The Prime Tower consortium comprising – comprising
Losinger Construction AG, Zurich (lead contractor) and Karl Steiner AG, Zurich – is responsible for building the Prime Tower and the two annex buildings Cubus and Diagonal. The consortium is able to draw on many years of extensive experience in the construction of
high-rise buildings and major projects.

The Platform commercial building is being constructed by the renowned HRS Real Estate AG, Frauenfeld.