| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Nov 10, 2021 | Nov 10, 2021 | 001-11602 | |
| 4 | Open Document | Open Filing | Oct 26, 2020 | Oct 23, 2020 | 001-11602 | |
| 3 | Open Document | Open Filing | Jul 15, 2020 | Jan 31, 2019 | 001-11602 |