| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jun 1, 2022 | May 31, 2021 | 001-11602 | |
| 4 | Open Document | Open Filing | Nov 12, 2021 | Nov 10, 2021 | 001-11602 | |
| 3/A | Open Document | Open Filing | Nov 10, 2021 | May 10, 2020 | 001-11602 | |
| 3 | Open Document | Open Filing | May 14, 2020 | May 13, 2020 | 001-11602 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 29, 2014 | Aug 27, 2014 | 001-11602 |