| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 10 Apr 2023 | 28 Mar 2023 | 000-54830 | |
| 4 | Open Document | Open Filing | 08 Dec 2022 | 17 Nov 2022 | 000-54830 | |
| 4 | Open Document | Open Filing | 08 Dec 2022 | 15 Nov 2022 | 000-54830 | |
| SC 13D | Open Document | Open Filing | 04 May 2021 | |||
| 4 | Open Document | Open Filing | 03 May 2021 | 30 Apr 2021 | 000-54830 | |
| 5 | Open Document | Open Filing | 28 Apr 2021 | 31 Dec 2020 | 000-54830 | |
| 5 | Open Document | Open Filing | 28 Apr 2021 | 31 Dec 2020 | 000-54830 | |
| 5 | Open Document | Open Filing | 28 Apr 2021 | 31 Dec 2020 | 000-54830 | |
| 4 | Open Document | Open Filing | 28 Apr 2021 | 18 Mar 2021 | 000-54830 | |
| 4 | Open Document | Open Filing | 28 Apr 2021 | 16 Feb 2021 | 000-54830 | |
| SC 13D/A | Open Document | Open Filing | 01 Mar 2016 | |||
| SC 13D/A | Open Document | Open Filing | 01 Mar 2016 | |||
| SC 13D | Open Document | Open Filing | 01 Mar 2016 | |||
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Feb 2016 | 14 Dec 2014 | 000-54830 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Feb 2016 | 18 Oct 2013 | 000-54830 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Feb 2016 | 18 Jul 2013 | 000-54830 |