| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 26 May 2021 | 25 May 2021 | 001-32845 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jun 2020 | 09 Jun 2020 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Feb 2020 | 11 Feb 2020 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2019 | 11 Jun 2019 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2019 | 12 Feb 2019 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2018 | 12 Jun 2018 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Feb 2017 | 07 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jun 2016 | 08 Jun 2016 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Jul 2015 | 14 Nov 2014 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Jun 2015 | 15 Jun 2015 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Jan 2015 | 22 Jan 2015 | 001-32845 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2014 | 04 Aug 2014 | 001-32845 |