Exhibit 99.1 Western Digital Reports Fiscal Second Quarter 2025 Financial Results News Summary (inmillions,exceptpershareamounts)∣∣GAAP∣∣∣∣Non−GAAP∣∣∣−−−∣−−−∣−−−∣−−−∣−−−∣−−−∣−−−∣∣∣Q22025∣Q12025∣Q/Q∣Q22025∣Q12025∣Q/Q∣∣Revenue∣4,285 | 4,095∣up54,285 | 4,095∣up5664 | 809∣down18674 | 691∣down2852 | $7 ...