Oral title: Protoplanet mass estimates via ALMA kinematics Oral abstract: How can we confirm and calculate the mass of protoplanets detected with high-contrast AO imaging? I will show that embedded companions can distort velocity maps on small and large scales through their circumplanetary disks and corotating zones, respectively, providing dynamical masses. ALMA data on MWC758 already reveals kinematical distortions which can be explained by an unseen 10MJup companion.