| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Apr 4, 2022 | Mar 31, 2022 | 000-24649 | |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 11, 2022 | Feb 9, 2022 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 4, 2022 | Dec 31, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Oct 4, 2021 | Sep 30, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Jul 1, 2021 | Jun 30, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | May 21, 2021 | May 19, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Apr 2, 2021 | Mar 31, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Feb 9, 2021 | Feb 8, 2021 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 4, 2021 | Dec 31, 2020 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Oct 2, 2020 | Sep 30, 2020 | 000-24649 |
| 4 | Open Document | Open Filing | FORM 4 - | Jul 2, 2020 | Jun 30, 2020 | 000-24649 |
| 3 | Open Document | Open Filing | FORM 3 - | May 1, 2020 | Apr 23, 2020 | 000-24649 |