| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 11 Jun 2021 | 11 Jun 2021 | 001-11255 | |
| 4 | Open Document | Open Filing | 19 Mar 2021 | 19 Mar 2021 | 001-11255 | |
| 4 | Open Document | Open Filing | 19 Mar 2020 | 18 Mar 2020 | 001-11255 | |
| 4 | Open Document | Open Filing | 18 Mar 2020 | 17 Mar 2020 | 001-11255 | |
| 4 | Open Document | Open Filing | 16 Mar 2020 | 16 Mar 2020 | 001-11255 | |
| 4 | Open Document | Open Filing | 05 Mar 2019 | 04 Mar 2019 | 001-11255 | |
| 4 | Open Document | Open Filing | 05 Oct 2018 | 04 Oct 2018 | 001-11255 | |
| 4 | Open Document | Open Filing | 11 Jun 2018 | 01 Mar 2018 | 001-11255 |