| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 27 Feb 2023 | 27 Feb 2023 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Feb 2022 | 21 Feb 2022 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 - | 14 Jan 2022 | 12 Jan 2022 | 000-26823 |
| 4 | Open Document | Open Filing | FORM 4 - | 11 Jan 2022 | 07 Jan 2022 | 000-26823 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Feb 2021 | 22 Feb 2021 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Feb 2020 | 24 Feb 2020 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Feb 2019 | 05 Feb 2019 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2018 | 09 Feb 2018 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Jan 2017 | 18 Jan 2017 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Jan 2016 | 20 Jan 2016 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 15 May 2015 | 13 May 2015 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Mar 2014 | 04 Mar 2014 | 001-08641 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2013 | 15 Feb 2013 | 000-26823 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Feb 2013 | 01 Feb 2013 | 001-08641 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jan 2013 | 04 Jan 2013 | 001-08641 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2012 | 14 Nov 2012 | 000-26823 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2012 | 14 Aug 2012 | 000-26823 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2012 | 15 May 2012 | 000-26823 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2012 | 14 Feb 2012 | 000-26823 |
| 4 | Open Document | Open Filing | MAIN DOCUMENT DESCRIPTION | 05 Jan 2012 | 03 Jan 2012 | 001-08641 |