Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000315066-12-002719
Filing Date
2012-02-14
Accepted
2012-02-14 12:17:40
Documents
1

Document Format Files

Seq Description Document Type Size
1 filing.txt SC 13G/A 7640
  Complete submission text file 0000315066-12-002719.txt   9342
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)

EIN.: 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)

EIN.: 222286646 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-41602 | Film No.: 12605838
SIC: 1382 Oil & Gas Field Exploration Services