Viskase Holdings, Inc.
VISK- Exchange
- OTC
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000727510
No open-market purchases or sales by Viskase Holdings, Inc. insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.
Holders of 5% or more of VISK
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Viskase Holdings, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Icahn Carl CSuperinvestorIcahn Capital | 13D/A | 93.70%13.4M shares | +45.10 ppfrom 48.60% | Dec 19, 20245 filings | Mar 27, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
5 Schedule 13D and 13G filings on Viskase Holdings, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 20267:48 PM ET | Icahn Carl Cand 2 othersSuperinvestorIcahn Capital | 13D/A | 93.70%13.4M shares | +45.10 ppfrom 48.60% | Mar 25, 2026 | SEC |
| Jan 30, 20266:02 PM ET | Icahn Carl Cand 2 othersSuperinvestorIcahn Capital | 13D/A | 48.60%36.1M shares | 0.00 ppfrom 48.60% | Jan 30, 2026 | SEC |
| Oct 24, 20254:14 PM ET | Icahn Carl Cand 2 othersSuperinvestorIcahn Capital | 13D/A | 48.60%36.1M shares | 0.00 ppfrom 48.60% | Oct 24, 2025 | SEC |
| Jun 23, 20258:19 AM ET | Icahn Carl Cand 2 othersSuperinvestorIcahn Capital | 13D/A | 48.60%36.1M shares | 0.00 ppfrom 48.60% | Jun 20, 2025 | SEC |
| Dec 19, 20244:30 PM ET | Icahn Carl Cand 9 othersSuperinvestorIcahn Capital | 13D/A | 48.60%36.1M shares | – | Dec 19, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Viskase Holdings, Inc. shares.
No Form 144 notices for Viskase Holdings, Inc. are on file.