| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2021 | May 20, 2021 | 001-32327 |
| 4/A | Open Document | Open Filing | FORM 4/A | May 24, 2021 | May 10, 2021 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2021 | May 10, 2021 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | May 22, 2020 | May 21, 2020 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2020 | Mar 16, 2020 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2019 | May 23, 2019 | 001-32327 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 1, 2018 | Oct 31, 2018 | 001-11037 |
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2018 | May 10, 2018 | 001-32327 |
| 3 | Open Document | Open Filing | FORM 3 | May 11, 2018 | May 10, 2018 | 001-32327 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 26, 2018 | Apr 24, 2018 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2017 | Apr 25, 2017 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2016 | Apr 26, 2016 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2015 | Apr 28, 2015 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2014 | Apr 25, 2014 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 24, 2014 | Apr 23, 2014 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 23, 2014 | Apr 22, 2014 | 001-11037 |