| Major company event | 8-K | 1997-04-17 | 1997-01-30 |
| Quarterly report | 10-Q | 1997-04-14 | 1997-02-28 |
| Securities registration | S-3 | 1997-04-11 | - |
| Major company event | 8-K | 1997-04-11 | 1997-04-10 |
| Securities registration | S-3 | 1997-02-14 | - |
| Major company event | 8-K | 1997-02-13 | 1997-01-30 |
| Passive ownership stake (update) | SC 13G/A | 1997-02-13 | - |
| Passive ownership stake | SC 13G | 1997-02-13 | - |
| Passive ownership stake (update) | SC 13G/A | 1997-02-10 | - |
| Passive ownership stake (update) | SC 13G/A | 1997-02-04 | - |
| 424B4 | - | 1997-01-28 | - |
| 8A12BT/A | - | 1997-01-24 | - |
| S-3/A | - | 1997-01-24 | - |
| 8A12BT | - | 1997-01-17 | - |
| S-3/A | - | 1997-01-13 | - |
| Quarterly report | 10-Q | 1997-01-13 | 1996-11-30 |
| 424B3 | - | 1996-12-24 | - |
| S-4/A | - | 1996-12-19 | - |
| S-4 | - | 1996-12-18 | - |
| Securities registration | S-3 | 1996-12-13 | - |
| Major company event | 8-K | 1996-11-05 | 1996-10-16 |
| Activist ownership stake | SC 13D | 1996-10-28 | - |
| Activist ownership stake | SC 13D | 1996-10-28 | - |
| Quarterly report | 10-Q | 1996-10-11 | 1996-08-31 |
| Annual report | 10-K | 1996-08-26 | 1996-05-31 |
| Proxy statement | DEF 14A | 1996-08-26 | 1996-09-25 |
| Passive ownership stake (update) | SC 13G/A | 1996-06-06 | - |
| Quarterly report | 10-Q | 1996-04-15 | 1996-02-29 |
| Passive ownership stake (update) | SC 13G/A | 1996-03-08 | - |
| Employee stock plan | S-8 | 1996-02-23 | - |
| Activist ownership stake (update) | SC 13D/A | 1996-02-21 | - |
| Passive ownership stake (update) | SC 13G/A | 1996-02-14 | - |
| Passive ownership stake | SC 13G | 1996-02-14 | - |
| Passive ownership stake | SC 13G | 1996-02-14 | - |
| Passive ownership stake (update) | SC 13G/A | 1996-02-13 | - |
| Passive ownership stake (update) | SC 13G/A | 1996-02-12 | - |
| Passive ownership stake | SC 13G | 1996-02-07 | - |
| Employee stock plan | S-8 | 1996-02-05 | - |
| Passive ownership stake (update) | SC 13G/A | 1996-02-01 | - |
| Activist ownership stake (update) | SC 13D/A | 1996-01-18 | - |
| Quarterly report | 10-Q | 1996-01-16 | 1995-11-30 |
| 424B4 | - | 1996-01-05 | - |
| S-3/A | - | 1996-01-03 | - |
| S-3/A | - | 1995-12-26 | - |
| 8-A12B | - | 1995-12-18 | - |
| S-3/A | - | 1995-12-18 | - |
| Quarterly report (amended) | 10-Q/A | 1995-12-18 | 1995-08-31 |
| 10-K405/A | - | 1995-12-18 | 1995-05-31 |
| S-3/A | - | 1995-12-12 | - |
| S-3/A | - | 1995-12-05 | - |
