X0609 4 2026-09-22 0 0000766421 ALASKA AIR GROUP, INC. ALK 0001715974 SCHNEIDER ANDREA L false C/O ALASKA AIR GROUP, INC. 19300 INTERNATIONAL BLVD SEATTLE WA 98188 0 1 0 0 Pres & CEO Horizon Airlines 0 COMMON STOCK 2026-09-22 4 M 0 48 0 A 45237 D COMMON STOCK 2026-09-22 4 F 0 48 41.91 D 45189 D COMMON STOCK 2026-09-22 4 M 0 499 0 A 45688 D COMMON STOCK 2026-09-22 4 F 0 499 41.91 D 45189 D COMMON STOCK 15 I By Spouse RESTRICTED STOCK UNITS 2026-09-22 4 M 0 48 0 D COMMON STOCK 48 1232 D RESTRICTED STOCK UNITS 2026-09-22 4 M 0 499 0 D COMMON STOCK 499 12871 D The transactions reported on Table I and Table II represent the simultaneous settlement of a portion of unvested RSUs and the subsequent withholding of the underlying shares by the Issuer solely to satisfy mandatory FICA and related payroll tax obligations triggered by the original RSU grant no longer being subject to a substantial risk of forfeiture. No actual shares of common stock were delivered to or sold by the Reporting Person. The remaining underlying RSUs continue to be unvested and subject to the original time-based vesting conditions the award was granted under. These transactions are exempt from Section 16(b) pursuant to Rule 16b-3(e). Each restricted stock unit (RSUs) represents a contingent right to receive one share of ALK common stock. The RSUs being disposed were from a grant of 1,280 RSUs that subsequent to the reported transaction will now vest in three annual installments as follows: 378 shares on November 3, 2026; 427 shares on November 3, 2027; and 427 shares on November 3, 2028. The RSUs being disposed were from a grant of 13,370 RSUs that subsequent to the reported transaction will now vest in three annual installments as follows: 3,957 shares on February 10, 2027; 4,457 shares on February 10, 2028; and 4,457 shares on February 10, 2029. /s/ Howard Kuppler, by power of attorney 2026-09-23