| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 23 Feb 2023 | 21 Feb 2023 | 000-23406 | |
| 4 | Open Document | Open Filing | 07 Feb 2022 | 03 Feb 2022 | 000-23406 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Feb 2021 | 10 Feb 2021 | 000-23406 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 May 2020 | 26 May 2020 | 000-23406 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2020 | 18 Feb 2020 | 000-23406 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Oct 2019 | 15 Oct 2019 | 000-23406 |