| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | FORM SC 13D/A | May 31, 2022 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2022 | May 20, 2022 | 000-54416 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 25, 2019 | Mar 22, 2019 | 000-54416 |
| SC 13D/A | Open Document | Open Filing | Apr 2, 2018 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 26, 2018 | Mar 23, 2018 | 000-54416 |
| 3 | Open Document | Open Filing | FORM 3 | Jan 23, 2018 | Oct 10, 2017 | 000-54416 |
| SC 13D | Open Document | Open Filing | Jan 23, 2018 |