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 94 31.165 D 2029-04-17 Common Stock 94 269180 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.17 D 2029-04-17 Common Stock 100 269080 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.18 D 2029-04-17 Common Stock 600 268480 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 367 31.185 D 2029-04-17 Common Stock 367 268113 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 267908 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 105 31.19 D 2029-04-17 Common Stock 105 268008 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 101 31.21 D 2029-04-17 Common Stock 101 267807 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.22 D 2029-04-17 Common Stock 300 267507 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.23 D 2029-04-17 Common Stock 300 267207 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.235 D 2029-04-17 Common Stock 100 267107 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.24 D 2029-04-17 Common Stock 600 266507 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 201 31.245 D 2029-04-17 Common Stock 201 266306 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 399 31.25 D 2029-04-17 Common Stock 399 265907 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.265 D 2029-04-17 Common Stock 400 265207 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.26 D 2029-04-17 Common Stock 300 265607 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.27 D 2029-04-17 Common Stock 300 264907 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 700 31.28 D 2029-04-17 Common Stock 700 264207 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.29 D 2029-04-17 Common Stock 400 263807 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.295 D 2029-04-17 Common Stock 100 263707 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.30 D 2029-04-17 Common Stock 200 263507 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.305 D 2029-04-17 Common Stock 200 263307 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 498 31.31 D 2029-04-17 Common Stock 498 262809 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.3175 D 2029-04-17 Common Stock 100 262709 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 902 31.32 D 2029-04-17 Common Stock 902 261807 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 500 31.325 D 2029-04-17 Common Stock 500 261307 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.33 D 2029-04-17 Common Stock 400 260907 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.34 D 2029-04-17 Common Stock 400 260507 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 500 31.35 D 2029-04-17 Common Stock 500 260007 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.355 D 2029-04-17 Common Stock 100 259907 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.36 D 2029-04-17 Common Stock 100 259807 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