| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 May 2021 | 14 May 2021 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Nov 2020 | 03 Nov 2020 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 15 May 2020 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 May 2020 | 04 May 2020 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Nov 2019 | 18 Nov 2019 | 000-32405 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2019 | 20 May 2019 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2018 | 31 Jul 2018 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2018 | 18 May 2018 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2017 | 15 Nov 2017 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2017 | 19 May 2017 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Nov 2016 | 07 Nov 2016 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2016 | 20 May 2016 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2015 | 15 May 2015 | 000-32405 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2014 | 16 May 2014 | 000-32405 |