13D Filings
VISKASE HOLDINGS, INC.
ENZN
Amendment
Ownership

93.70%

Total Shares

13,426,451

Issuer CIK

727510

Event Date

Mar 24, 2026

Accepted

Mar 27, 2026, 07:48 PM

Reporting Persons (3)
Joint Filing

This is a joint filing. The reported shares may overlap between reporting persons and should not be summed.

NameType% of ClassAggregateSole VotingShared Voting
CARL C ICAHN
Individual
93.70%13,426,451013,426,451
ICAHN ENTERPRISES HOLDINGS L.P.
Partnership
93.70%13,426,451013,426,451
ICAHN ENTERPRISES G.P. INC.
CO
93.70%13,426,451013,426,451
Disclosure Items (3)

Security Title

Common Stock, par value $0.01 per share

Issuer Name

VISKASE HOLDINGS, INC.

Issuer Address

333 East Butterfield Road, Lombard, IL, 60148

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.

Percentage of Class

Items (a)-(c) of the Original 13D are hereby amended and supplemented as follows: The information set forth in rows 11 and 13 of the cover pages hereto is incorporated herein by reference. The percentages set forth on the cover pages are based on 14,331,713 outstanding Shares as of March 26, 2026, as reported by the Issuer to the Reporting Persons.

Number of Shares

The information set forth in rows 7-10 of the cover pages hereto is incorporated herein by reference.

Transactions

The information set forth in Item 4 herein is incorporated herein by reference. Except for the transaction set forth in Item 4, none of the Reporting Persons effected any transaction in the Shares in the past 60 days.

VISKASE HOLDINGS, INC. — Schedule 13D | 13D Filings