| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 11, 2021 | Jun 9, 2021 | 333-255642 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2021 | May 21, 2021 | 333-255642 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 26, 2017 | Apr 25, 2017 | 000-52024 |
| 4 | Open Document | Open Filing | FORM 4 - | May 3, 2017 | Feb 21, 2017 | 000-52024 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 20, 2016 | Dec 16, 2016 | 000-52024 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 16, 2016 | Dec 12, 2016 | 000-52024 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 14, 2015 | Aug 10, 2015 | 000-52024 |
| 4 | Open Document | Open Filing | Mar 31, 2015 | Feb 25, 2015 | 000-52024 | |
| 4 | Open Document | Open Filing | May 16, 2014 | May 14, 2014 | 000-52024 | |
| 4 | Open Document | Open Filing | May 15, 2014 | May 13, 2014 | 000-52024 |