[2] The company traces its roots back to 1816 when a fire mutual was founded as Land Gjensidige Brandkasse in what is today Innlandet county.

The company has 36 branch offices in Norway, not including affiliated fire mutuals, and 1 million customers.

[3] The company offers all kinds of insurance for retail customers, agriculture and business.

[4] In the early 1970s the p&c-company traded under the name Samtrygd, whereas the life insurance company had simplified its name to Gjensidige Liv.

In 2007 Gjensidige acquired shares in Storebrand, and for some time held the position as the number one shareholder with 24.33% of the stock.