<SEC-DOCUMENT>0001140361-23-018011-index.html : 20230412 <SEC-HEADER>0001140361-23-018011.hdr.sgml : 20230412 <ACCEPTANCE-DATETIME>20230412163528 ACCESSION NUMBER: 0001140361-23-018011 CONFORMED SUBMISSION TYPE: DEFA14A PUBLIC DOCUMENT COUNT: 3 FILED AS OF DATE: 20230412 DATE AS OF CHANGE: 20230412 FILER: COMPANY DATA: COMPANY CONFORMED NAME: NATIONAL INSTRUMENTS CORP 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: DEFA14A SEC ACT: 1934 Act SEC FILE NUMBER: 001-41595 FILM NUMBER: 23816093 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 FORMER COMPANY: FORMER CONFORMED NAME: NATIONAL INSTRUMENTS CORP /DE/ DATE OF NAME CHANGE: 19950113 </SEC-HEADER> <DOCUMENT> <TYPE>DEFA14A <SEQUENCE>1 <FILENAME>brhc20051364_defa14a.htm <DESCRIPTION>DEFA14A <TEXT> Document 1 - file: brhc20051364_defa14a.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-2.1 <SEQUENCE>2 <FILENAME>brhc20051364_ex2-1.htm <DESCRIPTION>EXHIBIT 2.1 <TEXT> Document 2 - file: brhc20051364_ex2-1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-4.1 <SEQUENCE>3 <FILENAME>brhc20051364_ex4-1.htm <DESCRIPTION>EXHIBIT 4.1 <TEXT> Document 3 - file: brhc20051364_ex4-1.htm
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