Ticker: NAT CUSIP: G65773106 Class: Common Stock
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2012 | 9,185 | $125 | — | — |
| Q1 2012 | 6,960 | $111 | — | — |
| Q4 2011 | 5,765 | $69 | — | — |
| Q3 2011 | 7,835 | $110 | — | — |
| Q2 2011 | 6,420 | $146 | — | — |
| Q1 2011 | 5,375 | $134 | — | — |