0001140361-12-021057.txt : 20120420 0001140361-12-021057.hdr.sgml : 20120420 20120420171618 ACCESSION NUMBER: 0001140361-12-021057 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120419 FILED AS OF DATE: 20120420 DATE AS OF CHANGE: 20120420 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: LE DUY LOAN T CENTRAL INDEX KEY: 0001192886 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-25426 FILM NUMBER: 12771512 MAIL ADDRESS: STREET 1: C/O NATIONAL INSTRUMENTS STREET 2: 11500 MOPAC BLDG B CITY: AUSTIN STATE: TX ZIP: 78759 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 4 1 doc1.xml FORM 4 X0305 4 2012-04-19 0 0000935494 NATIONAL INSTRUMENTS CORP /DE/ NATI 0001192886 LE DUY LOAN T C/O NATIONAL INSTRUMENTS CORPORATION 11500 NORTH MOPAC, BLDG B AUSTIN TX 78759 1 0 0 0 Restricted Stock Units 2012-04-19 4 A 0 4479 0 A 2027-05-01 Common Stock 4479 4479 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. David G. Hugley as attorney-in-fact for Duy-Loan T. Le 2012-04-20