Cytosorbents Corp ($CTSO) Insider Transactions

Last updated: 2026-03-14 11:36 UTC | Total transactions: 124

In the last 12 months, insiders at Cytosorbents Corp ($CTSO) filed 124 transactions with the SEC: 28 open-market purchases totaling $402,298 and 0 sales totaling $0. Net insider sentiment: net buying.

Cytosorbents Corp operates in the Surgical & medical instruments & apparatus industry (Industrial Applications and Services sector).

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Recent Insider Transactions

Transaction Date Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Nov. 18, 2025 Chan Phillip P. Chief Executive Officer A Common Stock 100000 $0.64 1,482,963.0000 62,753,959 7.23% 0.16%
Aug. 8, 2025 MARIANI PETER J Chief Financial Officer A Stock Option (Right to Buy) 90000 $0.00 90,000.0000 67,166,377 9999.99% 0.13%
Aug. 8, 2025 Kim Jiny Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 67,166,377 9999.99% 0.03%
Aug. 8, 2025 Capponi Vincent President and COO A Common Stock 89100 $0.00 766,268.0000 67,166,377 13.16% 0.13%
Aug. 8, 2025 Capponi Vincent President and COO A Stock Option (Right to Buy) 111100 $0.00 111,100.0000 67,166,377 9999.99% 0.17%
Aug. 8, 2025 Deliargyris Efthymios Chief Medical Officer A Common Stock 70000 $0.00 473,025.0000 67,166,377 17.37% 0.10%
Aug. 8, 2025 Deliargyris Efthymios Chief Medical Officer A Stock Option (Right to Buy) 95000 $0.00 95,000.0000 67,166,377 9999.99% 0.14%
Aug. 8, 2025 Sobel Alan D. Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 67,166,377 9999.99% 0.03%
Aug. 8, 2025 Chan Phillip P. Chief Executive Officer A Common Stock 105600 $0.00 1,382,963.0000 67,166,377 8.27% 0.16%
Aug. 8, 2025 BATOR MICHAEL G. Director A Stock Option (Right to Buy) 44000 $0.00 44,000.0000 67,166,377 9999.99% 0.07%
Aug. 8, 2025 Jones Edward Raymond Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 67,166,377 9999.99% 0.03%
Aug. 8, 2025 MARIANI PETER J Chief Financial Officer A Common Stock 71500 $0.00 538,113.0000 67,166,377 15.32% 0.11%
Aug. 8, 2025 Chan Phillip P. Chief Executive Officer A Stock Option (Right to Buy) 136400 $0.00 136,400.0000 67,166,377 9999.99% 0.20%
Feb. 24, 2025 BATOR MICHAEL G. Director O Common Stock 10000 $1.13 151,273.0000 54,434,609 7.08% 0.02%
Feb. 24, 2025 BATOR MICHAEL G. Director O Series A Right Warrants (right to buy) 15879 $1.13 0.0000 54,434,609 100.00% 0.03%
Feb. 24, 2025 Chan Phillip P. Chief Executive Officer O Common Stock 34168 $1.13 1,277,363.0000 54,434,609 2.75% 0.06%
Feb. 24, 2025 Chan Phillip P. Chief Executive Officer O Series A Right Warrants (right to buy) 34168 $1.13 0.0000 54,434,609 100.00% 0.06%
Feb. 24, 2025 Sobel Alan D. Director O Common Stock 21950 $1.13 147,757.0000 54,434,609 17.45% 0.04%
Feb. 24, 2025 Sobel Alan D. Director O Series A Right Warrants (right to buy) 21950 $1.13 0.0000 54,434,609 100.00% 0.04%
Feb. 24, 2025 Capponi Vincent President and COO O Common Stock 12000 $1.13 677,168.0000 54,434,609 1.80% 0.02%
Feb. 24, 2025 MARIANI PETER J Chief Financial Officer O Common Stock 32625 $1.13 466,613.0000 54,434,609 7.52% 0.06%
Feb. 24, 2025 Capponi Vincent President and COO O Series A Right Warrants (right to buy) 12000 $1.13 0.0000 54,434,609 100.00% 0.02%
Feb. 24, 2025 MARIANI PETER J Chief Financial Officer O Series A Right Warrants (right to buy) 32625 $1.13 0.0000 54,434,609 100.00% 0.06%
Jan. 17, 2025 MARIANI PETER J Chief Financial Officer J Series B Right Warrants 32625 $0.00 32,625.0000 54,434,609 9999.99% 0.06%
Jan. 17, 2025 MARIANI PETER J Chief Financial Officer J Series A Right Warrants 32625 $0.00 32,625.0000 54,434,609 9999.99% 0.06%
Jan. 17, 2025 BATOR MICHAEL G. Director X Common Stock 15879 $1.00 141,273.0000 54,434,609 12.66% 0.03%
Jan. 17, 2025 BATOR MICHAEL G. Director X Subscription Rights (right to buy) 15879 $0.00 0.0000 54,434,609 100.00% 0.03%
Jan. 17, 2025 BATOR MICHAEL G. Director J Series A Right Warrants 15879 $0.00 15,879.0000 54,434,609 9999.99% 0.03%
Jan. 17, 2025 BATOR MICHAEL G. Director J Series B Right Warrants 15879 $0.00 15,879.0000 54,434,609 9999.99% 0.03%
Jan. 17, 2025 Capponi Vincent President and COO X Common Stock 31760 $1.00 665,168.0000 54,434,609 5.01% 0.06%
Jan. 17, 2025 Capponi Vincent President and COO X Subscription Rights (right to buy) 31760 $0.00 0.0000 54,434,609 100.00% 0.06%
Jan. 17, 2025 Capponi Vincent President and COO J Series A Right Warrants 31760 $0.00 31,760.0000 54,434,609 9999.99% 0.06%
Jan. 17, 2025 Capponi Vincent President and COO J Series B Right Warrants 31760 $0.00 31,760.0000 54,434,609 9999.99% 0.06%
Jan. 17, 2025 Deliargyris Efthymios Chief Medical Officer X Common Stock 16233 $1.00 403,025.0000 54,434,609 4.20% 0.03%
Jan. 17, 2025 Deliargyris Efthymios Chief Medical Officer X Subscription Rights (right to buy) 16233 $0.00 0.0000 54,434,609 100.00% 0.03%
Jan. 17, 2025 Deliargyris Efthymios Chief Medical Officer J Series A Right Warrants 16233 $0.00 16,233.0000 54,434,609 9999.99% 0.03%
Jan. 17, 2025 Deliargyris Efthymios Chief Medical Officer J Series B Right Warrants 16233 $0.00 16,233.0000 54,434,609 9999.99% 0.03%
Jan. 17, 2025 Sobel Alan D. Director X Common Stock 21950 $1.00 125,807.0000 54,434,609 21.13% 0.04%
Jan. 17, 2025 Sobel Alan D. Director X Subscription Rights (right to buy) 21950 $0.00 0.0000 54,434,609 100.00% 0.04%
Jan. 17, 2025 Sobel Alan D. Director J Series A Right Warrants 21950 $0.00 21,950.0000 54,434,609 9999.99% 0.04%
Jan. 17, 2025 Sobel Alan D. Director J Series B Right Warrants 21950 $0.00 21,950.0000 54,434,609 9999.99% 0.04%
Jan. 17, 2025 Chan Phillip P. Chief Executive Officer X Common Stock 90832 $1.00 1,243,195.0000 54,434,609 7.88% 0.17%
Jan. 17, 2025 Chan Phillip P. Chief Executive Officer X Subscription Rights (right to buy) 90832 $0.00 0.0000 54,434,609 100.00% 0.17%
Jan. 17, 2025 Chan Phillip P. Chief Executive Officer J Series A Right Warrants 90832 $0.00 90,832.0000 54,434,609 9999.99% 0.17%
Jan. 17, 2025 Chan Phillip P. Chief Executive Officer J Series B Right Warrants 90832 $0.00 90,832.0000 54,434,609 9999.99% 0.17%
Jan. 17, 2025 MARIANI PETER J Chief Financial Officer X Common Stock 32625 $1.00 433,988.0000 54,434,609 8.13% 0.06%
Jan. 17, 2025 MARIANI PETER J Chief Financial Officer X Subscription Rights (right to buy) 32625 $0.00 0.0000 54,434,609 100.00% 0.06%
Dec. 13, 2024 MARIANI PETER J Chief Financial Officer P Common Stock 20000 $0.96 401,363.0000 54,453,006 5.24% 0.04%
Dec. 12, 2024 MARIANI PETER J Chief Financial Officer P Common Stock 20000 $0.89 381,363.0000 54,453,006 5.53% 0.04%
Dec. 11, 2024 MARIANI PETER J Chief Financial Officer P Common Stock 11363 $0.89 361,363.0000 54,453,006 3.25% 0.02%
Oct. 4, 2024 Deliargyris Efthymios Chief Medical Officer A Stock Option (Right to Buy) 50000 $0.00 50,000.0000 54,453,006 9999.99% 0.09%
Oct. 4, 2024 Capponi Vincent President and COO A Stock Option (Right to Buy) 100000 $0.00 100,000.0000 54,453,006 9999.99% 0.18%
Oct. 4, 2024 Capponi Vincent President and COO A Stock Option (Right to Buy) 50000 $0.00 50,000.0000 54,453,006 9999.99% 0.09%
Oct. 4, 2024 Deliargyris Efthymios Chief Medical Officer A Stock Option (Right to Buy) 100000 $0.00 100,000.0000 54,453,006 9999.99% 0.18%
Aug. 14, 2024 MARIANI PETER J Chief Financial Officer A Common Stock 65000 $0.00 175,000.0000 54,306,041 59.09% 0.12%
Aug. 14, 2024 MARIANI PETER J Chief Financial Officer A Common Stock 175000 $0.00 350,000.0000 54,306,041 100.00% 0.32%
Aug. 14, 2024 MARIANI PETER J Chief Financial Officer A Stock Option (right to buy) 80000 $0.00 80,000.0000 54,306,041 9999.99% 0.15%
Aug. 14, 2024 MARIANI PETER J Chief Financial Officer A Stock Option (right to buy) 215000 $0.00 215,000.0000 54,306,041 9999.99% 0.40%
Aug. 14, 2024 MARIANI PETER J Chief Financial Officer A Common Stock 110000 $0.00 110,000.0000 54,306,041 9999.99% 0.20%
April 2, 2024 BLOCH KATHLEEN P. Chief Financial Officer A Common Stock 65000 $0.00 532,941.0000 54,434,609 13.89% 0.12%
April 2, 2024 Jones Edward Raymond Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 54,434,609 9999.99% 0.04%
April 2, 2024 Deliargyris Efthymios Chief Medical Officer A Common Stock 61000 $0.00 409,433.0000 54,434,609 17.51% 0.11%
April 2, 2024 Deliargyris Efthymios Chief Medical Officer A Stock Option (Right to Buy) 86000 $0.00 86,000.0000 54,434,609 9999.99% 0.16%
April 2, 2024 Sobel Alan D. Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 54,434,609 9999.99% 0.04%
April 2, 2024 BLOCH KATHLEEN P. Chief Financial Officer A Stock Option (Right to Buy) 87000 $0.00 87,000.0000 54,434,609 9999.99% 0.16%
April 2, 2024 BATOR MICHAEL G. Director A Stock Option (Right to Buy) 44000 $0.00 44,000.0000 54,434,609 9999.99% 0.08%
April 2, 2024 Capponi Vincent President and COO A Common Stock 81000 $0.00 665,134.0000 54,434,609 13.87% 0.15%
April 2, 2024 Capponi Vincent President and COO A Stock Option (Right to Buy) 101000 $0.00 101,000.0000 54,434,609 9999.99% 0.19%
April 2, 2024 Kim Jiny Director A Stock Option (Right to Buy) 22000 $0.00 22,000.0000 54,434,609 9999.99% 0.04%
April 2, 2024 Chan Phillip P. Chief Executive Officer A Common Stock 96000 $0.00 1,164,704.0000 54,434,609 8.98% 0.18%
April 2, 2024 Chan Phillip P. Chief Executive Officer A Stock Option (Right to Buy) 124000 $0.00 124,000.0000 54,434,609 9999.99% 0.23%
March 29, 2024 Capponi Vincent President and COO A Stock Option (Right to Buy) 48923 $0.00 48,923.0000 44,656,391 9999.99% 0.11%
March 29, 2024 BLOCH KATHLEEN P. Chief Financial Officer A Stock Option (Right to Buy) 49038 $0.00 49,038.0000 44,656,391 9999.99% 0.11%
March 29, 2024 Chan Phillip P. Chief Executive Officer A Stock Option (Right to Buy) 129998 $0.00 129,998.0000 44,656,391 9999.99% 0.29%
March 29, 2024 Deliargyris Efthymios Chief Medical Officer A Stock Option (Right to Buy) 47088 $0.00 47,088.0000 44,656,391 9999.99% 0.11%
Dec. 13, 2023 Sobel Alan D. Director P Common Stock 22557 $1.33 103,857.0000 44,373,969 27.75% 0.05%
Dec. 13, 2023 Sobel Alan D. Director P Common Stock Warrant (Right to Buy) 7894 $0.00 7,894.0000 44,373,969 9999.99% 0.02%
Dec. 13, 2023 Deliargyris Efthymios Chief Medical Officer P Common Stock 22557 $1.33 348,433.0000 44,373,969 6.92% 0.05%
Dec. 13, 2023 Deliargyris Efthymios Chief Medical Officer P Common Stock Warrant (Right to Buy) 7894 $0.00 7,894.0000 44,373,969 9999.99% 0.02%
Dec. 13, 2023 Capponi Vincent President & COO P Common Stock 18797 $1.33 584,134.0000 44,373,969 3.32% 0.04%
Dec. 13, 2023 Capponi Vincent President & COO P Common Stock Warrant (Right to Buy) 6578 $0.00 6,578.0000 44,373,969 9999.99% 0.01%
Dec. 13, 2023 BATOR MICHAEL G. Director P Common Stock 37594 $1.33 125,394.0000 44,373,969 42.82% 0.08%
Dec. 13, 2023 BATOR MICHAEL G. Director P Common Stock Warrant (Right to Buy) 13157 $0.00 13,157.0000 44,373,969 9999.99% 0.03%
Dec. 13, 2023 Jones Edward Raymond Director P Common Stock 7519 $1.33 88,834.0000 44,373,969 9.25% 0.02%
Dec. 13, 2023 Jones Edward Raymond Director P Common Stock Warrant (Right to Buy) 2631 $0.00 2,631.0000 44,373,969 9999.99% 0.01%
Dec. 13, 2023 BLOCH KATHLEEN P. Chief Financial Officer P Common Stock 37594 $1.33 467,941.0000 44,373,969 8.74% 0.08%
Dec. 13, 2023 BLOCH KATHLEEN P. Chief Financial Officer P Common Stock Warrant (Right to Buy) 13157 $0.00 13,157.0000 44,373,969 9999.99% 0.03%
Dec. 13, 2023 Kim Jiny Director P Common Stock 7519 $1.33 77,819.0000 44,373,969 10.70% 0.02%
Dec. 13, 2023 Kim Jiny Director P Common Stock Warrant (Right to Buy) 2631 $0.00 2,631.0000 44,373,969 9999.99% 0.01%
Dec. 13, 2023 Chan Phillip P. Chief Executive Officer P Common Stock 75188 $1.33 1,068,704.0000 44,373,969 7.57% 0.17%
Dec. 13, 2023 Chan Phillip P. Chief Executive Officer P Common Stock Warrant (Right to Buy) 26315 $0.00 26,315.0000 44,373,969 9999.99% 0.06%
Sept. 18, 2023 BLOCH KATHLEEN P. Chief Financial Officer A Common Stock 45000 $0.00 442,347.0000 44,015,380 11.33% 0.10%
Sept. 18, 2023 BLOCH KATHLEEN P. Chief Financial Officer A Stock Option (Right to Buy) 30000 $0.00 30,000.0000 44,015,380 9999.99% 0.07%
Aug. 4, 2023 BATOR MICHAEL G. Director P Common Stock 1000 $3.23 85,800.0000 44,015,380 1.18% 0.00%
Aug. 7, 2023 BATOR MICHAEL G. Director P Common Stock 1000 $3.20 86,800.0000 44,015,380 1.17% 0.00%
Aug. 7, 2023 BATOR MICHAEL G. Director P Common Stock 1000 $3.15 87,800.0000 44,015,380 1.15% 0.00%
July 7, 2023 BLOCH KATHLEEN P. Interim CFO A Stock Option (Right to Buy) 20000 $0.00 20,000.0000 44,015,380 9999.99% 0.05%
July 7, 2023 Chan Phillip P. Chief Executive Officer A Common Stock 87000 $0.00 1,006,548.0000 44,015,380 9.46% 0.20%
July 7, 2023 Chan Phillip P. Chief Executive Officer A Stock Option (right to buy) 112000 $0.00 112,000.0000 44,015,380 50.00% 0.25%
July 7, 2023 Chan Phillip P. Chief Executive Officer A Stock Option (right to buy) 48000 $0.00 48,000.0000 44,015,380 50.00% 0.11%
July 7, 2023 BATOR MICHAEL G. Director A Stock Option (right to buy) 40000 $0.00 40,000.0000 44,015,380 9999.99% 0.09%
July 7, 2023 Sobel Alan D. Director A Stock Option (right to buy) 20000 $0.00 20,000.0000 44,015,380 9999.99% 0.05%
July 7, 2023 Jones Edward Raymond Director A Stock Option (right to buy) 20000 $0.00 20,000.0000 44,015,380 9999.99% 0.05%
July 7, 2023 Kim Jiny Director A Stock Option (right to buy) 20000 $0.00 20,000.0000 44,015,380 9999.99% 0.05%
July 7, 2023 Capponi Vincent President & COO A Common Stock 73000 $0.00 576,153.0000 44,015,380 14.51% 0.17%
July 7, 2023 Capponi Vincent President & COO A Stock Option (right to buy) 91000 $0.00 91,000.0000 44,015,380 9999.99% 0.21%
July 7, 2023 Capponi Vincent President & COO A Stock Option (right to buy) 42000 $0.00 42,000.0000 44,015,380 9999.99% 0.10%
July 7, 2023 Deliargyris Efthymios Chief Medical Officer A Common Stock 55000 $0.00 331,648.0000 44,015,380 19.88% 0.12%
July 7, 2023 Deliargyris Efthymios Chief Medical Officer A Stock Option (right to buy) 78000 $0.00 78,000.0000 44,015,380 9999.99% 0.18%
July 7, 2023 Deliargyris Efthymios Chief Medical Officer A Stock Option (right to buy) 40000 $0.00 40,000.0000 44,015,380 9999.99% 0.09%
May 25, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 1100 $2.85 442,147.0000 43,676,435 0.25% 0.00%
May 25, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 1100 $2.84 443,247.0000 43,676,435 0.25% 0.00%
May 25, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 1100 $2.85 444,347.0000 43,676,435 0.25% 0.00%
May 10, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 5000 $3.06 436,047.0000 43,676,435 1.16% 0.01%
May 10, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 2000 $3.13 438,047.0000 43,676,435 0.46% 0.00%
May 10, 2023 BLOCH KATHLEEN P. Interim CFO P Common Stock 3000 $3.17 441,047.0000 43,676,435 0.68% 0.01%
April 4, 2023 Capponi Vincent See Remarks M Common Stock 10000 $2.88 511,989.0000 43,676,435 1.99% 0.02%
April 4, 2023 Capponi Vincent See Remarks M Stock Option (right to buy) 10000 $0.00 0.0000 43,676,435 100.00% 0.02%
April 3, 2023 Chan Phillip P. Chief Executive Officer M Common Stock 30500 $2.88 927,779.0000 43,676,435 3.40% 0.07%
April 3, 2023 Chan Phillip P. Chief Executive Officer M Stock Option (right to buy) 30500 $0.00 0.0000 43,676,435 100.00% 0.07%
Feb. 27, 2023 Sobel Alan D. Director G Common Stock 2000 $0.00 81,300.0000 43,573,215 2.52% 0.00%
Feb. 27, 2023 Sobel Alan D. Director G Common Stock 2000 $0.00 81,300.0000 43,573,215 2.40% 0.00%
Feb. 6, 2023 Kraus Al Director M Common Stock 12000 $2.65 142,046.0000 43,573,215 9.23% 0.03%
Feb. 6, 2023 Kraus Al Director M Stock Option (right to buy) 12000 $0.00 0.0000 43,573,215 100.00% 0.03%