| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Mar 18, 2022 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | Jan 27, 2022 | ||
| SC 13D/A | Open Document | Open Filing | Jun 21, 2021 | |||
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2021 | May 17, 2021 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | Jun 8, 2021 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2021 | May 17, 2021 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13/D AMENDMENT #8 | Apr 13, 2021 | ||
| SC 13D/A | Open Document | Open Filing | AMENDMENT #8 | Apr 9, 2021 | ||
| SC 13D/A | Open Document | Open Filing | AMENDMENT #7 | Mar 17, 2021 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2021 | Mar 2, 2021 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | 13D AMENDMENT #6 | Dec 16, 2020 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13-D/A | Jul 21, 2020 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 20, 2020 | Jul 17, 2020 | 000-49877 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 20, 2020 | Apr 16, 2020 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | May 8, 2020 | |||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 20, 2020 | Apr 16, 2020 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 3 TO SCHEDULE 13D | Dec 30, 2019 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 26, 2019 | Dec 23, 2019 | 000-49877 |
| SC 13D/A | Open Document | Open Filing | Sep 23, 2019 | |||
| SC 13D/A | Open Document | Open Filing | Sep 20, 2019 | |||
| SC 13D/A | Open Document | Open Filing | Sep 19, 2019 | |||
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 17, 2019 | Jul 5, 2019 | 000-49877 |
| SC 13D | Open Document | Open Filing | Jul 9, 2019 | |||
| SC 13G | Open Document | Open Filing | Jan 25, 2018 | |||
| SC 13G/A | Open Document | Open Filing | Jan 23, 2017 | |||
| SC 13G/A | Open Document | Open Filing | Feb 12, 2016 | |||
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | Jan 16, 2015 | ||
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 12, 2014 | May 26, 2014 | 000-49877 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 7, 2014 | Jan 1, 2014 | 000-49877 |