| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 13, 2021 | Aug 12, 2021 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 29, 2021 | Mar 25, 2021 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2021 | Mar 8, 2021 | 001-35074 |
| 4 | Open Document | Open Filing | 4 | Mar 23, 2020 | Mar 23, 2020 | 001-35074 |
| 4 | Open Document | Open Filing | 4 | Mar 11, 2020 | Mar 9, 2020 | 001-35074 |
| 4 | Open Document | Open Filing | 4 | Sep 11, 2019 | Sep 10, 2019 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 27, 2019 | Mar 25, 2019 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 8, 2019 | Mar 7, 2019 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 20, 2018 | Mar 19, 2018 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 9, 2018 | Mar 7, 2018 | 001-35074 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 26, 2018 | Jan 24, 2018 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 10, 2017 | Aug 10, 2017 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 13, 2017 | Jun 12, 2017 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 17, 2017 | Mar 16, 2017 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 8, 2017 | Mar 6, 2017 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 30, 2017 | Jan 30, 2017 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 9, 2016 | Aug 5, 2016 | 001-35074 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 9, 2016 | Feb 14, 2011 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 16, 2016 | Jun 16, 2016 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 23, 2016 | Mar 22, 2016 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2016 | Mar 8, 2016 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 29, 2016 | Jan 28, 2016 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 24, 2015 | Aug 21, 2015 | 001-35074 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 14, 2015 | Aug 13, 2015 | 001-35074 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2015 | Mar 3, 2015 | 001-35074 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2015 | Jan 1, 2015 | 001-35074 |
| 4 | Open Document | Open Filing | FORM 4 | May 30, 2014 | May 28, 2014 | 001-35074 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 21, 2014 | Jan 6, 2014 | 001-35074 |