General Atlantic has agreed to acquire just over 30% of Hyperion Insurance Group in a transaction that values the company at an equity value of £250 million ($379.5 million). General Atlantic will acquire up to 100% of the shares held by 3i Group and 80% of the shares held by B.P. Marsh & Partners; Hyperion management will continue to hold over 60% of shares in the company. Hyperion is an international insurance intermediary group with divisions in broking and underwriting. The company employs more than 1,400 people in over 60 offices operating out of 28 countries. General Atlantic is a global growth equity firm based in Greenwich, CT.