| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2022 | 10 May 2022 | 000-50404 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2021 | 11 May 2021 | 000-50404 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2020 | 12 Aug 2020 | 000-50404 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2020 | 12 Aug 2020 | 000-50404 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jun 2019 | 05 Jun 2019 | 001-37589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jun 2018 | 04 Jun 2018 | 001-37589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2017 | 05 Jun 2017 | 001-37589 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Apr 2016 | 11 Apr 2016 | 001-37589 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Apr 2016 | 30 Mar 2016 | 001-37589 |