| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2025 | 19 May 2025 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2024 | 08 May 2024 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2023 | 11 May 2023 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2022 | 12 May 2022 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2021 | 13 May 2021 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2020 | 02 Jun 2020 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2020 | 20 May 2020 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 22 May 2019 | 000-21238 |
| 4 | Open Document | Open Filing | FORM 4 | 03 May 2019 | 01 May 2019 | 001-38735 |
| 3 | Open Document | Open Filing | FORM 3 | 09 Nov 2018 | 09 Nov 2018 | 001-38735 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2018 | 23 May 2018 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 May 2017 | 24 May 2017 | 000-21238 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Mar 2017 | 17 Mar 2017 | 001-06732 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2016 | 18 May 2016 | 000-21238 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2016 | 05 May 2016 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Mar 2016 | 17 Mar 2016 | 001-06732 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2015 | 08 Jun 2015 | 000-21238 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2015 | 20 May 2015 | 000-21238 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2015 | 19 May 2015 | 000-21238 |
| 4 | Open Document | Open Filing | FORM 4 | 08 May 2015 | 07 May 2015 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Apr 2015 | 06 Apr 2015 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Mar 2015 | 17 Mar 2015 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Mar 2015 | 05 Mar 2015 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Mar 2014 | 17 Mar 2014 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2014 | 26 Feb 2014 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Aug 2013 | 05 Aug 2013 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Mar 2013 | 18 Mar 2013 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Mar 2013 | 07 Mar 2013 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Feb 2013 | 25 Feb 2013 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jan 2013 | 08 Jan 2013 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Sep 2012 | 04 Sep 2012 | 001-06732 |
| 4 | Open Document | Open Filing | MAIN DOCUMENT DESCRIPTION | 20 Mar 2012 | 17 Mar 2012 | 001-06732 |
| 4 | Open Document | Open Filing | MAIN DOCUMENT DESCRIPTION | 05 Mar 2012 | 01 Mar 2012 | 001-06732 |