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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001037389-21-000234
Filing Date
2021-02-11
Accepted
2021-02-11 09:44:35
Documents
1

Document Format Files

Seq Description Document Type Size
1 io-13g_20201231.txt SC 13G/A 11764
  Complete submission text file 0001037389-21-000234.txt   13436
Mailing Address 2105 CITYWEST BLVD SUITE 100 HOUSTON TX 770422855
Business Address 2105 CITYWEST BLVD SUITE 100 HOUSTON TX 770422855 2819333339
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.: 21617208
SIC: 1382 Oil & Gas Field Exploration Services

Mailing Address 800 THIRD AVE NEW YORK NY 10022
Business Address 800 THIRD AVE NEW YORK NY 10022 2124866780
RENAISSANCE TECHNOLOGIES LLC (Filed by) CIK: 0001037389 (see all company filings)

IRS No.: 260385758 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A