| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 25 Oct 2022 | 21 Oct 2022 | 000-55470 | |
| 4 | Open Document | Open Filing | 17 Nov 2021 | 21 Oct 2021 | 000-55470 | |
| 4 | Open Document | Open Filing | 02 Oct 2020 | 01 Oct 2020 | 000-55470 | |
| 4 | Open Document | Open Filing | 02 Jan 2020 | 31 Dec 2019 | 000-55470 | |
| 4 | Open Document | Open Filing | 21 Dec 2018 | 19 Dec 2018 | 000-55470 | |
| 4 | Open Document | Open Filing | 03 Jan 2017 | 30 Dec 2016 | 000-55470 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Jan 2016 | 31 Dec 2015 | 000-55470 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Jul 2015 | 13 Jul 2015 | 000-55470 |