A semiconductor device comprises a stack structure comprising decks each comprising a memory element level comprising memory elements, and a control logic level in electrical communication with the memory element level and comprising control logic devices. At least one of the control logic devices of the control logic level of one or more of the decks comprises at least one device exhibiting a gate electrode shared by neighboring vertical transistors thereof. A control logic assembly, a control logic device, an electronic system, a method of forming a control logic device, and a method of operating a semiconductor device are also described.