| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2023 | Sep 23, 2021 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 21, 2023 | Aug 17, 2023 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 21, 2023 | Sep 23, 2022 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | May 27, 2021 | Jan 1, 2019 | 000-55908 |
| 3 | Open Document | Open Filing | FORM 3 | Feb 14, 2019 | Dec 17, 2018 | 000-55908 |