| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2022 | 03 Jan 2022 | 000-53548 |
| 4 | Open Document | Open Filing | 18 Nov 2021 | 18 Nov 2021 | 000-53548 | |
| 4 | Open Document | Open Filing | 07 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 | 25 May 2021 | 21 May 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Apr 2021 | 12 Apr 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2021 | 18 Feb 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jan 2021 | 11 Jan 2021 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Nov 2020 | 16 Nov 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Oct 2020 | 01 Oct 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2020 | 01 Jul 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 15 May 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Apr 2020 | 02 Apr 2020 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jan 2020 | 10 Jan 2020 | 000-53548 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Oct 2019 | 01 Oct 2019 | 000-53548 |
| SC 13D/A | Open Document | Open Filing | SC 13DA | 11 Sep 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Sep 2019 | 03 Sep 2019 | 000-53548 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 29 Jul 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Jul 2019 | 23 Jul 2019 | 000-53548 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jul 2019 | 02 Jul 2019 | 000-53548 |
| SC 13D | Open Document | Open Filing | SC 13D | 24 May 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 May 2019 | 15 May 2019 | 000-53548 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Apr 2019 | 01 Apr 2019 | 000-53548 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2019 | 02 Aug 2018 | 000-53548 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jan 2019 | 01 Jul 2018 | 000-53548 |