| New insider ownership | 3 | 2003-08-20 | 2003-08-18 |
| Major company event | 8-K | 2003-08-14 | 2003-08-14 |
| Insider trade | 4 | 2003-08-14 | 2003-08-07 |
| Passive ownership stake (update) | SC 13G/A | 2003-08-08 | - |
| New insider ownership | 3 | 2003-08-05 | 2003-08-04 |
| Employee plan annual report | 11-K | 2003-07-31 | 2003-02-01 |
| Major company event | 8-K | 2003-07-23 | 2003-07-22 |
| Major company event | 8-K | 2003-06-13 | 2003-06-13 |
| Quarterly report | 10-Q | 2003-06-04 | 2003-05-03 |
| Major company event | 8-K | 2003-05-16 | 2003-05-15 |
| Employee stock plan | S-8 | 2003-05-15 | - |
| Major company event | 8-K | 2003-04-08 | 2003-04-07 |
| Passive ownership stake (update) | SC 13G/A | 2003-03-28 | - |
| Proxy statement | DEF 14A | 2003-03-21 | 2003-05-01 |
| Annual report | 10-K | 2003-03-21 | 2003-02-01 |
| NO ACT | - | 2003-03-10 | 2003-01-08 |
| NO ACT | - | 2003-03-10 | 2003-01-08 |
| Major company event | 8-K | 2003-03-05 | 2003-03-04 |
| NO ACT | - | 2003-02-18 | 2003-02-14 |
| Passive ownership stake (update) | SC 13G/A | 2003-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 2003-02-03 | - |
| Quarterly report | 10-Q | 2002-12-09 | 2002-11-02 |
| Prospectus supplement | 424B2 | 2002-11-20 | - |
| Major company event | 8-K | 2002-11-20 | 2002-11-18 |
| Major company event | 8-K | 2002-11-18 | 2002-11-14 |
| Quarterly report | 10-Q | 2002-09-16 | 2002-08-03 |
| Major company event | 8-K | 2002-08-13 | 2002-08-13 |
| Passive ownership stake (update) | SC 13G/A | 2002-08-12 | - |
| Employee plan annual report | 11-K | 2002-07-26 | 2002-02-02 |
| Quarterly report | 10-Q | 2002-06-18 | 2002-05-04 |
| S-3/A | - | 2002-06-03 | - |
| S-3/A | - | 2002-04-17 | - |
| 424B3 | - | 2002-04-16 | - |
| Annual report | 10-K | 2002-04-15 | 2002-02-02 |
| Proxy statement | DEF 14A | 2002-04-15 | 2002-05-21 |
| Securities registration | S-3 | 2002-03-06 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-01-23 | - |
| Quarterly report | 10-Q | 2001-12-07 | 2001-11-03 |
| Quarterly report | 10-Q | 2001-09-05 | 2001-08-04 |
| Passive ownership stake (update) | SC 13G/A | 2001-08-10 | - |
| Employee plan annual report | 11-K | 2001-07-27 | 2001-02-03 |
| Major company event | 8-K | 2001-06-26 | 2001-06-26 |
| Quarterly report | 10-Q | 2001-06-15 | 2001-05-05 |
| S-4/A | - | 2001-05-22 | - |
| 424B3 | - | 2001-05-01 | - |
| 10-K405/A | - | 2001-04-20 | 2001-02-03 |
| S-4 | - | 2001-04-18 | - |
| Proxy statement | DEF 14A | 2001-04-17 | 2001-05-31 |
