Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2016 | 2,643 | $281 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 3,827 | $336 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 5,126 | $484 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 5,646 | $473 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 9,848 | $816 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 10,096 | $851 | $81.19 | $74.57 - $88.00 |