Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2014 | 3,725 | $291 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 5,575 | $449 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 3,895 | $274 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 3,895 | $281 | $76.01 | $70.25 - $80.50 |