| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Nov 3, 2021 | Oct 5, 2021 | 001-07151 | |
| 4 | Open Document | Open Filing | Sep 23, 2021 | Sep 21, 2021 | 001-07151 | |
| 4 | Open Document | Open Filing | Oct 7, 2020 | Oct 5, 2020 | 001-07151 | |
| 3 | Open Document | Open Filing | Oct 7, 2020 | Oct 5, 2020 | 001-07151 |