Birchtech Corp 2024 Proxy Statement |
| 2024-11-14 | Press release | PDF |