Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2017 | 1,839 | $183 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 1,983 | $211 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 1,983 | $219 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 1,983 | $203 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 1,983 | $211 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 1,983 | $174 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 1,983 | $187 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 1,983 | $166 | $80.09 | $72.30 - $88.00 |