| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 7, 2022 | Apr 6, 2022 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 21, 2020 | Sep 10, 2020 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 22, 2019 | Jul 22, 2019 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2016 | Dec 5, 2016 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 25, 2015 | Jun 23, 2015 | 001-36441 |
| 4/A | Open Document | Open Filing | FORM 4/A | Aug 18, 2014 | May 7, 2014 | 001-36441 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2014 | May 7, 2014 | 001-36441 |
| 3 | Open Document | Open Filing | FORM 3 | May 6, 2014 | May 6, 2014 | 001-36441 |