A delivery system includes a delivery sheath with a control device and at least one supra-annular support being movable through a lumen of the delivery sheath. The control device includes a connection member coupled to a distal end of a control catheter. The connection member is configured to removably couple to the prosthetic valve at a proximal position along a supra-annular portion of the prosthetic valve. The control device is operable to advance the prosthetic valve in a compressed configuration through the delivery sheath and to at least partially deploy the prosthetic valve in an expanded configuration into a native valve annulus. The supra-annular support(s) is/are removably coupleable at one or more positions along the supra-annular portion of the prosthetic valve and is/are configured to stabilize or actuate at least a portion of the prosthetic valve relative to an annular plane of a native heart valve during deployment.