| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2022 | 01 Jun 2022 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2021 | 01 Jun 2021 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2021 | 01 May 2021 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2020 | 01 Jun 2020 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2020 | 01 May 2020 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2019 | 03 Jun 2019 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2019 | 01 May 2019 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2018 | 01 Jun 2018 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2018 | 01 May 2018 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | 03 May 2018 | 01 May 2018 | 001-06003 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Nov 2017 | 24 Nov 2017 | 001-06003 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Nov 2017 | 14 Nov 2017 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2017 | 01 Jun 2017 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2017 | 01 May 2017 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Apr 2017 | 21 Apr 2017 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2016 | 01 Jun 2016 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 May 2016 | 01 May 2016 | 001-34036 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Apr 2016 | 26 Apr 2016 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2015 | 01 Jun 2015 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2015 | 01 May 2015 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2015 | 28 Apr 2015 | 001-06003 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Jul 2014 | 22 Jul 2014 | 001-06263 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2014 | 02 Jun 2014 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2014 | 02 Jun 2014 | 001-06263 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2014 | 01 May 2014 | 001-34036 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2014 | 22 Apr 2014 | 001-06003 |