| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 19, 2022 | Sep 16, 2022 | 811-22795 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 14, 2018 | Dec 13, 2018 | 811-22795 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 4, 2016 | Dec 31, 2015 | 811-22795 |