| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Dec 2022 | 01 Dec 2022 | 001-35737 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Feb 2020 | 03 Feb 2020 | 001-35737 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 May 2018 | 28 May 2018 | 001-35737 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Apr 2015 | 16 Apr 2012 | 001-35737 |