| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | 02 Feb 2022 | 31 Dec 2021 | 001-14854 | |
| 4 | Open Document | Open Filing | 02 Jun 2020 | 29 May 2020 | 001-14854 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jun 2019 | 31 May 2019 | 001-14854 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 May 2018 | 25 May 2018 | 001-14854 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 May 2017 | 26 May 2017 | 001-14854 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 May 2017 | 28 Apr 2017 | 001-14854 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 May 2016 | 17 May 2016 | 001-14854 |
| 4 | Open Document | Open Filing | 19 May 2015 | 19 May 2015 | 001-14854 | |
| 4 | Open Document | Open Filing | 04 Feb 2015 | 14 Jan 2015 | 001-14854 | |
| 5 | Open Document | Open Filing | 04 Feb 2015 | 31 Dec 2014 | 001-14854 | |
| 4 | Open Document | Open Filing | 4 | 19 May 2014 | 13 May 2014 | 001-14854 |
| 5 | Open Document | Open Filing | 06 Feb 2014 | 31 Dec 2013 | 001-14854 |