<SEC-DOCUMENT>0001000229-19-000002-index.html : 20190103 <SEC-HEADER>0001000229-19-000002.hdr.sgml : 20190103 <ACCEPTANCE-DATETIME>20190103160848 ACCESSION NUMBER: 0001000229-19-000002 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20181231 FILED AS OF DATE: 20190103 DATE AS OF CHANGE: 20190103 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Elvig Mark F CENTRAL INDEX KEY: 0001435153 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-14273 FILM NUMBER: 19505451 MAIL ADDRESS: STREET 1: 6316 WINDFERN CITY: HOUSTON STATE: TX ZIP: 77040 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CORE LABORATORIES N V CENTRAL INDEX KEY: 0001000229 STANDARD INDUSTRIAL CLASSIFICATION: OIL, GAS FIELD SERVICES, NBC [1389] IRS NUMBER: 000000000 STATE OF INCORPORATION: P7 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: STRAWINSKYLAAN 913 STREET 2: TOWER A, LEVEL 9 CITY: 1077 XX AMSTERDAM STATE: P7 ZIP: 1077 XX BUSINESS PHONE: 3124203191 MAIL ADDRESS: STREET 1: 6316 WINDFERN CITY: HOUSTON STATE: TX ZIP: 77040 </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>wf-form4_154654971021908.xml <DESCRIPTION>FORM 4 <TEXT> Document 1 - file: wf-form4_154654971021908.html
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