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[SCHEDULE 13D/A] ENZON PHARMACEUTICALS, INC. SEC Filing

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SCHEDULE 13D/A

Rhea-AI Filing Summary

Enzon Pharmaceuticals (ENZN) filed Amendment No. 17 to Schedule 13D reflecting updated terms to its merger with Viskase. The amendment states that current Viskase stockholders will own 55% of the combined company after the merger, the exchange ratio for Enzon’s Series C Preferred will be based on the 20‑Day VWAP, and Enzon will conduct a 1‑for‑100 reverse stock split before the merger’s effective time. The minimum cash required at closing is reduced, and the outside date to terminate the agreement is extended to March 31, 2026.

Icahn Enterprises Holdings agreed to deliver written consents approving the merger and a charter amendment, and to exchange all of its Series C Preferred into common shares based on full liquidation preference and the 20‑Day VWAP. The filing reports 36,056,636 shares beneficially owned with 48.6% of the class, with shared voting and dispositive power.

Positive

  • None.

Negative

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Insights

Merger terms reset: 55% to Viskase holders; reverse split; deadline extended.

The amended deal reallocates ownership so that Viskase holders will own 55% post‑merger, clarifying the exchange mechanics. Enzon will implement a 1‑for‑100 reverse stock split prior to closing, which adjusts the share count without altering proportional interests.

The parties reduced Enzon’s minimum cash at closing and extended the outside date to March 31, 2026. Icahn affiliates committed to deliver written consents and to exchange all Series C Preferred into common based on the 20‑Day VWAP and full liquidation preference, simplifying the capital structure at closing.

The amendment includes waivers of certain known Viskase breaches as of Oct 24, 2025 and refines “Material Adverse Effect” with a knowledge qualifier. Actual outcomes depend on completion conditions and holder actions disclosed in the agreements.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D




Comment for Type of Reporting Person:
The Reporting Person may also be deemed to beneficially own shares of Preferred Stock.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Reporting Person may also be deemed to beneficially own shares of Preferred Stock.


SCHEDULE 13D




Comment for Type of Reporting Person:
The Reporting Person may also be deemed to beneficially own shares of Preferred Stock.


SCHEDULE 13D


CARL C ICAHN
Signature:/s/ Carl C. Icahn
Name/Title:Carl C. Icahn
Date:10/24/2025
ICAHN ENTERPRISES HOLDINGS L.P.
Signature:/s/ Ted Papapostolou
Name/Title:Ted Papapostolou, Chief Financial Officer
Date:10/24/2025
ICAHN ENTERPRISES G.P. INC.
Signature:/s/ Ted Papapostolou
Name/Title:Ted Papapostolou, Chief Financial Officer
Date:10/24/2025

FAQ

What did ENZN change in the Viskase merger terms?

Viskase holders will own 55% post‑merger, the Series C Preferred exchange uses the 20‑Day VWAP, and Enzon will do a 1‑for‑100 reverse split.

What is Carl Icahn’s reported ownership in ENZN?

The filing reports 36,056,636 shares beneficially owned, representing 48.6% of the class, with shared voting and dispositive power.

Did ENZN extend the merger outside date?

Yes. The termination right date moved to March 31, 2026.

What did Icahn Enterprises agree to under the Support Agreement?

To deliver written consents approving the merger and charter amendment, and to exchange all Series C Preferred into common based on full liquidation preference and the 20‑Day VWAP.

Will ENZN conduct a reverse stock split?

Yes. Enzon will effect a 1‑for‑100 reverse stock split before the merger’s effective time.

Were there changes to conditions and representations?

The amendment includes waivers of certain known Viskase breaches as of Oct 24, 2025 and modifies the Material Adverse Effect definition with a knowledge qualifier.
Enzon Pharma

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