| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jul 22, 2022 | ||
| 4 | Open Document | Open Filing | FORM 4 | Jul 21, 2022 | Jul 15, 2022 | 000-55965 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2019 | May 30, 2019 | 000-55965 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | May 21, 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2019 | May 17, 2019 | 000-55965 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jul 24, 2018 | ||
| 4 | Open Document | Open Filing | FORM 4 | Jul 11, 2018 | Feb 28, 2017 | 333-196663 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2017 | Apr 20, 2017 | 333-196663 |
| SC 13D | Open Document | Open Filing | SC 13D | Oct 14, 2016 | ||
| 3 | Open Document | Open Filing | FORM 3 | Oct 14, 2016 | Oct 3, 2016 | 333-196663 |