| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Nov 17, 2021 | Nov 15, 2021 | 001-10962 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Nov 17, 2021 | ||
| 4 | Open Document | Open Filing | FORM 4 | Sep 22, 2021 | Sep 20, 2021 | 001-10962 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Sep 22, 2021 | ||
| SC 13D | Open Document | Open Filing | SC 13D | Mar 17, 2021 | ||
| 3 | Open Document | Open Filing | FORM 3 | Mar 9, 2021 | Mar 8, 2021 | 001-10962 |