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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000315066-12-003423
Filing Date
2012-04-10
Accepted
2012-04-10 08:44:10
Documents
1

Document Format Files

Seq Description Document Type Size
1 filing.txt SC 13G/A 7619
  Complete submission text file 0000315066-12-003423.txt   9321
Mailing Address 82 DEVONSHIRE STREET BOSTON MA 02109
Business Address 82 DEVONSHIRE ST BOSTON MA 02109 6175706339
FMR LLC (Filed by) CIK: 0000315066 (see all company filings)

IRS No.: 061209781 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address 2105 CITYWEST BLVD SUITE 400 HOUSTON TX 770422839
Business Address 2105 CITYWEST BLVD SUITE 400 HOUSTON TX 770422839 281.933.3339
ION GEOPHYSICAL CORP (Subject) CIK: 0000866609 (see all company filings)

IRS No.: 222286646 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-41602 | Film No.: 12750794
SIC: 1382 Oil & Gas Field Exploration Services