Companies / Cytosorbents Corp
Cytosorbents Corp
Nasdaq: CTSOCIK 1175151PRINCETON, NJ
Financials · FY2018
Ownership
62.8M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 3.79% | 2,382,545 |
| 10%+ / strategic | 8.32% | 5,230,099 |
| Institutions | 18.28% | 11,489,371 |
| Public float | 69.60% | 43,740,733 |
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 2
View all →| Insider | % of shares | Shares |
|---|---|---|
Chan Phillip P.CEOChief Executive Officer · Director | 2.78% | 1,744,432 |
Mariani Peter JChief Financial Officer | 1.02% | 638,113 |
Institutional holders 52
View all →| Holder | Value | % of shares |
|---|---|---|
| $2.95M | 8.30% | |
| $1.41M | 3.51% | |
| $1.04M | 2.59% | |
| $967.0K | 2.72% | |
| $943.8K | 2.35% | |
| $400.6K | 1.13% | |
| $391.2K | 0.97% | |
| $319.6K | 0.80% | |
| $234.6K | 1.00% | |
| $110.4K | 0.27% |
Activity
Jun 30, 2026View all →
InsidersInstitutions
Who's accumulating and trimming this stock (13F).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Q1 2026 as of | Skylands Capital, LLC 13F manager | Trim | Common Stock | $-83.3K | -147K -7.93% | 1,707,498 2.72% of shares | low |
| Q1 2026 as of | Geode Capital Management, LLC 13F manager | Add | Common Stock | $58.6K | +103K +17.14% | 707,262 1.13% of shares | low |
| Q2 2026 as of | BlackRock, Inc. 13F manager | Trim | Common Stock | $-53.6K | -143K -18.60% | 627,211 1.00% of shares | low |
| Q3 2023 as of | Barclays PLC 13F manager | New | Common Stock | $10.5K | +6K | 5,577 <0.01% of shares | low |
| Q4 2023 as of | Barclays PLC 13F manager | Exit | Common Stock | $-10.5K | -6K -100.00% | — | low |
| Q2 2026 as of | LPL Financial LLC 13F manager | Add | Common Stock | $10.1K | +27K +117.29% | 50,119 0.08% of shares | low |
| Q4 2025 as of | First National Bank of Omaha 13F manager | New | Common Stock | $9.8K | +15K | 15,225 0.02% of shares | low |
| Q1 2026 as of | Avenir Corp 13F manager | Trim | Common Stock | $-8.1K | -14K -0.27% | 5,215,776 8.30% of shares | low |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Avenir Corp | Passive13G/A | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| CTSO | Common Stock | 23283X206 |