---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-033624"
form_type: "8-K"
ticker: "ENZN"
cik: "0000727510"
company_name: "Viskase Holdings, Inc."
filed_at: "2026-03-24T23:59:59+00:00"
generated_at: "2026-05-15T09:17:45.615731+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Enzon announces 1-for-100 reverse stock split effective March 24, 2026; pending merger with Viskase

## Summary
- Reverse stock split effective 4:30 pm ET March 24; OTCQB trading starts March 25 under symbol ENZND for 20 days.
- Every 100 shares combined into 1; fractional shares paid in cash; par value unchanged.
- Split required to reserve authorized shares for closing merger with Viskase Companies, Inc.
- Exchange offer for Series C Preferred expires 5:00 pm ET March 24; merger closing expected soon after.
- Eleventh Amendment extends Section 382 Rights Agreement expiration to noon March 26, 2026 (minor procedural).

## SEC filing metadata
- accession: 0001104659-26-033624
- form_type: 8-K
- ticker: ENZN
- cik: 0000727510
- company_name: Viskase Holdings, Inc.
- filed_at: 2026-03-24T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 3.03, 5.03, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/727510/000110465926033624/0001104659-26-033624-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/727510/000110465926033624/tm267492d15_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-033624
- JSON: https://secwatch.observer/filing/0001104659-26-033624.json
- Plain text: https://secwatch.observer/filing/0001104659-26-033624.txt

## Source-grounded claims
- claim_id: 2b28bec71262e566baba5c2c1bf563bd11ba2442
  claim: Viskase Holdings, Inc.: Effected a 1-for-100 reverse stock split by filing Certificate of Amendment to the Amended and Restated Certificate of Incorporation, effective March 24, 2026 at 4:30 p.m. Eastern Time (effective 2026-03-24).
  evidence_excerpt: On March 24, 2026, the Company announced that the 1-for-100 reverse stock split (the “ Reverse Stock Split ”), which was previously approved by the Company’s stockholders, will become effective as of 4:30 p.m., Eastern Time, on March 24, 2026 (“ Effective Time ”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/727510/000110465926033624/0001104659-26-033624-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.