| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | 12 Dec 2025 | 10 Dec 2025 | 000-50331 |
| 4 | Open Document | Open Filing | 22 Oct 2024 | 15 Oct 2024 | 000-50331 | |
| SC 13D/A | Open Document | Open Filing | 14 Mar 2024 | |||
| 4 | Open Document | Open Filing | 03 Jan 2024 | 28 Nov 2023 | 000-50331 | |
| 4 | Open Document | Open Filing | 10 Nov 2021 | 17 Aug 2021 | 000-50331 | |
| SC 13D/A | Open Document | Open Filing | 06 Jun 2019 | |||
| 4/A | Open Document | Open Filing | 26 Apr 2019 | 21 Dec 2018 | 000-50331 | |
| 3 | Open Document | Open Filing | 14 Sep 2018 | 12 Sep 2018 | 000-50331 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 TO SCHEDULE 13D | 27 Apr 2016 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Apr 2016 | 20 Apr 2016 | 000-22735 |
| SC 13D/A | Open Document | Open Filing | FORM SC 13D/A | 01 Jun 2012 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 May 2012 | 16 Apr 2012 | 000-53334 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 02 Apr 2012 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Mar 2012 | 30 Dec 2011 | 000-53334 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Jan 2012 | 22 Dec 2011 | 000-53334 |