| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 10, 2021 | May 6, 2021 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2020 | May 7, 2020 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 4, 2019 | Sep 12, 2019 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 16, 2019 | Sep 16, 2019 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 25, 2018 | Apr 23, 2018 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 21, 2017 | Apr 19, 2017 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 25, 2016 | Apr 21, 2016 | 001-37482 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2016 | Dec 31, 2015 | 001-37482 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 2, 2015 | Jul 2, 2015 | 001-37482 |