Western Digital Corporation (WDC)
Nasdaq: WDC · Computer Storage Devices · San Jose, CA · filing with the SEC since 1994
Who owns Western Digital Corporation
As filed with the SECHolders of 5% or more
3
Vanguard Capital Management holds 7.49% of Common Stock, as its SCHEDULE 13G filed Apr 30, 2026 says.
Directors and officers
16
report now, of 43 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Fmr LLC
SCHEDULE 13G/A · filed Aug 6, 2026 · COMMON STOCK · 10.1% in Jan 8, 2026
JPMorgan Chase & Co.
SCHEDULE 13G/A · filed Apr 22, 2025 · Common Stock, $0.01 Par Value Per Share · 6.7% in Feb 12, 2025
Vanguard Portfolio Management
SCHEDULE 13G/A · filed Jul 31, 2026 · Common Stock · reported falling below 5%, from 5.07% in Apr 29, 2026
Managed Account Advisors LLC
SCHEDULE 13G/A · filed Feb 10, 2026 · Common Stock · reported falling below 5%, from 5.3% in Nov 13, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What WDC reports owning in othersstakes of 5% or more, and other ties
Sandisk Corporation SNDK
SCHEDULE 13G/A · filed May 15, 2026 · Common Stock, $0.01 Par Value Per Share · reported falling below 5%
42 subsidiaries in 21 countries, from the list filed with the 10-K filed Aug 14, 2025.
Insider tradesForm 4
237sales
0purchases
219sales on a scheduled plan
10people selling
$76.8Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 30, 2025 to Oct 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window10 of 43 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Tan Irving | Chief Executive Officer | 39 | $25.3M | 39 | 0 | $0 |
| Gubbi Vidyadhara K | Chief of Global Operations | 9 | $12.9M | 0 | 0 | $0 |
| Cole Martin I | director | 121 | $9.7M | 121 | 0 | $0 |
| Massengill Matthew E | Chairman of the Board | 11 | $9.6M | 11 | 0 | $0 |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | 20 | $7.8M | 18 | 0 | $0 |
| Davis Brian Scott | Chief Sales & Mrktng Officer | 30 | $7.8M | 30 | 0 | $0 |
| Streeter Stephanie A | director | 3 | $2.5M | 0 | 0 | $0 |
| Alexy Kimberly | director | 2 | $600,000 | 0 | 0 | $0 |
| Kiddoo Bruce E | director | 1 | $400,000 | 0 | 0 | $0 |
| Oulman Roxanne | director | 1 | $300,000 | 0 | 0 | $0 |