| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 23, 2022 | Mar 21, 2022 | 001-39794 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 6, 2021 | Dec 6, 2021 | 001-41127 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 10, 2020 | Dec 10, 2020 | 001-39794 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 24, 2015 | Jun 22, 2015 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2015 | Feb 27, 2015 | 001-16427 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2015 | Jan 28, 2015 | 001-16427 |