| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2021 | May 10, 2021 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 12, 2020 | Nov 9, 2020 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2019 | May 9, 2019 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 7, 2018 | May 3, 2018 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 8, 2017 | May 5, 2017 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2016 | May 5, 2016 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 29, 2016 | Feb 25, 2016 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2015 | May 7, 2015 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2014 | May 8, 2014 | 001-33493 |