<SEC-DOCUMENT>0000935494-15-000023-index.html : 20150818 <SEC-HEADER>0000935494-15-000023.hdr.sgml : 20150818 <ACCEPTANCE-DATETIME>20150804142008 ACCESSION NUMBER: 0000935494-15-000023 CONFORMED SUBMISSION TYPE: S-8 PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20150804 DATE AS OF CHANGE: 20150804 EFFECTIVENESS DATE: 20150804 FILER: COMPANY DATA: COMPANY CONFORMED NAME: NATIONAL INSTRUMENTS CORP /DE/ CENTRAL INDEX KEY: 0000935494 STANDARD INDUSTRIAL CLASSIFICATION: SERVICES-PREPACKAGED SOFTWARE [7372] IRS NUMBER: 741871327 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: S-8 SEC ACT: 1933 Act SEC FILE NUMBER: 333-206067 FILM NUMBER: 151024954 BUSINESS ADDRESS: STREET 1: 11500 NORTH MOPAC EXPRESSWAY CITY: AUSTIN STATE: TX ZIP: 78759 BUSINESS PHONE: 5123389119 MAIL ADDRESS: STREET 1: 11500 NORTH MOPAC EXPRESSWAY CITY: AUSTIN STATE: TX ZIP: 78759 </SEC-HEADER> <DOCUMENT> <TYPE>S-8 <SEQUENCE>1 <FILENAME>form_s8-2015equityincentplan.htm <DESCRIPTION>FORM S-8 2015 EQUITY INCENTIVE PLAN <TEXT> Document 1 - file: form_s8-2015equityincentplan.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-5.1 <SEQUENCE>2 <FILENAME>exhibit5-1.htm <DESCRIPTION>LETTER FROM WSGR <TEXT> Document 2 - file: exhibit5-1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-23.1 <SEQUENCE>3 <FILENAME>exhibit23-1.htm <DESCRIPTION>CONSENT FROM E & Y <TEXT> Document 3 - file: exhibit23-1.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>wilsonlogo.jpg <TEXT> Document 4 - file: wilsonlogo.jpg
</DOCUMENT> </SEC-DOCUMENT>