| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2021 | Nov 12, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 9, 2021 | Nov 5, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 5, 2021 | Nov 3, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 14, 2021 | Sep 10, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 1, 2021 | Aug 30, 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 9, 2020 | Nov 5, 2020 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 15, 2020 | Sep 11, 2020 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 4, 2020 | Sep 2, 2020 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 2, 2020 | Aug 31, 2020 | 000-26841 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 2, 2020 | Jun 25, 2020 | 000-26841 |