| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Oct 25, 2022 | Oct 24, 2022 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 12, 2022 | Oct 10, 2022 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 26, 2021 | Oct 22, 2021 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 14, 2021 | Oct 12, 2021 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 30, 2020 | Oct 28, 2020 | 000-06936 |
| 3/A | Open Document | Open Filing | FORM 3/A | Oct 15, 2020 | Dec 10, 2019 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 14, 2020 | Oct 12, 2020 | 000-06936 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 19, 2019 | Dec 10, 2019 | 000-06936 |