X0306 4 2023-01-04 0001743907 Sun Country Airlines Holdings, Inc. SNCY 0001548610 Bricker Jude C/O SUN COUNTRY AIRLINES HOLDINGS, INC. MINNEAPOLIS MN 55450 1 1 Chief Executive Officer Common Stock, par value $0.01 per share 2023-01-04 4 S 0 715 16.1876 D 100151 D Represents the number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of restricted stock units. This sale is mandated by the reporting person's previous election under Sun Country Airlines Holdings' equity incentive plan to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person. /s/ Rose Neale, attorney-in-fact for Jude Bricker 2023-01-05