| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 - | May 25, 2021 | May 25, 2021 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 2, 2021 | Jan 29, 2021 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | Dec 1, 2020 | Nov 27, 2020 | 001-08931 |
| 4/A | Open Document | Open Filing | FORM 4/A - | Oct 6, 2020 | Oct 1, 2020 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | Oct 5, 2020 | Oct 1, 2020 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | May 18, 2020 | May 14, 2020 | 001-08931 |
| 4 | Open Document | Open Filing | FORM 4 - | Apr 29, 2020 | Apr 27, 2020 | 001-08931 |
| 3 | Open Document | Open Filing | FORM 3 - | Apr 29, 2020 | Apr 27, 2020 | 001-08931 |