| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 18 May 2021 | 17 May 2021 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Feb 2021 | 19 Feb 2021 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Nov 2020 | 04 Nov 2020 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 19 May 2020 | 15 May 2020 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Oct 2019 | 14 Oct 2019 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 21 May 2019 | 17 May 2019 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 30 May 2018 | 26 May 2018 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2018 | 18 May 2018 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jun 2017 | 26 May 2017 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2017 | 20 May 2017 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2017 | 15 May 2017 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2016 | 20 May 2016 | 000-50307 |
| 4 | Open Document | Open Filing | FORM 4 | 03 May 2016 | 02 May 2016 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2015 | 18 May 2015 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2015 | 01 May 2015 | 000-50307 |
| 4 | Open Document | Open Filing | 4 | 29 Apr 2015 | 27 Apr 2015 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jan 2015 | 12 Jan 2015 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2014 | 06 Aug 2014 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 May 2014 | 22 May 2014 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2014 | 16 May 2014 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jan 2014 | 13 Jan 2014 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Oct 2013 | 28 Oct 2013 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Aug 2013 | 06 Aug 2013 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2013 | 25 Jun 2013 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2013 | 22 May 2013 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2013 | 06 May 2013 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jan 2013 | 14 Jan 2013 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2012 | 12 Dec 2012 | 001-31614 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2012 | 21 May 2012 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Apr 2012 | 18 Apr 2012 | 000-50307 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jan 2012 | 09 Jan 2012 | 001-31614 |