Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 252 | $27 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 220 | $25 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 353 | $35 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 376 | $33 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 362 | $36 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 241 | $18 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 127 | $10 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 130 | $11 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 135 | $11 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 148 | $11 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 157 | $11 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 175 | $13 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 158 | $11 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 150 | $9 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 122 | $8 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 273 | $21 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 251 | $20 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 308 | $25 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 342 | $35 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 338 | $34 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 298 | $25 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 239 | $20 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 304 | $26 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 329 | $22 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 228 | $21 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 160 | $14 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 78 | $7 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 552 | $61 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 829 | $98 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 1,168 | $152 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 1,187 | $148 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 1,149 | $108 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 1,134 | $113 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 1,240 | $132 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 4,109 | $454 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 4,103 | $420 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 21,286 | $2,265 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 20,876 | $1,833 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 53,964 | $5,090 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 48,882 | $4,092 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 47,702 | $3,952 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 40,682 | $3,429 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 831 | $66 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 817 | $51 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 817 | $47 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 837 | $50 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 37 | $2 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 27 | $2 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 20 | $2 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 203 | $14 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 388 | $28 | $76.01 | $70.25 - $80.50 |