| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 May 2021 | 05 May 2021 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2020 | 20 May 2020 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Apr 2020 | 27 Apr 2020 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2019 | 22 May 2019 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Apr 2019 | 29 Mar 2019 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2018 | 22 May 2018 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2018 | 02 Mar 2018 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jun 2017 | 07 Jun 2017 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2017 | 24 May 2017 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 May 2016 | 25 May 2016 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jan 2016 | 08 Jan 2016 | 000-51470 |
| 4 | Open Document | Open Filing | 26 Aug 2015 | 24 Aug 2015 | 001-07323 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2015 | 20 May 2015 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Jul 2014 | 09 Jul 2014 | 001-07323 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Jun 2014 | 18 Jun 2014 | 001-07323 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 May 2014 | 14 May 2014 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jul 2013 | 19 Jul 2013 | 001-07323 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Jun 2013 | 12 Jun 2013 | 001-07323 |
| 4 | Open Document | Open Filing | FROM 4 | 24 May 2013 | 23 May 2013 | 000-51470 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Sep 2012 | 14 Sep 2012 | 000-51470 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jul 2012 | 06 Jul 2012 | 001-07323 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Jun 2012 | 13 Jun 2012 | 001-07323 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2012 | 15 May 2012 | 000-51470 |