- Direction
- Unknown
- Own history
- —
- Peers
- —
- Persistence
- TRANSIENT
· Computer Storage Devices
RESEARCH SNAPSHOTWESTERN DIGITAL CORP's latest supported as-filed period reports revenue of $4.4B; gross margin moved 1430 basis points higher on the same comparison basis. Every value below links to its SEC accession and metric lineage.
No material rule-based research observation currently meets GrossPattern's Insight value threshold. Current state, direction, and filing evidence remain available below.
Separate current dimensions—not a universal score or investment ranking.
A multidimensional view of the latest comparable filing—not a composite score or recommendation.
Level · gp.fundamentals.capex_revenue_ratio
Raw value 5.18% · OPTIONAL
Ratio · gp.fundamentals.operating_cash_flow + gp.fundamentals.revenue
Raw value 36.61% · OPTIONAL
Level · gp.fundamentals.inventory_revenue_ratio
Raw value 40.65% · OPTIONAL
Level · gp.fundamentals.gross_margin
Raw value 57.84% · CORE
Level · gp.fundamentals.operating_margin
Raw value 46.70% · CORE
Level · gp.fundamentals.sbc_revenue_ratio
Raw value 1.80% · OPTIONAL
The most important deterministic changes, ranked by magnitude, issuer history, persistence, and accounting profile.
This cluster groups 3 independently calculated changes: Revenue increased 55.5%; Operating margin moved 1860 bp higher; Operating income increased 158.3%.
3 evidence-backed componentsThis cluster groups 3 independently calculated changes: Revenue increased 45.5%; Operating margin moved 253 bp higher; Operating income increased 56.6%.
3 evidence-backed componentsThis cluster groups 2 independently calculated changes: Capital expenditure increased 211.0%; Capex / revenue moved 259 bp higher.
2 evidence-backed componentsFree-cash-flow proxy changed +129.9% from the comparable as-filed period.
Each point keeps the date investors could first observe it and its accession.
WDC · as filed with the SEC · reported-date aware
Direct SEC links, filing dates, report periods, and amendment flags.
0001266824-26-000219SEC ↗10-QOct 23, 2026Period Oct 2, 20260001628280-26-066933SEC ↗4Oct 22, 2026Period Oct 20, 20260001266824-26-000217SEC ↗8-KOct 22, 2026Period Oct 22, 20260001628280-26-066882SEC ↗4Sep 21, 2026Period Sep 17, 20260001266824-26-000214SEC ↗4Sep 21, 2026Period Sep 17, 20260001266824-26-000213SEC ↗4Sep 21, 2026Period Sep 17, 20260001266824-26-000212SEC ↗Transaction semantics distinguish purchases, sales, awards, exercises, withholding, and derivatives.
| Filed / transacted | Reporting owner | Semantics | Shares | Price | Notional | Source |
|---|---|---|---|---|---|---|
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 494 | $393 | $194,250 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 385 | $391 | $150,553 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 723 | $398 | $288,079 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 584 | $397 | $232,128 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin I |
GrossPattern stores immutable raw artifacts, accession-scoped facts, parser and metric versions, dependency edges, quality state, and channel-specific publication rights. A restricted or unknown ancestor blocks the page and API automatically.
SEC source policy ↗Operating income changed +158.3% from the comparable as-filed period.
Operating cash flow changed +138.7% from the comparable as-filed period.
Operating margin changed +1860 basis points from the comparable as-filed period.
Free-cash-flow proxy changed +158.0% from the comparable as-filed period.
Operating income changed +56.6% from the comparable as-filed period.
Gross margin changed +1430 basis points from the comparable as-filed period.
Method note “Materiality” here is an analytical magnitude band, not a legal conclusion. Full filing-text semantic changes remain unpublished while excerpt rights and review thresholds are unresolved.
Latest supported period in this snapshot: 2026-10-02. Duration facts use direct quarterly or annual SEC contexts; GrossPattern does not manufacture missing Q4 values.
0001266824-26-000211| Open Market SaleDirect |
| 407 |
| $392 |
| $159,714 |
| Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 243 | $394 | $95,842 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 303 | $399 | $121,005 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 43 | $401 | $17,263 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 209 | $395 | $82,619 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 317 | $396 | $125,631 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 204 | $390 | $79,568 | Form 4 ↗ |
| Oct 29, 2026Filed Oct 30, 2026 | Cole Martin IDirector | Open Market SaleDirect | 88 | $400 | $35,229 | Form 4 ↗ |
| Oct 21, 2026Filed Oct 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Open Market SaleDirect | 807 | $380 | $306,660 | Form 4 ↗ |
| Oct 20, 2026Filed Oct 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Tax WithholdingDirect | 1,309.71 | $364 | $477,155 | Form 4 ↗ |
| Oct 20, 2026Filed Oct 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Option ExerciseDirect | 14.37 | $0 | $0 | Form 4 ↗ |
| Oct 20, 2026Filed Oct 22, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Option ExerciseDirect | 14.37 | $0 | $0 | Form 4 ↗ |
| Sep 17, 2026Filed Sep 21, 2026 | MASSENGILL MATTHEW EDirector | Grant Or AwardDirect | 10.27 | $0 | $0 | Form 4 ↗ |
| Sep 17, 2026Filed Sep 21, 2026 | DOLUCA TUNCDirector | Grant Or AwardDirect | 0.56 | $0 | $0 | Form 4 ↗ |
| Sep 17, 2026Filed Sep 21, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Grant Or AwardDirect | 27.38 | $0 | $0 | Form 4 ↗ |
| Sep 4, 2026Filed Sep 8, 2026 | Tregillis Cynthia LChief Legal Officer & Corp Sec | Open Market SaleDirect | 432 | $451 | $194,918 | Form 4 ↗ |