Viskase Holdings, Inc. SEC filings VISK
Viskase Holdings, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Nov 17, 2004. Its latest annual report, Form 10-K, was filed on Mar 2, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 3, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on May 5, 2026 (material agreement, change to shareholder rights, bylaw or fiscal year change, regulation fd disclosure). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 424B3 | Prospectus | Mar 3, 2026 | — |
| 424B3 | Prospectus | Jan 30, 2026 | — |
| S-4/A | Filing | Jan 30, 2026 | — |
| S-4 | Registration for a merger or exchange | Jan 28, 2026 | — |
| 424B3 | Prospectus | Nov 24, 2020 | — |
| S-1 | Registration statement | Nov 12, 2020 | — |
| 424B3 | Prospectus | Sep 23, 2020 | — |
| S-1/A | Amended registration statement | Sep 15, 2020 | — |
| S-1 | Registration statement | Sep 1, 2020 | — |
| S-8 | Employee stock plan registration | May 10, 2011 | — |
| 424B7 | Prospectus supplement no. 2 | Jun 29, 2007 | — |
| 424B7 | Prospectus supplement no. 2 | Mar 30, 2007 | — |
| S-8 | Employee stock plan registration | Jan 29, 2007 | — |
| 424B7 | Filing | Jan 8, 2007 | — |
| 424B7 | Filing | Nov 9, 2006 | — |
| S-3/A | Form s-3/a | Nov 3, 2006 | — |
| S-3 | Shelf registration | Oct 2, 2006 | — |
| S-8 | Employee stock plan registration | May 25, 2006 | — |
| S-8 | Employee stock plan registration | Mar 16, 2006 | — |
| S-8 | Employee stock plan registration | Dec 20, 2004 | — |
Showing 20 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Biological Products, (No Diagnostic Substances) (SIC 2836)
- Listed as
- VISK (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Lombard, IL
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 727510
- Former names
- ENZON PHARMACEUTICALS, INC. (until Mar 25, 2026); ENZON PHARMACEUTICALS INC (until Feb 23, 2016); ENZON PHARMACEUTICALS INC (until Mar 22, 2006); ENZON PHARMACEUTICAL INC (until Dec 10, 2002); ENZON INC (until Dec 9, 2002)
Other Biological Products, (No Diagnostic Substances) companies
- Amgen Inc AMGN
- Gilead Sciences, Inc. GILD
- Moderna, Inc. MRNA
- Argenx SE ARGX
- Revolution Medicines, Inc. RVMD
- Biogen Inc. BIIB
- BioNTech SE BNTX
- Exelixis, Inc. EXEL
All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.