Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,400 | $256 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 2,400 | $269 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 2,400 | $235 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 2,400 | $211 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 2,500 | $246 | $80.38 | $69.80 - $99.07 |
| Q1 2024 | 2,600 | $218 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 2,600 | $209 | $76.85 | $70.86 - $83.00 |
| Q4 2021 | 2,500 | $205 | $83.82 | $78.33 - $89.50 |
| Q2 2021 | 2,300 | $234 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 2,400 | $245 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 2,400 | $212 | $85.92 | $79.49 - $94.30 |
| Q1 2019 | 1,900 | $206 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 1,876 | $219 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 2,200 | $285 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 2,200 | $273 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 2,200 | $206 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 2,200 | $219 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 2,000 | $213 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 2,000 | $221 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 2,000 | $204 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 2,000 | $213 | $93.06 | $83.53 - $108.75 |
| Q2 2016 | 2,200 | $208 | $87.97 | $81.96 - $94.35 |