| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 03 Jan 2023 | 30 Dec 2022 | 000-21074 | |
| SC 13D/A | Open Document | Open Filing | 03 Jan 2023 | |||
| 4 | Open Document | Open Filing | 14 Jun 2022 | 10 Jun 2022 | 000-21074 | |
| 4 | Open Document | Open Filing | 20 Dec 2021 | 16 Dec 2021 | 000-21074 | |
| 4 | Open Document | Open Filing | 16 Dec 2021 | 14 Dec 2021 | 000-21074 | |
| 4 | Open Document | Open Filing | 14 Dec 2021 | 10 Dec 2021 | 000-21074 | |
| 4 | Open Document | Open Filing | 09 Dec 2021 | 08 Dec 2021 | 000-21074 | |
| SC 13D/A | Open Document | Open Filing | 09 Dec 2021 | |||
| SC 13D | Open Document | Open Filing | 13 Sep 2021 | |||
| 3 | Open Document | Open Filing | 10 Sep 2021 | 09 Sep 2021 | 000-21074 | |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Sep 2014 | 03 Sep 2014 | 000-54639 |