Humm was born in 1959 in Saarbrücken, West Germany. He is German and British; his mother is Belgian. Humm did his Baccalauréat at the Lycée Franco Allemand in Saarbrücken. After studying philosophy and business administration at the University of Saarland, Germany and the University of Michigan in Ann Arbor, USA, Humm received an MBA with distinction in 1985 from the IMD Business School in Switzerland
