| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Dec 2023 | 14 Dec 2023 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jan 2021 | 11 Jan 2021 | 000-51254 |
| SC 13D/A | Open Document | Open Filing | AMENDED SCHEDULE 13D | 30 Mar 2020 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2020 | 23 Mar 2020 | 000-51254 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jan 2020 | 08 Jan 2020 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2020 | 08 Jan 2020 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jan 2019 | 16 Jan 2019 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2018 | 02 Feb 2018 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2017 | 26 Jan 2017 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2015 | 18 Dec 2015 | 000-51254 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A2 | 28 Jul 2015 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jul 2015 | 17 Jul 2015 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jan 2015 | 18 Dec 2014 | 000-51254 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Feb 2014 | 19 Dec 2013 | 000-51254 |