X0306 4 2017-01-23 0001692115 Southwest Gas Holdings, Inc. SWX 0001592931 Romero Anita M 5241 SPRING MOUNTAIN ROAD LAS VEGAS NV 89150-0002 1 SVP/Staff Operations and Tech Common Stock 2016-06-01 5 A 0 197.5360 70.5300 A 40551.0250 D Common Stock 2016-06-01 5 A 0 42.4930 70.5300 A 40593.5180 D Common Stock 2016-06-01 5 A 0 16.7160 70.5300 A 40610.2340 D Common Stock 2016-06-01 5 A 0 1.4210 70.5300 A 40611.6550 D Common Stock 2016-09-01 5 A 0 200.1740 69.8037 A 40811.8290 D Common Stock 2016-09-01 5 A 0 43.1980 69.8200 A 40855.0270 D Common Stock 2016-09-01 5 A 0 18.4380 69.8200 A 40873.4650 D Common Stock 2016-12-01 5 A 0 190.7560 73.7222 A 41064.2210 D Common Stock 2016-12-01 5 A 0 41.3950 73.3300 A 41105.6160 D Common Stock 2016-12-01 5 A 0 17.6690 73.3300 A 41123.2850 D Common Stock 2017-01-23 4 F 0 765.3210 78.4400 D 40357.9640 D Common Stock 2017-01-23 4 F 0 1079.0680 76.6200 D 39278.8960 D Common Stock 2016-06-01 5 A 0 4.6741 70.5300 A 751.1261 I By 401(k) Common Stock 2016-09-01 5 A 0 4.7599 69.8200 A 755.8860 I By 401(k) Common Stock 2016-12-01 5 A 0 4.4581 73.3300 A 760.3441 I By 401(k) Amounts voluntarily reported were acquired through exempt dividend reinvestment transactions. Joshua M. Westerman, POA 2017-01-23