0001437749-22-018148.txt : 20220729 0001437749-22-018148.hdr.sgml : 20220729 20220729164251 ACCESSION NUMBER: 0001437749-22-018148 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20220727 FILED AS OF DATE: 20220729 DATE AS OF CHANGE: 20220729 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: SCHWAUSCH SCOTT CENTRAL INDEX KEY: 0001577175 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-12691 FILM NUMBER: 221121451 MAIL ADDRESS: STREET 1: 4203 YOAKUM BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77006 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: 4203 YOAKUM BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77006 BUSINESS PHONE: 2819333339 MAIL ADDRESS: STREET 1: 4203 YOAKUM BLVD STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77006 FORMER COMPANY: FORMER CONFORMED NAME: INPUT OUTPUT INC DATE OF NAME CHANGE: 19930328 4 1 rdgdoc.xml FORM 4 X0306 4 2022-07-27 1 0000866609 ION GEOPHYSICAL CORP IO 0001577175 SCHWAUSCH SCOTT 4203 YOAKUM BLVD. SUITE 100 HOUSTON TX 77006 1 VP, Finance & Corp Controller Common Stock 2022-07-27 4 F 0 3954 0.02 D 24898 D These shares were not sold, but were withheld by ION Geophysical Corporation upon the vesting of restricted stock shares to satisfy tax withholding obligations. /s/ Rebecca F. Sacco, attorney-in-fact 2022-07-29