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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000215457-15-001150
Filing Date
2015-12-10
Accepted
2015-12-10 11:01:25
Documents
1

Document Format Files

Seq Description Document Type Size
1 ion.geophysical.corp.txt SC 13G/A 10367
  Complete submission text file 0000215457-15-001150.txt   12217
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.: 151280135
SIC: 1382 Oil & Gas Field Exploration Services

Mailing Address 55 EAST 52ND STREET NEW YORK NY 10055
Business Address 55 EAST 52ND STREET NEW YORK NY 10055 212-810-5300
BlackRock Inc. (Filed by) CIK: 0001364742 (see all company filings)

IRS No.: 320174431 | State of Incorp.: DE | Fiscal Year End: 0226
Type: SC 13G/A
SIC: 6211 Security Brokers, Dealers & Flotation Companies