| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2021 | May 10, 2021 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 24, 2020 | Nov 20, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 28, 2020 | Aug 27, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 27, 2020 | Aug 25, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2020 | Aug 21, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | May 22, 2020 | May 20, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2020 | May 18, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2020 | Mar 27, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 18, 2020 | Feb 13, 2020 | 001-33383 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 23, 2020 | Jan 21, 2020 | 001-33383 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2017 | Feb 14, 2013 | 001-33383 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 24, 2017 | Aug 17, 2017 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 21, 2017 | Aug 17, 2017 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2017 | May 19, 2017 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2017 | Mar 1, 2017 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2017 | Feb 17, 2017 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 15, 2016 | Nov 14, 2016 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 25, 2016 | May 23, 2016 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2016 | Mar 8, 2016 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 29, 2016 | Feb 25, 2016 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 9, 2016 | Feb 5, 2016 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 20, 2015 | May 18, 2015 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2015 | Feb 17, 2015 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 13, 2015 | Feb 11, 2015 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2014 | Nov 6, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 6, 2014 | Nov 5, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 22, 2014 | Aug 20, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2014 | May 12, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2014 | May 8, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2014 | Feb 13, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2014 | Feb 7, 2014 | 001-33383 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2014 | Feb 3, 2014 | 001-33383 |