| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 31 Jan 2022 | 31 Jan 2021 | 000-52596 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Jul 2021 | 01 Jul 2021 | 000-52596 |
| 4 | Open Document | Open Filing | 22 Jan 2021 | 20 Jan 2021 | 000-52596 | |
| 4 | Open Document | Open Filing | 4 | 03 Jun 2020 | 03 Jun 2020 | 000-52596 |
| 4 | Open Document | Open Filing | 4 | 01 Apr 2020 | 01 Jan 2020 | 000-52596 |
| 3 | Open Document | Open Filing | FORM 3 | 17 Oct 2018 | 11 Oct 2018 | 000-52596 |