| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2022 | May 18, 2022 | 001-34582 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2021 | Jun 3, 2021 | 001-34582 |
| 4 | Open Document | Open Filing | FORM 4 | May 27, 2021 | May 25, 2021 | 001-34582 |
| 4 | Open Document | Open Filing | FORM 4 | May 22, 2020 | May 21, 2020 | 001-34582 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2020 | May 20, 2020 | 001-34582 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 26, 2019 | Aug 23, 2019 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2019 | May 22, 2019 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 2, 2018 | Oct 31, 2018 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2018 | May 14, 2018 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2017 | May 17, 2017 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2016 | May 18, 2016 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 16, 2016 | May 13, 2016 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 16, 2016 | Feb 11, 2016 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 14, 2015 | Sep 11, 2015 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2015 | May 20, 2015 | 001-34582 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2014 | May 21, 2014 | 001-34582 |