| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2023 | 17 Mar 2023 | 001-41542 |
| SC 13D/A | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2022 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Sep 2021 | 16 Sep 2021 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Nov 2020 | 17 Nov 2020 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Dec 2019 | 23 Dec 2019 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Dec 2019 | 02 Dec 2019 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Nov 2019 | 25 Nov 2019 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2017 | 29 Nov 2017 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2017 | 18 May 2017 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2016 | 06 Dec 2016 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2016 | 11 Nov 2016 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Oct 2016 | 30 Sep 2016 | 000-21816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Sep 2016 | 20 Sep 2016 | 000-21816 |