| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2021 | May 18, 2021 | 001-39834 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 20, 2021 | May 18, 2021 | 001-39834 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2021 | Apr 30, 2021 | 001-39834 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 28, 2021 | Dec 30, 2020 | 001-39834 |