| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 06 Jul 2021 | 28 Jun 2021 | 000-19301 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Mar 2018 | 27 Feb 2018 | 001-35696 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Feb 2018 | 22 Feb 2018 | 001-35696 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Sep 2017 | 28 Aug 2017 | 001-35696 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Aug 2017 | 28 Aug 2017 | 001-35696 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Feb 2017 | 16 Feb 2017 | 001-35696 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Feb 2017 | 13 Feb 2017 | 001-35696 |
| 5 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 May 2016 | 31 Mar 2016 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Sep 2015 | 03 Sep 2015 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 21 Jul 2015 | 17 Jul 2015 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2015 | 06 May 2015 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Apr 2015 | 07 Apr 2015 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Mar 2015 | 13 Mar 2015 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 15 Aug 2014 | 13 Aug 2014 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 13 Aug 2014 | 11 Aug 2014 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 13 Aug 2014 | 11 Aug 2014 | 001-35696 |
| 5 | Open Document | Open Filing | FORM 5 - | 08 May 2014 | 31 Mar 2014 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 10 Jul 2013 | 08 Jul 2013 | 001-35696 |
| 4 | Open Document | Open Filing | FORM 4 - | 19 Nov 2012 | 16 Nov 2012 | 001-35696 |
| 4 | Open Document | Open Filing | 4 | 02 Nov 2012 | 31 Oct 2012 | 001-35696 |
| 5/A | Open Document | Open Filing | FORM 5/A - | 29 May 2012 | 31 Mar 2012 | 000-52697 |
| 5 | Open Document | Open Filing | FORM 5 - | 03 May 2012 | 31 Mar 2012 | 000-52697 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2012 | 20 Sep 2011 | 000-19301 |