A closed-loop microelectromechanical accelerometer comprising: a supporting body of semiconductor material; an out-of-plane sensing mass of semiconductor material, having a first side facing the supporting body and a second side opposite to the first side, wherein the out-of-plane sensing mass is connected to the supporting body to oscillate around a non-barycentric fulcrum axis parallel to the first side and to the second side and perpendicular to an out-of-plane sensing axis; and feedback electrodes (17a-17d), capacitively coupled to the sensing mass and configured to apply opposite electrostatic forces (F FB1, F FB2) and a torque (T FB) around the fulcrum axis to the sensing mass; wherein the feedback electrodes (17a-17d) comprise a first group of feedback electrodes (17a, 17b) facing the first side of the out-of-plane sensing mass and a second group of feedback electrodes (17c, 17d) facing the second side of the out-of-plane sensing mass; and wherein the feedback electrodes (17a-17d) comprise: a first feedback electrode and a second feedback electrode, arranged on the supporting body symmetrically with respect to the fulcrum axis and facing the first side of the out-of-plane sensing mass; and a third feedback electrode and a fourth feedback electrode, supported by respective feedback supports symmetrically with respect to the fulcrum axis and facing the second side of the out-of-plane sensing mass; characterized in that the feedback supports comprise respective first structures, anchored to the supporting body and extending in a direction parallel to the out-of-plane sensing axis through openings in the out-of-plane sensing mass, and respective second structures (35b, 37b) which extend from the respective first structures (35a, 37a) in a direction perpendicular to the out-of-plane sensing axis and face the second side of the out-of-plane sensing mass. a supporting body of semiconductor material; an out-of-plane sensing mass of semiconductor material, having a first side facing the supporting body and a second side opposite to the first side, wherein the out-of-plane sensing mass is connected to the supporting body to oscillate around a non-barycentric fulcrum axis parallel to the first side and to the second side and perpendicular to an out-of-plane sensing axis; and feedback electrodes (17a-17d), capacitively coupled to the sensing mass and configured to apply opposite electrostatic forces (F FB1, F FB2) and a torque (T FB) around the fulcrum axis to the sensing mass; wherein the feedback electrodes (17a-17d) comprise a first group of feedback electrodes (17a, 17b) facing the first side of the out-of-plane sensing mass and a second group of feedback electrodes (17c, 17d) facing the second side of the out-of-plane sensing mass; and wherein the feedback electrodes (17a-17d) comprise: a first feedback electrode and a second feedback electrode, arranged on the supporting body symmetrically with respect to the fulcrum axis and facing the first side of the out-of-plane sensing mass; and a third feedback electrode and a fourth feedback electrode, supported by respective feedback supports symmetrically with respect to the fulcrum axis and facing the second side of the out-of-plane sensing mass; characterized in that the feedback supports comprise respective first structures, anchored to the supporting body and extending in a direction parallel to the out-of-plane sensing axis through openings in the out-of-plane sensing mass, and respective second structures (35b, 37b) which extend from the respective first structures (35a, 37a) in a direction perpendicular to the out-of-plane sensing axis and face the second side of the out-of-plane sensing mass. a first feedback electrode and a second feedback electrode, arranged on the supporting body symmetrically with respect to the fulcrum axis and facing the first side of the out-of-plane sensing mass; and a third feedback electrode and a fourth feedback electrode, supported by respective feedback supports symmetrically with respect to the fulcrum axis and facing the second side of the out-of-plane sensing mass; characterized in that the feedback supports comprise respective first structures, anchored to the supporting body and extending in a direction parallel to the out-of-plane sensing axis through openings in the out-of-plane sensing mass, and respective second structures (35b, 37b) which extend from the respective first structures (35a, 37a) in a direction perpendicular to the out-of-plane sensing axis and face the second side of the out-of-plane sensing mass.