| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 13 Aug 2021 | 13 Aug 2021 | 001-11981 | |
| 4 | Open Document | Open Filing | 08 Apr 2021 | 08 Apr 2021 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Jan 2021 | 31 Dec 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Oct 2020 | 01 Oct 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Jul 2020 | 02 Jul 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 07 Apr 2020 | 03 Apr 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Jan 2020 | 02 Jan 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Oct 2019 | 01 Jul 2019 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Apr 2019 | 05 Apr 2019 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Jan 2019 | 30 Sep 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 09 Jul 2018 | 05 Jul 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Apr 2018 | 04 Apr 2018 | 001-11981 | |
| 4 | Open Document | Open Filing | 31 Jan 2018 | 30 Jun 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 05 Apr 2017 | 31 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Jan 2017 | 31 Dec 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 16 Nov 2016 | 30 Jun 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 11 Apr 2016 | 08 Apr 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 12 Jan 2016 | 06 Jan 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 15 Oct 2015 | 08 Oct 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 01 Jul 2015 | 30 Jun 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Apr 2015 | 31 Mar 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 09 Jan 2015 | 07 Jan 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 12 Nov 2014 | 10 Nov 2014 | 001-11981 | |
| 4 | Open Document | Open Filing | 11 Jul 2014 | 10 Jul 2014 | 000-55051 | |
| 4 | Open Document | Open Filing | 03 Apr 2014 | 31 Mar 2014 | 000-55051 | |
| 4 | Open Document | Open Filing | 06 Jan 2014 | 31 Dec 2013 | 000-55051 | |
| 4 | Open Document | Open Filing | 17 Oct 2013 | 01 Jul 2013 | 000-55051 | |
| 4 | Open Document | Open Filing | 03 Apr 2013 | 29 Mar 2013 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Jan 2013 | 31 Dec 2012 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Oct 2012 | 28 Sep 2012 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Jul 2012 | 29 Jun 2012 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Apr 2012 | 30 Mar 2012 | 001-11981 | |
| 4 | Open Document | Open Filing | 10 Jan 2012 | 03 Jan 2012 | 001-11981 |