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 |
|---|---|---|---|
| DEFA14A | Additional proxy material | Aug 8, 2024 | — |
| DEF 14A | Proxy statement | Aug 8, 2024 | Sep 26, 2024 |
| PRE 14A | Preliminary proxy statement | Jul 29, 2024 | Sep 26, 2024 |
| DEFA14A | Additional proxy material | Apr 20, 2023 | — |
| DEF 14A | Proxy statement | Apr 20, 2023 | Jun 8, 2023 |
| DEFA14A | Additional proxy material | Apr 22, 2022 | — |
| DEF 14A | Proxy statement | Apr 22, 2022 | Jun 9, 2022 |
| DEFA14A | Additional proxy material | Apr 14, 2021 | — |
| DEF 14A | Proxy statement | Apr 14, 2021 | Jun 2, 2021 |
| PRE 14A | Preliminary proxy statement | Apr 2, 2021 | Jun 2, 2021 |
| DEFA14A | Additional proxy material | Nov 3, 2020 | — |
| DEF 14A | Proxy statement | Nov 3, 2020 | Dec 18, 2020 |
| DEFA14A | Additional proxy material | Jul 12, 2019 | — |
| DEF 14A | Proxy statement | Jul 12, 2019 | Aug 22, 2019 |
| DEFA14A | Additional proxy material | Jun 29, 2018 | — |
| DEF 14A | Proxy statement | Jun 29, 2018 | Aug 9, 2018 |
| DEFA14A | Additional proxy material | May 12, 2017 | — |
| DEF 14A | Proxy statement | May 12, 2017 | Jun 28, 2017 |
| DEFA14A | Additional proxy material | May 13, 2016 | — |
| DEF 14A | Proxy statement | May 13, 2016 | Jun 29, 2016 |
| DEFA14A | Additional proxy material | Feb 9, 2016 | — |
| DEFA14A | Additional proxy material | May 15, 2015 | — |
| DEF 14A | Proxy statement | May 15, 2015 | Jun 30, 2015 |
| PRE 14A | Preliminary proxy statement | Apr 28, 2015 | Apr 28, 2015 |
| DEFA14A | Additional proxy material | May 19, 2014 | — |
| DEFA14A | Additional proxy material | Apr 16, 2014 | — |
| DEF 14A | Proxy statement | Apr 16, 2014 | May 28, 2014 |
| DEFA14A | Additional proxy material | Oct 11, 2013 | — |
| DEF 14A | Proxy statement | Oct 11, 2013 | Nov 20, 2013 |
| DEFA14A | Additional proxy material | Apr 6, 2012 | — |
| DEF 14A | Proxy statement | Apr 6, 2012 | May 16, 2012 |
| DEF 14A | Proxy statement | Apr 8, 2011 | May 10, 2011 |
| DEF 14A | Proxy statement | Jun 10, 2010 | Jul 13, 2010 |
| DEFA14A | Additional proxy material | Apr 22, 2010 | — |
| DEFA14A | Additional proxy material | Dec 22, 2009 | — |
| DEFM14A | Filing | Dec 21, 2009 | — |
| PREM14A | Filing | Nov 23, 2009 | — |
| DEFA14A | Additional proxy material | Nov 9, 2009 | — |
| DEFA14A | Additional proxy material | Jul 23, 2009 | — |
| DEFA14A | Additional proxy material | May 21, 2009 | — |
| DEFA14A | Additional proxy material | Apr 23, 2009 | — |
| DEFA14A | Additional proxy material | Apr 23, 2009 | — |
| DEF 14A | Proxy statement | Apr 13, 2009 | May 21, 2009 |
| DEFA14A | Additional proxy material | Jan 28, 2009 | — |
| DEF 14A | Proxy statement | Apr 16, 2008 | May 22, 2008 |
| DEF 14A | Proxy statement | Apr 10, 2007 | May 16, 2007 |
| DEF 14A | Proxy statement | Apr 12, 2006 | Apr 12, 2006 |
| PRE 14A | Preliminary proxy statement | Mar 22, 2006 | Dec 31, 2005 |
Showing 48 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.
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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)
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All 182 Biological Products, (No Diagnostic Substances) companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.