| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 14, 2022 | Feb 12, 2022 | 000-23837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 2, 2021 | Nov 30, 2021 | 000-23837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 16, 2021 | Feb 12, 2021 | 000-23837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 2, 2020 | Nov 30, 2020 | 000-23837 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 14, 2020 | Feb 12, 2020 | 000-23837 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 11, 2020 | Feb 3, 2020 | 000-23837 |