| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 23, 2021 | Dec 23, 2021 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2021 | Dec 10, 2021 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2021 | May 18, 2021 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2020 | Dec 10, 2020 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2019 | Dec 10, 2019 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2018 | Dec 12, 2018 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2017 | Dec 14, 2017 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2017 | Dec 8, 2017 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 23, 2017 | Aug 21, 2017 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 11, 2017 | Jul 7, 2017 | 001-12719 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2016 | Dec 8, 2016 | 001-12719 |
| 3 | Open Document | Open Filing | FORM 3 | Oct 21, 2016 | Oct 12, 2016 | 001-12719 |