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 551-575 of 884 matching filings.

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25

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23

ARS File 001-12691

AUTO-GENERATED PAPER DOCUMENT

Filing date: 18 Apr 2014
Reporting date: 31 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 15 Apr 2014
Reporting date: 21 May 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 10 Apr 2014
Reporting date: 09 Apr 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

424B3 File 333-194110

424B3

Filing date: 10 Apr 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

EFFECT File 333-194110

EFFECT filing

Filing date: 09 Apr 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 07 Apr 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-4/A File 333-194110

S-4/A

Filing date: 28 Mar 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 28 Mar 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-K/A File 001-12691

FORM 10-K/A AMENDMENT NO. 1

Filing date: 28 Mar 2014
Reporting date: 31 Dec 2013
SEC evidence: Open document Open filing
Next action: Verify source filing

UPLOAD

UPLOAD filing

Filing date: 21 Mar 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 20 Mar 2014
Reporting date: 19 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-12691

8-K

Filing date: 13 Mar 2014
Reporting date: 13 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

SC 13G/A File 005-41602

SC 13G/A

Filing date: 11 Mar 2014
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: 10 Mar 2014
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

4

FORM 4 SUBMISSION

Filing date: 04 Mar 2014
Reporting date: 01 Mar 2014
SEC evidence: Open document Open filing
Next action: Verify source filing

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