| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Oct 2023 | 18 Oct 2023 | 001-15751 |
| 4 | Open Document | Open Filing | 07 Jun 2023 | 06 Jun 2023 | 001-15751 | |
| 4 | Open Document | Open Filing | FORM 4 - | 02 Jun 2022 | 01 Jun 2022 | 001-15751 |
| 4 | Open Document | Open Filing | FORM 4 - | 20 Apr 2022 | 01 Jun 2021 | 001-15751 |
| 4 | Open Document | Open Filing | FORM 4 - | 16 Jun 2021 | 15 Jun 2021 | 001-15751 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Mar 2018 | 15 Feb 2018 | 001-15751 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Mar 2017 | 02 Mar 2017 | 001-15751 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Aug 2016 | 12 Aug 2016 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Mar 2014 | 24 Mar 2014 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Sep 2012 | 12 Sep 2012 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Sep 2012 | 10 Sep 2012 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2012 | 17 Aug 2012 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Aug 2012 | 17 Aug 2012 | 001-15751 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2012 | 13 Mar 2012 | 001-15751 |