| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Nov 2021 | 04 Nov 2021 | 001-34246 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 06 Feb 2019 | ||
| 3 | Open Document | Open Filing | 05 Feb 2019 | 04 Feb 2019 | 001-34246 |