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Cytosorbents Corp — Insider Transactions

Form 4 filings by directors, officers, and 10%+ shareholders

SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.

Overview All Filings Annual Quarterly Insiders
Insider Title Type Shares Price Value Owns After Date
Chan Phillip P. Chief Executive Officer Award / Grant 100,000 $0.64 $64,000 1,482,963 Nov 18, 2025
Chan Phillip P. Chief Executive Officer Award / Grant 105,600 1,382,963 Aug 8, 2025
MARIANI PETER J Chief Financial Officer Award / Grant 71,500 538,113 Aug 8, 2025
Capponi Vincent President and COO Award / Grant 89,100 766,268 Aug 8, 2025
Deliargyris Efthymios Chief Medical Officer Award / Grant 70,000 473,025 Aug 8, 2025
BATOR MICHAEL G. O 10,000 $1.13 $11,300 151,273 Feb 24, 2025
Capponi Vincent President and COO O 12,000 $1.13 $13,560 677,168 Feb 24, 2025
MARIANI PETER J Chief Financial Officer O 32,625 $1.13 $36,866 466,613 Feb 24, 2025
Chan Phillip P. Chief Executive Officer O 34,168 $1.13 $38,610 1,277,363 Feb 24, 2025
Sobel Alan D. O 21,950 $1.13 $24,803 145,757 Feb 24, 2025
BATOR MICHAEL G. X 15,879 $1.00 $15,879 141,273 Jan 17, 2025
Capponi Vincent President and COO X 31,760 $1.00 $31,760 665,168 Jan 17, 2025
Deliargyris Efthymios Chief Medical Officer X 16,233 $1.00 $16,233 403,025 Jan 17, 2025
Sobel Alan D. X 21,950 $1.00 $21,950 123,807 Jan 17, 2025
Chan Phillip P. Chief Executive Officer X 90,832 $1.00 $90,832 1,243,195 Jan 17, 2025
MARIANI PETER J Chief Financial Officer X 32,625 $1.00 $32,625 433,988 Jan 17, 2025
MARIANI PETER J Chief Financial Officer Purchase 20,000 $0.96 $19,200 401,363 Dec 13, 2024
MARIANI PETER J Chief Financial Officer Purchase 20,000 $0.89 $17,800 381,363 Dec 11, 2024
MARIANI PETER J Chief Financial Officer Award / Grant 110,000 110,000 Aug 14, 2024
Deliargyris Efthymios Chief Medical Officer Award / Grant 61,000 409,433 Apr 2, 2024
BLOCH KATHLEEN P. Chief Financial Officer Award / Grant 65,000 532,941 Apr 2, 2024
Capponi Vincent President and COO Award / Grant 81,000 665,134 Apr 2, 2024
Chan Phillip P. Chief Executive Officer Award / Grant 96,000 1,164,704 Apr 2, 2024
Sobel Alan D. Purchase 22,557 $1.33 $30,001 101,857 Dec 13, 2023
Deliargyris Efthymios Chief Medical Officer Purchase 22,557 $1.33 $30,001 348,433 Dec 13, 2023
Capponi Vincent President & COO Purchase 18,797 $1.33 $25,000 584,134 Dec 13, 2023
BATOR MICHAEL G. Purchase 37,594 $1.33 $50,000 125,394 Dec 13, 2023
Jones Edward Raymond Purchase 7,519 $1.33 $10,000 88,834 Dec 13, 2023
BLOCH KATHLEEN P. Chief Financial Officer Purchase 37,594 $1.33 $50,000 467,941 Dec 13, 2023
Kim Jiny Purchase 7,519 $1.33 $10,000 77,819 Dec 13, 2023
Chan Phillip P. Chief Executive Officer Purchase 75,188 $1.33 $100,000 1,068,704 Dec 13, 2023
BLOCH KATHLEEN P. Chief Financial Officer Award / Grant 45,000 442,347 Sep 18, 2023
BATOR MICHAEL G. Purchase 1,000 $3.23 $3,230 85,800 Aug 7, 2023
Chan Phillip P. Chief Executive Officer Award / Grant 87,000 1,006,548 Jul 7, 2023
Capponi Vincent President & COO Award / Grant 73,000 576,153 Jul 7, 2023
Deliargyris Efthymios Chief Medical Officer Award / Grant 55,000 331,648 Jul 7, 2023
BLOCH KATHLEEN P. Interim CFO Purchase 1,100 $2.85 $3,135 47,000 May 25, 2023
BLOCH KATHLEEN P. Interim CFO Purchase 2,000 $3.13 $6,260 40,700 May 10, 2023
Capponi Vincent See Remarks Option Exercise 10,000 $2.88 $28,800 511,989 Apr 4, 2023
Chan Phillip P. Chief Executive Officer Option Exercise 30,500 $2.88 $87,840 927,779 Apr 3, 2023
Sobel Alan D. Gift 2,000 81,300 Feb 27, 2023
Kraus Al Option Exercise 12,000 $2.65 $31,800 142,046 Feb 6, 2023
Chan Phillip P. Chief Executive Officer Purchase 5,859 $1.26 $7,382 897,279 Dec 8, 2022
Chan Phillip P. Chief Executive Officer Purchase 14,291 $1.26 $18,007 881,570 Dec 7, 2022
Chan Phillip P. Chief Executive Officer Purchase 35,000 $1.70 $59,500 867,279 Sep 8, 2022
Deliargyris Efthymios Chief Medical Officer Award / Grant 55,000 228,384 Aug 10, 2022
Capponi Vincent President and COO Award / Grant 69,000 512,545 Aug 10, 2022
BLOCH KATHLEEN P. Chief Financial Officer Award / Grant 55,500 405,161 Aug 10, 2022
Chan Phillip P. Chief Executive Officer Award / Grant 79,000 845,130 Aug 10, 2022
Capponi Vincent President and COO Purchase 2,000 $1.80 $3,600 443,545 Jun 21, 2022