X0306 4 2022-09-21 0001743907 Sun Country Airlines Holdings, Inc. SNCY 0001850688 Gyurci John C/O SUN COUNTRY HOLDINGS, INC. 2005 CARGO RD. MINNEAPOLIS MN 55450 1 Chief Acct. Off. & VP, Finance Employee Stock Option (Right to Buy) 5.30 2022-09-21 4 A 0 7436 5.30 A 2028-11-21 Common Stock 7436 82643 D On November 21, 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 April 11, 2019. /s/ Rose Neale, as attorney-in-fact for John Gyurci 2022-09-23