| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 08 Dec 2021 | 29 Oct 2021 | 001-10986 | |
| 4 | Open Document | Open Filing | 02 Jul 2021 | 30 Jun 2021 | 001-10986 | |
| 4 | Open Document | Open Filing | 02 Jul 2020 | 30 Jun 2020 | 001-10986 | |
| 4 | Open Document | Open Filing | 20 May 2020 | 14 May 2020 | 001-10986 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Nov 2019 | 22 Nov 2019 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 27 Aug 2018 | 27 Aug 2018 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 02 Aug 2018 | 01 Aug 2018 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 26 Jul 2018 | 24 Jul 2018 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 25 Jul 2018 | 23 Jul 2018 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 03 Nov 2017 | 02 Nov 2017 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 08 Dec 2016 | 06 Dec 2016 | 001-10986 |
| 4/A | Open Document | Open Filing | 4/A | 23 Nov 2016 | 09 Sep 2014 | 001-10986 |
| 4/A | Open Document | Open Filing | 4/A | 18 Nov 2016 | 09 Sep 2014 | 001-10986 |
| 4 | Open Document | Open Filing | 4 | 07 Nov 2016 | 03 Nov 2016 | 001-10986 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Aug 2015 | 18 Aug 2015 | 001-10986 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 May 2015 | 14 May 2015 | 001-10986 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Sep 2014 | 09 Sep 2014 | 001-10986 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Jun 2014 | 13 Jun 2014 | 001-10986 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Sep 2013 | 10 Sep 2013 | 001-10986 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 May 2013 | 13 May 2013 | 001-10986 |