According to one embodiment a rear anchor assembly for a vertical formwork is provided that includes a dome plate having a spherical-shaped central section. The dome plate has an opening that extends through the spherical-shaped central section. The rear anchor assembly also includes a nut with a threaded hole configured for housing a threaded end of a tie rod. The nut includes a spherical portion arranged in the opening of the dome plate. The spherical portion of the nut and the spherical-shaped central section of the dome plate are coupled like a ball and socket joint. The rear anchor assembly also includes a support plate configured for being fixed to a rear formwork panel, the support plate including a housing in which the dome plate is arranged, the dome plate having freedom of radial movement with respect to the support plate inside the housing.