| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | AMENDMENT NO. 34 TO SCHEDULE 13D | 11 Apr 2022 | ||
| 4 | Open Document | Open Filing | 30 Mar 2022 | 28 Mar 2022 | 001-04702 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 30 Oct 2020 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D AMENDMENT NO. 32 | 12 Sep 2016 | ||
| 5 | Open Document | Open Filing | FORM 5 | 09 Jun 2014 | 30 Apr 2014 | 001-04702 |