| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2022 | 09 May 2022 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2022 | 02 Feb 2022 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Nov 2021 | 10 Nov 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Sep 2021 | 10 Sep 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2021 | 03 Aug 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2021 | 01 Jul 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2021 | 09 Jun 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Feb 2021 | 05 Feb 2021 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2020 | 30 Nov 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2020 | 10 Nov 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Nov 2020 | 05 Nov 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Aug 2020 | 03 Aug 2020 | 000-26680 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2020 | 09 Jun 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2020 | 09 Jun 2020 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Sep 2019 | 06 Sep 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2019 | 13 Aug 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2019 | 11 Jun 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2019 | 03 Jun 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 May 2019 | 31 May 2019 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Aug 2018 | 27 Aug 2018 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2018 | 15 Aug 2018 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2018 | 09 Aug 2018 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2018 | 29 Jun 2018 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2018 | 07 Mar 2018 | 000-26680 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2018 | 14 Feb 2018 | 000-26680 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2017 | 12 Dec 2017 | 000-26680 |