| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Dec 21, 2022 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A (AMENDMENT NO. 6) | Apr 1, 2022 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 31, 2022 | Mar 29, 2022 | 000-53166 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Feb 22, 2022 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Nov 8, 2019 | ||
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Nov 8, 2019 | Sep 27, 2019 | 000-53166 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Nov 8, 2019 | Sep 27, 2019 | 000-53166 |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Oct 7, 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 2, 2019 | Sep 30, 2019 | 000-53166 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 1, 2019 | Sep 27, 2019 | 000-53166 |
| D | Open Document | Open Filing | Aug 6, 2019 | 021-345849 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Aug 5, 2019 | ||
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 TO SCHEDULE 13D | Aug 24, 2018 | ||
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jul 2, 2018 | Jun 22, 2018 | 000-53166 |
| SC 13D | Open Document | Open Filing | SC 13D | Jun 29, 2018 | ||
| D | Open Document | Open Filing | Apr 24, 2018 | 021-310833 |