0001140361-15-017469.txt : 20150504 0001140361-15-017469.hdr.sgml : 20150504 20150504184020 ACCESSION NUMBER: 0001140361-15-017469 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20150501 FILED AS OF DATE: 20150504 DATE AS OF CHANGE: 20150504 ISSUER: 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 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 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CARLTON DONALD M CENTRAL INDEX KEY: 0001092457 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-25426 FILM NUMBER: 15829888 MAIL ADDRESS: STREET 1: AMERICAN ELECTRIC POWER STREET 2: 1 RIVERSIDE PLAZA, 29TH FLOOR CITY: COLUMBUS STATE: OH ZIP: 43215 4 1 doc1.xml FORM 4 X0306 4 2015-05-01 0 0000935494 NATIONAL INSTRUMENTS CORP /DE/ NATI 0001092457 CARLTON DONALD M C/O NATIONAL INSTRUMENTS CORPORATION 11500 NORTH MOPAC, BLDG B AUSTIN TX 78759 1 0 0 0 Common Stock 2015-05-01 4 M 0 4370 A 48460 D Restricted Stock Units 2015-05-01 4 M 0 1493 0 D 2027-05-01 Common Stock 1493 0 D Restricted Stock Units 2015-05-01 4 M 0 1326 0 D 2028-05-01 Common Stock 2652 1326 D Restricted Stock Units 2015-05-01 4 M 0 1551 0 D 2029-05-01 Common Stock 4653 3102 D Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The restricted stock units vest in three equal annual installments on the anniversary of the vesting commencement date, May 1, 2012. The restricted stock units vest in three equal annual installments on the anniversary of the vesting commencement date, May 1, 2013. The restricted stock units vest in three equal annual installments on the anniversary of the vesting commencement date, May 1, 2014. David G. Hugley as attorney-in-fact for Donald M. Carlton 2015-05-04