Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2018 | 1,395 | $163 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 1,415 | $183 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 2,080 | $258 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 2,140 | $201 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 2,140 | $213 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 2,260 | $241 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 2,345 | $259 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 2,449 | $250 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 2,364 | $252 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 2,364 | $208 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 2,264 | $214 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 1,545 | $129 | $80.09 | $72.30 - $88.00 |