| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 11, 2021 | Aug 9, 2021 | 001-37899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 5, 2021 | Aug 3, 2021 | 001-37899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 23, 2021 | Jul 21, 2021 | 001-37899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 10, 2020 | Apr 8, 2020 | 001-37899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 19, 2020 | Mar 17, 2020 | 001-37899 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 15, 2019 | Feb 13, 2019 | 001-37899 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | Feb 13, 2019 | ||
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 12, 2019 | Feb 1, 2019 | 001-37899 |