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 376-400 of 588 matching filings.

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25

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16

4

OWNERSHIP DOCUMENT

Filing date: 16 Mar 2012
Reporting date: 15 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K File 000-12957

10-K filing

Filing date: 12 Mar 2012
Reporting date: 31 Dec 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 000-12957

8-K filing

Filing date: 12 Mar 2012
Reporting date: 12 Mar 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4

Filing date: 29 Feb 2012
Reporting date: 27 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

3

FORM 3

Filing date: 29 Feb 2012
Reporting date: 27 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-12957

8-K filing

Filing date: 28 Feb 2012
Reporting date: 27 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

3/A

FORM 3/A

Filing date: 28 Feb 2012
Reporting date: 17 Feb 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13D/A File 005-35587

SC 13D/A filing

Filing date: 28 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35587

ENZON PHARMACEUTICALS SC 13GA 12-31-2011

Filing date: 14 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35587

ENZON PHARMACEUTICALS, INC.

Filing date: 14 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 000-12957

8-K filing

Filing date: 13 Feb 2012
Reporting date: 10 Feb 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35587

ENZN13GAMEND3

Filing date: 10 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35587

SC 13G/A filing

Filing date: 09 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-35587

SC 13G/A filing

Filing date: 06 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 19 Jan 2012
Reporting date: 17 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 05 Jan 2012
Reporting date: 03 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 05 Jan 2012
Reporting date: 03 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 05 Jan 2012
Reporting date: 03 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 05 Jan 2012
Reporting date: 03 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 05 Jan 2012
Reporting date: 03 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

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