| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | May 28, 2021 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 28, 2021 | May 28, 2021 | 001-36137 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | Apr 20, 2021 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 8, 2021 | ||
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2021 | Mar 5, 2021 | 001-36137 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Feb 11, 2021 | ||
| 4 | Open Document | Open Filing | 4 | Jun 5, 2020 | Jun 5, 2020 | 001-36137 |
| SC 13D/A | Open Document | Open Filing | SCEDULE 13D/A | Jun 5, 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jun 4, 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 27, 2020 | 005-91470 | |
| 4 | Open Document | Open Filing | FORM 4 | Feb 11, 2020 | Feb 10, 2020 | 001-36137 |
| SC 13D | Open Document | Open Filing | SC 13D | Mar 23, 2017 | ||
| 4 | Open Document | Open Filing | FORM 4 | Mar 23, 2017 | Feb 16, 2017 | 001-36137 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 15, 2014 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 11, 2014 | Dec 9, 2014 | 001-36137 |