X0306 4 2020-03-02 0001692115 Southwest Gas Holdings, Inc. SWX 0001446274 Haller Karen S 8360 S. DURANGO DR. LAS VEGAS NV 89113 1 EVP/Chief Legal/Admin Officer Common Stock 2020-03-02 5 A 0 156.3820 68.4700 A 30712.4578 D Common Stock 2020-03-02 5 A 0 35.8940 68.4700 A 30748.3518 D Common Stock 2020-06-01 5 A 0 169.9970 75.0700 A 30918.3488 D Common Stock 2020-06-01 5 A 0 34.5130 75.0700 A 30952.8618 D Common Stock 2020-09-01 5 A 0 208.9130 61.5500 A 31161.7748 D Common Stock 2020-09-01 5 A 0 42.4130 61.5500 A 31204.1878 D Common Stock 2020-12-01 5 A 0 198.8000 65.2800 A 31402.9878 D Common Stock 2020-12-01 5 A 0 40.3600 65.2800 A 31443.3478 D Common Stock 2020-03-02 5 A 0 16.4810 68.4700 A 2049.7170 I By 401(k) Common Stock 2020-06-01 5 A 0 15.2970 75.0700 A 2065.0140 I By 401(k) Common Stock 2020-09-01 5 A 0 19.0450 61.5500 A 2084.0590 I By 401(k) Common Stock 2020-12-01 5 A 0 18.1729 65.2800 A 2102.2319 I By 401(k) Common Stock 996.0000 I By Spouse Amounts voluntarily reported were acquired through exempt dividend reinvestment transactions. Thomas E. Moran, POA 2020-12-30