| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 3, 2022 | Jan 3, 2022 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 4, 2021 | Jan 4, 2021 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 23, 2020 | Apr 22, 2020 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 16, 2020 | Apr 15, 2020 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 9, 2020 | Apr 8, 2020 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 2, 2020 | Apr 1, 2020 | 000-50658 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 18, 2019 | Dec 16, 2019 | 000-50658 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Dec 18, 2019 | Dec 16, 2019 | 000-50658 |