Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2017 | 9,553 | $950 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 22,563 | $2,401 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 33,763 | $3,730 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 18,310 | $1,871 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 18,918 | $2,012 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 18,918 | $1,660 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 45,603 | $4,302 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 22,408 | $1,876 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 21,985 | $1,821 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 16,308 | $1,374 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 16,308 | $1,309 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 6,808 | $431 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 6,808 | $395 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 6,808 | $413 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 6,808 | $495 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 6,808 | $531 | $78.13 | $73.04 - $84.00 |