Donald K. Grierson is Director at PTC INC. (PTC). They have made 19 open-market trades across 2 companies since 2006, most recently 2020-02-12.
CIK 0001191246
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.
0 open-market purchases, against 19 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PTC | SELL | 2020-02-04 | 2020-02-05 | $86.84 | $434K | +1.1% | -23.0% | -18.6% |
| PTC | SELL | 2019-08-01 | 2019-08-02 | $67.57 | $338K | -3.6% | -4.3% | +0.8% |
| PTC | SELL | 2019-03-01 | 2019-03-01 | $93.31 | $933K | -2.9% | +1.0% | -9.1% |
| PTC | SELL | 2018-08-01 | 2018-08-01 | $92.66 | $927K | +1.4% | +9.0% | -13.9% |
| PTC | SELL | 2018-04-20 | 2018-04-24 | $84.51 | $423K | +2.6% | +3.5% | +17.1% |
| PTC | SELL | 2017-08-03 | 2017-08-04 | $53.77 | $269K | -0.1% | +3.4% | +22.9% |
| PTC | SELL | 2017-04-21 | 2017-04-25 | $52.20 | $491K | +0.9% | +8.0% | +3.5% |
| PTC | SELL | 2017-02-07 | 2017-02-09 | $53.78 | $538K | -0.1% | +1.6% | -2.8% |
| PTC | SELL | 2016-08-03 | 2016-08-04 | $39.41 | $394K | +4.7% | +9.5% | +10.5% |
| PTC | SELL · 10b5-1 | 2015-11-02 | 2015-11-03 | $35.94 | $180K | -12.1% | -1.4% | -11.2% |
| PTC | SELL · 10b5-1 | 2015-08-03 | 2015-08-05 | $36.40 | $182K | -12.1% | -1.4% | -1.4% |
| PTC | SELL | 2015-05-07 | 2015-05-08 | $38.09 | $190K | -12.1% | -1.4% | -1.4% |
| PTC | SELL | 2014-03-07 | 2014-03-10 | $39.24 | $392K | -12.1% | -1.4% | -1.4% |
| PMTC | SELL | 2013-02-01 | 2013-02-04 | $23.54 | $238K | N/A | N/A | N/A |
| PMTC | SELL | 2012-12-04 | 2012-12-05 | $20.10 | $201K | N/A | N/A | N/A |
| PMTC | SELL | 2012-08-15 | 2012-08-16 | $21.67 | $217K | N/A | N/A | N/A |
| PMTC | SELL | 2012-01-30 | 2012-02-01 | $25.10 | $377K | N/A | N/A | N/A |
| PMTC | SELL | 2011-09-07 | 2011-09-09 | $16.84 | $505K | N/A | N/A | N/A |
| PMTC | SELL | 2011-05-10 | 2011-05-11 | $23.12 | $231K | N/A | N/A | N/A |
| PMTC | SELL | 2010-03-12 | 2010-03-12 | $17.98 | $54K | N/A | N/A | N/A |
| PMTC | SELL | 2006-11-02 | 2006-11-06 | $18.51 | $231K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.