| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 21 Sep 2021 | 17 Sep 2021 | 001-32491 | |
| 4 | Open Document | Open Filing | 25 Sep 2020 | 24 Sep 2020 | 001-32491 | |
| 4 | Open Document | Open Filing | 17 Apr 2020 | 16 Apr 2020 | 001-32491 | |
| 4 | Open Document | Open Filing | 15 Apr 2020 | 13 Apr 2020 | 001-32491 | |
| 4 | Open Document | Open Filing | 22 Apr 2019 | 18 Apr 2019 | 001-32491 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Oct 2015 | 09 Oct 2015 | 001-32491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Apr 2015 | 06 Apr 2015 | 001-32491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Apr 2014 | 02 Apr 2014 | 001-32491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jul 2012 | 02 Jul 2012 | 001-32491 |