| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 18, 2022 | Aug 16, 2022 | 001-32472 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 20, 2022 | Jan 18, 2022 | 001-32472 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 17, 2021 | Aug 16, 2021 | 001-32472 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 2, 2021 | Jun 1, 2021 | 001-32472 |
| 4 | Open Document | Open Filing | 4 | Aug 11, 2020 | Aug 10, 2020 | 001-32472 |
| 4 | Open Document | Open Filing | 4 | Feb 19, 2019 | Feb 15, 2019 | 001-32472 |
| 4 | Open Document | Open Filing | 4 | Jun 1, 2018 | May 30, 2018 | 001-32472 |
| 4 | Open Document | Open Filing | 4 | Aug 11, 2017 | Aug 10, 2017 | 001-32472 |
| 4 | Open Document | Open Filing | 4 | May 16, 2016 | Feb 15, 2016 | 001-32472 |
| 4 | Open Document | Open Filing | FORM 4 - | Aug 4, 2014 | Jul 31, 2014 | 001-32472 |