| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jun 2021 | 07 Jun 2021 | 001-36509 |
| 4 | Open Document | Open Filing | 4 | 18 Aug 2020 | 14 Aug 2020 | 001-36509 |
| 4 | Open Document | Open Filing | 4 | 09 Jun 2020 | 08 Jun 2020 | 001-36509 |
| 3 | Open Document | Open Filing | 3 | 09 Jun 2020 | 08 Jun 2020 | 001-36509 |