| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | FORM 4/A | 06 Jul 2021 | 30 Jun 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2021 | 30 Jun 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Apr 2021 | 01 Apr 2021 | 001-08443 |
| 4/A | Open Document | Open Filing | FORM 4/A | 29 Mar 2021 | 24 Mar 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Mar 2021 | 24 Mar 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Feb 2021 | 28 Jan 2021 | 001-08443 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Dec 2020 | 21 Dec 2020 | 001-08443 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2017 | 11 May 2017 | 001-08443 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2016 | 27 Dec 2016 | 001-08443 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2015 | 06 Oct 2014 | 001-08443 |