| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 8, 2022 | Jun 8, 2022 | 001-40402 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 22, 2022 | Apr 22, 2022 | 001-40402 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 21, 2022 | Apr 19, 2022 | 001-40402 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 1, 2021 | Jul 1, 2021 | 001-40402 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 18, 2021 | May 18, 2021 | 001-40402 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 17, 2021 | May 13, 2021 | 001-40402 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 13, 2021 | May 13, 2021 | 001-40402 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 31, 2014 | Dec 29, 2014 | 000-30392 |