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 0 100 31.365 D 2029-04-17 Common Stock 100 259707 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 682 31.385 D 2029-04-17 Common Stock 682 258958 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 67 31.37 D 2029-04-17 Common Stock 67 259640 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.39 D 2029-04-17 Common Stock 100 258858 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.41 D 2029-04-17 Common Stock 100 258758 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.42 D 2029-04-17 Common Stock 600 258158 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 327 31.43 D 2029-04-17 Common Stock 327 257831 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.44 D 2029-04-17 Common Stock 400 257431 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 500 31.445 D 2029-04-17 Common Stock 500 256931 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.45 D 2029-04-17 Common Stock 100 256831 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.46 D 2029-04-17 Common Stock 200 256631 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.465 D 2029-04-17 Common Stock 600 256031 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.47 D 2029-04-17 Common Stock 100 255931 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.48 D 2029-04-17 Common Stock 200 255731 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.49 D 2029-04-17 Common Stock 100 255631 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 500 31.51 D 2029-04-17 Common Stock 500 254931 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.505 D 2029-04-17 Common Stock 200 255431 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.515 D 2029-04-17 Common Stock 100 254831 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 300 31.52 D 2029-04-17 Common Stock 300 254531 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.53 D 2029-04-17 Common Stock 400 254131 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.54 D 2029-04-17 Common Stock 200 253931 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 400 31.55 D 2029-04-17 Common Stock 400 253491 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 40 31.545 D 2029-04-17 Common Stock 40 253891 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 100 31.555 D 2029-04-17 Common Stock 100 253391 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 200 31.56 D 2029-04-17 Common Stock 200 253191 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 650 31.57 D 2029-04-17 Common Stock 650 252541 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.58 D 2029-04-17 Common Stock 600 251941 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 48 31.585 D 2029-04-17 Common Stock 48 251893 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 350 31.59 D 2029-04-17 Common Stock 350 251543 D Employee Stock Option (Right to Buy) 5.30 2021-09-13 4 S 0 600 31.60 D 2029-04-17 Common Stock 600 250943 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