Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2017 | 2,800 | $298 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 2,800 | $309 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 2,800 | $286 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 2,800 | $298 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 7,400 | $650 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 7,400 | $698 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 7,400 | $620 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 7,400 | $613 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 7,400 | $624 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 50,100 | $4,024 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 50,100 | $3,176 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 50,100 | $2,908 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 50,100 | $3,042 | $66.40 | $60.68 - $75.50 |