| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jun 2021 | 27 Jun 2021 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2020 | 28 Nov 2020 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2020 | 30 Oct 2020 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2020 | 21 Feb 2020 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2019 | 30 Nov 2019 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Oct 2019 | 29 Oct 2019 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2019 | 17 May 2019 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2019 | 21 Feb 2019 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2018 | 30 Oct 2018 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2018 | 21 Feb 2018 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2017 | 21 Feb 2017 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Oct 2016 | 26 Oct 2016 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jul 2015 | 22 Jul 2015 | 001-10542 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jul 2014 | 22 Jul 2014 | 001-10542 |