| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jun 2021 | 04 Jun 2021 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2021 | 26 Feb 2021 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Dec 2020 | 07 Dec 2020 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Mar 2020 | 28 Feb 2020 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2019 | 01 Aug 2019 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jul 2019 | 29 Jun 2019 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Sep 2018 | 04 Sep 2018 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Aug 2018 | 24 Aug 2018 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Jun 2018 | 01 Jun 2018 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 May 2018 | 06 May 2018 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Feb 2018 | 22 Feb 2018 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Aug 2017 | 25 Aug 2017 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Aug 2016 | 26 Aug 2016 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Sep 2015 | 28 Aug 2015 | 001-03863 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jun 2015 | 01 Jun 2015 | 001-03863 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 13 May 2015 | 11 May 2015 | 001-03863 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Dec 2013 | 09 Dec 2013 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Oct 2013 | 03 Oct 2013 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Oct 2013 | 01 Oct 2013 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Sep 2013 | 04 Sep 2013 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2013 | 16 May 2013 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Oct 2012 | 03 Oct 2012 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Oct 2012 | 01 Oct 2012 | 000-07491 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Sep 2012 | 04 Sep 2012 | 000-07491 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Sep 2012 | 01 Sep 2012 | 000-07491 |