For forming profile elements, in particular trapezoidal or Ω-shaped profile elements, from a multilayer stacking of pre-impregnated fibers, the stacking is moved in feed direction with feed speed by sets of conveyor belts which engage with the upper and lower surfaces of the lateral edge sections of the stacking and hold the edge sections in a starting plane. The sets of conveyor belts are arranged so that the distance between the sets engaging with opposite edge sections decreases in feed direction. To conduct the forming step a middle portion of the stacking is moved over a ramp upwardly inclined in feed direction with respect to the starting plane.