| Major company event | 8-K | 2002-08-07 | 2002-08-07 |
| Quarterly report | 10-Q | 2002-08-07 | 2002-06-30 |
| Employee plan annual report | 11-K | 2002-07-12 | 2001-12-31 |
| POS AM | - | 2002-07-02 | - |
| NT 11-K | - | 2002-06-28 | 2001-12-31 |
| Quarterly report | 10-Q | 2002-05-14 | 2002-03-31 |
| Annual report to shareholders | ARS | 2002-03-20 | 2001-12-31 |
| Proxy statement | DEF 14A | 2002-03-19 | 2002-04-25 |
| 10-K405 | - | 2002-03-18 | 2001-12-31 |
| Passive ownership stake | SC 13G | 2002-02-15 | - |
| New insider ownership | 3 | 2002-02-04 | 2002-01-22 |
| Activist ownership stake (update) | SC 13D/A | 2002-02-04 | - |
| Quarterly report | 10-Q | 2001-11-13 | 2001-09-30 |
| Activist ownership stake (update) | SC 13D/A | 2001-09-20 | - |
| Quarterly report | 10-Q | 2001-08-14 | 2001-06-30 |
| Activist ownership stake | SC 13D | 2001-08-10 | - |
| 425 | - | 2001-08-07 | - |
| Employee plan annual report | 11-K | 2001-06-28 | 2000-12-31 |
| 425 | - | 2001-06-21 | - |
| Quarterly report (amended) | 10-Q/A | 2001-05-23 | 2001-03-31 |
| Quarterly report | 10-Q | 2001-05-15 | 2001-03-31 |
| Employee stock plan | S-8 | 2001-05-10 | - |
| Proxy statement | DEF 14A | 2001-03-15 | 2001-04-26 |
| Annual report | 10-K | 2001-03-13 | 2000-12-31 |
| Quarterly report | 10-Q | 2000-11-13 | 2000-09-30 |
| S-8 POS | - | 2000-10-17 | - |
| Quarterly report | 10-Q | 2000-08-14 | 2000-06-30 |
| Employee plan annual report | 11-K | 2000-06-28 | 1999-12-31 |
| Quarterly report | 10-Q | 2000-04-27 | 2000-03-31 |
| Insider trade | 4 | 2000-04-24 | 2000-03-31 |
| Proxy statement | DEF 14A | 2000-03-07 | 2000-04-19 |
| Annual report | 10-K | 2000-03-06 | 1999-12-31 |
| Major company event (amended) | 8-K/A | 2000-01-04 | 1999-10-21 |
| Quarterly report | 10-Q | 1999-10-29 | 1999-09-30 |
| Major company event | 8-K | 1999-10-27 | 1999-10-21 |
| Quarterly report | 10-Q | 1999-07-30 | 1999-06-30 |
| Employee plan annual report | 11-K | 1999-06-29 | 1998-12-31 |
| Employee plan annual report | 11-K | 1999-06-25 | 1998-12-31 |
| Quarterly report | 10-Q | 1999-04-30 | 1999-03-31 |
| 10-K405 | - | 1999-03-08 | 1998-12-31 |
| Proxy statement | DEF 14A | 1999-03-08 | 1999-04-21 |
| Passive ownership stake (update) | SC 13G/A | 1999-02-12 | - |
| Passive ownership stake (update) | SC 13G/A | 1999-02-11 | - |
| Major company event | 8-K | 1999-02-02 | 1999-01-28 |
| 8-A12B | - | 1999-02-02 | - |
| Passive ownership stake (update) | SC 13G/A | 1999-01-26 | - |
| Quarterly report | 10-Q | 1998-10-30 | 1998-09-30 |
| Quarterly report | 10-Q | 1998-07-29 | 1998-06-30 |
| Insider trade | 4 | 1998-07-10 | 1998-06-30 |
| Employee plan annual report | 11-K | 1998-06-24 | 1997-12-31 |
