144 0001935319 XXXXXXXX LIVE 0001743907 Sun Country Airlines Holdings, Inc. 001-40217 2005 CARGO ROAD MINNEAPOLIS MN 55450 651-681-3900 Neale Erin Rose Officer Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

4468 70951.84 52939832 01/13/2025 NASDAQ Common 01/09/2025 Restricted Stock Vesting Issuer N 4468 01/09/2025 Compensation N Erin R. Neale

2005 Cargo Road Minneapolis MN 55450

Common 12/16/2024 1738 25861.44 Erin R. Neale

2005 Cargo Road Minneapolis MN 55450

Common 01/03/2025 938 13297.99 Erin R. Neale

2005 Cargo Road Minneapolis MN 55450

Common 01/06/2025 1607 23044.38 Erin R. Neale

2005 Cargo Road Minneapolis MN 55450

Common 01/10/2025 2434 38813.98 01/13/2025 09/12/2024 /s/ Margaret Campbell, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Erin R. Neale