X0306 4 2018-05-07 0 0001362468 Allegiant Travel CO ALGT 0001632467 Anderson Gregory Clark 1201 NORTH TOWN CENTER DRIVE LAS VEGAS NV 89144 0 1 0 0 SVP/Principal Accounting Offic Common Stock 2018-05-07 4 F 0 766 159.6 D 15246 D Beneficial owner granted shares of restricted stock on November 7, 2016, with vesting on each of May 7, 2017, May 7, 2018, May 7, 2019 and May 7, 2020. Upon vesting, beneficial owner returned to Company a portion of the vested shares for tax withholding purposes. Shares of restricted stock effectively repurchased by Company at $159.60 per share to fund the beneficial owner's required tax withholding. Includes 77 shares acquired on 4/30/2018 by beneficial owner pursuant to issuer's Employee Stock Purchase Plan, which acquisition is exempt under Rule 16-b-3(c) and therefore was not reported at the time of the acquisition. Robert B. Goldberg, under power of attorney 2018-05-09