| 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 | 04 Mar 2022 | 02 Mar 2022 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jan 2022 | 02 Jan 2022 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Nov 2021 | 08 Nov 2021 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Mar 2021 | 10 Mar 2021 | 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 | 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 | 12 Jul 2016 | 12 Jul 2016 | 000-26497 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jul 2016 | 08 Jul 2016 | 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 | 14 Nov 2014 | 12 Nov 2014 | 000-26497 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2014 | 10 Nov 2014 | 000-26497 |
| 4 | Open Document | Open Filing | 12 Nov 2014 | 10 Nov 2014 | 000-26497 | |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 14 Aug 2014 | 12 Aug 2014 | 000-26497 |