ION GEOPHYSICAL CORP reports

Company location: Houston, TX
Fiscal year end: 31 December

ION GEOPHYSICAL CORP has filed 1,582 SEC EDGAR filings since 14 Feb 1994

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SEC filing history

Showing 726-750 of 884 matching filings.

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30

25-NSE File 001-12691

25-NSE filing

Filing date: 03 Feb 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-41602

SC 13G/A filing

Filing date: 25 Jan 2012
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

FORM 8-K

Filing date: 03 Jan 2012
Reporting date: 01 Jan 2012
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

FORM 8-K

Filing date: 07 Dec 2011
Reporting date: 05 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 04 Mar 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 12 Apr 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

3/A

FORM 3/A SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 16 Dec 2010
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 05 Dec 2011
Reporting date: 01 Dec 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

3

FORM 3 SUBMISSION

Filing date: 02 Dec 2011
Reporting date: 28 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

FORM 8-K

Filing date: 01 Dec 2011
Reporting date: 28 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

FORM 8-K

Filing date: 14 Nov 2011
Reporting date: 14 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-12691

FORM 10-Q

Filing date: 03 Nov 2011
Reporting date: 30 Sep 2011
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-12691

FORM 8-K

Filing date: 02 Nov 2011
Reporting date: 02 Nov 2011
SEC evidence: Open document Open filing
Next action: Verify source filing

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