| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2023 | Mar 6, 2023 | 000-55983 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 20, 2023 | Jan 19, 2023 | 000-55983 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 11, 2023 | Jan 9, 2023 | 000-55983 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 30, 2022 | Aug 22, 2022 | 000-55983 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 11, 2022 | Aug 10, 2022 | 000-55983 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2022 | May 5, 2022 | 000-55983 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 9, 2022 | Feb 7, 2022 | 000-55983 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 25, 2021 | May 21, 2021 | 000-55983 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 22, 2021 | Feb 19, 2021 | 000-55983 |
| 4 | Open Document | Open Filing | 4 | Nov 5, 2020 | Nov 4, 2020 | 000-55983 |
| 4 | Open Document | Open Filing | 4 | Jul 31, 2020 | Jul 30, 2020 | 000-55983 |
| 4 | Open Document | Open Filing | 4 | Feb 7, 2020 | Feb 5, 2020 | 000-55983 |
| 4 | Open Document | Open Filing | 4 | Aug 5, 2019 | Jun 3, 2019 | 000-55983 |