Ticker: NAT CUSIP: G65773106 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2015 | 22,700 | $323 | $12.81 | $11.11 - $14.88 |
| Q1 2015 | 22,700 | $270 | $10.57 | $9.08 - $11.98 |
| Q3 2013 | 14,600 | $120 | $8.35 | $7.23 - $10.24 |
| Q2 2013 | 32,900 | $249 | $8.57 | $6.85 - $11.30 |