Karl Johnny Hersvik has been CEO of Aker BP since May 2014. Prior to joining Aker BP, he served as head of research for Statoil. Hersvik has held a number of specialist and executive positions with Norsk Hydro and StatoilHydro. He holds a Cand. Scient. (second cycle) degree in Industrial Mathematics from the University of Bergen.

Hersvik is the chairman of the Board of Directors of Aker Energy AS and aiZe. He is member of the Board of Directors at The Norwegian Oil and Gas Association.