ReportsAnnual reports and responsibility reviewsS Group's Financial statements 2018S Group's Financial statements 2017S Group's Financial statements 2016S Group and responsibility 2017S Group and responsibility 2016S Group and responsibility 2015S Group and responsibility 2014S Group's year 2013S Group's Corporate Responsibility Review 2013S Group's year 2012S Group's Corporate Responsibility Review 2012Financial statement bulletinsSOK Corporation Financial statement bulletin 2018SOK Corporation Financial statement bulletin 2017SOK Corporation Financial statement bulletin 2016SOK Corporation Financial statement bulletin 2015SOK Corporation Financial statement bulletin 2014SOK Corporation Financial statement bulletin 2013Interim reportsSOK Corporation Interim report 1–6/2018SOK Corporation Interim report 1–6/2017SOK Corporation Interim report 1–6/2016SOK Corporation Interim report 1–6/2015SOK Corporation Interim report 1–6/2014SOK Corporation Interim report 1–6/2013