| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 28, 2021 | Sep 24, 2021 | 001-39138 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 7, 2020 | Jan 3, 2020 | 001-39138 |
| 3 | Open Document | Open Filing | Nov 19, 2019 | Nov 19, 2019 | 001-39138 |