Securities Trading Policy
Robert Y. Tsien
An explanation of the transaction codes used in the reports posted below.
| Initial Statement | Statement of Changes |
|---|---|
| April 26, 2002 |
|
| April 26, 2004 | August 9, 2004 |
| May
6, 2005 |
August
9, 2005 |
| December
31, 2005 |
|
| April 1, 2006 | |
| May 6, 2006 | |
| June 5, 2006 | |
| March 29, 2007 | |
| April 1, 2007 | |
| May 6, 2007 | |
| June 5, 2007 | |
| January 31, 2008 | |
| March 6, 2008 |