CUSIP: 97381W104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2013 | 53,204 | $410 | — | — |
| Q1 2013 | 51,686 | $410 | — | — |
| Q4 2012 | 51,553 | $427 | — | — |
| Q3 2012 | 53,406 | $539 | — | — |
| Q2 2012 | 53,363 | $515 | — | — |
| Q1 2012 | 53,757 | $629 | — | — |
| Q4 2011 | 52,842 | $620 | — | — |
| Q3 2011 | 44,132 | $515 | — | — |