| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 12, 2021 | Nov 9, 2021 | 001-39525 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 18, 2021 | Oct 8, 2021 | 001-39525 |
| D/A | Open Document | Open Filing | Jun 1, 2018 | 021-277048 | ||
| D | Open Document | Open Filing | Dec 27, 2016 | 021-277048 |