An apparatus including a circuit structure including a device stratum; and a contact coupled to a supply line and routed through the device stratum and coupled to at least one device on a first side. A method including providing a supply from a package substrate to at least one transistor in a device stratum of a circuit structure; and distributing the supply to the at least one transistor using a supply line on an underside of the device stratum and contacting the at least one transistor on a device side by routing a contact from the supply line through the device stratum. A system including a package substrate, and a die including at least one supply line disposed on an underside of a device stratum and routed through the device stratum and coupled to at least one of a plurality of transistor devices on the device side.