| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2021 | 01 Nov 2021 | 000-12508 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2021 | 01 Apr 2021 | 000-12508 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2021 | 19 Mar 2021 | 000-12508 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2021 | 21 Dec 2020 | 000-12508 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Dec 2020 | 21 Dec 2020 | 000-12508 |