| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 27 May 2022 | 25 May 2022 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2021 | 19 May 2021 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2020 | 20 May 2020 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2019 | 22 May 2019 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2018 | 23 May 2018 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2018 | 23 Feb 2018 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2017 | 03 Mar 2017 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2017 | 23 Feb 2017 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2016 | 24 Feb 2016 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2015 | 19 Feb 2015 | 001-11848 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2014 | 20 Feb 2014 | 001-11848 |