ION GEOPHYSICAL CORP reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Houston, TX
SEC filing record 1 source field available
Fiscal year end
31 December
ION GEOPHYSICAL CORP has filed 1,582 SEC EDGAR filings since 14 Feb 1994

SEC filing history

Showing 276-300 of 884 matching filings.

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25
Current page
12
8-K File 001-12691

8-K ZHENG

Filing date
13 Apr 2018
Reporting date
13 Apr 2018
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DEF 14A File 001-12691

DEF 14A

Filing date
13 Apr 2018
Reporting date
16 May 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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4

FORM 4 SUBMISSION

Filing date
02 Mar 2018
Reporting date
01 Mar 2018
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8-K File 001-12691

8-K

Filing date
02 Mar 2018
Reporting date
02 Mar 2018
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SC 13G File 005-41602

ION GEOPHYSICAL CORP

Filing date
22 Feb 2018
Reporting date
Not listed
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424B5 File 333-213769

424B5

Filing date
20 Feb 2018
Reporting date
Not listed
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8-K File 001-12691

8-K

Filing date
16 Feb 2018
Reporting date
15 Feb 2018
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424B5 File 333-213769

424B5

Filing date
15 Feb 2018
Reporting date
Not listed
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S-3MEF File 333-223053

S-3MEF

Filing date
15 Feb 2018
Reporting date
Not listed
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SC 13G/A File 005-41602

SEC SCHEDULE 13G

Filing date
12 Feb 2018
Reporting date
Not listed
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10-K/A File 001-12691

10-K/A

Filing date
12 Feb 2018
Reporting date
31 Dec 2017
SEC evidence
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