Security key
23283X206
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 16,334,989
- Total 13F value
- $15,255,905
- Share change
- -76,161
- SEC-reported price per share
- $0.93
- Number of holders
- 48
- Value change
- -$76,176
- Number of buys
- 21
- Number of sells
- 12
- Shares outstanding
- 63,013,241
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
48
Top holders
10
CTSO full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Cytosorbents Corp SEC filings
Cytosorbents Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23283X206
Recent filing periods:
Ownership snapshot
Top reported holders of CTSO - Cytosorbents Corp - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Thomas A. Satterfield Jr.
Disclosed value leader
AVENIR CORP
Comparable rows
15/15
Latest evidence
30 Jun 2025
13D/G
13F
Lead comparable stake: 6.6%
13D/G row: Thomas A. Satterfield Jr.
Showing 1-6 of 15 holder rows.
Quick read
Thomas A. Satterfield Jr. leads the comparable SEC ownership view at 6.6%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Thomas A. Satterfield Jr.'s linked filing trail.
Comparable ownership
Top 5
Thomas A. Satterfield Jr.
6.6%
Avenue Venture Opportunities Fund...
5.7%
Skylands Capital, LLC
4.8%
VANGUARD GROUP INC
3.1%
AVENIR CORP
8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Thomas A. Satterfield Jr. |
13D/G
|
6.6%
|
$4,638,686
3,998,867 shares
|
$0 | 13 Jan 2025 |
| Avenue Venture Opportunities Fund, L.P. |
13D/G
Avenue Capital Management II, L.P.
|
5.7%
|
$4,356,117
3,755,273 shares
|
$0 | 26 Jun 2024 |
| Skylands Capital, LLC |
13D/G
13F
Company
|
4.8%
|
$3,483,134
3,002,702 shares
|
+$256,453 | 31 Mar 2025 |
| VANGUARD GROUP INC |
13F
13D/G
Company · The Vanguard Group
|
3.1%
from 13D/G
|
$2,719,691
2,124,759 shares
|
— | 30 Jun 2025 |
| AVENIR CORP |
13F
Company
|
8%
|
$6,474,928
5,058,537 shares
|
— | 30 Jun 2025 |
| Neuberger Berman Group LLC |
13F
Company
|
2.5%
|
$2,028,112
1,591,689 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
48
Shares
16,334,989
Rows available
48
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q4 2025 Across Filers
Q4 2025 holders
51
Q3 2025 holders
48
Holder diff
-3
| Investor | Q4 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q4 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend