HARRISON ANDREW R

Row 1 · 2026-09-22 · Exercise / conversion · Acquired 869 · Balance 26,397

F1: 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).

F2: Each restricted stock unit (RSUs) represents a contingent right to receive one share of ALK common stock.

Row 2 · 2026-09-22 · Tax withholding · Disposed 869 · Balance 25,528

F1: 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).

Row 3 · 2026-09-22 · Exercise / conversion · Disposed 869 · Balance 22,411

F2: Each restricted stock unit (RSUs) represents a contingent right to receive one share of ALK common stock.

F1: 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).

F3: The RSUs being disposed were from a grant of 23,280 RSUs, that subsequent to the reported transaction will now vest in three annual installments as follows: 6,891 shares on February 10, 2027; 7,760 shares on February 10, 2028; and 7,760 shares on February 10, 2029.