| 2021-03-10 | West Neal E | EVP & CFO | Sell | 400 | $119.19 | $47,676.00 | -11.5% | → |
| 2021-03-08 | Weaver Brant | VP - Strategic Development | Sell | 378 | $115.41 | $43,624.98 | -6.7% | → |
| 2021-03-02 | Miller Del L | VP Treasury Risk & Procurement | Sell | 1,416 | $119.34 | $168,985.16 | -25.1% | → |
| 2021-03-02 | ELLSWORTH MELINDA C | VP IR & Corp. Communications | Sell | 1,500 | $120.96 | $181,439.70 | -19.6% | → |
| 2021-03-02 | Harvey Keith | President & CEO | Sell | 1,000 | $119.69 | $119,690.00 | -1.4% | → |
| 2021-03-02 | HOCKEMA JACK A | - | Sell | 12,000 | $120.01 | $1,440,130.00 | -24.4% | → |
| 2020-12-04 | HOCKEMA JACK A | - | Sell | 5,000 | $95.97 | $479,856.50 | -36.3% | → |
| 2020-12-03 | MARTIN LAURALEE | - | Sell | 11,482 | $89.14 | $1,023,448.07 | -100% | → |
| 2020-12-01 | Harvey Keith | President & CEO | Sell | 1,000 | $82.00 | $82,000.00 | -1.4% | → |
| 2020-11-09 | Harvey Keith | President & CEO | Sell | 1,500 | $70.00 | $105,000.00 | -2.1% | → |
| 2020-11-03 | Harvey Keith | President & CEO | Sell | 500 | $65.55 | $32,775.00 | -0.7% | → |
| 2020-10-16 | Harvey Keith | President & CEO | Sell | 500 | $65.00 | $32,500.00 | -0.7% | → |
| 2020-09-02 | Harvey Keith | President & CEO | Sell | 500 | $65.00 | $32,500.00 | -0.7% | → |
| 2020-08-10 | Harvey Keith | President & CEO | Sell | 500 | $70.00 | $35,000.00 | -0.7% | → |
| 2020-08-05 | Harvey Keith | President & CEO | Sell | 500 | $65.00 | $32,500.00 | -0.7% | → |
| 2020-07-01 | Harvey Keith | President & COO | Sell | 1,000 | $73.07 | $73,070.00 | -1.3% | → |
| 2020-06-05 | HOCKEMA JACK A | CEO | Sell | 4,500 | $81.31 | $365,882.87 | -8.7% | → |
| 2020-06-01 | Harvey Keith | President & COO | Sell | 1,000 | $71.36 | $71,360.00 | -1.3% | → |
| 2020-04-30 | HOCKEMA JACK A | CEO | Sell | 3,000 | $73.42 | $220,267.20 | -14.1% | → |
| 2020-01-22 | HOCKEMA JACK A | CEO | Sell | 12,500 | $101.14 | $1,264,240.00 | -37.0% | → |
| 2019-12-12 | Bartholomew Carolyn | - | Sell | 1,000 | $115.00 | $115,000.00 | -6.9% | → |
| 2019-11-20 | HOCKEMA JACK A | CEO | Sell | 12,500 | $108.84 | $1,360,524.76 | -14.9% | → |
| 2019-11-04 | DONNAN JOHN MALCOLM | EVP - Legal, Compliance & HR | Sell | 3,749 | $110.00 | $412,390.00 | -26.6% | → |
| 2019-11-04 | Parkinson Ray | VP - Advanced Engineering | Sell | 2,594 | $109.42 | $283,824.33 | -36.9% | → |
| 2019-11-04 | West Neal E | SVP & CFO | Sell | 750 | $110.00 | $82,500.00 | -17.8% | → |
| 2019-11-01 | Harvey Keith | President & COO | Sell | 658 | $107.37 | $70,649.46 | -1.0% | → |
| 2019-10-31 | Krouse Mark | VP - Human Resources | Sell | 2,283 | $108.06 | $246,694.00 | -28.9% | → |
| 2019-10-29 | West Neal E | SVP & CFO | Sell | 750 | $108.01 | $81,007.50 | -15.1% | → |
| 2019-10-28 | Wilcox Brett | - | Sell | 4,000 | $108.45 | $433,800.00 | -23.8% | → |
| 2019-10-28 | Parkinson Ray | VP - Advanced Engineering | Sell | 1,400 | $108.61 | $152,052.60 | -14.2% | → |
| 2019-10-24 | DONNAN JOHN MALCOLM | EVP - Legal, Compliance & HR | Sell | 5,000 | $105.00 | $525,000.00 | -26.2% | → |
| 2019-10-01 | Harvey Keith | President & COO | Sell | 1,500 | $99.10 | $148,650.00 | -1.1% | → |
| 2019-09-19 | HOCKEMA JACK A | CEO | Sell | 12,500 | $99.16 | $1,239,442.50 | -21.3% | → |
| 2019-09-11 | Harvey Keith | President & COO | Sell | 1,500 | $100.00 | $150,000.00 | -2.2% | → |
| 2019-09-11 | West Neal E | SVP & CFO | Sell | 750 | $100.00 | $75,000.00 | -13.1% | → |
| 2019-09-10 | ELLSWORTH MELINDA C | VP IR & Corp. Communications | Sell | 500 | $97.00 | $48,500.00 | -7.5% | → |
| 2019-09-09 | Harvey Keith | President & COO | Sell | 500 | $95.00 | $47,500.00 | -0.7% | → |
| 2019-09-05 | Harvey Keith | President & COO | Sell | 500 | $90.00 | $45,000.00 | -0.7% | → |
| 2019-08-13 | Bartholomew Carolyn | - | Sell | 1,000 | $95.00 | $95,000.00 | -6.4% | → |
| 2019-08-13 | ELLSWORTH MELINDA C | VP IR & Corp. Communications | Sell | 600 | $96.00 | $57,600.00 | -8.3% | → |
| 2019-08-01 | Harvey Keith | President & COO | Sell | 1,000 | $95.71 | $95,710.00 | -1.4% | → |
| 2019-07-31 | HOCKEMA JACK A | CEO | Sell | 12,500 | $95.96 | $1,199,528.17 | -9.5% | → |
| 2019-07-01 | Harvey Keith | President & COO | Sell | 1,000 | $97.88 | $97,880.00 | -1.4% | → |