An axial-flux electric machine with a winding rotor comprises a stator section and a rotor section, both developing around and axis. The rotor section comprises a rotor, which, in turn, comprises a toroidal rotor core made of a ferromagnetic material and a plurality of windings and of teeth, which are angularly distributed on the rotor core in an alternated configuration. The teeth have, on at least one lateral surface of theirs, a shaped profile defining at least one holding surface, which is such as to cooperate with a resin matrix, which is suited to steadily lock the teeth on the rotor core.