| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jun 2021 | 24 Jun 2021 | 001-07865 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jun 2021 | 24 Jun 2021 | 001-07865 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jul 2019 | 25 Jul 2019 | 001-07865 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2018 | 07 Mar 2018 | 001-07865 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jul 2016 | 30 Jun 2016 | 001-07865 |