| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jan 4, 2022 | Jan 1, 2022 | 001-35182 | |
| 4 | Open Document | Open Filing | Oct 28, 2021 | Oct 27, 2021 | 001-35182 | |
| 4 | Open Document | Open Filing | Oct 13, 2021 | Oct 11, 2021 | 001-35182 | |
| 4 | Open Document | Open Filing | FORM 4 | Apr 16, 2021 | Apr 16, 2021 | 001-38247 |
| 4 | Open Document | Open Filing | Dec 21, 2020 | Dec 17, 2020 | 001-35182 | |
| 4 | Open Document | Open Filing | Jul 6, 2020 | Jul 1, 2020 | 001-35182 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 12, 2020 | Jun 8, 2020 | 001-38247 |
| 4 | Open Document | Open Filing | Jan 14, 2020 | Jan 10, 2020 | 001-35182 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 26, 2018 | Oct 24, 2018 | 001-38247 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 9, 2017 | Nov 7, 2017 | 001-38247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2017 | Mar 16, 2017 | 000-53121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 13, 2017 | Mar 9, 2017 | 001-35182 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 11, 2016 | Jul 7, 2016 | 000-53121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 13, 2016 | Apr 11, 2016 | 000-53121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 13, 2015 | Nov 11, 2015 | 000-53121 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Apr 27, 2015 | Apr 16, 2015 | 000-53121 |
| 4/A | Open Document | Open Filing | Dec 29, 2014 | Dec 20, 2014 | 001-35182 | |
| 4 | Open Document | Open Filing | FORM 4 | Dec 23, 2014 | Dec 20, 2014 | 001-35182 |