WESTERN DIGITAL CORPORATION
WESTERN DIGITAL CORPORATION is a registered legal entity registered in United States under P09519, and its current status with Florida Department of State — Sunbiz is inactive. The company was incorporated on 25 March 1986 and lists its registered address as IRVINE, United States. 5 shareholders are on record for WESTERN DIGITAL CORPORATION, and since every one of them is a company rather than an individual, this particular filing does not on its own establish an ultimate beneficial owner (UBO) — identifying one would mean tracing the ownership of each shareholding company in turn. This profile is sourced directly from Florida Department of State — Sunbiz and was last updated on 11 August 2026.
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Shareholders
5
Five shareholders are currently on record for WESTERN DIGITAL CORPORATION, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing.
The largest of these is VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund, holding 3% — the largest recorded stake — followed by Fidelity Select Portfolios-Select Semiconductors Portfolio at 1.8%; the remaining 3 shareholders shown hold smaller stakes.
The register reports 8 shareholders in total, though only the top 5 by holding are shown in this view.
Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund | 3% | Florida Department of State — Sunbiz | |
| Fidelity Select Portfolios-Select Semiconductors Portfolio | 1.8% | Florida Department of State — Sunbiz | |
| iShares Trust-iShares Core S&P 500 ETF | 1.7% | Florida Department of State — Sunbiz | |
| Fidelity Concord Street Trust-Fidelity 500 Index Fund | 1.7% | Florida Department of State — Sunbiz | |
| SPDR S&P 500 ETF TRUST | 1.6% | Florida Department of State — Sunbiz |
Officers
5
The Vice President of WESTERN DIGITAL CORPORATION on record is MARINARO, EDWARD L.; 5 officers are shown here, filed with Florida Department of State — Sunbiz.
The register reports 30 officers in total, including past appointments, though only the 5 most relevant records are shown here.
Management authority at WESTERN DIGITAL CORPORATION sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Group Structure
WESTERN DIGITAL CORPORATION has no recorded parent company — it sits at the top of its own group structure, with 34 subsidiaries recorded beneath it across 8 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
Those 34 subsidiaries span United States, Philippines, Cayman Islands, South Korea, Canada, Japan, and 2 more jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Four of the 34 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
WESTERN DIGITAL CORPORATION
United States
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Frequently Asked Questions
Who owns WESTERN DIGITAL CORPORATION?
Five shareholders are currently on record for WESTERN DIGITAL CORPORATION, reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is VANGUARD INDEX FUNDS-Vanguard Mid-Cap Index Fund, holding 3% — the largest recorded stake — followed by Fidelity Select Portfolios-Select Semiconductors Portfolio at 1.8%; the remaining 3 shareholders shown hold smaller stakes. Because every shareholder shown is a company rather than an individual, the ownership chain continues above this level, and no beneficial owner can be established from this filing alone.
Who is WESTERN DIGITAL CORPORATION's UBO (Ultimate Beneficial Owner)?
Every shareholder recorded for WESTERN DIGITAL CORPORATION is itself a company rather than a natural person, so no Ultimate Beneficial Owner (UBO) is identified at this level; establishing one would require tracing the ownership of each shareholding company in turn.
How many shareholders does WESTERN DIGITAL CORPORATION have on record?
5 shareholders are shown on record for WESTERN DIGITAL CORPORATION. The register reports 8 in total; only the top 5 by holding are shown here.
What is WESTERN DIGITAL CORPORATION's company registration number?
WESTERN DIGITAL CORPORATION's registration number is P09519, filed with Florida Department of State — Sunbiz in United States. Its current status on the register is inactive.
Is WESTERN DIGITAL CORPORATION still an active company?
WESTERN DIGITAL CORPORATION's status on Florida Department of State — Sunbiz is listed as inactive, not currently active.
When was WESTERN DIGITAL CORPORATION incorporated?
WESTERN DIGITAL CORPORATION was incorporated on 25 March 1986, according to Florida Department of State — Sunbiz.
What is WESTERN DIGITAL CORPORATION's registered address?
The registered address on file for WESTERN DIGITAL CORPORATION is IRVINE, United States.
Who are the officers/directors of WESTERN DIGITAL CORPORATION?
The Vice President of WESTERN DIGITAL CORPORATION on record is MARINARO, EDWARD L.; 5 officers are shown here, filed with Florida Department of State — Sunbiz. Management authority at WESTERN DIGITAL CORPORATION sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does WESTERN DIGITAL CORPORATION have a parent company or subsidiaries?
WESTERN DIGITAL CORPORATION has no recorded parent company — it sits at the top of its own group structure, with 34 subsidiaries recorded beneath it across 8 jurisdictions. Those 34 subsidiaries span United States, Philippines, Cayman Islands, South Korea, Canada, Japan, and 2 more jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. Four of the 34 go a level deeper still, with their own further subsidiaries recorded beneath them — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to WESTERN DIGITAL CORPORATION's ownership over time?
This profile reflects a point-in-time snapshot from Florida Department of State — Sunbiz. Zavia's monitoring API can track changes to WESTERN DIGITAL CORPORATION's registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access WESTERN DIGITAL CORPORATION's data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like WESTERN DIGITAL CORPORATION's registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from Florida Department of State — Sunbiz and was last synced on 11 August 2026.