| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 19, 2023 | May 17, 2023 | 000-13257 | |
| 4 | Open Document | Open Filing | May 16, 2023 | May 12, 2023 | 000-13257 | |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 21, 2022 | Mar 17, 2022 | 000-13257 |
| 4 | Open Document | Open Filing | FORM 4 - | Dec 7, 2020 | Nov 19, 2020 | 000-13257 |
| 4 | Open Document | Open Filing | FORM 4 - | May 10, 2018 | May 9, 2018 | 000-13257 |
| 3 | Open Document | Open Filing | FORM 3 - | May 10, 2018 | May 9, 2018 | 000-13257 |