Donald M. Carlton is Director at NATIONAL INSTRUMENTS CORP /DE/ (NATI). They have made 12 open-market trades across 2 companies since 2006, most recently 2017-05-01.
CIK 0001092457
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $15K since 2008, against 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NATI | SELL | 2013-11-05 | 2013-11-07 | $32.01 | $480K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2013-02-04 | 2013-02-05 | $29.47 | $332K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2011-01-27 | 2011-01-31 | $44.00 | $330K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2010-08-05 | 2010-08-09 | $32.05 | $240K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2010-04-29 | 2010-04-30 | $34.92 | $349K | -2.4% | -0.7% | -0.7% |
| TIN | SELL | 2009-08-10 | 2009-08-10 | $16.21 | $81K | N/A | N/A | N/A |
| TIN | BUY | 2008-12-08 | 2008-12-10 | $3.09 | $15K | N/A | N/A | N/A |
| NATI | SELL | 2008-08-06 | 2008-08-07 | $34.15 | $307K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2007-11-15 | 2007-11-16 | $32.23 | $169K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2007-08-30 | 2007-08-31 | $31.50 | $189K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2007-02-02 | 2007-02-06 | $27.66 | $245K | -2.4% | -0.7% | -0.7% |
| NATI | SELL | 2006-10-26 | 2006-10-27 | $31.28 | $250K | -2.4% | -0.7% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.