| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 23 Mar 2022 | 31 Dec 2021 | 001-08429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2016 | 08 Mar 2016 | 001-08491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Jan 2016 | 08 Jan 2016 | 001-13105 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jul 2015 | 01 Jul 2015 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jun 2015 | 25 Jun 2015 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jun 2015 | 22 Jun 2015 | 001-08491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Apr 2015 | 23 Apr 2015 | 001-13105 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2015 | 20 Mar 2015 | 001-08491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2015 | 25 Feb 2015 | 001-13105 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 27 Feb 2015 | 25 Feb 2015 | 001-13105 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Aug 2014 | 26 Aug 2014 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Aug 2014 | 26 Aug 2014 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jun 2014 | 25 Jun 2014 | 001-08491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Mar 2014 | 03 Mar 2014 | 001-08491 |