| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 05 Jan 2022 | 03 Jan 2022 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2021 | 03 Jun 2021 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2021 | 04 Jan 2021 | 001-07891 |
| 4 | Open Document | Open Filing | 30 Oct 2020 | 30 Oct 2020 | 001-37904 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Oct 2020 | 09 Oct 2020 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2020 | 02 Jan 2020 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Dec 2019 | 06 Dec 2019 | 001-07891 |
| 4 | Open Document | Open Filing | 27 Feb 2019 | 25 Feb 2019 | 001-37904 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2019 | 02 Jan 2019 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2018 | 05 Jul 2018 | 001-07891 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Feb 2018 | 26 Feb 2018 | 001-37904 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2018 | 02 Jan 2018 | 001-07891 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Nov 2017 | 03 Nov 2017 | 001-37904 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Oct 2017 | 03 Oct 2017 | 001-37904 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Sep 2017 | 21 Sep 2017 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jun 2017 | 19 Jun 2017 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2017 | 31 Mar 2017 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2017 | 01 Mar 2017 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2017 | 01 Jan 2017 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2016 | 08 Dec 2016 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Sep 2016 | 28 Sep 2016 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2016 | 29 Jun 2016 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2016 | 07 Jun 2016 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2016 | 02 Mar 2016 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2016 | 01 Jan 2016 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2015 | 03 Dec 2015 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2015 | 30 Nov 2015 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Sep 2015 | 29 Jun 2015 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2015 | 02 Jun 2015 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2015 | 01 Jan 2015 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Dec 2014 | 22 Dec 2014 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Dec 2014 | 04 Dec 2014 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jun 2014 | 26 Jun 2014 | 001-08649 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2014 | 17 Jan 2014 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jan 2014 | 15 Jan 2014 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2014 | 01 Jan 2014 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Dec 2013 | 05 Dec 2013 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Sep 2013 | 24 Sep 2013 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2013 | 31 Dec 2012 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2013 | 26 Dec 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2012 | 20 Dec 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2012 | 11 Dec 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Sep 2012 | 20 Sep 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jul 2012 | 30 Jun 2012 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2012 | 08 Jun 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2012 | 23 Mar 2012 | 001-08649 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2012 | 31 Dec 2011 | 001-07891 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2012 | 29 Dec 2011 | 001-08649 |