As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Viskase Holdings, Inc. The largest reported stake is Carl C Icahn's, at 93.7%. 3 filings are on record since October 24, 2025 (Schedule 13D/A, March 27, 2026).
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Key facts
- · Holder: Carl C Icahn · Percent: 93.7% · SCHEDULE 13D/A
- · Holder: Carl C Icahn · Percent: 48.6% · SCHEDULE 13D/A
- · Holder: Carl C Icahn · Percent: 48.6% · SCHEDULE 13D/A
Viskase Holdings, Inc. has 3 Schedule 13D or 13G filings on record since 2025-10-24. 1 holder's latest filing reports 5% or more of common stock, par value $0.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 93.7% | 13,426,451 | SCHEDULE 13D/A, 2026-03-27 | 2026-03-25 |
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More on Viskase Holdings, Inc. and the records around it.
Viskase Holdings, Inc. elsewhere on the record
- Leadership changes May 2026
- Acquisition Mar 2026
Companies that share a holder
- CARL C ICAHN also filed stake reports on 8 other companies: Icahn Enterprises L.P. (Sep 2026), JETBLUE AIRWAYS CORP (Aug 2026), Southwest Gas Holdings, Inc. (Jan 2026)
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Purpose of Transaction (Item 4)
Carl C Icahn
Item 4 of the Original 13D is hereby amended and supplemented as follows: On March 25, 2026, in connection with the closing of the previously announced Merger between the Issuer and Viskase Companies, Inc. ("Viskase") and pursuant to the terms of the IEH Support Agreement, the Reporting Persons exchanged 39,277 shares of Preferred Stock for 5,658,396 shares of the Issuer's Common Stock. On March 26, 2026 (the "Closing Date"), the Issuer completed the Merger with Viskase pursuant to the Merger Agreement. In connection with the Merger and pursuant to the Merger Agreement, the Reporting Persons received 7,407,489 shares of the Issuer in exchange for 150,810,078 shares of Viskase. Robert Flint, Colin Kwak, and Dustin DeMaria were appointed to the Issuer's board of directors in connection with the closing of the Merger. Mr. Flint is the Chief Accounting Officer of Icahn Enterprises L.P. Mr. Kwak is the head trader at Icahn Capital LP, an affiliate of the Reporting Persons. Mr. DeMaria is a Senior Analyst at Ichan Enterprises L.P., an affiliate of the Reporting Persons.Item 4 of the SCHEDULE 13D/A filed 2026-03-27
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-10-24 | Carl C Icahn | 48.6% | SCHEDULE 13D/A |
| 2026-01-30 | Carl C Icahn | 48.6% | SCHEDULE 13D/A |
| 2026-03-27 | Carl C Icahn | 93.7% | SCHEDULE 13D/A |
Questions about who owns Viskase Holdings, Inc.
Who owns Viskase Holdings, Inc.?
On this page, one holder's latest ownership filing reports 5% or more of Viskase Holdings, Inc.: Carl C Icahn (93.7%, Schedule 13D/A, filed 2026-03-27).
When did Carl C Icahn buy into Viskase Holdings, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Carl C Icahn on this page is the Schedule 13D/A, filed 2025-10-24, reporting 48.6%; its latest, Schedule 13D/A filed 2026-03-27, reports 93.7%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 3 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Viskase Holdings, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| May 1, 2026 | Leadership change: Peter K. Shea departs, Director, and 2 more | — | Leadership changes | Source |
| April 15, 2026 | Leadership change: Michael Blecic appointed, Chief Financial Officer, and 1 more | — | Leadership changes | Source |
| March 26, 2026 | Acquired Viskase Companies, Inc. | — | Acquisition | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.