| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 1, 2021 | Jun 30, 2021 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2021 | Dec 31, 2020 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 3, 2020 | Jul 31, 2020 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 1, 2020 | Jun 30, 2020 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2020 | Mar 16, 2020 | 001-34855 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2020 | Dec 31, 2019 | 001-34855 |
| 4 | Open Document | Open Filing | Jul 2, 2019 | Jun 30, 2019 | 001-34855 | |
| 4 | Open Document | Open Filing | Apr 1, 2019 | Mar 31, 2019 | 001-34855 | |
| 4 | Open Document | Open Filing | Mar 19, 2019 | Mar 16, 2019 | 001-34855 | |
| 4 | Open Document | Open Filing | Oct 1, 2018 | Sep 30, 2018 | 001-34855 | |
| 4 | Open Document | Open Filing | Jul 3, 2018 | Jun 30, 2018 | 001-34855 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 2, 2018 | May 1, 2018 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 2, 2018 | Mar 31, 2018 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 20, 2018 | Mar 16, 2018 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 2, 2018 | Dec 31, 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 3, 2017 | Sep 30, 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 5, 2017 | Jun 30, 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 18, 2017 | May 16, 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 3, 2017 | Mar 31, 2017 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 3, 2017 | Dec 31, 2016 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 4, 2016 | Sep 30, 2016 | 001-34855 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 1, 2016 | Jun 30, 2016 | 001-34855 |
| 4 | Open Document | Open Filing | Mar 1, 2016 | Mar 1, 2016 | 001-34855 | |
| 4 | Open Document | Open Filing | Oct 2, 2015 | Sep 30, 2015 | 001-34855 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 3, 2015 | Mar 1, 2015 | 001-34855 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Apr 7, 2014 | Apr 2, 2014 | 001-34855 |
| 3 | Open Document | Open Filing | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | Mar 26, 2014 | Mar 26, 2014 | 001-34855 |