| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 07 Apr 2022 | 06 Apr 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Jul 2019 | 22 Jul 2019 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Sep 2017 | 12 Sep 2017 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Feb 2016 | 19 Feb 2016 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Jun 2015 | 23 Jun 2015 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2014 | 15 Dec 2014 | 001-36441 |
| 4/A | Open Document | Open Filing | FORM 4/A | 18 Aug 2014 | 07 May 2014 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2014 | 07 May 2014 | 001-36441 |
| 3 | Open Document | Open Filing | FORM 3 | 06 May 2014 | 06 May 2014 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Dec 2013 | 06 Dec 2013 | 000-52000 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2013 | 06 Dec 2013 | 000-51557 |