| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 1, 2021 | Nov 30, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2021 | Mar 4, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | May 18, 2020 | May 14, 2020 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2019 | May 9, 2019 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 27, 2018 | Sep 25, 2018 | 001-06732 |
| 3 | Open Document | Open Filing | FORM 3 | Sep 27, 2018 | Sep 25, 2018 | 001-06732 |