X0306 4 2018-01-12 0 0001362468 Allegiant Travel CO ALGT 0000938673 GALLAGHER MAURICE J JR 1201 NORTH TOWN CENTER DRIVE LAS VEGAS NV 89144 1 1 1 0 CEO and Chairman Common Stock 2018-01-12 4 S 0 71678 165.5396 D 3071196 D Common Stock 2018-01-16 4 S 0 5539 168.0332 D 3065657 D Common Stock 2018-01-16 4 S 0 25023 169.2116 D 3040634 D Common Stock 2018-01-16 4 S 0 30876 170.118 D 3009758 D Common Stock 2018-01-16 4 S 0 1235 170.9953 D 3008523 D Common Stock 2018-01-17 4 S 0 10894 165.3607 D 2997629 D Common Stock 2018-01-17 4 S 0 24991 166.4291 D 2972638 D Common Stock 2018-01-17 4 S 0 7746 167.2448 D 2964892 D Common Stock 2018-01-17 4 S 0 4200 168.3641 D 2960692 D This trade made pursuant to a 10b5-1 trading plan on behalf of beneficial owner. The reported sales complete all planned sales under the 10b5-1 trading plan. Price reported is average price per share. Robert B. Goldberg, under power of attorney 2018-01-17