Gjensidige Forsikring ASA is a Norwegian insurance company. Though the company has roots back to 1689 when the fire treasury at Nes was founded, Gjensidige in its present form was founded in 2003 when the insurance division of Gjensidige NOR was not made part of its merger with Den norske Bank. Previously organised as a mutual insurance company, Gjensidige demutualised and listed on the Oslo Stock Exchange in December 2010.