| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2021 | 20 May 2021 | 001-32327 |
| 4/A | Open Document | Open Filing | FORM 4/A | 24 May 2021 | 10 May 2021 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2021 | 10 May 2021 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2020 | 21 May 2020 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Mar 2020 | 16 Mar 2020 | 001-32327 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2019 | 23 May 2019 | 001-32327 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2018 | 31 Oct 2018 | 001-11037 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2018 | 10 May 2018 | 001-32327 |
| 3 | Open Document | Open Filing | FORM 3 | 11 May 2018 | 10 May 2018 | 001-32327 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Apr 2018 | 24 Apr 2018 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2017 | 25 Apr 2017 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2016 | 26 Apr 2016 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2015 | 28 Apr 2015 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2014 | 25 Apr 2014 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2014 | 23 Apr 2014 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2014 | 22 Apr 2014 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2013 | 30 Apr 2013 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Apr 2013 | 25 Apr 2013 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2013 | 23 Apr 2013 | 001-11037 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Apr 2012 | 24 Apr 2012 | 001-11037 |