144 0001854386 XXXXXXXX LIVE 0001670076 FRONTIER GROUP HOLDINGS, INC. 001-40304 4545 AIRPORT WAY DENVER CO 80239 720-374-4200 MARK MITCHELL Officer common stock UBS Financial Services Inc

1000 Harbor Blvd 3rd Floor Weehawken NJ 07086

125000 968750 230215771 08/05/2026 NASDAQ common stock 02/03/2023 RSU Frontier Group Holdings, Inc. N 2289 02/03/2023 N/A common stock 02/03/2024 RSU Frontier Group Holdings, Inc. N 2665 02/03/2024 N/A common stock 02/03/2025 RSU Frontier Group Holdings, Inc. N 2289 02/03/2025 N/A common stock 02/08/2024 RSU Frontier Group Holdings, Inc. N 2605 02/08/2024 N/A common stock 02/08/2024 RSU Frontier Group Holdings, Inc. N 2823 02/08/2024 N/A common stock 02/08/2025 RSU Frontier Group Holdings, Inc. N 2058 02/08/2025 N/A common stock 02/08/2025 RSU Frontier Group Holdings, Inc. N 2085 02/08/2025 N/A common stock 02/18/2022 RSU Frontier Group Holdings, Inc. N 10162 02/18/2022 N/A common stock 02/19/2021 RSU Frontier Group Holdings N 12844 02/19/2021 N/A common stock 02/19/2023 RSU Frontier Group Holdings, Inc. N 10182 02/19/2023 N/A common stock 02/22/2022 RSU Frontier Group Holdings, Inc. N 2559 02/22/2022 N/A common stock 02/23/2023 RSU Frontier Group Holdings, Inc. N 2565 02/23/2023 N/A common stock 02/23/2024 RSU Frontier Group Holdings, Inc. N 3249 02/23/2024 N/A common stock 10/16/2024 RSU Frontier Group Holdings, Inc. N 24414 10/16/2024 N/A common stock 10/16/2025 RSU Frontier Group Holdings, Inc. N 12914 10/16/2025 N/A common stock 10/25/2024 RSU Frontier Group Holdings, Inc. N 29297 10/25/2024 N/A Y 08/05/2026 /s/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for MARK MITCHELL