Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 500 | $53 | $104.80 | $91.28 - $120.49 |
| Q2 2018 | 20 | $2 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 20 | $2 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 40 | $4 | $109.11 | $95.50 - $121.40 |