Figures computed from official regulatory filings — .
Ownershipinsiders 13.59% · institutions 24.38% · short 0.4% of float
In USD · as of Oct 5, 2026
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Birchtech Corp. provides specialty activated carbon technologies for air and water purification in the United States. The company provides mercury capture solutions. Its Sorbent Enhancement Additive (SEA) technology offers total mercury control with solutions based on a thorough scientific understanding of actual and probable interactions involved in mercury capture in coal-fired flue gas. In addition, the company develops water purification technologies on chemicals, such as PFAS and PFOS. The company was formerly known as Midwest Energy Emissions Corp. and changed its name to Birchtech Corp. in October 2024. The company is headquartered in Corsicana, Texas.
Market information source · Oct 5, 2026
Periods recorded in the consulted sources. These do not certify the legal dates of name changes.
SEC company identity · Oct 5, 2026
Open-market timeline · full history
99 buys63 sells— close pricebar = usd volume, √ scaleclick a period to filter the table
| Insider | Type | Value · USD | Signals | Details |
|---|---|---|---|---|
| MacPherson Richard | Buy | $750K | conv 67First in 12mo |
| SEC |
| MacPherson Richard | Other | $288.7K | SEC |
| Pavlish John | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Kaye David M | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Other | $173.4K | SEC |
| MacPherson Richard | Exercise | $290K | SEC |
| Pavlish John | Exercise | $174K | SEC |
| Kaye David M | Exercise | $145K | Unusual size | SEC |
| Kaye David M | Other | $144.3K | SEC |
| MacPherson Richard | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Exercise | $95K | SEC |
| MacPherson Richard | Exercise | $95K | SEC |
| MacPherson Richard | Other | $94.1K | SEC |
| Pavlish John | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| MacPherson Richard | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Other | $94.1K | SEC |
| Coogler Mitzi H | AwardD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Exercise | $162K | Unusual size | SEC |
| Pavlish John | Other | $449.9K | Unusual size | SEC |
| MacPherson Richard | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Exercise | $450K | Unusual size | SEC |
| Pavlish John | ExerciseD (derivative) | n/a (Non-cash transaction: the filing states a price of zero (award, gift, exercise)) | SEC |
| Pavlish John | Other | $162K | Unusual size | SEC |
| MacPherson Richard | Other | $404.9K | SEC |