Cytosorbents Corp

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Cytosorbents Corp
TickerCTSO
CIK #0001175151
CUSIP23283X206
SectorLife Sciences - Surgical & Medical Instruments & Apparatus
Address7 Deer Park Drive, Suite K, Monmouth Junction, NJ 08852
Source [EDGAR]
Reg D Offering (Form D) Filed Raised Terms
Cytosorbents Corp 2013-10-11 0.7 M Exemption: 506(b) · Duration: One year or less · Commission: $16,450 · Revenue: $1,000,001 - $5,000,000
CIK Filing 2011 - 2026
[0001175151] 10-K
[0001175151] 10-Q
[0001175151] 3
[0001175151] 4
[0001175151] 5
[0001175151] 8-K
[0001175151] D
[0001175151] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Avenue Venture Opportunities Fund LP Cytosorbents Corp [2025-05-28] 0.0
Skylands Capital LLC Cytosorbents Corp [2025-04-17] 0.0
Vanguard Group Inc Cytosorbents Corp [2025-01-31] 0.0
Satterfield Thomas A Jr Cytosorbents Corp [2025-01-17] 0.0
Skylands Capital LLC Cytosorbents Corp [2025-01-07] 0.0
Granahan Investment Management LLC Cytosorbents Corp [2024-02-14] 6.93
Avenir Corp Cytosorbents Corp [2024-02-14] 6.87
Skylands Capital LLC Cytosorbents Corp [2024-01-08] 7.3
Skylands Capital LLC Cytosorbents Corp [2023-02-07] 5.8
Avenir Corp Cytosorbents Corp [2022-08-11] 5.02
BlackRock Inc Cytosorbents Corp [2022-07-08] 1.7
Avenir Corp Cytosorbents Corp [2022-04-25] 5.0
Avenir Corp Cytosorbents Corp [2021-12-13] 5.16
Vanguard Group Inc Cytosorbents Corp [2021-02-10] 5.15
BlackRock Inc Cytosorbents Corp [2019-02-08] 6.3
Form 3/4/5 Filer 2011 - 2026
Mariani Peter J
Cytosorbents Corp
Chan Phillip P
Bator Michael G
Kim Jiny
Capponi Vincent
Deliargyris Efthymios
Sobel Alan D
Jones Edward Raymond
Bloch Kathleen P
D'Amico Alex
Kraus Al
Mortensen Eric R
Bartlett Robert Hawes
NJTC Investment Fund LP
Gunton James T
Shipley Robert
Rubin Joseph
Berger Ronald
Bocchino Thomas
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Chan Phillip P
Common Stock
2025-11-18 Grant 100,000 $0.64 64,000
Kim Jiny
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 22,000 $0.00
Mariani Peter J
Common Stock
2025-08-08 Grant 71,500 $0.00
Chan Phillip P
Common Stock
2025-08-08 Grant 105,600 $0.00
Chan Phillip P
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 136,400 $0.00
Bator Michael G
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 44,000 $0.00
Deliargyris Efthymios
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 95,000 $0.00
Mariani Peter J
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 90,000 $0.00
Sobel Alan D
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 22,000 $0.00
Capponi Vincent
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 111,100 $0.00
Capponi Vincent
Common Stock
2025-08-08 Grant 89,100 $0.00
Deliargyris Efthymios
Common Stock
2025-08-08 Grant 70,000 $0.00
Jones Edward Raymond
Stock Option (Right to Buy) · derivative
2025-08-08 Grant 22,000 $0.00
Chan Phillip P
Series A Right Warrants (right to buy) · derivative
2025-02-24 Out-of-money exercise 34,168 $1.13 38,610
Mariani Peter J
Series A Right Warrants (right to buy) · derivative
2025-02-24 Out-of-money exercise 32,625 $1.13 36,866
Capponi Vincent
Series A Right Warrants (right to buy) · derivative
2025-02-24 Out-of-money exercise 12,000 $1.13 13,560
Bator Michael G
Series A Right Warrants (right to buy) · derivative
2025-02-24 Out-of-money exercise 15,879 $1.13 17,943
Sobel Alan D
Series A Right Warrants (right to buy) · derivative
2025-02-24 Out-of-money exercise 21,950 $1.13 24,803
Capponi Vincent
Common Stock
2025-02-24 Out-of-money exercise 12,000 $1.13 13,560
Bator Michael G
Common Stock
2025-02-24 Out-of-money exercise 10,000 $1.13 11,300
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 50 16,471,131
2025-12-31 51 16,863,150
2025-09-30 49 16,335,406
2025-06-30 46 16,361,658
2025-03-31 50 16,952,549
2024-12-31 53 15,348,252
2024-09-30 54 16,510,304
2024-06-30 52 16,672,442
2024-03-31 51 17,824,279
2023-12-31 55 18,188,887
2023-09-30 54 15,243,693
2023-06-30 59 15,233,115
Form 13F Holdings
Firm Period DFND Voting Shares
Key Client Fiduciary Advisors LLC [2026-06-30] SOLE 78,457 78,457
Seelaus Asset Management LLC [2026-06-30] SOLE 16,300 16,300
Merit Financial Group LLC [2026-06-30] SOLE 0 15,297
Farther Finance Advisors LLC [2026-06-30] SOLE 0 6
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