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Are CytoSorbents Insiders Buying or Selling?
CytoSorbents (CTSO) has had 7 insider transactions in the past 90 days, all buys — insider buying is generally read as a bullish signal. The most recent was Phillip Chan, who bought 3,774 shares at $6.00 on September 15, 2026.
Insider trading patterns can signal confidence or concern from the people who know the company best. AltIndex tracks insider transactions as one of 25+ alternative data signals in the CTSO AI Score. For government officials trading this stock, see CTSO congressional trading.
Who’s Trading CytoSorbents Stock?
| Insider | Activity | Trades | Last Trade |
|---|---|---|---|
| Phillip Chan | Bought $200,000 | 4 | Sep 15, 2026 |
| PETER MARIANI | Bought $91,000 | 4 | Jun 15, 2026 |
| Alan Sobel | Bought $15,000 | 3 | Sep 15, 2026 |
| Vincent Capponi | Bought $13,000 | 2 | Sep 14, 2026 |
Recent CytoSorbents Insider Transactions
| Insider | Transaction Date | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Phillip Chan | Sep 15, 2026 | Buy | 3,774 | $6 | $23,000 |
| Alan Sobel | Sep 15, 2026 | Buy | 1,900 | $6.12 | $12,000 |
| Alan Sobel | Sep 15, 2026 | Buy | 500 | $6.05 | $3,000 |
| Alan Sobel | Sep 15, 2026 | Buy | 100 | $6.01 | $600 |
| Vincent Capponi | Sep 14, 2026 | Buy | 1,800 | $6.07 | $11,000 |
| Vincent Capponi | Sep 14, 2026 | Buy | 273 | $5.9 | $1,600 |
| Phillip Chan | Sep 4, 2026 | Buy | 200,000 | $0.35 | $70,000 |
| PETER MARIANI | Jun 15, 2026 | Buy | 100,000 | $0.44 | $44,000 |
| Phillip Chan | Jun 15, 2026 | Buy | 10,333 | $0.43 | $4,400 |
| Phillip Chan | Jun 12, 2026 | Buy | 251,136 | $0.4 | $100,000 |
| PETER MARIANI | Dec 13, 2024 | Buy | 20,000 | $0.96 | $19,000 |
| PETER MARIANI | Dec 12, 2024 | Buy | 20,000 | $0.89 | $18,000 |
| PETER MARIANI | Dec 11, 2024 | Buy | 11,363 | $0.89 | $10,000 |
Frequently Asked Questions: CytoSorbents Insider Trading
In the past 90 days, CytoSorbents insiders have made 7 buys and 0 sells. The net buying may indicate insider confidence in the company’s outlook.
Insider buying is generally a stronger signal than insider selling, since insiders may sell for personal reasons (diversification, taxes) but typically buy only when they believe the stock is undervalued. AltIndex uses insider transaction patterns alongside 25+ other signals in the AI Score.
Chan Phillip P. has bought the most CTSO stock in the last 2 years, with a total value of $200,000.
According to our estimates, the total value of insider transactions for CytoSorbents in the last 2 years is positive, amounting to $320,000. This indicates that insiders have predominantly bought shares, showcasing their confidence in the company's future prospects.
