0001140361-11-024794.txt : 20110504
0001140361-11-024794.hdr.sgml : 20110504
20110504124804
ACCESSION NUMBER: 0001140361-11-024794
CONFORMED SUBMISSION TYPE: 4
PUBLIC DOCUMENT COUNT: 1
CONFORMED PERIOD OF REPORT: 20110501
FILED AS OF DATE: 20110504
DATE AS OF CHANGE: 20110504
REPORTING-OWNER:
OWNER DATA:
COMPANY CONFORMED NAME: Porterfield Robert
CENTRAL INDEX KEY: 0001307795
FILING VALUES:
FORM TYPE: 4
SEC ACT: 1934 Act
SEC FILE NUMBER: 000-25426
FILM NUMBER: 11809206
MAIL ADDRESS:
STREET 1: 11500 N. MOPAC EXPWY
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
X0303
4
2011-05-01
0
0000935494
NATIONAL INSTRUMENTS CORP /DE/
NATI
0001307795
Porterfield Robert
C/O NATIONAL INSTRUMENTS CORP
11500 N. MOPAC EXPWY
AUSTIN
TX
78759
0
1
0
0
Vice President
Common Stock
2011-05-01
4
M
0
7261
A
70874
D
Common Stock
2011-05-01
4
M
0
5257
A
76131
I
by Spouse
Common Stock
2011-05-02
5
M
0
297
23.9757
A
76428
I
by Spouse
Restricted Stock Units
2011-05-01
4
M
0
1001
0
D
2020-05-01
Common Stock
2435
1434
I
Spouse
Restricted Stock Units
2011-05-01
4
M
0
751
0
D
2021-05-01
Common Stock
2352
1601
I
Spouse
Restricted Stock Units
2011-05-01
4
M
0
1252
0
D
2022-05-01
Common Stock
4884
3632
I
Spouse
Restricted Stock Units
2011-05-01
4
M
0
1252
0
D
2023-05-01
Common Stock
5844
4592
I
Spouse
Restricted Stock Units
2011-05-01
4
M
0
1001
0
D
2024-05-01
Common Stock
5400
4399
I
Spouse
Restricted Stock Units
2011-05-01
4
M
0
2504
0
D
2020-05-01
Common Stock
6087
3583
D
Restricted Stock Units
2011-05-01
4
M
0
1252
0
D
2021-05-01
Common Stock
3921
2669
D
Restricted Stock Units
2011-05-01
4
M
0
1252
0
D
2022-05-01
Common Stock
4884
3632
D
Restricted Stock Units
2011-05-01
4
M
0
1252
0
D
2023-05-01
Common Stock
5844
4592
D
Restricted Stock Units
2011-05-01
4
M
0
1001
0
D
2024-05-01
Common Stock
5400
4399
D
Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
The restricted stock units vest and become exercisable based on time and performance milestones set by the Issuer.
On February 22, 2011, the common stock of National Instruments Corporation split 3-for-2, resulting in the reporting person's ownership of additional shares of common stock.
David G. Hugley as attorney-in-fact for Robert R. Porterfield
2011-05-04