SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ý ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2018 Or o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ____ to ____ Commission File Number 001-33166 Allegiant Travel Company (Exact Name of Registrant as Specified in Its Charter) Nevada 20-4745737 (State or Other Jurisdiction of I ...

Allegiant Travel Company (NASDAQ:ALGT) Q4 2018 Results Conference Call January 30, 2019 4:30 PM ET Company Participants Chris Allen - IR Maury Gallagher - Chairman and CEO John Redmond - President Scott Sheldon - CFO and COO Drew Wells - VP, Revenue & Planning Greg Anderson - SVP, Treasury and Principal Accounting Officer Scott DeAngelo - CMO Conference Call Participants Hunter Keay - Wolfe Research Helane Becker - Cowen Savi Syth - Raymond James Catherine O'Brien - Goldman Sachs Michael Linenberg - Deutsch ...