| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 8, 2021 | Dec 6, 2021 | 001-16317 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 11, 2020 | Dec 1, 2020 | 001-16317 |
| SC 13G | Open Document | Open Filing | SC 13G | Nov 6, 2020 |