| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Mar 8, 2022 | Mar 4, 2022 | 001-37523 | |
| 4 | Open Document | Open Filing | May 25, 2021 | May 21, 2021 | 001-37523 | |
| 4 | Open Document | Open Filing | Apr 1, 2021 | Mar 31, 2021 | 001-37523 | |
| 4 | Open Document | Open Filing | Nov 17, 2020 | Nov 13, 2020 | 001-37523 | |
| 4/A | Open Document | Open Filing | AMENDMENT TO OWNERSHIP DOCUMENT | Nov 17, 2020 | May 18, 2020 | 001-37523 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 29, 2020 | May 18, 2020 | 001-37523 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 31, 2020 | Mar 13, 2020 | 001-37523 |
| 4 | Open Document | Open Filing | Mar 16, 2020 | Mar 13, 2020 | 001-37523 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 20, 2019 | May 17, 2019 | 001-37523 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 21, 2018 | May 18, 2018 | 001-37523 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 15, 2018 | Feb 2, 2018 | 001-37523 |