| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2022 | 03 May 2022 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2022 | 03 May 2022 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2021 | 03 May 2021 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Sep 2020 | 04 Sep 2020 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2020 | 17 Aug 2020 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2020 | 01 Apr 2020 | 000-12896 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2019 | 20 Mar 2019 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2019 | 20 Mar 2019 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Apr 2018 | 01 Mar 2018 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2017 | 01 Dec 2016 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Oct 2015 | 26 Oct 2015 | 000-12896 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Dec 2012 | 17 Dec 2012 | 000-12896 |