| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2023 | 22 Feb 2021 | 000-04197 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 24 Jan 2023 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2021 | 10 Dec 2021 | 000-04197 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2021 | 29 Nov 2021 | 000-04197 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2021 | 22 Feb 2021 | 000-04197 |