| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Aug 2021 | 12 Aug 2021 | 001-39128 |
| 4 | Open Document | Open Filing | 09 Oct 2020 | 07 Oct 2020 | 001-39128 | |
| 4 | Open Document | Open Filing | 15 Nov 2019 | 13 Nov 2019 | 001-39128 | |
| 3 | Open Document | Open Filing | 07 Nov 2019 | 07 Nov 2019 | 001-39128 |