Donald K. Grierson serves as Executive at PARAMETRIC TECHNOLOGY CORP, where they oversee executive responsibilities. Since joining the company, Donald K. Grierson has executed 54 insider transactions totaling $6.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 12, 2020 involved exercising options for 2,779 shares valued at $0.
Donald K. Grierson currently holds 42,426 shares of PARAMETRIC TECHNOLOGY CORP (PMTC), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Donald K. Grierson has been a net seller of PMTC stock. They have purchased $0 and sold $6.3M worth of shares.
Donald K. Grierson's most recent insider trade was on Feb 12, 2020, when they sold 2,779 shares at $0.00 per share.
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| $86.09 |
| Discretionary |
| Feb 4, 2020 | PTC | $356.7K | Sale | 4,100 | $87.01 | Discretionary |
| Aug 1, 2019 | PTC | $6.8K | Sale | 100 | $67.54 | Discretionary |
| Aug 1, 2019 | PTC | $6.7K | Sale | 100 | $67.49 | Discretionary |
| Aug 1, 2019 | PTC | $13.5K | Sale | 200 | $67.52 | Discretionary |
| Aug 1, 2019 | PTC | $283.8K | Sale | 4,200 | $67.58 | Discretionary |
| Aug 1, 2019 | PTC | $6.8K | Sale | 100 | $67.65 | Discretionary |
| Aug 1, 2019 | PTC | $20.3K | Sale | 300 | $67.55 | Discretionary |
| Mar 6, 2019 | PTC | $0 | Option Exercise | 3,113 | $N/A | Discretionary |
| Mar 1, 2019 | PTC | $73.5K | Sale | 784 | $93.71 | Discretionary |
| Mar 1, 2019 | PTC | $393.1K | Sale | 4,216 | $93.24 | Discretionary |
| Aug 1, 2018 | PTC | $465.1K | Sale | 5,000 | $93.02 | Discretionary |
| Aug 1, 2018 | PTC | $461.5K | Sale | 5,000 | $92.30 | Discretionary |
| Apr 20, 2018 | PTC | $422.6K | Sale | 5,000 | $84.51 | Discretionary |
| Mar 8, 2018 | PTC | $0 | Option Exercise | 4,484 | $N/A | Discretionary |
| Aug 3, 2017 | PTC | $268.9K | Sale | 5,000 | $53.77 | Discretionary |
| Apr 21, 2017 | PTC | $31.6K | Sale | 600 | $52.74 | Discretionary |
| Apr 21, 2017 | PTC | $229.5K | Sale | 4,400 | $52.16 | Discretionary |
| Mar 1, 2017 | PTC | $0 | Option Exercise | 7,471 | $N/A | Discretionary |
| Aug 3, 2016 | PTC | $197.1K | Sale | 5,000 | $39.41 | Discretionary |
| Mar 2, 2016 | PTC | $0 | Option Exercise | 7,136 | $N/A | Discretionary |
| Nov 2, 2015 | PTC | $179.7K | Sale | 5,000 | $35.94 | Discretionary |
| Aug 3, 2015 | PTC | $182.0K | Sale | 5,000 | $36.40 | Discretionary |
| May 7, 2015 | PTC | $190.4K | Sale | 5,000 | $38.09 | Discretionary |
| Mar 4, 2015 | PTC | $0 | Option Exercise | 7,535 | $N/A | Discretionary |
| Mar 7, 2014 | PTC | $392.4K | Sale | 10,000 | $39.24 | Discretionary |
| Mar 5, 2014 | PTC | $0 | Option Exercise | 12,249 | $N/A | Discretionary |
| Feb 1, 2013 | PMTC | $237.8K | Sale | 10,103 | $23.54 | Discretionary |
| Dec 4, 2012 | PMTC | $201.0K | Sale | 10,000 | $20.10 | Discretionary |