Born in 1963, resident of Asker. Lønsethagen is a Senior Research Scientist in Telenor R&I, joining Telenor in 1989. He has extensive experience from various project management roles withing Telenor, and he is a member of the Governing Board of the 6G Industry Association. He has served as Expert Advisory Board member and in various management roles in EU R&I projects and working groups. Lønsethagen has been an employee representative for Tekna in Telenor since 2015.