| 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 | 28 Sep 2018 | 27 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 | 26 Mar 2018 | 23 Mar 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 | 29 Mar 2017 | 21 Mar 2017 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Jan 2017 | 31 Dec 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 28 Dec 2016 | 27 Dec 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 23 Dec 2016 | 21 Dec 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 29 Nov 2016 | 29 Nov 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 25 Nov 2016 | 22 Nov 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 16 Nov 2016 | 30 Sep 2016 | 001-11981 | |
| 3 | Open Document | Open Filing | 16 Nov 2016 | 03 Aug 2016 | 001-11981 | |
| 4 | Open Document | Open Filing | 21 Aug 2015 | 17 Aug 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 03 Jun 2015 | 01 Jun 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 02 Apr 2015 | 31 Mar 2015 | 001-11981 | |
| 4 | Open Document | Open Filing | 12 Dec 2014 | 09 Dec 2014 | 001-11981 | |
| 4 | Open Document | Open Filing | 26 Mar 2014 | 25 Mar 2014 | 000-55051 | |
| 4 | Open Document | Open Filing | 01 Nov 2013 | 29 Oct 2013 | 000-55051 |