| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 12 Oct 2021 | 01 Oct 2021 | 000-53548 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jul 2021 | 02 Jul 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Jan 2021 | 22 Jan 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Oct 2020 | 16 Oct 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2020 | 09 Jul 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2020 | 03 Apr 2020 | 000-53548 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2020 | 03 Mar 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2020 | 03 Mar 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jan 2020 | 13 Jan 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Oct 2019 | 10 Oct 2019 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2019 | 28 Jan 2019 | 000-53548 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2019 | 28 Jan 2019 | 000-53548 |