X0306 4 2022-09-21 0001743907 Sun Country Airlines Holdings, Inc. SNCY 0001850697 Trousdale William C/O SUN COUNTRY AIRLINES HOLDINGS, INC. MINNEAPOLIS MN 55450 1 VP-Fin. Plan. & Anlys & Treas. Employee Stock Option (Right to Buy) 5.30 2022-09-21 4 A 0 7436 5.30 A 2028-11-07 Common Stock 7436 22951 D On November 7, 2018, the reporting person was granted an option to purchase 99,135 shares of common stock. The option vests in six installments based on Sun Country's satisfaction of certain performance criteria. The performance criteria for the second installment were met resulting in partial vesting of the option as to 7,436 shares on September 19, 2022. Vest in four annual installments, subject to continued service, beginning June 1, 2019. /s/ Rose Neale, attorney-in-fact for William Trousdale 2022-09-23