| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 24 Feb 2025 | 21 Feb 2025 | 000-27251 | |
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 2 TO SCHEDULE 13D | 11 Sep 2024 | ||
| 4 | Open Document | Open Filing | 11 Sep 2024 | 11 Nov 2020 | 000-27251 | |
| 4 | Open Document | Open Filing | 19 May 2021 | 17 May 2021 | 000-27251 | |
| 4 | Open Document | Open Filing | FORM 4 | 13 Nov 2020 | 11 Nov 2020 | 000-27251 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Oct 2020 | 21 Oct 2020 | 000-27251 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 29 Oct 2020 | ||
| SC 13D | Open Document | Open Filing | SC 13D | 13 Mar 2020 | ||
| 3 | Open Document | Open Filing | 11 Mar 2020 | 09 Mar 2020 | 000-27251 | |
| SC 13D | Open Document | Open Filing | SC 13D | 07 Nov 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 | 01 Nov 2019 | 01 Mar 2019 | 000-55446 |
| 3 | Open Document | Open Filing | FORM 3 | 01 Apr 2019 | 22 Mar 2019 | 000-55446 |
| SC 13D | Open Document | Open Filing | SC 13D | 01 Apr 2019 |