| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Nov 2, 2021 | Nov 1, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Mar 24, 2021 | Mar 22, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 5, 2020 | Nov 1, 2019 | 001-08061 |