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 626-650 of 884 matching filings.

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26

4

FORM 4 SUBMISSION

Filing date: 15 Aug 2013
Reporting date: 13 Aug 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-190474

S-8

Filing date: 08 Aug 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-12691

10-Q

Filing date: 08 Aug 2013
Reporting date: 30 Jun 2013
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 08 Aug 2013
Reporting date: 07 Aug 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 02 Aug 2013
Reporting date: 01 Aug 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 15 Jul 2013
Reporting date: 15 Jul 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 20 Jun 2013
Reporting date: 19 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 17 Jun 2013
Reporting date: 13 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4/A

FORM 4/A SUBMISSION

Filing date: 17 Jun 2013
Reporting date: 12 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 12 Jun 2013
Reporting date: 10 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-41602

ION GEOPHYSICAL CORPORATION

Filing date: 10 Jun 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 06 Jun 2013
Reporting date: 05 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Jun 2013
Reporting date: 01 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Jun 2013
Reporting date: 01 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

3

FORM 3 SUBMISSION

Filing date: 04 Jun 2013
Reporting date: 29 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Jun 2013
Reporting date: 01 Jun 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 28 May 2013
Reporting date: 22 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

3

FORM 3 SUBMISSION

Filing date: 21 May 2013
Reporting date: 14 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 15 May 2013
Reporting date: 15 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 14 May 2013
Reporting date: 10 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A

Filing date: 14 May 2013
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES

Filing date: 13 May 2013
Reporting date: 08 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 07 May 2013
Reporting date: 20 Feb 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES

Filing date: 01 May 2013
Reporting date: 01 May 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 01 May 2013
Reporting date: 30 Apr 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

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