Security key
23283X305
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 39,535
- Total 13F value
- $154,186
- Share change
- +39,535
- SEC-reported price per share
- $3.89
- Number of holders
- 2
- Value change
- +$154,186
- Number of buys
- 2
Report period
Q3 2026
Institutions
2
Top holders
2
CTSO full security history
Ownership snapshot
Full 13F holder table
Cytosorbents Corp SEC filings
Cytosorbents Corp company facts
Broader feeds
Reporting periods
Holder history for CUSIP 23283X305
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
AVENIR CORP
Disclosed value leader
Thomas A. Satterfield Jr.
Comparable rows
5/15
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 8.3%
10 rows are not safely comparable across share classes.
13D/G row: AVENIR CORP
Showing 1-6 of 15 holder rows.
Quick read
AVENIR CORP leads the comparable SEC ownership view at 8.3%.
5 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 AVENIR CORP's linked filing trail.
Comparable ownership
Top 5
AVENIR CORP
8.3%
Thomas A. Satterfield Jr.
6.6%
Avenue Venture Opportunities Fund...
5.7%
Skylands Capital, LLC
4.8%
VANGUARD GROUP INC
3.1%
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 |
|---|---|---|---|---|---|
| AVENIR CORP |
13D/G
13F
Company
|
8.3%
Reported 13D/G
· 31 Dec 2025
|
$3,817,972
5,230,099 shares
|
+$1,559,392 | 31 Dec 2025 |
| Thomas A. Satterfield Jr. |
13D/G
|
6.6%
Reported 13D/G
· 13 Jan 2025
|
$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%
Reported 13D/G
· 26 Jun 2024
|
$4,356,117
3,755,273 shares
|
$0 | 26 Jun 2024 |
| Skylands Capital, LLC |
13D/G
13F
Company
|
4.8%
Reported 13D/G
· 31 Mar 2025
|
$3,483,134
3,002,702 shares
|
+$256,453 | 31 Mar 2025 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
3.1%
Reported 13D/G
· 31 Mar 2025
|
$2,261,479
1,949,551 shares
|
-$2,261,479 | 31 Mar 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13F
Company
|
—
denominator unverified
|
$715,860
1,914,063 shares
|
— | 30 Jun 2026 |
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 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
2
Shares
39,535
Rows available
2
| 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 2026 vs Q2 2026 Across Filers
Q2 2026 holders
0
Q3 2026 holders
2
Holder diff
2
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend