| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 20, 2024 | May 16, 2024 | 000-50796 | |
| 4 | Open Document | Open Filing | May 14, 2024 | May 10, 2024 | 000-50796 | |
| 4 | Open Document | Open Filing | May 12, 2023 | May 10, 2023 | 000-50796 | |
| 4 | Open Document | Open Filing | May 13, 2022 | May 11, 2022 | 000-50796 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 23, 2021 | Nov 23, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 16, 2021 | Jun 15, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | May 14, 2021 | May 12, 2021 | 000-50796 | |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 2, 2021 | Feb 22, 2021 | 001-34470 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 2, 2021 | Feb 19, 2021 | 001-34470 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 2, 2021 | Feb 26, 2021 | 001-34470 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 2, 2021 | Jan 30, 2021 | 001-34470 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 16, 2021 | Feb 19, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 2, 2021 | Feb 26, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 24, 2021 | Feb 22, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 23, 2021 | Feb 19, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 2, 2021 | Jan 30, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 27, 2021 | Jan 25, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 19, 2021 | Jan 14, 2021 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Dec 29, 2020 | Dec 28, 2020 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Nov 17, 2020 | Nov 16, 2020 | 001-34470 |
| 4/A | Open Document | Open Filing | Jun 11, 2020 | May 13, 2020 | 000-50796 | |
| 4 | Open Document | Open Filing | May 15, 2020 | May 13, 2020 | 000-50796 | |
| 4 | Open Document | Open Filing | 4 | Feb 28, 2020 | Feb 26, 2020 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 26, 2020 | Feb 22, 2020 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 21, 2020 | Feb 19, 2020 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 3, 2020 | Jan 30, 2020 | 001-34470 |
| 4 | Open Document | Open Filing | May 10, 2019 | May 8, 2019 | 000-50796 | |
| 4 | Open Document | Open Filing | 4 | Feb 26, 2019 | Feb 22, 2019 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 15, 2019 | Feb 13, 2019 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 1, 2019 | Jan 30, 2019 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 4, 2019 | Jan 2, 2019 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 24, 2018 | Aug 23, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jul 25, 2018 | Jul 23, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jun 27, 2018 | Jun 25, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jun 14, 2018 | Jun 12, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | May 31, 2018 | May 30, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | May 25, 2018 | May 25, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 9, 2018 | May 8, 2018 | 000-50796 |
| 4 | Open Document | Open Filing | 4 | Apr 27, 2018 | Apr 26, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Apr 25, 2018 | Apr 23, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Apr 17, 2018 | Apr 16, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Mar 26, 2018 | Mar 23, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Mar 22, 2018 | Mar 20, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 28, 2018 | Feb 26, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 15, 2018 | Feb 13, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 1, 2018 | Jan 30, 2018 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Nov 8, 2017 | Nov 7, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Sep 29, 2017 | Sep 27, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 22, 2017 | May 18, 2017 | 000-50796 |
| 4 | Open Document | Open Filing | 4 | Mar 28, 2017 | Mar 24, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 28, 2017 | Feb 26, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 15, 2017 | Feb 13, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 1, 2017 | Jan 30, 2017 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Oct 20, 2016 | Oct 18, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Sep 2, 2016 | Aug 31, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 26, 2016 | Aug 24, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 22, 2016 | Aug 18, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 17, 2016 | Aug 15, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 25, 2016 | Apr 21, 2016 | 000-50796 |
| 4 | Open Document | Open Filing | 4 | Mar 28, 2016 | Mar 24, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 29, 2016 | Feb 26, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 17, 2016 | Feb 13, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 13, 2016 | Jan 13, 2016 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Sep 8, 2015 | Sep 3, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 19, 2015 | Aug 17, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Aug 12, 2015 | Aug 10, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jun 17, 2015 | Jun 15, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | May 19, 2015 | May 15, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Apr 24, 2015 | Apr 23, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Apr 23, 2015 | Apr 21, 2015 | 000-50796 |
| 3 | Open Document | Open Filing | 3 | Apr 23, 2015 | Apr 21, 2015 | 000-50796 |
| 4 | Open Document | Open Filing | 4 | Mar 26, 2015 | Mar 24, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Mar 17, 2015 | Mar 16, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 27, 2015 | Feb 25, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 18, 2015 | Feb 13, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Feb 12, 2015 | Feb 10, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 14, 2015 | Jan 13, 2015 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Dec 23, 2014 | Dec 22, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Dec 17, 2014 | Dec 15, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Dec 5, 2014 | Dec 3, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Nov 19, 2014 | Nov 17, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Nov 6, 2014 | Nov 4, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Oct 22, 2014 | Oct 20, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Oct 16, 2014 | Oct 14, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Sep 23, 2014 | Sep 19, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Mar 27, 2014 | Mar 25, 2014 | 001-34470 |
| 4 | Open Document | Open Filing | 4 | Jan 15, 2014 | Jan 13, 2014 | 001-34470 |