| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 27 May 2022 | 26 May 2022 | 000-26719 | |
| 4 | Open Document | Open Filing | 03 Jun 2021 | 01 Jun 2021 | 000-26719 | |
| 4 | Open Document | Open Filing | 03 Jun 2020 | 01 Jun 2020 | 000-26719 | |
| 4 | Open Document | Open Filing | 28 May 2019 | 23 May 2019 | 000-26719 | |
| 4 | Open Document | Open Filing | 29 May 2018 | 24 May 2018 | 000-26719 | |
| 4 | Open Document | Open Filing | 26 Jun 2017 | 25 May 2017 | 000-26719 | |
| 4 | Open Document | Open Filing | 16 Dec 2016 | 06 Dec 2016 | 000-26719 | |
| 4 | Open Document | Open Filing | 08 Jun 2016 | 19 Feb 2016 | 000-26719 | |
| 4/A | Open Document | Open Filing | 15 Jun 2015 | 28 May 2015 | 000-26719 | |
| 4 | Open Document | Open Filing | 01 Jun 2015 | 28 May 2015 | 000-26719 | |
| 4 | Open Document | Open Filing | 06 Jan 2015 | 02 Jan 2015 | 000-26719 | |
| 4 | Open Document | Open Filing | 30 Jun 2014 | 26 Jun 2014 | 000-26719 | |
| 4 | Open Document | Open Filing | 03 Jun 2014 | 01 Jun 2014 | 000-26719 | |
| 4 | Open Document | Open Filing | FORM 4 | 03 Jun 2014 | 01 Jun 2014 | 000-14209 |
| 3 | Open Document | Open Filing | 03 Jun 2014 | 01 Jun 2014 | 000-26719 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2013 | 14 Jun 2013 | 000-14209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2013 | 22 May 2013 | 000-14209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2013 | 22 Apr 2013 | 000-14209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2012 | 29 Jun 2012 | 000-14209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jun 2012 | 27 Jun 2012 | 000-14209 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2012 | 30 Apr 2012 | 000-14209 |