Cytosorbents Corp
Total Trades
17
Buys
17
Sells
0
Largest Trade
$50K–$100K
Insiders
8
Institutional Funds
36
Inst. Value
$1M+
Activist Filings
18
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| BATOR MICHAEL G. | Director | BUY | $1K–$15K | 3K | $3.19 | Aug 9, 2023 |
| BLOCH KATHLEEN P. | Interim CFO | BUY | $1K–$15K | 3K | $2.85 | May 30, 2023 |
| BLOCH KATHLEEN P. | Interim CFO | BUY | $15K–$50K | 10K | $3.11 | May 12, 2023 |
| Chan Phillip P. | CEO | BUY | $1K–$15K | 6K | $1.26 | Dec 9, 2022 |
| Chan Phillip P. | CEO | BUY | $15K–$50K | 24K | $1.26 | Dec 8, 2022 |
| Chan Phillip P. | CEO | BUY | $50K–$100K | 35K | $1.70 | Sep 12, 2022 |
| Kim Jiny | Director | BUY | $1K–$15K | 1K | $1.91 | Aug 26, 2022 |
| Capponi Vincent | President and COO | BUY | $1K–$15K | 2K | $1.80 | Jun 22, 2022 |
| Capponi Vincent | See Remarks | BUY | $1K–$15K | 3K | $2.00 | Jun 21, 2022 |
| Chan Phillip P. | CEO | BUY | $1K–$15K | 2K | $1.85 | Jun 21, 2022 |
| Chan Phillip P. | CEO | BUY | $15K–$50K | 16K | $2.17 | Jun 10, 2022 |
| Capponi Vincent | President and COO | BUY | $1K–$15K | 5K | $2.03 | May 25, 2022 |
| BATOR MICHAEL G. | Director | BUY | $15K–$50K | 11K | $2.19 | May 19, 2022 |
| Jones Edward Raymond | Director | BUY | $1K–$15K | 2K | $2.24 | May 17, 2022 |
| Sobel Alan D. | Director | BUY | $15K–$50K | 10K | $2.02 | May 12, 2022 |
| Kraus Al | Director | BUY | $1K–$15K | 5K | $1.96 | May 9, 2022 |
| Chan Phillip P. | CEO | BUY | $50K–$100K | 15K | $4.05 | Jan 4, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 36 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| AVENIR CORP | 5.2M | $1M+ | SH |
| Skylands Capital, LLC | 1.9M | $1M+ | SH |
| Neuberger Berman Group LLC | 1.6M | $1M+ | SH |
| CM Management, LLC | 1.5M | $500K+ | SH |
| Sargent Investment Group, LLC | 612K | $100K–$500K | SH |
| Pathstone Holdings, LLC | 500K | $100K–$500K | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 496K | $100K–$500K | SH |
| VANGUARD GROUP INC | 314K | $100K–$500K | SH |
| CIBC Private Wealth Group LLC | 173K | $100K–$500K | SH |
| STATE STREET CORP | 159K | $100K–$500K | SH |
| GSA CAPITAL PARTNERS LLP | 148K | $50K–$100K | SH |
| UBS Group AG | 115K | $50K–$100K | SH |
| NWF Advisory Services Inc. | 104K | $50K–$100K | SH |
| RENAISSANCE TECHNOLOGIES LLC | 100K | $50K–$100K | SH |
| Key Client Fiduciary Advisors, LLC | 78K | $50K–$100K | SH |
| RAYMOND JAMES FINANCIAL INC | 50K | $15K–$50K | SH |
| STIFEL FINANCIAL CORP | 48K | $15K–$50K | SH |
| EP Wealth Advisors, LLC | 28K | $15K–$50K | SH |
| Kestra Advisory Services, LLC | 26K | $15K–$50K | SH |
| GOLDMAN SACHS GROUP INC | 25K | $15K–$50K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 13, 2026
8.3%
5.2M shares
Avenue Venture Opportunities Fund, L.P.
SC 13G · May 28, 2025
1.7%
1.1M shares
SC 13G/A · Apr 30, 2025
3.1%
1.9M shares
SC 13G · Apr 17, 2025
4.8%
3.0M shares
SC 13G/A · Feb 14, 2025
5.7%
3.1M shares
SC 13G · Jan 31, 2025
7.1%
3.9M shares
SC 13G · Jan 17, 2025
6.6%
4.0M shares
SC 13G · Jan 7, 2025
5.1%
2.8M shares
Granahan Investment Management LLC
SC 13G/A · Nov 14, 2024
3.9%
2.1M shares
SC 13G · Feb 14, 2024
6.9%
3.1M shares
Granahan Investment Management LLC
SC 13G · Feb 14, 2024
6.9%
3.6M shares
SC 13G · Jan 8, 2024
0.0%
0 shares
SC 13G/A · Feb 14, 2023
5.6%
2.4M shares
SC 13G · Aug 11, 2022
5.0%
2.2M shares
SC 13G · Jul 8, 2022
1.7%
745K shares
SC 13G/A · Jun 27, 2022
5.0%
2.2M shares
SC 13G · Apr 22, 2022
5.0%
2.2M shares
SC 13G/A · Jan 7, 2022
4.8%
2.1M shares