Birchtech Corp.
Insider Ownership
| 8-K | 34 | 06/20/2025 | 06/13/2025 |
| 10-K | 34 | 03/31/2025 | 12/31/2024 |
| 8-K | 34 | 03/31/2025 | 03/28/2025 |
| 8-K | 34 | 03/04/2025 | 03/04/2025 |
| 8-K | 34 | 11/15/2024 | 10/29/2024 |
| 10-Q | 34 | 11/14/2024 | 09/30/2024 |
| 10-Q | 34 | 08/12/2024 | 06/30/2024 |
| 8-K | 34 | 08/01/2024 | 07/30/2024 |
| 8-K | 34 | 06/13/2024 | 06/07/2024 |
| 10-Q | 34 | 05/15/2024 | 03/31/2024 |
≥5% Ownership
| 4 | 06/23/2025 | 06/20/2025 | |
| 4 | 01/13/2025 | 01/09/2025 | |
| 4 | 06/26/2024 | 06/24/2024 | |
| 4 | 06/26/2024 | 06/24/2024 | |
| 4 | 01/16/2024 | 01/15/2024 | |
| 4 | 01/16/2024 | 01/15/2024 | |
| 4 | 01/16/2024 | 01/15/2024 | |
| 4 | 01/16/2024 | 01/15/2024 | |
| 4 | 01/16/2024 | 01/15/2024 | |
| 4 | 01/16/2024 | 01/15/2024 |