| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 22, 2021 | Jan 31, 2021 | 811-23289 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 25, 2020 | Jun 25, 2020 | 811-23491 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 24, 2019 | May 24, 2019 | 811-23358 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 1, 2017 | Dec 1, 2017 | 811-23289 |