| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 02 Jun 2021 | 01 Jun 2021 | 000-31127 | |
| 4 | Open Document | Open Filing | 03 Mar 2021 | 01 Mar 2021 | 000-31127 | |
| 4 | Open Document | Open Filing | 03 Jun 2020 | 01 Jun 2020 | 000-31127 | |
| 4 | Open Document | Open Filing | 03 Mar 2020 | 01 Mar 2020 | 000-31127 | |
| 4 | Open Document | Open Filing | 05 Mar 2019 | 01 Mar 2019 | 000-31127 | |
| 3 | Open Document | Open Filing | 20 Feb 2019 | 18 Feb 2019 | 000-31127 |