X0306 4 2018-03-01 0001692115 Southwest Gas Holdings, Inc. SWX 0001498492 Thoman A. Randall 5241 SPRING MOUNTAIN LAS VEGAS NV 89150 1 Common Stock 2018-03-01 5 A 0 142.5405 65.3600 A 22102.5072 D Common Stock 2018-03-01 5 A 0 19.4320 65.3600 A 22121.9392 D Common Stock 2018-06-01 5 A 0 129.3249 76.2500 A 22251.2641 D Common Stock 2018-06-01 5 A 0 17.6300 76.2500 A 22268.8941 D Common Stock 2018-09-04 5 A 0 126.8312 78.2800 A 22395.7253 D Common Stock 2018-09-04 5 A 0 17.2900 78.2800 A 22413.0153 D Common Stock 2018-12-03 5 A 0 124.6172 80.2000 A 22537.6325 D Common Stock 2018-12-03 5 A 0 16.9890 80.2000 A 22554.6215 D Amounts voluntarily reported were acquired through exempt dividend reinvestment transactions. Kyle Stephens, POA 2018-12-17