0001209191-21-017193.txt : 20210303 0001209191-21-017193.hdr.sgml : 20210303 20210303180913 ACCESSION NUMBER: 0001209191-21-017193 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210301 FILED AS OF DATE: 20210303 DATE AS OF CHANGE: 20210303 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Zhang ShaoHua CENTRAL INDEX KEY: 0001847884 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 21711064 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD., SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77042 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ION GEOPHYSICAL CORP CENTRAL INDEX KEY: 0000866609 STANDARD INDUSTRIAL CLASSIFICATION: OIL AND GAS FIELD EXPLORATION SERVICES [1382] IRS NUMBER: 222286646 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 BUSINESS PHONE: 2819333339 MAIL ADDRESS: STREET 1: 2105 CITYWEST BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 770422855 FORMER COMPANY: FORMER CONFORMED NAME: INPUT OUTPUT INC DATE OF NAME CHANGE: 19930328 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2021-03-01 0 0000866609 ION GEOPHYSICAL CORP IO 0001847884 Zhang ShaoHua 2105 CITYWEST BLVD., SUITE 100 HOUSTON TX 77042 1 0 0 0 Common Stock 2021-03-01 4 A 0 533 0.00 A 533 D Common Stock 2021-03-01 4 F 0 160 3.04 D 373 D Common Stock 2021-03-01 4 A 0 2500 0.00 A 2873 D Issued pursuant to the ION Geophysical Corporation Fourth Amended and Restated 2013 Long Term Incentive Plan ("2013 LTIP"). These shares were withheld upon the vesting of restricted stock shares to pay tax withholding obligations. Restricted stock award issued pursuant to the 2013 LTIP. Award will vest 100% on March 1, 2022. /s/ Rebecca F. Sacco, attorney-in-fact 2021-03-03