| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | Nov 15, 2021 | Sep 20, 2021 | 001-14116 | |
| 4 | Open Document | Open Filing | Nov 15, 2021 | Nov 11, 2021 | 001-14116 | |
| 4 | Open Document | Open Filing | Sep 21, 2021 | Sep 20, 2021 | 001-14116 | |
| 4 | Open Document | Open Filing | Jun 4, 2021 | Jun 2, 2021 | 001-14116 | |
| 4 | Open Document | Open Filing | Dec 9, 2020 | Dec 7, 2020 | 001-14116 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 3, 2020 | Jun 1, 2020 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 29, 2020 | Apr 27, 2020 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 12, 2019 | Aug 8, 2019 | 001-14116 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 11, 2018 | May 9, 2018 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 1, 2018 | Jan 30, 2018 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 1, 2017 | Jul 28, 2017 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2017 | May 17, 2017 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2017 | Mar 8, 2017 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2017 | Feb 24, 2017 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 26, 2016 | Oct 24, 2016 | 001-14116 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 16, 2016 | May 12, 2016 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 11, 2015 | Aug 7, 2015 | 001-14116 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2015 | May 19, 2015 | 001-14116 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2015 | May 19, 2015 | 001-14116 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2015 | May 19, 2015 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2015 | Apr 29, 2015 | 001-14116 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 30, 2014 | Jul 28, 2014 | 001-14116 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 9, 2014 | Apr 7, 2014 | 001-14116 |