| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 - | Mar 16, 2022 | Mar 15, 2022 | 000-19860 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 24, 2021 | Sep 22, 2021 | 000-19860 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 25, 2020 | Sep 23, 2020 | 000-19860 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 19, 2019 | Sep 18, 2019 | 000-19860 |
| 4/A | Open Document | Open Filing | FORM 4/A - | Aug 19, 2019 | Sep 26, 2018 | 000-19860 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 28, 2018 | Sep 26, 2018 | 000-19860 |
| 3 | Open Document | Open Filing | FORM 3 - | Sep 28, 2018 | Sep 26, 2018 | 000-19860 |