---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-053305"
form_type: "8-K"
ticker: "WDC"
cik: "0000106040"
company_name: "WESTERN DIGITAL CORP"
filed_at: "2026-08-05T20:04:35+00:00"
generated_at: "2026-08-05T20:06:35.794692+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Western Digital Q4 FY2026 revenue $3.75B (+44% YoY); guides Q1 ~$4.1B

## Summary
- Q4 revenue $3.747B, up 44% YoY; GAAP diluted EPS $8.21, non-GAAP $3.56.
- GAAP gross margin 54.1% (up 1310 bps YoY); operating income $1.563B (+130% YoY).
- Full-year FY2026 revenue $12.919B (+36% YoY); GAAP EPS $24.28, non-GAAP $10.22.
- Q1 FY2027 guidance: revenue ~$4.1B, non-GAAP gross margin 55.5%, non-GAAP EPS $4.00.
- Cash flow from operations $1.39B; free cash flow $1.28B in Q4.

## SEC filing metadata
- accession: 0001628280-26-053305
- form_type: 8-K
- ticker: WDC
- cik: 0000106040
- company_name: WESTERN DIGITAL CORP
- filed_at: 2026-08-05T20:04:35+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/106040/000162828026053305/0001628280-26-053305-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/106040/000162828026053305/wdc-20260805.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-053305
- JSON: https://secwatch.observer/filing/0001628280-26-053305.json
- Plain text: https://secwatch.observer/filing/0001628280-26-053305.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.