| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 06 Dec 2021 | 03 Dec 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Nov 2021 | 03 Nov 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Aug 2021 | 02 Aug 2021 | 000-20728 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2021 | 18 Feb 2021 | 000-20728 |