X0306
4
2017-10-16
0
0000935494
NATIONAL INSTRUMENTS CORP
NATI
0001008359
TRUCHARD JAMES J
C/O NATIONAL INSTRUMENTS CORP
11500 N. MOPAC EXPRESSWAY
AUSTIN
TX
78759-3504
1
0
0
0
Common Stock
2017-10-16
4
S
0
7500
44.43
D
8815166
D
Common Stock
380875
I
Held by Truchard 2010 Grandchildren's Trust, Dr. Truchard is the trustee.
Common Stock
302144
I
Held by Truchard Descendant's Trust, Dr. Truchard is the trustee.
Common Stock
302143
I
Held by Truchard Descendant's Trust II, Dr. Truchard is the trustee.
Common Stock
77243
I
Held by Truchard Foundation, Dr. Truchard is the president.
The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 22, 2016.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.34 to $44.78, inclusive. The reporting person undertakes to provide to National Instruments Corporation, any security holder of National Instruments Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.
David G. Hugley as attorney-in-fact for James J. Truchard
2017-10-17