Gjensidige Forsikring ASA is a Norwegian insurance company. The company traces its roots back to 1816 when a fire mutual was founded as Land Gjensidige Brandkasse in what is today Innlandet county. Gjensidige demutualised and listed on the Oslo Stock Exchange in December 2010. The firm, headquartered in Oslo, has a market share of some 26% (2021) in the Norwegian insurance market. The company has 36 branch offices in Norway, not including affiliated fire mutuals, and 1 million customers. Gjensidige has subsidiaries in Denmark, Sweden and The Baltics.The company offers all kinds of insurance for retail customers, agriculture and business. It also offers pensions and savings products.