X0508 4 2026-02-05 false 0001670076 Frontier Group Holdings, Inc. ULCC 0001911236 Wetzel Josh A C/O FRONTIER GROUP HOLDINGS, INC. 4545 AIRPORT WAY DENVER CO 80239 false true false false VP & CAO false Common Stock 2026-02-05 4 M false 4619.00 A 18187.00 D Common Stock 2026-02-05 4 F false 1593.00 5.85 D 16594.00 D Common Stock 2026-02-05 4 A false 815.00 0.00 A 17409.00 D Common Stock 2026-02-06 4 F false 281.00 5.65 D 17128.00 D Restricted Stock Units 2026-02-05 4 M false 4619.00 0.00 D Common Stock 4619.00 0.00 D Restricted Stock Units 2026-02-05 4 A false 22124.00 0.00 A Common Stock 22124.00 22124.00 D Relates solely to the settlement of previously granted Restricted Stock Units upon vesting. No shares were sold by the Reporting Person. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer Common Stock. The Restricted Stock Units have no expiration date. Represents shares of Issuer Common Stock withheld by the Issuer solely to satisfy tax withholding obligations in connection with the net issuance of shares of Issuer Common Stock delivered to the Reporting on February 5, 2026, from the vesting of Restricted Stock Units, and does not represent a sale by the Reporting Person. On February 6, 2025, the reporting person was granted an award of Performance Stock Units ("PSUs"), which vest in the form of Common Stock based upon the Issuer's achievement of certain levels of total shareholder return relative to a pre-determined industry peer group. On February 5th, 2026, the Compensation Committee of the Issuer's Board of Directors determined that the performance goals had been partially met, results in the vesting of these shares. Represents shares withheld in satisfaction of taxes due upon the vesting of PSUs reported herein. The Restricted Stock Units have fully vested as of February 5, 2026. The Restricted Stock Units vest in three substantially equal annual installments beginning on February 5, 2027. /s/ Howard Diamond, as Attorney-in-fact for Josh A. Wetzel 2026-02-09