Viskase Holdings, Inc. reports

Company location: Lombard, IL
Fiscal year end: 31 December

Viskase Holdings, Inc. has filed 1,513 SEC EDGAR filings since 03 Mar 1995

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SEC filing history

Showing 1-25 of 588 matching filings.

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1

8-A12G File 000-12957

8-A12G

Filing date: 05 May 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-12957

FORM 8-K

Filing date: 05 May 2026
Reporting date: 30 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-Q File 000-12957

10-Q

Filing date: 04 May 2026
Reporting date: 31 Mar 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 01 May 2026
Reporting date: 30 Apr 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K/A File 000-12957

FORM 8-K/A

Filing date: 01 May 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-12957

FORM 8-K

Filing date: 01 May 2026
Reporting date: 29 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

10-K/A File 000-12957

10-K/A

Filing date: 29 Apr 2026
Reporting date: 31 Dec 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-12957

FORM 8-K

Filing date: 21 Apr 2026
Reporting date: 16 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-12957

FORM 8-K

Filing date: 16 Apr 2026
Reporting date: 14 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-12957

FORM 8-K

Filing date: 15 Apr 2026
Reporting date: 10 Apr 2026
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filing date: 27 Mar 2026
Reporting date: 25 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

SCHEDULE 13D/A File 005-35587

SCHEDULE 13D/A filing

Filing date: 27 Mar 2026
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 26 Mar 2026
Reporting date: 26 Mar 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

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