| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2021 | 19 May 2021 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2021 | 10 May 2021 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Apr 2021 | 13 Apr 2021 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2020 | 03 Dec 2020 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Oct 2020 | 23 Oct 2020 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jul 2020 | 13 Jul 2020 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2018 | 12 Feb 2018 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2018 | 22 Jan 2018 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2018 | 29 Dec 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Dec 2017 | 21 Dec 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Dec 2017 | 18 Dec 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Dec 2017 | 15 Dec 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Dec 2017 | 11 Dec 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2017 | 09 Mar 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jan 2017 | 04 Jan 2017 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Dec 2016 | 28 Dec 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Dec 2016 | 16 Dec 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2016 | 05 Dec 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Nov 2016 | 30 Nov 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Oct 2016 | 17 Oct 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Oct 2016 | 12 Oct 2016 | 000-50191 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Oct 2015 | 14 Oct 2015 | 000-50191 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2015 | 25 Jan 2015 | 000-50191 |