| Quarterly report | 10-Q | 2002-11-13 | 2002-09-30 |
| Major company event | 8-K | 2002-09-30 | 2002-09-24 |
| 8-A12G | - | 2002-09-30 | - |
| Quarterly report | 10-Q | 2002-08-14 | 2002-06-30 |
| Passive ownership stake (update) | SC 13G/A | 2002-08-13 | - |
| Passive ownership stake | SC 13G | 2002-06-10 | - |
| Passive ownership stake | SC 13G | 2002-06-10 | - |
| Quarterly report | 10-Q | 2002-05-15 | 2002-03-31 |
| Employee stock plan | S-8 | 2002-04-12 | - |
| Employee stock plan | S-8 | 2002-04-12 | - |
| Proxy statement | DEF 14A | 2002-04-03 | 2002-05-21 |
| Annual report | 10-K | 2002-03-19 | 2001-12-31 |
| REGDEX | - | 2002-02-25 | - |
| REGDEX | - | 2002-02-25 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-14 | - |
| Passive ownership stake | SC 13G | 2002-02-13 | - |
| Passive ownership stake (update) | SC 13G/A | 2002-02-12 | - |
| RW | - | 2002-02-07 | - |
| Securities registration | S-3 | 2002-01-07 | - |
| Major company event | 8-K | 2001-12-27 | 2001-12-12 |
| Passive ownership stake (update) | SC 13G/A | 2001-12-17 | - |
| Employee stock plan | S-8 | 2001-12-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-12-10 | - |
| Quarterly report | 10-Q | 2001-11-14 | 2001-09-30 |
| 424B3 | - | 2001-10-30 | - |
| S-4/A | - | 2001-10-26 | - |
| Securities registration | S-3 | 2001-10-25 | - |
| Activist ownership stake (update) | SC 13D/A | 2001-10-22 | - |
| S-4 | - | 2001-10-10 | - |
| Activist ownership stake | SC 13D | 2001-10-03 | - |
| Major company event | 8-K | 2001-09-27 | 2001-09-23 |
| 425 | - | 2001-09-25 | - |
| 425 | - | 2001-09-24 | - |
| Employee stock plan | S-8 | 2001-09-21 | - |
| Passive ownership stake | SC 13G | 2001-08-20 | - |
| Quarterly report | 10-Q | 2001-08-13 | 2001-06-30 |
| Major company event | 8-K | 2001-06-01 | 2001-05-25 |
| Quarterly report | 10-Q | 2001-05-11 | 2001-03-31 |
| Employee stock plan | S-8 | 2001-04-24 | - |
| Proxy statement | DEF 14A | 2001-04-12 | 2001-05-24 |
| Passive ownership stake (update) | SC 13G/A | 2001-04-09 | - |
| Annual report | 10-K | 2001-03-28 | 2000-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2001-02-22 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-15 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-14 | - |
| Passive ownership stake | SC 13G | 2001-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 2001-02-07 | - |
| Passive ownership stake | SC 13G | 2001-01-31 | - |
