| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 10 Dec 2021 | 08 Dec 2021 | 001-11460 |
| 3 | Open Document | Open Filing | FORM 3 | 26 May 2021 | 06 May 2021 | 001-11460 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Apr 2018 | 30 Mar 2018 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jan 2018 | 31 Dec 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Oct 2017 | 29 Sep 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Jul 2017 | 07 Jul 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Jul 2017 | 30 Jun 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Jun 2017 | 26 Jun 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Apr 2017 | 31 Mar 2017 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jan 2017 | 31 Dec 2016 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Oct 2016 | 03 Oct 2016 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Jul 2016 | 18 Jul 2016 | 001-37823 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 May 2016 | 29 Apr 2016 | 000-54801 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Apr 2015 | 31 Mar 2015 | 000-54801 |