| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 14 Jun 2023 | 13 Jun 2023 | 000-22427 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2022 | 04 May 2022 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Aug 2021 | 17 Aug 2021 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 May 2021 | 24 May 2021 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2021 | 05 May 2021 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Apr 2020 | 08 Apr 2020 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2019 | 02 May 2019 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2018 | 03 May 2018 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2017 | 04 May 2017 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2017 | 01 May 2017 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2017 | 25 Nov 2016 | 000-22427 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2016 | 18 May 2015 | 000-22427 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2016 | 31 Mar 2014 | 000-22427 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2016 | 16 Nov 2012 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2016 | 13 May 2016 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2016 | 10 May 2016 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2016 | 05 May 2016 | 000-22427 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Mar 2016 | 08 Mar 2016 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2016 | 08 Mar 2016 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 May 2015 | 18 May 2015 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 May 2015 | 05 May 2015 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2014 | 06 May 2014 | 000-22427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Apr 2014 | 31 Mar 2014 | 000-22427 |