| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2023 | 14 Mar 2023 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2021 | 09 Nov 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2019 | 10 Jun 2019 | 000-26497 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2019 | 30 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2019 | 30 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2019 | 24 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 21 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2019 | 08 May 2019 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2018 | 09 May 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2018 | 26 Mar 2018 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2017 | 25 May 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2017 | 24 Feb 2017 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jul 2016 | 05 Jul 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Mar 2016 | 08 Mar 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2015 | 01 Dec 2015 | 000-26497 |