CUSIP: 97381W104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2013 | 293,800 | $2,265 | — | — |
| Q1 2013 | 273,600 | $2,170 | — | — |
| Q4 2012 | 265,000 | $2,194 | — | — |
| Q3 2012 | 256,300 | $2,586 | — | — |
| Q2 2012 | 266,200 | $2,571 | — | — |
| Q1 2012 | 352,300 | $4,124 | — | — |
| Q4 2011 | 563,480 | $6,615 | — | — |
| Q3 2011 | 386,480 | $4,502 | — | — |
| Q2 2011 | 135,260 | $1,753 | — | — |
| Q1 2011 | 282,660 | $3,641 | — | — |
| Q4 2010 | 72,110 | $1,005 | — | — |
| Q1 2010 | 207,500 | $2,260 | — | — |
| Q4 2009 | 234,500 | $2,577 | — | — |
| Q3 2009 | 234,100 | $2,371 | — | — |
| Q2 2009 | 234,100 | $1,957 | — | — |
| Q1 2009 | 233,600 | $1,883 | — | — |