| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Nov 22, 2021 | Nov 18, 2021 | 001-34487 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2021 | Mar 31, 2021 | 001-34487 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2019 | Dec 2, 2019 | 001-34487 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 28, 2018 | Aug 8, 2018 | 001-34487 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 14, 2018 | Aug 8, 2018 | 001-34487 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 2, 2017 | Oct 26, 2017 | 001-34487 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 24, 2015 | Nov 20, 2015 | 001-34487 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 25, 2015 | Aug 12, 2015 | 001-34487 |
| 4 | Open Document | Open Filing | FORM 4 - | Apr 10, 2015 | Apr 8, 2015 | 001-34487 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 3, 2014 | May 5, 2014 | 001-34487 |