CTSO
Cytosorbents Corp
Stock Price & Insider Activity
Historical close with open-market insider transaction markers
Insider activity
Sign in to download CSVBought$1.2M56 buy days
Sold$3.3M30 sell days
Net insider flow$-2.0Mnet selling · 10 years
Latest trade2026-09-15Chan Phillip P.
| Date | Side | Insider | Role | Shares | Avg price | Value | Trades |
|---|---|---|---|---|---|---|---|
| 2026-09-15 | Buy | Chan Phillip P. | CEO | 3,774 | $6.00 | $22.6K | 1 |
| 2026-09-15 | Buy | Sobel Alan D. | Director | 2,500 | $6.10 | $15.3K | 3 |
| 2026-09-14 | Buy | Capponi Vincent | President | 2,073 | $6.05 | $12.5K | 2 |
| 2026-09-04 | Buy | Chan Phillip P. | CEO | 200,000 | $0.35 | $70.0K | 1 |
| 2026-06-15 | Buy | MARIANI PETER J | CFO | 100,000 | $0.44 | $44.0K | 1 |
| 2026-06-15 | Buy | Chan Phillip P. | CEO | 10,333 | $0.43 | $4.4K | 1 |
| 2026-06-12 | Buy | Chan Phillip P. | CEO | 251,136 | $0.40 | $100.5K | 1 |
| 2024-12-13 | Buy | MARIANI PETER J | CFO | 20,000 | $0.96 | $19.2K | 1 |
| 2024-12-12 | Buy | MARIANI PETER J | CFO | 20,000 | $0.89 | $17.8K | 1 |
| 2024-12-11 | Buy | MARIANI PETER J | CFO | 11,363 | $0.89 | $10.1K | 1 |
| 2023-12-13 | Buy | Chan Phillip P. | CEO | 75,188 | $1.33 | $100.0K | 1 |
| 2023-12-13 | Buy | BATOR MICHAEL G. | Director | 37,594 | $1.33 | $50.0K | 1 |
| 2023-12-13 | Buy | BLOCH KATHLEEN P. | CFO | 37,594 | $1.33 | $50.0K | 1 |
| 2023-12-13 | Buy | Deliargyris Efthymios | Other C-suite | 22,557 | $1.33 | $30.0K | 1 |
| 2023-12-13 | Buy | Sobel Alan D. | Director | 22,557 | $1.33 | $30.0K | 1 |
| 2023-12-13 | Buy | Capponi Vincent | President | 18,797 | $1.33 | $25.0K | 1 |
| 2023-12-13 | Buy | Jones Edward Raymond | Director | 7,519 | $1.33 | $10.0K | 1 |
| 2023-12-13 | Buy | Kim Jiny | Director | 7,519 | $1.33 | $10.0K | 1 |
| 2023-08-07 | Buy | BATOR MICHAEL G. | Director | 2,000 | $3.17 | $6.3K | 2 |
| 2023-08-04 | Buy | BATOR MICHAEL G. | Director | 1,000 | $3.23 | $3.2K | 1 |
| 2023-05-25 | Buy | BLOCH KATHLEEN P. | CFO | 2,200 | $2.85 | $6.3K | 2 |
| 2023-05-10 | Buy | BLOCH KATHLEEN P. | CFO | 10,000 | $3.11 | $31.1K | 3 |
| 2022-12-08 | Buy | Chan Phillip P. | CEO | 5,859 | $1.26 | $7.4K | 1 |
| 2022-12-07 | Buy | Chan Phillip P. | CEO | 9,850 | $1.26 | $12.4K | 1 |
| 2022-12-06 | Buy | Chan Phillip P. | CEO | 14,291 | $1.26 | $18.0K | 1 |
| 2022-09-08 | Buy | Chan Phillip P. | CEO | 35,000 | $1.70 | $59.5K | 1 |
| 2022-08-25 | Buy | Director | 1,000 | $1.91 | $1.9K | 1 | |
| 2022-06-21 | Buy | Capponi Vincent | President | 2,000 | $1.80 | $3.6K | 1 |
| 2022-06-16 | Buy | Capponi Vincent | Other officer | 3,000 | $2.00 | $6.0K | 1 |
| 2022-06-16 | Buy | Chan Phillip P. | CEO | 2,221 | $1.85 | $4.1K | 1 |
| 2022-06-09 | Buy | Chan Phillip P. | CEO | 16,000 | $2.17 | $34.7K | 1 |
| 2022-06-06 | Buy | BLOCH KATHLEEN P. | CFO | 8,700 | $1.90 | $16.5K | 1 |
| 2022-05-23 | Buy | Capponi Vincent | President | 5,000 | $2.03 | $10.2K | 3 |
| 2022-05-18 | Buy | BATOR MICHAEL G. | Director | 5,000 | $2.19 | $11.0K | 3 |
| 2022-05-16 | Buy | Jones Edward Raymond | Director | 1,676 | $2.24 | $3.8K | 1 |
| 2022-05-11 | Buy | Sobel Alan D. | Director | 10,000 | $2.02 | $20.2K | 2 |
| 2022-05-06 | Buy | Kraus Al | Director | 5,000 | $1.96 | $9.8K | 1 |
| 2021-12-30 | Buy | Chan Phillip P. | CEO | 5,462 | $4.05 | $22.1K | 1 |
| 2021-12-29 | Buy | Chan Phillip P. | CEO | 9,538 | $4.05 | $38.6K | 2 |
| 2021-12-10 | Buy | Chan Phillip P. | CEO | 5,000 | $5.25 | $26.2K | 1 |
| 2021-11-23 | Buy | BLOCH KATHLEEN P. | CFO | 4,000 | $4.98 | $19.9K | 1 |
| 2021-08-31 | Sell | Kraus Al | Director | 4,000 | $9.40 | $37.6K | 1 |
| 2020-11-10 | Sell | Kraus Al | Director | 8,000 | $8.00 | $64.0K | 1 |
| 2020-04-27 | Sell | Capponi Vincent | COO | 10,000 | $10.00 | $100.0K | 1 |
| 2020-03-10 | Sell | Capponi Vincent | COO | 4,677 | $6.00 | $28.1K | 1 |
| 2019-12-10 | Buy | BLOCH KATHLEEN P. | CFO | 3,000 | $3.68 | $11.0K | 1 |
| 2019-12-06 | Buy | Chan Phillip P. | CEO | 16,500 | $3.60 | $59.4K | 1 |
| 2019-11-26 | Buy | BLOCH KATHLEEN P. | CFO | 1,000 | $4.27 | $4.3K | 1 |
| 2019-08-16 | Buy | BLOCH KATHLEEN P. | CFO | 6,500 | $4.83 | $31.4K | 1 |
| 2019-08-09 | Buy | BLOCH KATHLEEN P. | CFO | 1,500 | $5.52 | $8.3K | 1 |
| 2019-05-10 | Buy | BLOCH KATHLEEN P. | CFO | 3,000 | $6.49 | $19.5K | 1 |
| 2018-12-07 | Sell | Chan Phillip P. | CEO | 24,337 | $9.37 | $228.0K | 1 |
| 2018-09-07 | Sell | Chan Phillip P. | CEO | 2,731 | $14.11 | $38.5K | 1 |
| 2018-09-06 | Sell | Chan Phillip P. | CEO | 2,900 | $14.75 | $42.8K | 1 |
| 2018-09-05 | Sell | Chan Phillip P. | CEO | 5,787 | $14.85 | $85.9K | 2 |
| 2018-08-30 | Sell | Kraus Al | Director | 26,000 | $14.47 | $376.2K | 1 |
| 2018-08-29 | Sell | Capponi Vincent | COO | 20,000 | $14.00 | $280.0K | 1 |
| 2018-08-28 | Sell | BLOCH KATHLEEN P. | CFO | 10,000 | $13.50 | $135.0K | 1 |
| 2018-08-28 | Sell | Capponi Vincent | COO | 9,565 | $13.00 | $124.3K | 1 |
| 2018-08-03 | Sell | BLOCH KATHLEEN P. | CFO | 10,000 | $12.54 | $125.4K | 3 |
| 2018-08-03 | Sell | Capponi Vincent | COO | 7,600 | $13.08 | $99.4K | 1 |
| 2018-08-02 | Sell | Capponi Vincent | COO | 2,835 | $13.00 | $36.9K | 1 |
| 2018-06-15 | Sell | Capponi Vincent | COO | 8,633 | $12.00 | $103.6K | 1 |
| 2018-06-14 | Sell | Capponi Vincent | COO | 11,367 | $12.00 | $136.4K | 1 |
| 2018-05-17 | Sell | Capponi Vincent | COO | 28,000 | $10.00 | $280.0K | 2 |
| 2018-05-16 | Sell | BLOCH KATHLEEN P. | CFO | 12,400 | $9.00 | $111.6K | 1 |
| 2018-05-16 | Sell | Capponi Vincent | COO | 4,846 | $9.00 | $43.6K | 1 |
| 2018-05-15 | Sell | BLOCH KATHLEEN P. | CFO | 12,400 | $8.75 | $108.5K | 1 |
| 2018-05-15 | Sell | Capponi Vincent | COO | 7,154 | $9.00 | $64.4K | 2 |
| 2018-05-14 | Sell | BLOCH KATHLEEN P. | CFO | 10,000 | $8.50 | $85.0K | 1 |
| 2018-04-17 | Sell | BLOCH KATHLEEN P. | CFO | 120 | $8.25 | $990 | 1 |
| 2018-03-15 | Sell | BLOCH KATHLEEN P. | CFO | 11,176 | $8.25 | $92.2K | 1 |
| 2018-03-13 | Sell | BLOCH KATHLEEN P. | CFO | 1,104 | $8.25 | $9.1K | 1 |
| 2018-02-21 | Sell | BLOCH KATHLEEN P. | CFO | 10,000 | $8.00 | $80.0K | 1 |
| 2018-01-12 | Sell | BLOCH KATHLEEN P. | CFO | 12,400 | $7.75 | $96.1K | 1 |
| 2018-01-08 | Sell | BLOCH KATHLEEN P. | CFO | 32,400 | $7.30 | $236.4K | 3 |
| 2017-11-27 | Sell | Capponi Vincent | COO | 4,000 | $7.00 | $28.0K | 1 |
| 2017-06-09 | Buy | Mortensen Eric R. | Other C-suite | 2,500 | $4.04 | $10.1K | 1 |
| 2017-06-09 | Buy | BATOR MICHAEL G. | Director | 1,500 | $4.12 | $6.2K | 1 |
| 2017-06-08 | Buy | Chan Phillip P. | CEO | 3,700 | $4.00 | $14.8K | 1 |
| 2017-06-08 | Buy | Capponi Vincent | COO | 2,500 | $4.00 | $10.0K | 1 |
| 2017-06-08 | Buy | Jones Edward Raymond | Director | 2,500 | $4.00 | $10.0K | 2 |
| 2017-06-05 | Buy | Chan Phillip P. | CEO | 6,300 | $4.00 | $25.2K | 1 |
| 2017-05-15 | Buy | BLOCH KATHLEEN P. | CFO | 1,000 | $4.34 | $4.3K | 1 |
| 2016-12-09 | Buy | Chan Phillip P. | CEO | 4,600 | $5.40 | $24.8K | 1 |
| 2016-12-06 | Buy | BLOCH KATHLEEN P. | CFO | 1,000 | $4.83 | $4.8K | 1 |