| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2021 | Sep 2, 2021 | 001-38747 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2020 | Sep 3, 2020 | 001-38747 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 23, 2019 | Dec 20, 2019 | 001-38747 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 6, 2019 | Sep 5, 2019 | 001-38747 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 20, 2018 | Dec 20, 2018 | 001-38747 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 10, 2018 | Sep 6, 2018 | 000-23246 |
| 5 | Open Document | Open Filing | FORM 5 | Jun 11, 2018 | Apr 28, 2018 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 22, 2017 | Dec 22, 2017 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 2, 2017 | Oct 2, 2017 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 1, 2017 | Aug 31, 2017 | 000-23246 |
| 4/A | Open Document | Open Filing | FORM 4/A | Feb 1, 2017 | Dec 19, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 17, 2017 | Jan 17, 2017 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 13, 2017 | Jan 12, 2017 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2017 | Dec 30, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 30, 2016 | Dec 28, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 28, 2016 | Dec 27, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 27, 2016 | Dec 23, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 22, 2016 | Dec 21, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2016 | Dec 19, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2016 | Dec 13, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 2, 2016 | Sep 1, 2016 | 000-23246 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2015 | Sep 3, 2015 | 000-23246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 22, 2014 | Dec 18, 2014 | 000-23246 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 8, 2014 | Sep 4, 2014 | 000-23246 |