ION GEOPHYSICAL CORP SEC filing history

884 loaded recent SEC filings. No local filings are indexed for this CIK yet. This fallback shows up to 1,000 recent submissions, not the complete SEC archive.

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SEC filing history

Showing 26–50 of 118 matching filings.

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UPLOAD

UPLOAD filing

Filing date: 05 Feb 2021
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

UPLOAD

UPLOAD filing

Filing date: 05 Feb 2021
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-4 File 333-252591

S-4

Filing date: 29 Jan 2021
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-1 File 333-252590

S-1

Filing date: 29 Jan 2021
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 22 Jan 2021
Reporting date: 23 Feb 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

PRE 14A File 001-12691

PRE 14A

Filing date: 11 Jan 2021
Reporting date: 11 Jan 2021
SEC evidence: Open document Open filing
Next action: Verify source filing

SD File 001-12691

SD

Filing date: 29 May 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A ADDITIONAL MATERIALS

Filing date: 13 May 2020
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 22 Apr 2020
Reporting date: 26 May 2020
SEC evidence: Open document Open filing
Next action: Verify source filing

EFFECT File 333-234606

EFFECT filing

Filing date: 23 Dec 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 20 Dec 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-3/A File 333-234606

S-3/A

Filing date: 19 Dec 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-3 File 333-234606

S-3

Filing date: 08 Nov 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SD File 001-12691

SD CY2018

Filing date: 31 May 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A

Filing date: 03 May 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 11 Apr 2019
Reporting date: 15 May 2019
SEC evidence: Open document Open filing
Next action: Verify source filing

424B3 File 333-213769

424B3 WARRANT EXTENSION

Filing date: 13 Feb 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

S-8 File 333-229311

S-8

Filing date: 18 Jan 2019
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A SPECMTGEXPLNOTE2

Filing date: 23 Nov 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A SPECMTGPRXYREV

Filing date: 09 Nov 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 01 Nov 2018
Reporting date: 30 Nov 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

DEFA14A File 001-12691

DEFA14A

Filing date: 01 Nov 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

SD File 001-12691

SD

Filing date: 31 May 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

DEF 14A File 001-12691

DEF 14A

Filing date: 13 Apr 2018
Reporting date: 16 May 2018
SEC evidence: Open document Open filing
Next action: Verify source filing

424B5 File 333-213769

424B5

Filing date: 20 Feb 2018
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing