| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 23, 2022 | Dec 21, 2022 | 001-38247 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 16, 2021 | Apr 16, 2021 | 001-38247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 12, 2020 | Jun 8, 2020 | 001-38247 |
| 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/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2017 | Feb 27, 2017 | 000-53121 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2017 | Feb 27, 2017 | 000-53121 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 4, 2016 | Nov 2, 2016 | 000-53121 |
| 3/A | Open Document | Open Filing | FORM 3/A SUBMISSION | Sep 2, 2016 | Jul 12, 2016 | 000-53121 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 14, 2016 | Jul 12, 2016 | 000-53121 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jul 14, 2016 | Jul 12, 2016 | 000-53121 |