| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 22, 2022 | Jun 21, 2022 | 000-12668 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 21, 2020 | Jan 21, 2020 | 000-12668 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 14, 2019 | Jan 11, 2019 | 000-12668 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 16, 2018 | Jan 12, 2018 | 000-12668 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 27, 2017 | Apr 27, 2017 | 000-12668 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 20, 2017 | Jan 18, 2017 | 000-12668 |