There have been 50 recent insider transactions recorded for Cytosorbents Corporation (CTSO), including 37 buys and 12 sells. Total insider buying was valued at $1.81M and total insider selling at $1.09M.
Notable insiders with recent activity include Chan Phillip P., Mariani Peter J, Capponi Vincent. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — CTSO
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2025-11-18 |
Chan Phillip P. |
Chief Executive Officer |
RSU Award |
100,000 |
$0.64 |
$64K |
1,482,963 |
| 2025-08-08 |
Mariani Peter J |
Chief Financial Officer |
RSU Award |
90,000 |
$1.00 |
$90K |
90,000 |
| 2025-08-08 |
Capponi Vincent |
President and COO |
RSU Award |
111,100 |
$1.00 |
$111.1K |
111,100 |
| 2025-08-08 |
Jones Edward Raymond |
Director |
RSU Award |
22,000 |
$1.00 |
$22K |
22,000 |
| 2025-08-08 |
Chan Phillip P. |
Chief Executive Officer |
RSU Award |
136,400 |
$1.00 |
$136.4K |
136,400 |
| 2025-08-08 |
Sobel Alan D. |
Director |
RSU Award |
22,000 |
$1.00 |
$22K |
22,000 |
| 2025-08-08 |
Bator Michael G. |
Director |
RSU Award |
44,000 |
$1.00 |
$44K |
44,000 |
| 2025-08-08 |
Deliargyris Efthymios |
Chief Medical Officer |
RSU Award |
95,000 |
$1.00 |
$95K |
95,000 |
| 2025-08-08 |
Kim Jiny |
Director |
RSU Award |
22,000 |
$1.00 |
$22K |
22,000 |
| 2025-02-24 |
Mariani Peter J |
Chief Financial Officer |
Option Exercise (OTM) |
32,625 |
$1.13 |
$36.87K |
- |
| 2025-02-24 |
Capponi Vincent |
President and COO |
Option Exercise (OTM) |
12,000 |
$1.13 |
$13.56K |
- |
| 2025-02-24 |
Chan Phillip P. |
Chief Executive Officer |
Option Exercise (OTM) |
34,168 |
$1.13 |
$38.61K |
- |
| 2025-02-24 |
Sobel Alan D. |
Director |
Option Exercise (OTM) |
21,950 |
$1.13 |
$24.8K |
- |
| 2025-02-24 |
Bator Michael G. |
Director |
Option Exercise (OTM) |
15,879 |
$1.13 |
$17.94K |
- |
| 2025-01-17 |
Mariani Peter J |
Chief Financial Officer |
Option Exercise (ITM) |
32,625 |
$1.00 |
$32.63K |
- |
| 2025-01-17 |
Capponi Vincent |
President and COO |
Option Exercise (ITM) |
31,760 |
$1.00 |
$31.76K |
- |
| 2025-01-17 |
Chan Phillip P. |
Chief Executive Officer |
Option Exercise (ITM) |
90,832 |
$1.00 |
$90.83K |
- |
| 2025-01-17 |
Sobel Alan D. |
Director |
Option Exercise (ITM) |
21,950 |
$1.00 |
$21.95K |
- |
| 2025-01-17 |
Bator Michael G. |
Director |
Option Exercise (ITM) |
15,879 |
$1.00 |
$15.88K |
- |
| 2025-01-17 |
Deliargyris Efthymios |
Chief Medical Officer |
Option Exercise (ITM) |
16,233 |
$1.00 |
$16.23K |
- |
| 2024-12-13 |
Mariani Peter J |
Chief Financial Officer |
Informative Buy |
20,000 |
$0.96 |
$19.29K |
401,363 |
| 2024-12-12 |
Mariani Peter J |
Chief Financial Officer |
Informative Buy |
20,000 |
$0.89 |
$17.87K |
381,363 |
| 2024-12-11 |
Mariani Peter J |
Chief Financial Officer |
Informative Buy |
11,363 |
$0.89 |
$10.1K |
361,363 |
| 2024-10-04 |
Capponi Vincent |
President and COO |
RSU Award |
50,000 |
$1.19 |
$59.5K |
50,000 |
| 2024-10-04 |
Deliargyris Efthymios |
Chief Medical Officer |
RSU Award |
50,000 |
$1.19 |
$59.5K |
50,000 |
| 2024-08-14 |
Mariani Peter J |
Officer |
Unknown |
- |
- |
- |
- |
| 2024-08-14 |
Mariani Peter J |
Chief Financial Officer |
RSU Award |
80,000 |
$0.90 |
$72K |
80,000 |
| 2024-04-02 |
Capponi Vincent |
President and COO |
RSU Award |
101,000 |
$0.96 |
$96.46K |
101,000 |
| 2024-04-02 |
Jones Edward Raymond |
Director |
RSU Award |
22,000 |
$0.96 |
$21.01K |
22,000 |
| 2024-04-02 |
Bloch Kathleen P. |
Chief Financial Officer |
RSU Award |
87,000 |
$0.96 |
$83.09K |
87,000 |
| 2024-04-02 |
Chan Phillip P. |
Chief Executive Officer |
RSU Award |
124,000 |
$0.96 |
$118.42K |
124,000 |
| 2024-04-02 |
Sobel Alan D. |
Director |
RSU Award |
22,000 |
$0.96 |
$21.01K |
22,000 |
| 2024-04-02 |
Bator Michael G. |
Director |
RSU Award |
44,000 |
$0.96 |
$42.02K |
44,000 |
| 2024-04-02 |
Deliargyris Efthymios |
Chief Medical Officer |
RSU Award |
86,000 |
$0.96 |
$82.13K |
86,000 |
| 2024-04-02 |
Kim Jiny |
Director |
RSU Award |
22,000 |
$0.96 |
$21.01K |
22,000 |
| 2024-03-29 |
Capponi Vincent |
President and COO |
RSU Award |
48,923 |
$0.95 |
$46.48K |
48,923 |
| 2024-03-29 |
Bloch Kathleen P. |
Chief Financial Officer |
RSU Award |
49,038 |
$0.95 |
$46.59K |
49,038 |
| 2024-03-29 |
Chan Phillip P. |
Chief Executive Officer |
RSU Award |
129,998 |
$0.95 |
$123.5K |
129,998 |
| 2024-03-29 |
Deliargyris Efthymios |
Chief Medical Officer |
RSU Award |
47,088 |
$0.95 |
$44.73K |
47,088 |
| 2023-12-13 |
Capponi Vincent |
President & COO |
Informative Buy |
6,578 |
$2.00 |
$13.16K |
6,578 |
| 2023-12-13 |
Jones Edward Raymond |
Director |
Informative Buy |
2,631 |
$2.00 |
$5.26K |
2,631 |
| 2023-12-13 |
Bloch Kathleen P. |
Chief Financial Officer |
Informative Buy |
13,157 |
$2.00 |
$26.31K |
13,157 |
| 2023-12-13 |
Chan Phillip P. |
Chief Executive Officer |
Informative Buy |
26,315 |
$2.00 |
$52.63K |
26,315 |
| 2023-12-13 |
Sobel Alan D. |
Director |
Informative Buy |
7,894 |
$2.00 |
$15.79K |
7,894 |
| 2023-12-13 |
Bator Michael G. |
Director |
Informative Buy |
13,157 |
$2.00 |
$26.31K |
13,157 |
| 2023-12-13 |
Deliargyris Efthymios |
Chief Medical Officer |
Informative Buy |
7,894 |
$2.00 |
$15.79K |
7,894 |
| 2023-12-13 |
Kim Jiny |
Director |
Informative Buy |
2,631 |
$2.00 |
$5.26K |
2,631 |
| 2023-09-18 |
Bloch Kathleen P. |
Chief Financial Officer |
RSU Award |
30,000 |
$1.98 |
$59.4K |
30,000 |
| 2023-08-07 |
Bator Michael G. |
Director |
Informative Buy |
1,000 |
$3.20 |
$3.2K |
86,800 |
| 2023-08-07 |
D'amico Alex |
Chief Financial Officer |
Disposition |
215,000 |
$3.48 |
$748.2K |
- |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
