0001140361-13-017563.txt : 20130426 0001140361-13-017563.hdr.sgml : 20130426 20130426143749 ACCESSION NUMBER: 0001140361-13-017563 CONFORMED SUBMISSION TYPE: 4/A PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20120501 FILED AS OF DATE: 20130426 DATE AS OF CHANGE: 20130426 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: LE DUY LOAN T CENTRAL INDEX KEY: 0001192886 FILING VALUES: FORM TYPE: 4/A SEC ACT: 1934 Act SEC FILE NUMBER: 000-25426 FILM NUMBER: 13786761 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/A 1 doc1.xml FORM 4/A X0306 4/A 2012-05-01 2012-05-02 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 Common Stock 2012-05-01 4 M 0 5305 A 52332 D Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. The amount of securities beneficially owned was erroneously reported as 47,332. David G. Hugley as attorney-in-fact for Duy-Loan T. Le 2013-04-26