| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D | Open Document | Open Filing | 01 Mar 2023 | |||
| 4 | Open Document | Open Filing | 23 Feb 2022 | 19 Dec 2021 | 000-55896 | |
| 4 | Open Document | Open Filing | 02 Apr 2020 | 30 May 2019 | 000-55896 | |
| 3 | Open Document | Open Filing | 15 Feb 2019 | 05 Feb 2019 | 000-55896 |