| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Feb 14, 2019 |    |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Feb 14, 2019 | |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Feb 13, 2019 | |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Feb 11, 2019 |  |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Feb 1, 2019 | |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Jan 25, 2019 | |
| SC 13G/A | Amendment to a previously filed SC 13G | Dec 10, 2018 | |
| SC 13G | Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities by passive investors and certain institutions | Jun 11, 2018 | |
| EFFECT | Notice from the SEC of registration effectiveness | May 10, 2018 | |
| EFFECT | Notice from the SEC of registration effectiveness | May 10, 2018 | |
| FWP | Free Writing Prospectus | May 9, 2018 | |
| CERT | CERT | May 8, 2018 | |
| FWP | Free Writing Prospectus | May 7, 2018 | |
| DRS/A | DRS/A | Mar 14, 2018 | |
