| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 09 Mar 2022 | 07 Mar 2022 | 001-12882 |
| 4/A | Open Document | Open Filing | AMENDED STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 21 May 2021 | 06 May 2021 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2021 | 06 May 2021 | 001-12882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Sep 2020 | 15 Sep 2020 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Apr 2019 | 11 Apr 2019 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Apr 2018 | 12 Apr 2018 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2017 | 13 Apr 2017 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Apr 2016 | 14 Apr 2016 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2015 | 16 Apr 2015 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2015 | 04 Mar 2015 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Nov 2014 | 05 Nov 2014 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Apr 2014 | 24 Apr 2014 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2013 | 07 Jun 2013 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2013 | 16 May 2013 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Aug 2012 | 26 Jul 2012 | 001-12882 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2012 | 17 May 2012 | 001-12882 |