Kaye David M has filed 28 insider transactions across 1 company since February 2023.
Most recent transaction: a option exercise of 250000 shares of Birchtech Corp. ($BCHT) on December 12, 2025.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 12, 2025 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 250000 | $0.58 | 525,356.0000 | 98,000,381 | 90.79% | 0.26% |
| Dec. 12, 2025 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 250000 | $0.00 | 0.0000 | 98,000,381 | 100.00% | 0.26% |
| Dec. 12, 2025 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 155214 | $0.93 | 370,142.0000 | 98,000,381 | 29.54% | 0.16% |
| Jan. 15, 2024 | Birchtech Corp. | $BCHT | Kaye David M | Director | A | Stock Option (Right to Buy) | 100000 | $0.00 | 100,000.0000 | 97,452,397 | 9999.99% | 0.10% |
| Dec. 11, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.25 | 276,934.0000 | 0 | 2.31% | 0.00% |
| Dec. 11, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 1578 | $0.99 | 275,356.0000 | 0 | 0.57% | 0.00% |
| Dec. 11, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Nov. 30, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.33 | 272,796.0000 | 0 | 2.34% | 0.00% |
| Nov. 30, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 2112 | $0.98 | 270,684.0000 | 0 | 0.77% | 0.00% |
| Nov. 30, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Oct. 31, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.20 | 269,627.0000 | 0 | 2.37% | 0.00% |
| Oct. 31, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 3081 | $0.41 | 266,546.0000 | 0 | 1.14% | 0.00% |
| Oct. 31, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Sept. 29, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.26 | 267,518.0000 | 0 | 2.39% | 0.00% |
| Sept. 29, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 4141 | $0.39 | 263,377.0000 | 0 | 1.55% | 0.00% |
| Sept. 29, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| July 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.17 | 264,477.0000 | 0 | 2.42% | 0.00% |
| July 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 3209 | $0.33 | 261,268.0000 | 0 | 1.21% | 0.00% |
| July 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Common Stock | 6250 | $0.21 | 262,602.0000 | 0 | 2.44% | 0.00% |
| June 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | F | Common Stock | 4375 | $0.30 | 258,227.0000 | 0 | 1.67% | 0.00% |
| June 28, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Director | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 7, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | M | Stock Option (Right to Buy) | 6250 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| June 7, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | F | Common Stock | 4898 | $0.37 | 256,352.0000 | 0 | 1.87% | 0.00% |
| June 7, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | M | Common Stock | 6250 | $0.29 | 261,250.0000 | 0 | 2.45% | 0.00% |
| Feb. 1, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | M | Common Stock | 250000 | $0.19 | 350,000.0000 | 0 | 250.00% | 0.00% |
| Feb. 1, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | F | Common Stock | 95000 | $0.50 | 255,000.0000 | 0 | 27.14% | 0.00% |
| Feb. 1, 2023 | Birchtech Corp. | $BCHT | Kaye David M | Secretary | M | Stock Option (Right to Buy) | 250000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |