| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 29 Aug 2023 | 25 Aug 2023 | 000-26108 | |
| 4 | Open Document | Open Filing | 11 Jan 2023 | 11 Jan 2023 | 000-26108 | |
| 4 | Open Document | Open Filing | 20 Jan 2022 | 18 Jan 2022 | 000-26108 | |
| 4 | Open Document | Open Filing | 06 Jul 2021 | 30 Jun 2021 | 033-20111 | |
| SC 13G | Open Document | Open Filing | SC 13G | 18 May 2021 | ||
| 4 | Open Document | Open Filing | 10 Mar 2021 | 08 Mar 2021 | 033-20111 | |
| 4 | Open Document | Open Filing | 15 Jan 2021 | 13 Jan 2021 | 000-26108 | |
| 3 | Open Document | Open Filing | 28 Dec 2020 | 21 Dec 2020 | 033-20111 | |
| 4 | Open Document | Open Filing | 06 Feb 2020 | 04 Feb 2020 | 000-26108 | |
| 3/A | Open Document | Open Filing | 06 Feb 2020 | 23 Mar 2018 | 000-26108 | |
| 3 | Open Document | Open Filing | 11 Sep 2018 | 23 Mar 2018 | 000-26108 | |
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | 30 Apr 2013 |