| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 31 May 2024 | 28 Mar 2024 | 000-55586 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Aug 2022 | 19 Aug 2022 | 000-55586 |
| 5 | Open Document | Open Filing | FORM 5 | 19 Jan 2022 | 31 Dec 2021 | 000-55586 |
| 5 | Open Document | Open Filing | FORM 5 | 19 Jan 2022 | 31 Dec 2020 | 000-55586 |
| 5 | Open Document | Open Filing | FORM 5 | 19 Jan 2022 | 31 Dec 2019 | 000-55586 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Oct 2013 | 02 Oct 2013 | 001-02257 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2012 | 06 Mar 2012 | 001-02257 |