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Storm started his career as an accountant at Moret & Limperg in 1970. In 1976, he was appointed to the Executive Board of Kon Scholten-Honig. From 1993 to 2002, he served as Chairman of the Board of Aegon, a life insurance company, where he still serves on the Supervisory Board. He is Chairman of the Supervisory Board of KLM and Pon Holdings and board member at Unilever, Anheuser-Busch InBev and Baxter International.
Storm is married, and has two children.