| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Dec 21, 2021 | Dec 17, 2021 | 001-35526 | |
| 4/A | Open Document | Open Filing | Dec 21, 2021 | Dec 29, 2020 | 001-35526 | |
| 4 | Open Document | Open Filing | 4 | Dec 30, 2020 | Dec 29, 2020 | 001-35526 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 1, 2020 | Sep 29, 2020 | 001-35526 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 10, 2020 | Aug 7, 2020 | 001-35526 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2020 | Jan 1, 2020 | 001-35526 |