CUSIP: 97263M109 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2011 | 24,946 | $835 | — | — |
| Q4 2010 | 23,356 | $770 | — | — |
| Q3 2010 | 23,786 | $538 | — | — |
| Q2 2010 | 155,648 | $2,770 | — | — |
| Q1 2010 | 156,148 | $3,500 | — | — |
| Q4 2009 | 229,732 | $5,474 | — | — |
| Q3 2009 | 52,908 | $946 | — | — |
| Q2 2009 | 87,860 | $1,207 | — | — |
| Q1 2009 | 50,380 | $401 | — | — |
| Q4 2008 | 129,924 | $855 | — | — |