X0306 4 2021-09-13 0001743907 Sun Country Airlines Holdings, Inc. SNCY 0001277174 DAVIS DAVID M C/O SUN COUNTRY AIRLINES HOLDINGS, INC. MINNEAPOLIS MN 55450 1 1 President & CFO Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 120 30.92 D 2029-04-17 Common Stock 120 251805 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 30.93 D 2029-04-17 Common Stock 200 251605 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 30.94 D 2029-04-17 Common Stock 100 251505 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 30.95 D 2029-04-17 Common Stock 100 251405 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 30.96 D 2029-04-17 Common Stock 200 251205 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 30.97 D 2029-04-17 Common Stock 200 251005 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 30.98 D 2029-04-17 Common Stock 100 250905 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 35 31.01 D 2029-04-17 Common Stock 35 250870 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.03 D 2029-04-17 Common Stock 200 250670 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.04 D 2029-04-17 Common Stock 300 250370 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.07 D 2029-04-17 Common Stock 100 250270 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.08 D 2029-04-17 Common Stock 100 250170 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.10 D 2029-04-17 Common Stock 100 250070 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.15 D 2029-04-17 Common Stock 200 249870 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.16 D 2029-04-17 Common Stock 100 249770 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.20 D 2029-04-17 Common Stock 100 249670 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.21 D 2029-04-17 Common Stock 100 249570 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.23 D 2029-04-17 Common Stock 100 249470 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.24 D 2029-04-17 Common Stock 100 249370 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.27 D 2029-04-17 Common Stock 100 249270 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.33 D 2029-04-17 Common Stock 100 249170 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.34 D 2029-04-17 Common Stock 100 249070 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.42 D 2029-04-17 Common Stock 100 248970 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.45 D 2029-04-17 Common Stock 200 248770 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 150 31.52 D 2029-04-17 Common Stock 150 248620 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 50 31.53 D 2029-04-17 Common Stock 50 248570 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.58 D 2029-04-17 Common Stock 100 248470 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.60 D 2029-04-17 Common Stock 100 248370 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 16 31.61 D 2029-04-17 Common Stock 16 248354 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.625 D 2029-04-17 Common Stock 100 248254 D Vest in four annual installments, subject to continued service, beginning April 11, 2019. Trades made subject to a 10b5-1 plan. /s/ Eric M. Levenhagen 2021-09-15