---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-053523"
form_type: "8-K/A"
ticker: "ENZN"
cik: "0000727510"
company_name: "Viskase Holdings, Inc."
filed_at: "2026-05-01T23:59:59+00:00"
generated_at: "2026-05-15T00:26:59.076490+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Viskase posts $65.5M net loss in 2025; auditor flags going concern doubt

## Summary
- Net loss attributable to Viskase of $65.5M in 2025 vs loss of $5.4M in 2024; EPS of ($0.49).
- Net sales fell 10% to $364.4M from $403.8M; gross margin halved to $36.8M.
- Operating loss of $41.0M driven by $16.7M impairment and $7.1M restructuring charge.
- Short-term debt surged to $141.8M; auditor cites substantial doubt about going concern due to Aug 2026 credit facility maturity.
- Merger with Enzon (now Viskase Holdings) pending close in 2026; refinancing expected post-merger.

## SEC filing metadata
- accession: 0001104659-26-053523
- form_type: 8-K/A
- ticker: ENZN
- cik: 0000727510
- company_name: Viskase Holdings, Inc.
- filed_at: 2026-05-01T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/727510/000110465926053523/0001104659-26-053523-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/727510/000110465926053523/tm2612647d1_8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-053523
- JSON: https://secwatch.observer/filing/0001104659-26-053523.json
- Plain text: https://secwatch.observer/filing/0001104659-26-053523.txt

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