The following table details the trading activities
(stock purchases, stock sales, and stock option exercises)
reported to the Securities and Exchange Commission (SEC)
by insider Porterfield Robert since year 2005.
The trader's CIK number is 1307795.
At the time of this reporting, Porterfield Robert is the Vice President of National Instruments Corp /de/ .
(stock ticker symbol NATI).
See this page for all insider trading activities at National Instruments Corp /de/ .
Stock purchases, sales, and option exercises reported by insider Porterfield Robert since 2005.
Trade Date
Symbol
Company Name (Issuer)
Trade Type
Shares
Price ($)
Value ($)
2008-08-08
NATI
National Instruments Corp /de/
Option Exercise
6,750
12.22
82,499
2008-08-08
NATI
National Instruments Corp /de/
Sale
6,750
35.23
237,802
2008-08-01
NATI
National Instruments Corp /de/
Option Exercise
501
25.01
12,528
2008-05-01
NATI
National Instruments Corp /de/
Option Exercise
4,662
15.22
70,958
2008-02-13
NATI
National Instruments Corp /de/
Option Exercise
13,950
15.31
213,511
2007-08-01
NATI
National Instruments Corp /de/
Option Exercise
515
23.68
12,195
2007-11-01
NATI
National Instruments Corp /de/
Option Exercise
419
27.47
11,510
2007-11-29
NATI
National Instruments Corp /de/
Sale
8,000
33.16
265,240
2007-08-30
NATI
National Instruments Corp /de/
Sale
10,007
30.93
309,476
2007-05-01
NATI
National Instruments Corp /de/
Option Exercise
3,337
15.79
52,682
2007-02-09
NATI
National Instruments Corp /de/
Option Exercise
10,007
9.63
96,364
2007-02-01
NATI
National Instruments Corp /de/
Option Exercise
490
24.49
11,999
2007-02-02
NATI
National Instruments Corp /de/
Option Exercise
7,880
9.63
75,882
2007-02-02
NATI
National Instruments Corp /de/
Sale
7,880
129.84
1,023,162
2006-11-01
NATI
National Instruments Corp /de/
Option Exercise
482
23.59
11,369
2006-08-01
NATI
National Instruments Corp /de/
Option Exercise
625
23.59
14,742
2006-05-01
NATI
National Instruments Corp /de/
Option Exercise
1,638
.00
0
2006-04-03
NATI
National Instruments Corp /de/
Option Exercise
1,039
20.94
21,760
2006-01-30
NATI
National Instruments Corp /de/
Option Exercise
8,157
5.93
48,338
2006-01-30
NATI
National Instruments Corp /de/
Sale
8,157
35.00
285,495
2005-08-03
NATI
National Instruments Corp /de/
Sale
6,555
29.00
190,095
2005-05-20
NATI
National Instruments Corp /de/
Sale
915
23.06
21,099
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Porterfield Robert
(Vice President of National Instruments Corp /de/ at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.
