| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | 20 Feb 2024 | 15 Feb 2024 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Feb 2023 | 17 Feb 2023 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2023 | 15 Feb 2023 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Mar 2022 | 31 Jan 2022 | 001-39395 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Feb 2022 | 17 Feb 2022 | 000-25826 |
| 4 | Open Document | Open Filing | 18 Feb 2022 | 16 Feb 2022 | 001-35988 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2022 | 15 Feb 2022 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Nov 2021 | 12 Nov 2021 | 001-38907 |
| 4 | Open Document | Open Filing | 20 Aug 2021 | 18 Aug 2021 | 001-35988 | |
| 3 | Open Document | Open Filing | FORM 3 | 23 Jul 2021 | 21 Jul 2021 | 001-39395 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2021 | 17 Feb 2021 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2021 | 15 Feb 2021 | 000-25826 |
| 4 | Open Document | Open Filing | 06 Jul 2020 | 01 Jul 2020 | 001-35988 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jun 2020 | 09 Jun 2020 | 001-38907 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Mar 2020 | 18 Mar 2020 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2020 | 15 Feb 2020 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Jan 2020 | 30 Dec 2019 | 001-38907 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Nov 2019 | 13 Nov 2019 | 001-38907 |
| 4 | Open Document | Open Filing | 30 May 2019 | 24 May 2019 | 001-35988 | |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 09 May 2019 | 09 May 2019 | 001-38907 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Apr 2019 | 03 Apr 2019 | 000-25826 |
| 4 | Open Document | Open Filing | 22 Feb 2019 | 30 Jan 2019 | 001-35988 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2019 | 15 Feb 2019 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Dec 2018 | 14 Dec 2018 | 000-25826 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Oct 2018 | 19 Oct 2018 | 001-35988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Mar 2018 | 09 Mar 2018 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2018 | 15 Feb 2018 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2018 | 15 Feb 2018 | 000-25826 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2018 | 15 Feb 2018 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2017 | 12 May 2017 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Apr 2017 | 25 Apr 2017 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Mar 2017 | 27 Mar 2017 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2017 | 14 Mar 2017 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2017 | 01 Mar 2017 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2017 | 01 Mar 2017 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2017 | 15 Feb 2017 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Apr 2016 | 26 Apr 2016 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2016 | 16 Mar 2016 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2016 | 14 Mar 2016 | 000-31659 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Mar 2016 | 14 Mar 2016 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2016 | 04 Mar 2016 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2016 | 01 Mar 2016 | 000-31659 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2016 | 15 Feb 2016 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jan 2016 | 04 Jan 2016 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Dec 2015 | 03 Dec 2015 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Nov 2015 | 29 Oct 2015 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2015 | 08 Jun 2015 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2015 | 28 Apr 2015 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Mar 2015 | 13 Mar 2015 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2015 | 14 Mar 2015 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2015 | 04 Mar 2015 | 000-31659 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Feb 2015 | 15 Feb 2015 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2014 | 11 Dec 2014 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Sep 2014 | 10 Sep 2014 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2014 | 08 Jun 2014 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2014 | 29 Apr 2014 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Mar 2014 | 14 Mar 2014 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Mar 2014 | 14 Mar 2014 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2014 | 04 Mar 2014 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2014 | 28 Feb 2014 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2014 | 15 Feb 2014 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jun 2013 | 08 Jun 2013 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2013 | 23 Apr 2013 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2013 | 15 Apr 2013 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Mar 2013 | 15 Mar 2013 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2013 | 04 Mar 2013 | 000-31659 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Feb 2013 | 15 Feb 2013 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Nov 2012 | 09 Nov 2012 | 001-02979 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Aug 2012 | 30 Jul 2012 | 000-25826 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2012 | 08 Jun 2012 | 000-31659 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2012 | 08 Jun 2012 | 000-31659 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Apr 2012 | 24 Apr 2012 | 001-02979 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Apr 2012 | 16 Apr 2012 | 001-02979 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 13 Mar 2012 | 29 Feb 2012 | 000-25826 |