Cytosorbents Corp (CTSO)

Latest Insider Confidence Score

2025Q4

50.0
Bullish

Company insider confidence (by quarter)

2004Q4 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Montiel Guillermina 4,993,984 Jul 21, 2006
Shipley Robert 2,972,819 Jan 23, 2015
Chan Phillip P. CEO 1,482,963 Nov 20, 2025
Bocchino Thomas 1,000,000 Dec 3, 2012
Chassman Margie 630,000 Nov 17, 2006

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Nov 18, 2025 Nov 20, 2025 Chan Phillip P. CEO Neutral 85.0 +100,000 7.23% -
Aug 8, 2025 Aug 8, 2025 Chan Phillip P. CEO Neutral 85.0 +105,600 8.27% -
Aug 8, 2025 Aug 8, 2025 Jones Edward Raymond Director Neutral 52.5 - 0.00% -
Aug 8, 2025 Aug 8, 2025 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Aug 8, 2025 Aug 8, 2025 MARIANI PETER J CFO Neutral 90.0 +71,500 15.32% -
Aug 8, 2025 Aug 8, 2025 Kim Jiny Director Neutral 52.5 - 0.00% -
Aug 8, 2025 Aug 8, 2025 Capponi Vincent COO Neutral 90.0 +89,100 13.16% -
Aug 8, 2025 Aug 8, 2025 Deliargyris Efthymios Chief Medical Officer Neutral 90.0 +70,000 17.37% -
Aug 8, 2025 Aug 8, 2025 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Feb 24, 2025 Mar 4, 2025 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Feb 24, 2025 Feb 26, 2025 Capponi Vincent COO Neutral 52.5 - 0.00% -
Feb 24, 2025 Feb 26, 2025 MARIANI PETER J CFO Neutral 52.5 - 0.00% -
Feb 24, 2025 Feb 26, 2025 Chan Phillip P. CEO Neutral 52.5 - 0.00% -
Feb 24, 2025 Feb 26, 2025 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 Capponi Vincent COO Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 Deliargyris Efthymios Chief Medical Officer Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 Chan Phillip P. CEO Neutral 52.5 - 0.00% -
Jan 17, 2025 Jan 22, 2025 MARIANI PETER J CFO Neutral 52.5 - 0.00% -
Dec 13, 2024 Dec 16, 2024 MARIANI PETER J CFO Buy 86.3 +20,000 5.24% $19.3K
Dec 11, 2024 Dec 13, 2024 MARIANI PETER J CFO Buy 86.3 +31,363 8.96% $28K
Oct 4, 2024 Oct 8, 2024 Deliargyris Efthymios Chief Medical Officer Neutral 52.5 - 0.00% -
Oct 4, 2024 Oct 8, 2024 Capponi Vincent COO Neutral 52.5 - 0.00% -
Aug 14, 2024 Aug 16, 2024 MARIANI PETER J CFO Neutral 90.0 +350,000 100.00% -
Aug 16, 2024 MARIANI PETER J CFO Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 4, 2024 Jones Edward Raymond Director Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 4, 2024 Deliargyris Efthymios Chief Medical Officer Neutral 90.0 +61,000 17.51% -
Apr 2, 2024 Apr 4, 2024 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 4, 2024 BLOCH KATHLEEN P. CFO Neutral 90.0 +65,000 13.89% -
Apr 2, 2024 Apr 4, 2024 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 4, 2024 Capponi Vincent COO Neutral 90.0 +81,000 13.87% -
Apr 2, 2024 Apr 4, 2024 Kim Jiny Director Neutral 52.5 - 0.00% -
Apr 2, 2024 Apr 4, 2024 Chan Phillip P. CEO Neutral 85.0 +96,000 8.98% -
Mar 29, 2024 Apr 2, 2024 Deliargyris Efthymios Chief Medical Officer Neutral 52.5 - 0.00% -
Mar 29, 2024 Apr 2, 2024 Capponi Vincent COO Neutral 52.5 - 0.00% -
Mar 29, 2024 Apr 2, 2024 BLOCH KATHLEEN P. CFO Neutral 52.5 - 0.00% -
Mar 29, 2024 Apr 2, 2024 Chan Phillip P. CEO Neutral 52.5 - 0.00% -
Dec 13, 2023 Dec 15, 2023 Sobel Alan D. Director Buy 91.3 +22,557 27.75% $30K
Dec 13, 2023 Dec 15, 2023 Deliargyris Efthymios Chief Medical Officer Buy 86.3 +22,557 6.92% $30K
Dec 13, 2023 Dec 15, 2023 Capponi Vincent COO Buy 83.8 +18,797 3.32% $25K
Dec 13, 2023 Dec 15, 2023 BATOR MICHAEL G. Director Buy 95.0 +37,594 42.82% $50K
Dec 13, 2023 Dec 15, 2023 Jones Edward Raymond Director Buy 86.3 +7,519 9.25% $10K
Dec 13, 2023 Dec 15, 2023 BLOCH KATHLEEN P. CFO Buy 90.0 +37,594 8.74% $50K
Dec 13, 2023 Dec 15, 2023 Kim Jiny Director Buy 91.3 +7,519 10.70% $10K
Dec 13, 2023 Dec 15, 2023 Chan Phillip P. CEO Buy 90.0 +75,188 7.57% $100K
Sep 18, 2023 Sep 20, 2023 BLOCH KATHLEEN P. CFO Neutral 90.0 +45,000 11.33% -
Aug 15, 2023 D'Amico Alex CFO Neutral 52.5 - 0.00% -
Aug 4, 2023 Aug 8, 2023 BATOR MICHAEL G. Director Buy 82.5 +3,000 3.54% $9.6K
Jul 7, 2023 Jul 11, 2023 BLOCH KATHLEEN P. CFO Neutral 52.5 - 0.00% -
Jul 7, 2023 Jul 11, 2023 Chan Phillip P. CEO Neutral 85.0 +87,000 9.46% -
Jul 7, 2023 Jul 11, 2023 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Jul 7, 2023 Jul 11, 2023 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Jul 7, 2023 Jul 11, 2023 Jones Edward Raymond Director Neutral 52.5 - 0.00% -
Jul 7, 2023 Jul 11, 2023 Kim Jiny Director Neutral 58.8 - 0.00% -
Jul 7, 2023 Jul 11, 2023 Capponi Vincent COO Neutral 90.0 +73,000 14.51% -
Jul 7, 2023 Jul 11, 2023 Deliargyris Efthymios Chief Medical Officer Neutral 90.0 +55,000 19.88% -
May 25, 2023 May 30, 2023 BLOCH KATHLEEN P. CFO Buy 67.5 +3,300 0.75% $9.4K
May 10, 2023 May 12, 2023 BLOCH KATHLEEN P. CFO Buy 78.8 +10,000 2.32% $31.1K
Apr 4, 2023 Apr 5, 2023 Capponi Vincent Officer Neutral 52.5 - 0.00% -
Apr 3, 2023 Apr 5, 2023 Chan Phillip P. CEO Neutral 52.5 - 0.00% -
Feb 27, 2023 Mar 1, 2023 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Feb 6, 2023 Feb 8, 2023 Kraus Al Director Neutral 52.5 - 0.00% -
Dec 8, 2022 Dec 9, 2022 Chan Phillip P. CEO Buy 67.5 +5,859 0.66% $7.4K
Dec 6, 2022 Dec 8, 2022 Chan Phillip P. CEO Buy 83.8 +24,141 2.78% $30.5K
Sep 8, 2022 Sep 12, 2022 Chan Phillip P. CEO Buy 87.5 +35,000 4.21% $59.5K
Aug 25, 2022 Aug 26, 2022 Kim Jiny Director Buy 77.5 +1,000 1.44% $1.9K
Aug 10, 2022 Aug 12, 2022 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Aug 10, 2022 Aug 12, 2022 Kim Jiny Director Neutral 52.5 - 0.00% -
Aug 10, 2022 Aug 12, 2022 Jones Edward Raymond Director Neutral 52.5 - 0.00% -
Aug 10, 2022 Aug 12, 2022 BATOR MICHAEL G. Director Neutral 52.5 - 0.00% -
Aug 10, 2022 Aug 12, 2022 Kraus Al Director Neutral 52.5 - 0.00% -
Aug 10, 2022 Aug 12, 2022 Deliargyris Efthymios Chief Medical Officer Neutral 90.0 +107,000 26.43% -
Aug 10, 2022 Aug 12, 2022 Capponi Vincent COO Neutral 90.0 +69,000 15.56% -
Aug 10, 2022 Aug 12, 2022 BLOCH KATHLEEN P. CFO Neutral 90.0 +55,500 14.48% -
Aug 10, 2022 Aug 12, 2022 Chan Phillip P. CEO Neutral 90.0 +79,000 10.31% -
Jun 21, 2022 Jun 22, 2022 Capponi Vincent COO Buy 60.0 +2,000 0.45% $3.6K
Jun 16, 2022 Jun 21, 2022 Capponi Vincent Officer Buy 67.5 +3,000 0.68% $6K
Jun 16, 2022 Jun 21, 2022 Chan Phillip P. CEO Buy 60.0 +2,221 0.29% $4.1K
Jun 9, 2022 Jun 10, 2022 Chan Phillip P. CEO Buy 78.8 +16,000 2.13% $34.8K
Jun 6, 2022 Jun 6, 2022 BLOCH KATHLEEN P. CFO Buy 78.8 +8,700 2.32% $16.5K
May 23, 2022 May 25, 2022 Capponi Vincent COO Buy 78.8 +5,000 1.15% $10.2K
May 18, 2022 May 19, 2022 BATOR MICHAEL G. Director Buy 91.3 +11,000 14.91% $24.1K
May 16, 2022 May 17, 2022 Jones Edward Raymond Director Buy 77.5 +1,676 2.10% $3.7K
May 11, 2022 May 12, 2022 Sobel Alan D. Director Buy 91.3 +10,000 14.03% $20.2K
May 6, 2022 May 9, 2022 Kraus Al Director Buy 82.5 +5,000 4.00% $9.8K
Apr 5, 2022 Apr 5, 2022 Kim Jiny Director Neutral 90.0 +69,300 100.00% -
Apr 5, 2022 Kim Jiny Director Neutral 52.5 - 0.00% -
Feb 14, 2022 Feb 15, 2022 Sobel Alan D. Director Neutral 82.5 +2,000 2.89% -
Dec 29, 2021 Jan 3, 2022 Chan Phillip P. CEO Buy 82.5 +15,000 1.99% $60.7K
Dec 9, 2021 Dec 13, 2021 Jones Edward Raymond Director Sell 26.3 -3,161 -3.82% $16.5K
Dec 10, 2021 Dec 13, 2021 Chan Phillip P. CEO Buy 68.8 +5,000 0.67% $26.3K
Nov 23, 2021 Nov 26, 2021 BLOCH KATHLEEN P. CFO Buy 78.8 +4,000 1.05% $19.9K
Aug 31, 2021 Sep 2, 2021 Kraus Al Director Sell 26.3 -4,000 -3.10% $37.6K
Apr 12, 2021 Apr 14, 2021 Sobel Alan D. Director Neutral 52.5 - 0.00% -
Apr 12, 2021 Apr 14, 2021 Kraus Al Director Neutral 52.5 - 0.00% -
Apr 12, 2021 Apr 14, 2021 Jones Edward Raymond Director Neutral 52.5 - 0.00% -
Apr 12, 2021 Apr 14, 2021 Deliargyris Efthymios Chief Medical Officer Neutral 90.0 +40,000 27.97% -
Apr 12, 2021 Apr 14, 2021 Chan Phillip P. CEO Neutral 90.0 +72,000 10.32% -
Apr 12, 2021 Apr 14, 2021 Capponi Vincent President Neutral 90.0 +62,215 15.34% -