| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2021 | 26 May 2021 | 000-04057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Sep 2020 | 29 Sep 2020 | 001-10324 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2020 | 13 Feb 2020 | 000-04057 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jul 2015 | 06 Jul 2015 | 001-10324 |
| 4 | Open Document | Open Filing | 18 Jul 2014 | 11 Jul 2014 | 001-10324 |