| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 08 Dec 2021 | 07 Dec 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | 27 May 2021 | 26 May 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | 23 Feb 2021 | 11 Feb 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | 02 Jun 2020 | 01 Jun 2020 | 000-19882 | |
| 4 | Open Document | Open Filing | FORM 4 | 21 May 2019 | 21 May 2019 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2019 | 11 May 2019 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2019 | 08 May 2019 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Apr 2019 | 02 Nov 2006 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jul 2018 | 09 May 2018 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 14 May 2018 | 11 May 2018 | 001-14888 |
| 4/A | Open Document | Open Filing | FORM 4/A | 02 Jun 2017 | 31 May 2017 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jun 2017 | 31 May 2017 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 15 May 2017 | 12 May 2017 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Mar 2017 | 27 Mar 2017 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Jun 2016 | 28 Jun 2016 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2016 | 18 May 2016 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2016 | 13 May 2016 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2016 | 11 May 2016 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2016 | 08 May 2016 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Apr 2016 | 15 Apr 2016 | 001-14888 |
| 5 | Open Document | Open Filing | FORM 5 | 12 Feb 2016 | 31 Dec 2015 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2015 | 08 May 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 - | 08 May 2015 | 08 May 2015 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 - | 22 Aug 2014 | 21 Aug 2014 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 - | 21 Aug 2014 | 20 Aug 2014 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 - | 23 May 2014 | 22 May 2014 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2014 | 29 Apr 2014 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 - | 14 Nov 2013 | 13 Nov 2013 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 - | 20 May 2013 | 17 May 2013 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2013 | 09 May 2013 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 - | 16 Jan 2013 | 15 Jan 2013 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Dec 2012 | 19 Dec 2012 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 - | 13 Aug 2012 | 10 Aug 2012 | 001-14888 |
| 4 | Open Document | Open Filing | FORM 4 | 15 May 2012 | 11 May 2012 | 000-19882 |