0001209191-18-044646.txt : 20180801 0001209191-18-044646.hdr.sgml : 20180801 20180801084336 ACCESSION NUMBER: 0001209191-18-044646 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20180731 FILED AS OF DATE: 20180801 DATE AS OF CHANGE: 20180801 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: ROLAND DAVID L CENTRAL INDEX KEY: 0001286832 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-13926 FILM NUMBER: 18983173 MAIL ADDRESS: STREET 1: ION GEOPHYSICAL CORPORATION STREET 2: 2101 CITYWEST, SUITE 400 CITY: HOUSTON STATE: TX ZIP: 77042-2839 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: DIAMOND OFFSHORE DRILLING, INC. CENTRAL INDEX KEY: 0000949039 STANDARD INDUSTRIAL CLASSIFICATION: DRILLING OIL & GAS WELLS [1381] IRS NUMBER: 760321760 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 15415 KATY FREEWAY STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77094 BUSINESS PHONE: 281-492-5300 MAIL ADDRESS: STREET 1: 15415 KATY FREEWAY STREET 2: SUITE 100 CITY: HOUSTON STATE: TX ZIP: 77094 FORMER COMPANY: FORMER CONFORMED NAME: DIAMOND OFFSHORE DRILLING INC DATE OF NAME CHANGE: 19950807 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2018-07-31 0 0000949039 DIAMOND OFFSHORE DRILLING, INC. DO 0001286832 ROLAND DAVID L 15415 KATY FREEWAY SUITE 100 HOUSTON TX 77094 0 1 0 0 SVP, General Counsel and Sec Common Stock 2018-07-31 4 S 0 1744 19.7298 D 9194 D Common Stock 810.293 I By 401(k) Plan Based on a plan statement as of July 30, 2018. /s/ Terence W. Waldorf Attorney-in-Fact for David L. Roland 2018-08-01