| 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 | 03 Dec 2020 | 03 Dec 2020 | 001-32845 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Nov 2020 | 10 Nov 2020 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Dec 2019 | 05 Dec 2019 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2018 | 06 Dec 2018 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Sep 2018 | 12 Sep 2018 | 001-32845 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2017 | 07 Dec 2017 | 001-32845 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2017 | 28 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Feb 2017 | 28 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Feb 2017 | 27 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Feb 2017 | 24 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Feb 2017 | 23 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Feb 2017 | 22 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Feb 2017 | 14 Feb 2017 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Dec 2016 | 01 Dec 2016 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Feb 2016 | 16 Feb 2016 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Dec 2015 | 03 Dec 2015 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 May 2015 | 29 May 2015 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Dec 2014 | 04 Dec 2014 | 001-32845 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Dec 2013 | 05 Dec 2013 | 001-32845 |