| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 26 May 2022 | 24 May 2022 | 000-18592 | |
| 4 | Open Document | Open Filing | 21 Jun 2021 | 17 Jun 2021 | 000-18592 | |
| 4 | Open Document | Open Filing | 24 Jun 2020 | 22 Jun 2020 | 000-18592 | |
| 3 | Open Document | Open Filing | 24 Jun 2020 | 22 Jun 2020 | 000-18592 |