| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Apr 2022 | 20 Apr 2022 | 001-06544 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Aug 2021 | 19 Aug 2021 | 001-06544 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Apr 2021 | 14 Apr 2021 | 001-06544 |
| 3 | Open Document | Open Filing | FORM 3 | 12 Jan 2021 | 04 Jan 2021 | 001-06544 |