Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 3,004 | $321 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 3,004 | $337 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 3,004 | $294 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 2,600 | $229 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 2,850 | $280 | $80.38 | $69.80 - $99.07 |
| Q4 2023 | 6,141 | $493 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 5,758 | $417 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 5,573 | $408 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 5,573 | $402 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 5,273 | $361 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 5,176 | $337 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 5,176 | $340 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 5,133 | $395 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 6,887 | $565 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 5,159 | $423 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 5,166 | $525 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 5,156 | $526 | $98.38 | $86.66 - $117.87 |
| Q4 2019 | 2,701 | $239 | $87.02 | $80.39 - $92.37 |
| Q3 2017 | 2,552 | $272 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 2,293 | $255 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 2,293 | $233 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 2,200 | $236 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 2,350 | $207 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 2,350 | $222 | $87.97 | $81.96 - $94.35 |
| Q2 2015 | 5,625 | $452 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 5,684 | $360 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 5,712 | $332 | $59.42 | $54.07 - $63.69 |