Birchtech Corp. also files under MEEC, CHYUD, CHYU, CHYU.OB, DGCO.OB, GCO.OB, DGCO; those filings are included.
The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Feb 27, 2026 | MacPherson Richard | President and CEO, Director, 10% Owner | Buy(P) | 313K | $2.40 | $750K |
| Dec 12, 2025 | Kaye David M | Director | Option exercise(M) | 250K | — | $0 |
| Dec 12, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 310K | $0.93 | $289K |
| Dec 12, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 500K | $0.58 | $290K |
| Dec 12, 2025 | Kaye David M | Director | Option exercise(M) | 250K | $0.58 | $145K |
| Dec 12, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 500K | — | $0 |
| Dec 12, 2025 | Kaye David M | Director | Tax withholding(F) | 155K | $0.93 | $144K |
| Dec 11, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 300K | $0.58 | $174K |
| Dec 11, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 300K | — | $0 |
| Dec 11, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 191K | $0.91 | $173K |
| Jun 20, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 181K | $0.52 | $94K |
| Jun 20, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 500K | — | $0 |
| Jun 20, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 500K | $0.19 | $95K |
| Jun 20, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 500K | — | $0 |
| Jun 20, 2025 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 500K | $0.19 | $95K |
| Jun 20, 2025 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 181K | $0.52 | $94K |
| Jan 9, 2025 | Coogler Mitzi H | Director | Grant(A) | 100K | — | $0 |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 600K | — | $0 |
| Jun 24, 2024 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 1.5M | $0.27 | $405K |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 245K | $0.66 | $162K |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 600K | $0.27 | $162K |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 682K | $0.66 | $450K |
| Jun 24, 2024 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 1.5M | — | $0 |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 1.0M | $0.45 | $450K |
| Jun 24, 2024 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 614K | $0.66 | $405K |
| Jun 24, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 1.0M | — | $0 |
| Jan 15, 2024 | Pavlish John | Senior VP/Chief Tech Officer | Grant(A) | 100K | — | $0 |
| Jan 15, 2024 | Greenberg Christopher | Chairman of the Board, Director | Grant(A) | 200K | — | $0 |
| Jan 15, 2024 | Kaye David M | Director | Grant(A) | 100K | — | $0 |
| Jan 15, 2024 | Trettel James | Vice President of Operations | Grant(A) | 200K | — | $0 |
| Jan 15, 2024 | MacPherson Richard | President and CEO, Director, 10% Owner | Grant(A) | 300K | — | $0 |
| Jan 15, 2024 | Grant Troy J | Director | Grant(A) | 50K | — | $0 |
| Jan 15, 2024 | Fitzmaurice Fiona | Chief Financial Officer | Grant(A) | 25K | — | $0 |
| Dec 11, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.25 | $2K |
| Dec 11, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Dec 11, 2023 | Kaye David M | Director | Tax withholding(F) | 2K | $0.99 | $2K |
| Dec 11, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Dec 11, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 3K | $0.99 | $3K |
| Dec 11, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.25 | $3K |
| Nov 30, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.33 | $5K |
| Nov 30, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 5K | $0.98 | $5K |
| Nov 30, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Nov 30, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Nov 30, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.33 | $2K |
| Nov 30, 2023 | Kaye David M | Director | Tax withholding(F) | 2K | $0.98 | $2K |
| Oct 31, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Oct 31, 2023 | Kaye David M | Director | Tax withholding(F) | 3K | $0.41 | $1K |
| Oct 31, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Oct 31, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 7K | $0.41 | $3K |
| Oct 31, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | — | $0 |
| Oct 31, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 8K | $0.41 | $3K |
| Oct 31, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | $0.20 | $3K |
| Oct 31, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.20 | $1K |
| Oct 31, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.20 | $3K |
| Sep 29, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Sep 29, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | — | $0 |
| Sep 29, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 9K | $0.39 | $4K |
| Sep 29, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.26 | $4K |
| Sep 29, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | $0.26 | $4K |
| Sep 29, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 11K | $0.39 | $4K |
| Sep 29, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.26 | $2K |
| Sep 29, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Sep 29, 2023 | Kaye David M | Director | Tax withholding(F) | 4K | $0.39 | $2K |
| Jul 28, 2023 | Kaye David M | Director | Tax withholding(F) | 3K | $0.33 | $1K |
| Jul 28, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.17 | $1K |
| Jul 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Jul 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.17 | $2K |
| Jul 28, 2023 | MacPherson Richard | President and CEO, Director | Option exercise(M) | 16K | $0.17 | $3K |
| Jul 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 7K | $0.33 | $2K |
| Jul 28, 2023 | MacPherson Richard | President and CEO, Director | Option exercise(M) | 16K | — | $0 |
| Jul 28, 2023 | MacPherson Richard | President and CEO, Director | Tax withholding(F) | 8K | $0.33 | $3K |
| Jul 28, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Jun 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | $0.21 | $3K |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 8K | — | $0 |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 8K | $0.30 | $2K |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | — | $0 |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 16K | $0.21 | $3K |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 12K | $0.30 | $3K |
| Jun 28, 2023 | Kaye David M | Director | Option exercise(M) | 6K | — | $0 |
| Jun 28, 2023 | Kaye David M | Director | Tax withholding(F) | 4K | $0.30 | $1K |
| Jun 28, 2023 | Kaye David M | Director | Option exercise(M) | 6K | $0.21 | $1K |
| Jun 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 14K | — | $0 |
| Jun 28, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 10K | $0.30 | $3K |
| Jun 28, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 8K | $0.29 | $2K |
| Jun 7, 2023 | Kaye David M | Secretary, Director | Option exercise(M) | 6K | — | $0 |
| Jun 7, 2023 | Kaye David M | Secretary, Director | Tax withholding(F) | 5K | $0.37 | $2K |
| Jun 7, 2023 | Kaye David M | Secretary, Director | Option exercise(M) | 6K | $0.29 | $2K |
| Jun 5, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 7K | $0.29 | $2K |
| Jun 5, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 5K | $0.38 | $2K |
| Jun 5, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 7K | — | $0 |
| Feb 20, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Tax withholding(F) | 32K | $0.42 | $13K |
| Feb 20, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 50K | $0.27 | $14K |
| Feb 20, 2023 | Pavlish John | Senior VP/Chief Tech Officer | Option exercise(M) | 50K | — | $0 |
| Feb 1, 2023 | Kaye David M | Secretary, Director | Option exercise(M) | 250K | — | $0 |
| Feb 1, 2023 | Kaye David M | Secretary, Director | Option exercise(M) | 250K | $0.19 | $48K |
| Feb 1, 2023 | Kaye David M | Secretary, Director | Tax withholding(F) | 95K | $0.50 | $48K |
| Feb 1, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 250K | — | $0 |
| Feb 1, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Tax withholding(F) | 140K | $0.50 | $70K |
| Feb 1, 2023 | MacPherson Richard | President and CEO, Director, 10% Owner | Option exercise(M) | 250K | $0.28 | $70K |
| Feb 1, 2023 | Greenberg Christopher | Chairman of the Board, Director | Option exercise(M) | 600K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Issuer: Birchtech Corp., SEC CIK 0000728385. The symbol on a Form 4 is typed by the filer, so this page follows the issuer with the newest filing under BCHT and shows every filing by that issuer (also filed as MEEC, CHYUD, CHYU, CHYU.OB, DGCO.OB, GCO.OB, DGCO).
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-12. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for BCHT