Birchtech Corp. (BCHT) ownership: Top institutional holder: HEARTLAND ADVISORS INC ($1.90M). Insider activity: Net Seller (1 buys, 19 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| HEARTLAND ADVISORS INC | 1000000.00 | $1.90M | 2026-03-31 |
| CHAPIN DAVIS, INC. | 686693.00 | $1.41M | 2026-06-30 |
| Aristides Capital LLC | 425000.00 | $807500.00 | 2026-03-31 |
| WHITE PINE CAPITAL LLC | 289173.00 | $549429.00 | 2026-03-31 |
| ARS Investment Partners, LLC | 64200.00 | $131610.00 | 2026-06-30 |
| Sigma Planning Corp | 52412.00 | $99583.00 | 2026-03-31 |
| CITADEL ADVISORS LLC | 50994.00 | $96889.00 | 2026-03-31 |
| Focus Partners Wealth | 42700.00 | $81130.00 | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Buy | null | 2026-02-27 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-12 | |
| Sell | null | 2025-12-11 |
Back to BCHT overview · BCHT earnings · All congressional trades
Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.