| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2022 | 18 May 2022 | 001-39801 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2021 | 19 May 2021 | 001-39801 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2021 | 15 Mar 2021 | 001-39801 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 May 2020 | 20 May 2020 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2019 | 16 May 2019 | 000-14710 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2019 | 10 May 2019 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Dec 2018 | 20 Dec 2018 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Nov 2018 | 15 Nov 2018 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2018 | 17 May 2018 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2018 | 15 Sep 2017 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2017 | 10 Feb 2017 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 21 Jul 2016 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 21 Jul 2016 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 May 2016 | 28 May 2016 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jun 2015 | 28 May 2015 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2015 | 21 May 2015 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2014 | 13 Nov 2014 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Sep 2014 | 12 Sep 2014 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2014 | 28 May 2014 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 May 2014 | 22 May 2014 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2013 | 13 Nov 2013 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2013 | 28 May 2013 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2013 | 23 May 2013 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2012 | 13 Nov 2012 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jun 2012 | 19 Jun 2012 | 000-14710 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 May 2012 | 24 May 2012 | 000-14710 |