James G. Dempsey's Stock Transactions in Frontier Group Holdings, Inc.

On October 25, 2025, James G. Dempsey, President of Frontier Group Holdings, Inc., engaged in several transactions involving the company's common stock and restricted stock units. Dempsey acquired 156,250 shares of common stock through the settlement of previously granted restricted stock units upon vesting, with no shares sold by him. Additionally, 68,359 shares of common stock were withheld by the issuer to satisfy tax withholding obligations in connection with the net issuance of shares from the vesting of restricted stock units. The remaining restricted stock units are set to fully vest on October 25, 2026. These transactions were reported in a Form 4 filing with the SEC.