| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | Apr 10, 2024 | Feb 15, 2023 | 001-40743 | |
| 4 | Open Document | Open Filing | Oct 26, 2023 | Jun 21, 2023 | 001-40743 | |
| 4 | Open Document | Open Filing | Feb 15, 2023 | Feb 15, 2023 | 001-40743 | |
| 4 | Open Document | Open Filing | Oct 26, 2022 | Oct 26, 2022 | 001-40743 | |
| 3 | Open Document | Open Filing | Oct 18, 2021 | Aug 19, 2021 | 001-40743 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 2 TO SCHEDULE 13D | Jan 14, 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 14, 2019 | Jan 14, 2019 | 000-55414 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 1 TO SCHEDULE 13D | Jan 9, 2019 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 9, 2019 | Jan 7, 2019 | 000-55414 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 3 TO SCHEDULE 13D | Oct 23, 2018 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 22, 2018 | Oct 16, 2018 | 000-55414 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 2 TO SCHEDULE 13D | Jul 31, 2018 | ||
| 4 | Open Document | Open Filing | Jul 31, 2018 | Apr 26, 2018 | 000-55414 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO.1 TO SCHEDULE 13D | Mar 22, 2018 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 22, 2018 | Apr 11, 2017 | 000-55414 |
| SC 13D | Open Document | Open Filing | SCHEDULE FILED TO REPORT ACQUISITION OF BENEFICIAL OWNERSHIP | Jan 31, 2017 | ||
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 31, 2017 | Jan 4, 2017 | 000-55414 |