| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 - WURKIEL | 18 Feb 2022 | 17 Feb 2022 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2021 | 03 Nov 2021 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jul 2021 | 28 Jul 2021 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2021 | 28 Apr 2021 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2021 | 19 Feb 2021 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Oct 2020 | 28 Oct 2020 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2020 | 29 Jul 2020 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2020 | 29 Apr 2020 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2020 | 13 Feb 2020 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Oct 2019 | 25 Oct 2019 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2019 | 26 Jul 2019 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2019 | 29 Apr 2019 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Apr 2019 | 16 Apr 2019 | 001-34734 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Mar 2019 | 07 Mar 2019 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2019 | 15 Feb 2019 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Oct 2018 | 26 Oct 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Aug 2018 | 17 Aug 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2018 | 02 Aug 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2018 | 27 Jul 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2018 | 27 Apr 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2018 | 16 Feb 2018 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Oct 2017 | 27 Oct 2017 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jul 2017 | 28 Jul 2017 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2017 | 28 Apr 2017 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2017 | 28 Feb 2017 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2017 | 13 Feb 2017 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Oct 2016 | 28 Oct 2016 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Aug 2016 | 29 Jul 2016 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2016 | 29 Apr 2016 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Feb 2016 | 12 Feb 2016 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2016 | 12 Feb 2016 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 Nov 2015 | 20 Nov 2015 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Oct 2015 | 28 Oct 2015 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jul 2015 | 29 Jul 2015 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2015 | 27 Apr 2015 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2015 | 18 Feb 2015 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2015 | 19 Feb 2015 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Oct 2014 | 27 Oct 2014 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Jul 2014 | 30 Jul 2014 | 000-50189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2014 | 28 Apr 2014 | 000-50189 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Feb 2014 | 21 Feb 2014 | 001-34734 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2014 | 12 Feb 2014 | 000-50189 |