| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 11 Feb 2022 | 09 Feb 2022 | 000-51018 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2021 | 21 May 2021 | 000-51018 |
| 4 | Open Document | Open Filing | 09 Feb 2021 | 09 Feb 2021 | 000-51018 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2020 | 20 May 2020 | 000-51018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2020 | 10 Feb 2020 | 000-51018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2020 | 04 Feb 2020 | 000-51018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2019 | 11 Feb 2019 | 000-51018 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2019 | 04 Feb 2019 | 000-51018 |