| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 14, 2021 | Jun 10, 2021 | 000-27140 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 11, 2020 | Sep 10, 2020 | 000-27140 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 8, 2020 | Jun 4, 2020 | 000-27140 |
| 3 | Open Document | Open Filing | FORM 3 | Apr 2, 2020 | Mar 26, 2020 | 000-27140 |