| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2021 | 10 May 2021 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2021 | 15 Jan 2021 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Oct 2020 | 15 Oct 2020 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Aug 2020 | 10 Aug 2020 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Aug 2020 | 06 Aug 2020 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jul 2020 | 15 Jul 2020 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jun 2020 | 05 Jun 2020 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 15 May 2020 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 May 2020 | 11 May 2020 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 May 2020 | 08 May 2020 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2020 | 16 Apr 2020 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Feb 2020 | 07 Feb 2020 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Nov 2019 | 08 Nov 2019 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Nov 2019 | 31 Oct 2019 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Aug 2019 | 09 Aug 2019 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2019 | 15 May 2019 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2019 | 10 May 2019 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2019 | 07 May 2019 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Feb 2019 | 08 Feb 2019 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Nov 2018 | 13 Nov 2018 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Nov 2018 | 09 Nov 2018 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Aug 2018 | 10 Aug 2018 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2018 | 10 May 2018 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2018 | 09 May 2018 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2018 | 22 Feb 2018 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Feb 2018 | 08 Feb 2018 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Nov 2017 | 08 Nov 2017 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Nov 2017 | 31 Oct 2017 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Aug 2017 | 04 Aug 2017 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2017 | 10 May 2017 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 May 2017 | 28 Apr 2017 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2017 | 27 Jan 2017 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Nov 2016 | 28 Oct 2016 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Aug 2016 | 29 Jul 2016 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2016 | 11 May 2016 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 May 2016 | 29 Apr 2016 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Feb 2016 | 29 Jan 2016 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Nov 2015 | 10 Nov 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Oct 2015 | 23 Oct 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Aug 2015 | 11 Aug 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Aug 2015 | 31 Jul 2015 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2015 | 13 May 2015 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 May 2015 | 12 May 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Apr 2015 | 24 Apr 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Feb 2015 | 10 Feb 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Feb 2015 | 30 Jan 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Jan 2015 | 02 Jan 2015 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Dec 2014 | 01 Dec 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Nov 2014 | 03 Nov 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Oct 2014 | 24 Oct 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Sep 2014 | 29 Aug 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Aug 2014 | 06 Aug 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Aug 2014 | 04 Aug 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Aug 2014 | 01 Aug 2014 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 May 2014 | 27 May 2014 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2014 | 15 May 2014 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Apr 2014 | 28 Apr 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jan 2014 | 27 Jan 2014 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Jan 2014 | 07 Nov 2013 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Oct 2013 | 28 Oct 2013 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Aug 2013 | 05 Aug 2013 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Jul 2013 | 12 Jul 2013 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2013 | 09 May 2013 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 May 2013 | 02 May 2013 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 May 2013 | 02 May 2013 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 May 2013 | 29 Apr 2013 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2013 | 15 Apr 2013 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jan 2013 | 28 Jan 2013 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Nov 2012 | 31 Oct 2012 | 000-49602 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Aug 2012 | 06 Aug 2012 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2012 | 15 May 2012 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 May 2012 | 30 Apr 2012 | 000-49602 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2012 | 30 Apr 2012 | 000-30269 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2012 | 16 Mar 2012 | 000-30269 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Feb 2012 | 30 Jan 2012 | 000-49602 |