<SEC-DOCUMENT>0001000229-16-000175-index.html : 20160401 <SEC-HEADER>0001000229-16-000175.hdr.sgml : 20160401 <ACCEPTANCE-DATETIME>20160401160605 ACCESSION NUMBER: 0001000229-16-000175 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20160331 FILED AS OF DATE: 20160401 DATE AS OF CHANGE: 20160401 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: 1017 BZ AMSTERDAM STREET 2: HERENGRACHT 424 CITY: THE NETHERLANDS STATE: P7 BUSINESS PHONE: 3124203191 MAIL ADDRESS: STREET 1: 6316 WINDFERN CITY: HOUSTON STATE: TX ZIP: 77040 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: van Kempen Margaret Ann CENTRAL INDEX KEY: 0001550876 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-14273 FILM NUMBER: 161547142 MAIL ADDRESS: STREET 1: ATJEHWEG 16 CITY: NOORDWIJK STATE: P7 ZIP: 2202 AP </SEC-HEADER> <DOCUMENT> <TYPE>4 <SEQUENCE>1 <FILENAME>wf-form4_145954115337065.xml <DESCRIPTION>FORM 4 <TEXT> Document 1 - file: wf-form4_145954115337065.html
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