Complex sentence: Brian Jean, 54, is the final Leader of the Wildrose Party (2015--2017), Leader of the Official Opposition in Alberta (2015--2017), and MLA for Fort McMurray-Conklin (2015--present).
Split into simpler sentences: Brian Jean, 54, was the final Leader of the Wildrose Party (2015--2017). Jean is currently the MLA for Fort McMurray-Conklin (2015--present).