CTSO
Cytosorbents Corporation
NASDAQ · Healthcare · Medical - Devices · US
$0.35
+0.03%3
Insider buys (3m)
0
Insider sells (3m)
$148.9K
Net value (3m)
-20.2%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Jun 16, 2026 | MARIANI PETER J · officer: Chief Financial Officer | Purchase | 100,000 | $0.44 |
| Jun 15, 2026 | Chan Phillip P. · director, officer: Chief Executive Officer | Purchase | 251,136 | $0.40 |
| Jun 15, 2026 | Chan Phillip P. · director, officer: Chief Executive Officer | Purchase | 10,333 | $0.43 |
| Nov 20, 2025 | Chan Phillip P. · director, officer: Chief Executive Officer | A-Award | 100,000 | $0.64 |
| Aug 8, 2025 | Kim Jiny · director | A-Award | 22,000 | $1.00 |
| Aug 8, 2025 | Deliargyris Efthymios · officer: Chief Medical Officer | A-Award | 70,000 | $0.00 |
| Aug 8, 2025 | Jones Edward Raymond · director | A-Award | 22,000 | $1.00 |
| Aug 8, 2025 | Chan Phillip P. · director, officer: Chief Executive Officer | A-Award | 105,600 | $0.00 |
| Aug 8, 2025 | Capponi Vincent · officer: President and COO | A-Award | 89,100 | $0.00 |
| Aug 8, 2025 | Sobel Alan D. · director | A-Award | 22,000 | $1.00 |
| Aug 8, 2025 | Capponi Vincent · officer: President and COO | A-Award | 111,100 | $1.00 |
| Aug 8, 2025 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 71,500 | $0.00 |
| Aug 8, 2025 | Chan Phillip P. · director, officer: Chief Executive Officer | A-Award | 136,400 | $1.00 |
| Aug 8, 2025 | BATOR MICHAEL G. · director | A-Award | 44,000 | $1.00 |
| Aug 8, 2025 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 90,000 | $1.00 |
| Aug 8, 2025 | Deliargyris Efthymios · officer: Chief Medical Officer | A-Award | 95,000 | $1.00 |
| Dec 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | Purchase | 20,000 | $0.96 |
| Dec 13, 2024 | MARIANI PETER J · officer: Chief Financial Officer | Purchase | 20,000 | $0.89 |
| Dec 13, 2024 | MARIANI PETER J · officer: Chief Financial Officer | Purchase | 11,363 | $0.89 |
| Oct 8, 2024 | Deliargyris Efthymios · officer: Chief Medical Officer | A-Award | 50,000 | $1.19 |
| Oct 8, 2024 | Capponi Vincent · officer: President and COO | A-Award | 50,000 | $1.19 |
| Oct 8, 2024 | Capponi Vincent · officer: President and COO | A-Award | 100,000 | $1.19 |
| Oct 8, 2024 | Deliargyris Efthymios · officer: Chief Medical Officer | A-Award | 100,000 | $1.19 |
| Aug 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 110,000 | $0.00 |
| Aug 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 175,000 | $0.00 |
| Aug 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 65,000 | $0.00 |
| Aug 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 215,000 | $0.90 |
| Aug 16, 2024 | MARIANI PETER J · officer: Chief Financial Officer | A-Award | 80,000 | $0.90 |
| Apr 4, 2024 | BLOCH KATHLEEN P. · officer: Chief Financial Officer | A-Award | 65,000 | $0.00 |
| Apr 4, 2024 | BLOCH KATHLEEN P. · officer: Chief Financial Officer | A-Award | 87,000 | $0.95 |
Institutional positioning
13F filings over the trailing two quarters
New 10Increased 10Reduced 14Sold out 50
| Filer | Action | Shares | Filed |
|---|---|---|---|
| AVENIR CORP | Reduced | 5,215,776 | May 14, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1,879,989 | May 15, 2026 |
| SKYLANDS CAPITAL, LLC | Reduced | 1,707,498 | Apr 22, 2026 |
| NEUBERGER BERMAN GROUP LLC | Increased | 1,683,007 | May 14, 2026 |
| CM MANAGEMENT, LLC | Unchanged | 1,476,500 | May 8, 2026 |
| BLACKROCK, INC. | Increased | 782,992 | May 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 707,262 | May 15, 2026 |
| SARGENT INVESTMENT GROUP, LLC | Reduced | 549,900 | May 11, 2026 |
| PATHSTONE HOLDINGS, LLC | Unchanged | 499,955 | May 11, 2026 |
| VANGUARD FIDUCIARY TRUST CO | New Position | 313,856 | May 8, 2026 |
| CIBC Bancorp USA Inc. | New Position | 172,649 | May 12, 2026 |
| STATE STREET CORP | Unchanged | 159,293 | May 15, 2026 |
| ADVISOR GROUP HOLDINGS, INC. | Unchanged | 130,419 | May 15, 2026 |
| UBS GROUP AG | Reduced | 115,200 | May 5, 2026 |
| RAYMOND JAMES FINANCIAL INC | Reduced | 107,751 | May 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jun 16, 2026