CTSO Insider Trading Activity and SEC Form 4 Filings
CTSO insider trading summary
Over the past 12 months, insiders at Cytosorbents Corp (CTSO) reported 9 open-market purchases worth $199K by 4 insiders and no sales on SEC Form 4. Net insider buying was $199K.
Latest CTSO insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Sep 15, 2026 | Alan D. Sobel | Director | Buy | $601 (100 @ $6.01) |
| Sep 15, 2026 | Alan D. Sobel | Director | Buy | $12K (1,900 @ $6.12) |
| Sep 15, 2026 | Alan D. Sobel | Director | Buy | $3K (500 @ $6.05) |
| Sep 15, 2026 | Phillip P. Chan | Chief Executive Officer | Buy | $23K (3,774 @ $6.00) |
| Sep 14, 2026 | Vincent Capponi | President and COO | Buy | $2K (273 @ $5.90) |
| Sep 14, 2026 | Vincent Capponi | President and COO | Buy | $11K (1,800 @ $6.07) |
| Jun 15, 2026 | Phillip P. Chan | Chief Executive Officer | Buy | $4K (10,333 @ $0.43) |
| Jun 15, 2026 | Peter J Mariani | Chief Financial Officer | Buy | $44K (100,000 @ $0.44) |
| Jun 12, 2026 | Phillip P. Chan | Chief Executive Officer | Buy | $100K (251,136 @ $0.40) |
| Dec 13, 2024 | Peter J Mariani | Chief Financial Officer | Buy | $19K (20,000 @ $0.96) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.