| T-3 | - | 2003-01-09 | - |
| SC TO-I | - | 2003-01-08 | - |
| SC TO-I | - | 2003-01-03 | - |
| Activist ownership stake (update) | SC 13D/A | 2002-12-09 | - |
| Activist ownership stake (update) | SC 13D/A | 2002-11-27 | - |
| Quarterly report | 10-Q | 2002-11-14 | 2002-09-30 |
| Major company event | 8-K | 2002-10-07 | 2002-03-31 |
| Quarterly report (amended) | 10-Q/A | 2002-10-07 | 2002-03-31 |
| Major company event | 8-K | 2002-09-19 | 2001-12-31 |
| Annual report (amended) | 10-K/A | 2002-09-18 | 2001-12-31 |
| Major company event | 8-K | 2002-08-20 | 2002-06-30 |
| Quarterly report | 10-Q | 2002-08-20 | 2002-06-30 |
| NT 10-Q | - | 2002-08-14 | 2002-06-30 |
| Quarterly report | 10-Q | 2002-05-15 | 2002-03-31 |
| Proxy materials | DEFA14A | 2002-05-02 | - |
| Proxy materials | DEFA14A | 2002-04-29 | - |
| Proxy materials | DEFA14A | 2002-04-29 | - |
| Proxy materials | DEFA14A | 2002-04-29 | - |
| Proxy materials | DEFA14A | 2002-04-29 | - |
| Major company event | 8-K | 2002-04-29 | 2002-04-29 |
| DFAN14A | - | 2002-04-17 | - |
| PREC14A | - | 2002-04-17 | - |
| Annual report to shareholders | ARS | 2002-04-15 | 2001-12-31 |
| Proxy statement | DEF 14A | 2002-04-12 | 2002-05-14 |
| Annual report | 10-K | 2002-03-28 | 2001-12-31 |
| Passive ownership stake (update) | SC 13G/A | 2002-02-11 | - |
| Activist ownership stake (update) | SC 13D/A | 2002-02-04 | - |
| Activist ownership stake (update) | SC 13D/A | 2002-01-16 | - |
| Quarterly report | 10-Q | 2001-11-14 | 2001-10-31 |
| SC TO-I/A | - | 2001-10-15 | - |
| SC TO-I/A | - | 2001-10-02 | - |
| SC TO-I/A | - | 2001-09-24 | - |
| SC TO-I | - | 2001-09-06 | - |
| SC TO-I | - | 2001-09-06 | - |
| Quarterly report | 10-Q | 2001-08-13 | 2001-06-30 |
| Activist ownership stake (update) | SC 13D/A | 2001-07-23 | - |
| SC TO-I/A | - | 2001-06-12 | - |
| SC TO-I/A | - | 2001-05-25 | - |
| Quarterly report | 10-Q | 2001-05-15 | 2001-03-31 |
| SC TO-I/A | - | 2001-05-09 | - |
| SC TO-I | - | 2001-05-07 | - |
| SC TO-C | - | 2001-04-30 | - |
| Proxy statement | DEF 14A | 2001-04-30 | 2001-04-30 |
| Annual report | 10-K | 2001-04-06 | 2000-12-31 |
| Major company event | 8-K | 2001-04-06 | 2001-04-02 |
| NT 10-K | - | 2001-04-03 | 2000-12-31 |
| Activist ownership stake (update) | SC 13D/A | 2001-03-12 | - |
| Activist ownership stake (update) | SC 13D/A | 2001-03-08 | - |
| Activist ownership stake (update) | SC 13D/A | 2001-03-02 | - |
| Activist ownership stake (update) | SC 13D/A | 2001-02-23 | - |
