DONALD M CARLTON Insider Trading

General | Insider Transactions | Monthly Overview

Address: AMERICAN ELECTRIC POWER 1 RIVERSIDE PLAZA, 29TH FLOOR COLUMBUS 43215 OH

Companies in which DONALD M CARLTON is an Insider

NATIONAL INSTRUMENTS CORP

Trading Symbol: NATI
Industry: SERVICES-PREPACKAGED SOFTWARE [7372]
Position of DONALD M CARLTON: Director
Holdings: 16,243 shares
Current Value: $510,517
Latest Transaction: Jan 31 2011
$NATI Market Capitalization: $4.05B
$NATI Previous Close: $31.43

Last 4 weeks trend: HOLD
Last 3 months trend: HOLD View transactions

Latest Insider Trading Transactions of DONALD M CARLTON

Date	Ticker	Company	Owner	Relationship	Transaction	Code	Cost ($)	Shares	Transaction Value ($)	Total Shares	% Holdings
Jan 31 2011	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Option Exercise	M	25.53	7,500	191,450	0
Jan 31 2011	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Sell	S	44.00	7,500	330,000	16,243	23.7 K to 16.2 K (-31.59 %)
Jan 31 2011	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Buy	M	25.53	7,500	191,450	23,743	16.2 K to 23.7 K (+46.17 %)
Aug 09 2010	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Option Exercise	M	24.01	7,500	180,050	0
Aug 09 2010	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Sell	S	32.05	7,500	240,344	16,243	23.7 K to 16.2 K (-31.59 %)
Aug 09 2010	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Buy	M	24.01	7,500	180,050	23,743	16.2 K to 23.7 K (+46.17 %)
Jun 23 2010	NATI	NATIONAL INSTRUMEN ...	CARLTON DONALD M	Director	Option Exercise	A	0.00	3,720	0	3,720

View all DONALD M CARLTON insider transactions.