Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2018 | 2,073 | $195 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 2,600 | $259 | $109.11 | $95.50 - $121.40 |
| Q3 2015 | 4,880 | $412 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 4,880 | $392 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 2,280 | $145 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 2,280 | $133 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 2,280 | $139 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 2,300 | $168 | $71.81 | $67.09 - $77.75 |
| Q2 2013 | 8,351 | $602 | $76.01 | $70.25 - $80.50 |