Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 2,279 | $243 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 2,681 | $301 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 2,676 | $262 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 2,401 | $211 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 2,759 | $272 | $80.38 | $69.80 - $99.07 |
| Q2 2017 | 762 | $84 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 1,762 | $180 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 1,379 | $147 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 1,053 | $92 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 953 | $90 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 1,153 | $97 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 944 | $78 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 1,444 | $122 | $81.19 | $74.57 - $88.00 |
| Q1 2015 | 1,444 | $92 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 1,435 | $83 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 935 | $57 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 901 | $66 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 901 | $70 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 893 | $72 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 893 | $63 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 1,075 | $77 | $76.01 | $70.25 - $80.50 |