Koscinski Joseph S. has filed 10 insider transactions across 1 company since January 2023.
Most recent transaction: a grant/award of 11052 shares of Ecovyst Inc. ($ECVT) on March 04, 2026.
Activity breakdown: 1 open-market purchase and 0 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 4, 2026 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 11052 | $11.31 | 595,784.0000 | 114,019,414 | 1.89% | 0.01% |
| Feb. 3, 2026 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 27158 | $0.00 | 584,732.0000 | 114,019,414 | 4.87% | 0.02% |
| Feb. 3, 2025 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 35944 | $0.00 | 557,574.0000 | 140,872,846 | 6.89% | 0.03% |
| Jan. 22, 2025 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | F | Common Stock | 5522 | $7.96 | 521,630.0000 | 140,872,846 | 1.05% | 0.00% |
| Jan. 5, 2025 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | F | Common Stock | 17457 | $7.76 | 527,152.0000 | 140,872,846 | 3.21% | 0.01% |
| Aug. 5, 2024 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | P | Common Stock | 4807 | $6.26 | 544,609.0000 | 140,744,045 | 0.89% | 0.00% |
| Jan. 22, 2024 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 45403 | $0.00 | 539,802.0000 | 140,744,045 | 9.18% | 0.03% |
| July 1, 2023 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | F | Common Stock | 52830 | $11.37 | 494,399.0000 | 139,571,272 | 9.65% | 0.04% |
| March 8, 2023 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 12306 | $0.00 | 547,229.0000 | 139,571,272 | 2.30% | 0.01% |
| Jan. 16, 2023 | Ecovyst Inc. | $ECVT | Koscinski Joseph S. | See Remarks | A | Common Stock | 60976 | $0.00 | 534,923.0000 | 139,571,272 | 12.87% | 0.04% |