| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jul 19, 2021 | Jun 14, 2021 | 001-35824 | |
| 4 | Open Document | Open Filing | Jun 29, 2020 | Jul 30, 2019 | 001-35824 | |
| 4 | Open Document | Open Filing | May 15, 2019 | May 12, 2019 | 001-35824 | |
| 3 | Open Document | Open Filing | Aug 9, 2018 | Jul 30, 2018 | 001-35824 |