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
8-K Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure
 May 5, 2026 Apr 30, 2026
8-K/A Amended current report May 1, 2026 Mar 26, 2026
8-K Current report
Officer or director change
 May 1, 2026 Apr 29, 2026
8-K Current report
Material agreement, New debt
 Apr 21, 2026 Apr 16, 2026
8-K Current report
Auditor change
 Apr 16, 2026 Apr 14, 2026
8-K Current report
Officer or director change
 Apr 15, 2026 Apr 10, 2026
8-K Current report
Acquisition or sale of assets, Unregistered share sale, Change in control, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
 Mar 26, 2026 Mar 26, 2026
8-K Current report
Regulation FD disclosure
 Mar 25, 2026 Mar 25, 2026
8-K Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure
 Mar 24, 2026 Mar 20, 2026
8-K Current report
Regulation FD disclosure
 Mar 19, 2026 Mar 19, 2026
8-K Current report
Material agreement, Change to shareholder rights
 Mar 18, 2026 Mar 18, 2026
8-K Current report
Regulation FD disclosure
 Mar 16, 2026 Mar 16, 2026
8-K Current report
Material agreement, Change to shareholder rights, Regulation FD disclosure
 Mar 11, 2026 Mar 10, 2026
8-K Current report
Regulation FD disclosure
 Mar 9, 2026 Mar 9, 2026
8-K Current report
Material agreement, Change to shareholder rights, Regulation FD disclosure
 Feb 27, 2026 Feb 27, 2026
8-K Current report
Shareholder vote results
 Feb 11, 2026 Feb 11, 2026
8-K Current report
Material agreement, Change to shareholder rights
 Jan 30, 2026 Jan 30, 2026
8-K Current report
Material agreement, Change to shareholder rights
 Dec 23, 2025 Dec 23, 2025
8-K Current report
Material agreement, Regulation FD disclosure
 Oct 24, 2025 Oct 24, 2025
8-K Current report
Material agreement, Change to shareholder rights
 Sep 30, 2025 Sep 30, 2025
8-K Current report
Material agreement, Regulation FD disclosure
 Jun 23, 2025 Jun 20, 2025
8-K Current report
Material agreement, Change to shareholder rights
 Apr 1, 2025 Mar 31, 2025
8-K Current report
Officer or director change, Other events
 Jan 10, 2025 Jan 7, 2025
8-K Current report
Other events
 Dec 27, 2024 Dec 18, 2024
8-K Current report
Shareholder vote results
 Oct 1, 2024 Sep 26, 2024
8-K/A Amended current report Jul 11, 2024 Jul 2, 2024
8-K Current report Jul 2, 2024 Jul 2, 2024
8-K Current report
Other events
 Jun 14, 2024 Jun 10, 2024
8-K Current report
Material agreement, Change to shareholder rights
 May 22, 2024 May 16, 2024
8-K Current report
Other events
 Jan 5, 2024 Dec 31, 2023
8-K Current report
Shareholder vote results
 Jun 14, 2023 Jun 8, 2023
8-K Current report
Other events
 Jan 6, 2023 Dec 31, 2022
8-K Current report
Shareholder vote results
 Jun 15, 2022 Jun 9, 2022
8-K Current report
Material agreement, Change to shareholder rights, Shareholder vote results
 Jun 8, 2021 Jun 2, 2021
8-K Current report
Officer or director change
 Jan 4, 2021 Dec 30, 2020
8-K Current report
Shareholder vote results
 Dec 21, 2020 Dec 18, 2020
8-K Current report
Unregistered share sale, Other events
 Oct 14, 2020 Oct 9, 2020
8-K Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
 Sep 23, 2020 Sep 21, 2020
8-K Current report
Other events
 Sep 15, 2020 Sep 15, 2020
8-K Current report
Other events
 Sep 2, 2020 Sep 2, 2020
8-K Current report
Material agreement
 Sep 1, 2020 Sep 1, 2020
8-K Current report
Other events
 Aug 31, 2020 Aug 31, 2020
8-K Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Other events
 Aug 14, 2020 Aug 14, 2020
8-K Current report
Officer or director change
 Aug 7, 2020 Aug 4, 2020
8-K Current report
Shareholder vote results, Other events
 Aug 22, 2019 Aug 22, 2019
8-K Current report
Other events
 Feb 1, 2019 Jan 30, 2019
8-K Current report
Shareholder vote results
 Aug 13, 2018 Aug 9, 2018
8-K Current report
Other events
 Aug 10, 2017 Aug 10, 2017
8-K Current report
Shareholder vote results, Other events
 Jun 30, 2017 Jun 26, 2017
8-K Current report
Other events
 Dec 8, 2016 Dec 8, 2016
8-K Current report
Other events
 Nov 14, 2016 Nov 14, 2016
8-K Current report
Other events
 Oct 26, 2016 Oct 25, 2016
8-K Current report
Other events
 Aug 9, 2016 Aug 9, 2016
8-K Current report
Shareholder vote results, Other events
 Jul 5, 2016 Jun 29, 2016
8-K Current report
Listing notice
 May 16, 2016 May 11, 2016
8-K Current report
Officer or director change, Other events
 Mar 21, 2016 Mar 18, 2016
8-K Current report
Other events
 Feb 23, 2016 Feb 22, 2016
8-K Current report
Material agreement, Other events
 Feb 9, 2016 Feb 2, 2016
8-K Current report
Other events
 Dec 7, 2015 Dec 4, 2015
8-K Current report
Other events
 Dec 3, 2015 Dec 2, 2015
8-K Current report
Listing notice
 Nov 12, 2015 Nov 11, 2015
8-K Current report
Material agreement
 Sep 15, 2015 Sep 11, 2015
8-K Current report
Other events
 Jul 8, 2015 Jul 6, 2015
8-K Current report
Shareholder vote results, Other events
 Jul 2, 2015 Jun 30, 2015
8-K Current report
Other events
 Dec 10, 2014 Dec 8, 2014
8-K Current report
Other events
 Dec 5, 2014 Dec 4, 2014
8-K Current report
Other events
 Jul 16, 2014 Jun 25, 2014
8-K Current report
Listing notice
 Jun 12, 2014 Jun 10, 2014
8-K Current report
Shareholder vote results, Other events
 May 30, 2014 May 28, 2014
8-K Current report
Other events
 May 19, 2014 May 19, 2014
8-K Current report
Listing notice
 May 9, 2014 May 8, 2014
8-K Current report
Material agreement, Change to shareholder rights, Bylaw or fiscal year change, Other events
 May 1, 2014 Apr 30, 2014
8-K Current report
Listing notice
 Mar 25, 2014 Mar 19, 2014
8-K Current report
Officer or director change, Other events
 Dec 16, 2013 Dec 13, 2013
8-K Current report
Other events
 Dec 5, 2013 Dec 5, 2013
8-K Current report
Shareholder vote results, Other events
 Nov 21, 2013 Nov 13, 2013
8-K Current report
Officer or director change, Other events
 Oct 22, 2013 Oct 21, 2013
8-K Current report
Other events
 Oct 15, 2013 Oct 14, 2013
8-K Current report
Officer or director change
 Oct 9, 2013 Oct 7, 2013
8-K Current report
Material agreement, Officer or director change, Other events
 Oct 1, 2013 Sep 25, 2013
8-K Current report
Auditor change
 Aug 12, 2013 Aug 7, 2013
8-K Current report
Officer or director change
 Aug 9, 2013 Aug 6, 2013
8-K Current report
Officer or director change
 Jul 25, 2013 Jul 22, 2013
8-K Current report
Other events
 May 6, 2013 Apr 30, 2013
8-K Current report
Other events
 Apr 24, 2013 Apr 23, 2013
8-K Current report
Exit or restructuring costs
 Mar 26, 2013 Mar 21, 2013
8-K Current report
Results of operations
 Mar 18, 2013 Mar 18, 2013
8-K Current report
Officer or director change
 Feb 28, 2013 Feb 28, 2013
8-K Current report
Other events
 Feb 21, 2013 Feb 21, 2013
8-K Current report
Officer or director change, Bylaw or fiscal year change
 Feb 12, 2013 Feb 6, 2013
8-K Current report
Exit or restructuring costs, Other events
 Dec 20, 2012 Dec 14, 2012
8-K Current report
Other events
 Nov 30, 2012 Nov 29, 2012
8-K Current report
Results of operations
 Oct 31, 2012 Oct 31, 2012
8-K Current report
Results of operations
 Aug 1, 2012 Aug 1, 2012
8-K/A Amended current report
Officer or director change
 Jun 26, 2012 May 16, 2012
8-K Current report
Officer or director change, Shareholder vote results
 May 22, 2012 May 16, 2012
8-K Current report
Other events
 May 7, 2012 May 7, 2012
8-K Current report
Results of operations
 May 2, 2012 May 2, 2012
8-K Current report
Results of operations
 Mar 12, 2012 Mar 12, 2012
8-K Current report
Officer or director change
 Feb 28, 2012 Feb 27, 2012
8-K Current report
Other events
 Feb 13, 2012 Feb 10, 2012
8-K Current report
Other events
 Dec 9, 2011 Dec 8, 2011
8-K Current report
Officer or director change
 Nov 30, 2011 Nov 23, 2011
8-K/A Amended current report
Officer or director change
 Nov 23, 2011 Oct 13, 2011
8-K Current report
Results of operations
 Nov 3, 2011 Nov 3, 2011
8-K Current report
Officer or director change, Other events
 Oct 17, 2011 Oct 13, 2011
8-K Current report
Exit or restructuring costs
 Sep 22, 2011 Sep 22, 2011
8-K Current report
Officer or director change
 Sep 20, 2011 Sep 15, 2011
8-K Current report
Officer or director change
 Aug 17, 2011 Aug 11, 2011
8-K/A Amended current report
Shareholder vote results
 Aug 8, 2011 May 10, 2011
8-K Current report
Results of operations
 Aug 4, 2011 Aug 4, 2011
8-K Current report
Other events
 Jun 20, 2011 Jun 9, 2011
8-K Current report
Officer or director change, Other events
 May 31, 2011 May 26, 2011
8-K Current report
Other events
 May 19, 2011 May 19, 2011
8-K Current report
Officer or director change, Shareholder vote results
 May 16, 2011 May 10, 2011
8-K Current report
Results of operations
 May 6, 2011 May 6, 2011
8-K Current report
Officer or director change
 Mar 24, 2011 Mar 21, 2011
8-K Current report
Officer or director change, Bylaw or fiscal year change
 Mar 17, 2011 Mar 11, 2011
8-K Current report
Results of operations
 Feb 17, 2011 Feb 17, 2011
8-K Current report
Other events
 Jan 25, 2011 Jan 19, 2011
8-K Current report
Other events
 Dec 21, 2010 Dec 21, 2010
8-K Current report
Exit or restructuring costs
 Dec 7, 2010 Dec 3, 2010
8-K Current report Nov 12, 2010 Nov 10, 2010
8-K Current report
Results of operations
 Nov 2, 2010 Nov 2, 2010
8-K Current report
Results of operations
 Aug 3, 2010 Aug 3, 2010
8-K Current report
Officer or director change, Bylaw or fiscal year change, Shareholder vote results
 Jul 15, 2010 Jul 13, 2010
8-K Current report
Officer or director change
 Jul 8, 2010 Jul 1, 2010
8-K Current report
Officer or director change
 Jun 18, 2010 Jun 17, 2010
8-K Current report
Results of operations
 May 10, 2010 May 10, 2010
8-K Current report
Other events
 May 7, 2010 May 7, 2010
8-K Current report
Officer or director change, Other events
 Apr 22, 2010 Apr 19, 2010
8-K Current report
Other events
 Mar 8, 2010 Mar 8, 2010
8-K Current report
Officer or director change
 Feb 23, 2010 Feb 19, 2010
8-K Current report
Results of operations
 Feb 17, 2010 Feb 17, 2010
8-K Current report
Other events
 Feb 5, 2010 Feb 5, 2010
8-K Current report
Acquisition or sale of assets, Other events
 Jan 29, 2010 Jan 29, 2010
8-K Current report
Bylaw or fiscal year change, Other events
 Jan 21, 2010 Jan 19, 2010
8-K Current report
Material agreement
 Nov 12, 2009 Nov 9, 2009
8-K Current report
Other events
 Nov 9, 2009 Nov 9, 2009
8-K Current report
Results of operations
 Nov 3, 2009 Nov 3, 2009
8-K Current report
Officer or director change
 Aug 4, 2009 Aug 3, 2009
8-K Current report
Results of operations
 Aug 4, 2009 Aug 4, 2009
8-K Current report
Material agreement, Change to shareholder rights
 Jul 24, 2009 Jul 23, 2009
8-K Current report
Officer or director change
 Jul 24, 2009 Jul 23, 2009
8-K Current report
Results of operations
 May 7, 2009 May 7, 2009
8-K Current report
Results of operations
 Feb 19, 2009 Feb 19, 2009
8-K Current report
Bylaw or fiscal year change
 Jan 21, 2009 Jan 18, 2009
8-K Current report
Other events
 Dec 4, 2008 Dec 3, 2008
8-K Current report
Results of operations
 Nov 5, 2008 Nov 5, 2008
8-K Current report
Change to shareholder rights
 Aug 25, 2008 Aug 25, 2008
8-K Current report
Other events
 Aug 18, 2008 Aug 18, 2008
8-K Current report
Other events
 Aug 13, 2008 Aug 11, 2008
8-K Current report
Results of operations
 Aug 6, 2008 Aug 6, 2008
8-K Current report
Officer or director change
 Jun 20, 2008 Jun 18, 2008
8-K Current report
Officer or director change
 May 28, 2008 May 22, 2008
8-K Current report
Results of operations, Other events
 May 7, 2008 May 7, 2008
8-K Current report
Results of operations, Other events
 Feb 14, 2008 Feb 14, 2008
8-K Current report
Other events
 Feb 12, 2008 Feb 11, 2008
8-K Current report
Material agreement, Change to shareholder rights
 Jan 8, 2008 Jan 7, 2008
8-K Current report
Bylaw or fiscal year change
 Nov 26, 2007 Nov 21, 2007
8-K Current report
Officer or director change
 Nov 13, 2007 Nov 6, 2007
8-K Current report
Results of operations
 Oct 30, 2007 Oct 30, 2007
8-K Current report
Material agreement, Acquisition or sale of assets
 Aug 20, 2007 Aug 19, 2007
8-K Current report
Other events
 Aug 16, 2007 Aug 16, 2007
8-K Current report
Results of operations
 Aug 2, 2007 Aug 2, 2007
8-K Current report
Results of operations
 May 2, 2007 May 2, 2007
8-K Current report
Other events
 Apr 23, 2007 Apr 20, 2007
8-K Current report
Results of operations
 Feb 13, 2007 Feb 13, 2007
8-K Current report
Exit or restructuring costs
 Feb 5, 2007 Feb 2, 2007
8-K Current report
Other events
 Jan 4, 2007 Jan 3, 2007
8-K Current report
Results of operations
 Nov 2, 2006 Nov 2, 2006
8-K Current report
Results of operations
 Aug 1, 2006 Aug 1, 2006
8-K Current report
Material agreement, New debt, Unregistered share sale
 Jun 7, 2006 Jun 5, 2006
8-K Current report
Material agreement, New debt
 May 25, 2006 May 23, 2006
8-K Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Other events
 May 19, 2006 May 17, 2006
8-K Current report
Other events
 May 16, 2006 May 16, 2006
8-K Current report
Results of operations
 May 2, 2006 May 2, 2006
8-K Current report
Material agreement
 Apr 5, 2006 Apr 1, 2006
8-K Current report
Results of operations
 Feb 28, 2006 Feb 28, 2006
8-K Current report
Officer or director change
 Jan 9, 2006 Jan 3, 2006
8-K Current report
Agreement ended
 Jan 6, 2006 Jan 3, 2006
8-K Current report
Results of operations
 Nov 3, 2005 Nov 2, 2005
8-K Current report
Material agreement
 Oct 31, 2005 Oct 28, 2005
8-K Current report
Other events
 Sep 6, 2005 Sep 2, 2005
8-K Current report
Results of operations, Restatement
 Sep 1, 2005 Sep 1, 2005
8-K Current report
Results of operations, Restatement
 Aug 16, 2005 Aug 14, 2005
8-K Current report
Officer or director change
 Jun 13, 2005 Jun 10, 2005
8-K Current report
Officer or director change
 May 16, 2005 May 12, 2005
8-K Current report
Results of operations
 May 5, 2005 May 5, 2005
8-K Current report
Material agreement, Agreement ended
 Apr 27, 2005 Apr 27, 2005
8-K Current report
Exit or restructuring costs, Officer or director change
 Apr 21, 2005 Apr 21, 2005
8-K Current report Apr 13, 2005 Apr 7, 2005
8-K Current report
Agreement ended
 Mar 21, 2005 Mar 16, 2005
8-K/A Amended current report
Officer or director change
 Feb 8, 2005 Jan 4, 2005
8-K/A Amended current report
Officer or director change
 Feb 8, 2005 Nov 11, 2004
8-K/A Amended current report
Officer or director change
 Feb 8, 2005 Sep 29, 2004
8-K Current report
Officer or director change, Bylaw or fiscal year change
 Feb 8, 2005 Feb 2, 2005
8-K Current report
Other events
 Feb 4, 2005 Feb 3, 2005
8-K Current report
Results of operations
 Feb 3, 2005 Feb 3, 2005
8-K Current report
Other events
 Jan 20, 2005 Jan 19, 2005

Showing 200 filings, the most recent 200. 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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Source: SEC EDGAR filings. This is company-reported data, not investment advice.