Frontier Group Holdings Inc

Rule 10b5-1 and Non-Rule 10b5-1 Trading Arrangements

During the fiscal quarter ended December 31, 2023, none of our directors or officers adopted, modified or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any other “non-Rule 10b5-1 trading arrangement,” except as follows:

On November 22, 2023, Barry L. Biffle, our Chief Executive Officer, and Mr. Biffle’s spouse, as trustee for a trust holding shares of our common stock for the benefit of Mr. Biffle’s child (the “Biffle Trust”)terminated a Rule 10b5-1(c) trading arrangement intended to satisfy the affirmative defense of Rule 10b5-1(c) originally adopted on June 9, 2023 for the sale of up to 2,226,972 shares of our common stock by Mr. Biffle and up to 75,000 shares of our common stock by the Biffle Trust, until February 15, 2024. Subsequently, on November 22, 2023, Mr. Biffle and Mr. Biffle’s spouse adopted a Rule 10b5-1(c) trading arrangement that is intended to satisfy the affirmative defense of Rule 10b5-1(c) for the sale of up to 2,226,972 shares of our common stock by Mr. Biffle and up to 75,000 shares of our common stock by the Biffle Trust, with a duration until August 5, 2024.