X0607 3 2026-05-13 0 0001362468 Allegiant Travel CO ALGT 0001264189 VOGEL JENNIFER L false 1201 N TOWN CENTER DR LAS VEGAS NV 89144 1 0 0 0 Common Stock 9277 D On May 13, 2026, pursuant to the Agreement and Plan of Merger dated as of January 11, 2026 (the "Merger Agreement"), by andamong the Issuer, Sun Country Airlines Holdings, Inc., ("Sun Country"), Mirage Merger Sub, Inc. ("Merger Sub 1"), a direct whollyowned subsidiary of the Issuer, and Sawdust Merger Sub, LLC ("Merger Sub 2"), a direct wholly owned subsidiary of the Issuer, (i)Merger Sub 1 merged with and into Sun Country (the "First Merger"), with Sun Country surviving the First Merger as a direct whollyowned subsidiary of the Issuer and (ii) immediately after the First Merger, Sun Country merged with and into Merger Sub 2, withMerger Sub 2 surviving as a direct, wholly owned subsidiary of the Issuer (the "Second Merger" and, together with the First Merger,the "Mergers"). Pursuant to the Merger Agreement, as of immediately prior to the effective time of the First Merger (the "First Effective Time"), eachshare of Sun Country's common stock, par value $0.01 per share, was converted into the right to receive (i) $4.10 in cash, withoutinterest and (ii) 0.1557 shares of the Issuer's common stock, par value $0.001 per share (collectively, the "Merger Consideration"). Asof immediately prior to the First Effective Time, each Sun Country equity award held by the reporting person became fully vested (tothe extent not yet vested), cancelled and converted into the right to receive the Merger Consideration. Robert B. Goldberg, under power of attorney 2026-05-15