X0508 4 2026-02-05 0 0001212545 WESTERN ALLIANCE BANCORPORATION WAL 0001603746 Halmy Christopher A 1 E. WASHINGTON STREET SUITE 1400 PHOENIX AZ 85004 1 0 0 0 0 Deferred Stock Units 2026-02-05 4 A 0 2580 0 A Common Stock 2580 2580 D Represents the grant of Deferred Stock Units under the Issuer's Stock Incentive Plan and credited under the Issuer's Director Deferral Plan, vesting on February 5, 2027. Deferred Stock Units are paid in shares of Common Stock issued under the Issuer's Stock Incentive Plan after a separation from service pursuant to the Director Deferral Plan /s/Jessica Jarvi (Attorney-in-fact) 2026-02-09