| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2023 | 16 Feb 2023 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2022 | 22 Feb 2022 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2021 | 18 Feb 2021 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2020 | 20 Feb 2020 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2019 | 22 Feb 2019 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2018 | 21 Feb 2018 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2017 | 22 Feb 2017 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2016 | 23 Feb 2016 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2015 | 25 Feb 2015 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Mar 2014 | 20 Mar 2014 | 001-34580 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2013 | 11 Aug 2011 | 001-34580 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2013 | 12 May 2011 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2013 | 29 May 2013 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2013 | 20 Mar 2013 | 001-34580 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2012 | 20 Mar 2012 | 001-34580 |