| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 19 Jul 2021 | 14 Jun 2021 | 001-35824 | |
| 4 | Open Document | Open Filing | 29 Jun 2020 | 30 Jul 2019 | 001-35824 | |
| 4 | Open Document | Open Filing | 15 May 2019 | 12 May 2019 | 001-35824 | |
| 3 | Open Document | Open Filing | 09 Aug 2018 | 30 Jul 2018 | 001-35824 |