X0303 4 2010-01-19 0000092416 SOUTHWEST GAS CORP SWX 0001030285 JANOV EDWARD A 5241 SPRING MOUNTAIN ROAD LAS VEGAS NV 89150-0002 1 SR VicePres/Finance Common Stock 2010-01-19 4 A 0 4043 28.83 A 36961.6074 D Common Stock 2010-01-19 4 A 0 1653 29.04 A 38614.6074 D Management Incentive Plan SWX Restricted Stock Plan - RSUP Karen W. Stanfield, POA 2010-01-20