| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 15 Apr 2022 | 13 Apr 2022 | 001-34816 | |
| 4 | Open Document | Open Filing | 12 May 2020 | 07 May 2020 | 001-34816 | |
| 4 | Open Document | Open Filing | 17 May 2019 | 15 May 2019 | 001-34816 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2018 | 12 Feb 2018 | 001-34816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jan 2018 | 09 Jan 2018 | 001-34816 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2017 | 13 Feb 2017 | 001-34816 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Feb 2016 | 08 Feb 2016 | 001-34816 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 May 2015 | 07 May 2015 | 001-34816 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Feb 2014 | 12 Feb 2014 | 001-34816 |