Comparable stake leader
FMR LLC
SEC ownership of WESTERN DIGITAL CORP
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000106040.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
- Public ticker
- WDC on Nasdaq
- Parsed ownership sources
- 13F, 13D/G, and 3/4/5
- Largest SEC-reported holder
- FMR LLC
- Latest 13D/G holder
- FMR LLC
- Latest parsed ownership date
- 26 May 2026
- Issuer CIK
- 0000106040
- Issuer location
- San Jose, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
2 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of WESTERN DIGITAL CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 10%
13D/G row: FMR LLC
Showing 1-8 of 50 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 10%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 5
FMR LLC
10%
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
JPMORGAN CHASE & CO
5.3%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.1%
MANAGED ACCOUNT ADVISORS LLC
2.6%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13F
13D/G
Company
|
10%
from 13D/G
|
$8,553,818,190
31,623,418 shares
|
— | 31 Mar 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$6,871,235,019
25,402,917 shares
|
$0 | 31 Mar 2026 |
| JPMORGAN CHASE & CO |
13F
13D/G
Company
|
5.3%
from 13D/G
|
$4,407,282,917
17,512,148 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
Vanguard Portfolio Management · Company
|
5.1%
|
$4,657,060,511
17,217,120 shares
|
$0 | 31 Mar 2026 |
| MANAGED ACCOUNT ADVISORS LLC |
13D/G
|
2.6%
|
$1,914,895,075
9,026,563 shares
|
-$1,977,932,052 | 31 Dec 2025 |
| Manuvir Das |
3/4/5
Director
|
0%
|
$208,818
772 shares
|
— | 26 May 2026 |
| BlackRock, Inc. |
13F
Company
|
11%
|
$9,675,216,961
35,769,222 shares
|
— | 31 Mar 2026 |
| STATE STREET CORP |
13F
Company
|
4.6%
|
$4,183,335,045
15,465,766 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$60,903,949.
Buys
$0
Insiders: 0
Sells
$60,903,949
Insiders: 10
Net
-$60,903,949
Shares: -266,578
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 266,578
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 47,408 | $0 | $19,714,645 | -$19,714,645 |
| 3-6 | 0 | 109,220 | $0 | $28,016,281 | -$28,016,281 |
| 6-9 | 0 | 58,246 | $0 | $9,142,346 | -$9,142,346 |
| 9-12 | 0 | 51,704 | $0 | $4,030,676 | -$4,030,676 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 29 reporting-owner rows connected to WESTERN DIGITAL CORP. Open a relationship link for the CIK-to-CIK filing trail.
Rows
29
Largest Forms 3/4/5 holder
Irving Tan
Net 12M change
-$60,903,950
Latest report
01 Jun 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Irving Tan | Chief Executive Officer, Director | $161,483,611 | -$17,013,814 | -9.5% | Median | 25 May 2026 |
| Cynthia L. Tregillis | Chief Legal Officer & Corp Sec | $63,221,431 | -$6,575,734 | -9.4% | Filing P/S | 22 May 2026 |
| David Goeckeler | Chief Executive Officer, Director | $58,079,665 | Mixed | 27 Nov 2024 | ||
| Ahmed Mohammed Shihab | Chief Product Officer | $47,808,613 | Mixed | 17 Mar 2026 | ||
| Vidyadhara K. Gubbi | Chief of Global Operations | $47,366,060 | -$13,835,853 | -23% | Filing P/S | 01 Jun 2026 |
| Kris Sennesael | Chief Financial Officer | $45,911,079 | Median | 20 May 2026 | ||
| Brian Scott Davis | Chief Sales & Mrktng Officer | $27,941,617 | -$7,798,498 | -22% | Median | 25 May 2026 |
| Wissam G. Jabre | Evp & Cfo | $24,379,857 | Mixed | 28 Feb 2025 | ||
| Srinivasan Sivaram | President, Tech & Strategy | $14,649,947 | Mixed | 03 Sep 2023 | ||
| Robert Soderbery | EVP & GM, Flash Business | $9,505,210 | Mixed | 27 Nov 2024 | ||
| Michael Charles Ray | EVP, Chief Legal Officer & Sec | $8,403,758 | Mixed | 27 Nov 2023 | ||
| Martin I. Cole | Director | $8,299,811 | -$4,218,910 | -34% | Filing P/S | 18 Mar 2026 |
| Sean Hunkler | EVP, Global Operations | $7,352,910 | Mixed | 03 Sep 2021 | ||
| Robert K. Eulau | Evp & Cfo | $6,151,274 | Mixed | 03 Sep 2021 | ||
| Stephanie A. Streeter | Director | $5,800,354 | Mixed | 18 Mar 2026 | ||
| Tunc Doluca | Director | $5,447,018 | Mixed | 18 Mar 2026 | ||
| Matthew E. Massengill | Director | $5,064,221 | -$9,616,466 | -66% | Mixed | 18 Mar 2026 |
| Don R. Bennett | Interim CFO | $4,333,763 | Mixed | 06 Mar 2025 | ||
| Kimberly Alexy | Director | $4,296,199 | -$592,437 | -12% | Mixed | 18 Mar 2026 |
| Lori S. Sundberg | EVP & Chief Human Res Officer | $2,964,552 | Mixed | 06 Aug 2021 |
Recent insider transactions for WESTERN DIGITAL CORP
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Vidyadhara K. Gubbi | WDC | Common Stock | Sale | -2.82% | $1,376,694 | $556.24 | -2,475 | 85,154 | 01 Jun 2026 | Direct |
| Bruce E. Kiddoo | WDC | Common Stock | Sale | -16.1% | $396,390 | $528.52 | -750 | 3,903 | 28 May 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -0.18% | $115,481 | $539.63 | -214 | 117,157 | 27 May 2026 | Direct |
| Manuvir Das | WDC | Common Stock | Award | 772 | 772 | 26 May 2026 | Direct | |||
| Cynthia L. Tregillis | WDC | Common Stock | Tax liability | -0.65% | -771 | 117,371 | 25 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Options Exercise | 0.01% | 7 | 118,142 | 25 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Options Exercise | -2.31% | -7.36 | 311 | 25 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Tax liability | -0.08% | -479 | 597,004 | 25 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 0.01% | 30 | 597,483 | 25 May 2026 | Direct | ||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -3.32% | -30.33 | 882 | 25 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Tax liability | -1.29% | -1,143 | 87,629 | 25 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Options Exercise | 0.01% | 8 | 88,772 | 25 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Options Exercise | -3.54% | -8.67 | 236 | 25 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -0.93% | -971 | 103,300 | 25 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Options Exercise | 0.01% | 7 | 104,271 | 25 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Options Exercise | -3.68% | -7.36 | 193 | 25 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -0.26% | $150,492 | $488.61 | -308 | 118,135 | 22 May 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -0.09% | $48,640 | $458.87 | -106 | 118,443 | 21 May 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Tax liability | -0.93% | -1,108 | 118,549 | 21 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Options Exercise | 0.01% | 10 | 119,657 | 21 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Options Exercise | -3.22% | -10.59 | 318 | 21 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Tax liability | -0.1% | -587 | 597,453 | 21 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 23 | 598,040 | 21 May 2026 | Direct | |||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -2.53% | -23.68 | 913 | 21 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Tax liability | -0.77% | -693 | 88,764 | 21 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Options Exercise | 0.01% | 5 | 89,457 | 21 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Options Exercise | -2.1% | -5.26 | 245 | 21 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -0.57% | -593 | 104,264 | 21 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Options Exercise | 4 | 104,857 | 21 May 2026 | Direct | |||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Options Exercise | -2.2% | -4.5 | 200 | 21 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Tax liability | -0.32% | -379 | 119,647 | 20 May 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Options Exercise | 3 | 120,026 | 20 May 2026 | Direct | |||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Options Exercise | -1.09% | -3.63 | 329 | 20 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Tax liability | -0.02% | -145 | 598,017 | 20 May 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 12 | 598,162 | 20 May 2026 | Direct | |||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -1.32% | -12.56 | 936 | 20 May 2026 | Direct | ||
| Kris Sennesael | WDC | Common Stock | Tax liability | -9.77% | -18,374 | 169,733 | 20 May 2026 | Direct | ||
| Kris Sennesael | WDC | Common Stock | Options Exercise | 0.08% | 141 | 188,107 | 20 May 2026 | Direct | ||
| Kris Sennesael | WDC | Dividend Equivalent Rights | Options Exercise | -24.5% | -142 | 436 | 20 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Tax liability | -0.66% | -593 | 89,452 | 20 May 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Options Exercise | 4 | 90,045 | 20 May 2026 | Direct | |||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Options Exercise | -1.77% | -4.5 | 250 | 20 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -0.68% | -716 | 104,853 | 20 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Options Exercise | 5 | 105,569 | 20 May 2026 | Direct | |||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Options Exercise | -2.58% | -5.43 | 205 | 20 May 2026 | Direct | ||
| Bruce E. Kiddoo | WDC | Common Stock | Gift | -2.1% | -100 | 4,653 | 15 May 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Sale | -8.65% | $5,006,895 | $500.69 | -10,000 | 105,564 | 11 May 2026 | Direct |
| Vidyadhara K. Gubbi | WDC | Common Stock | Sale | -4.93% | $2,071,447 | $443.18 | -4,674 | 90,041 | 04 May 2026 | Direct |
| Irving Tan | WDC | Common Stock | Sale | -3.24% | $8,236,864 | $411.84 | -20,000 | 598,150 | 01 May 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -0.3% | $136,884 | $377.09 | -363 | 120,023 | 21 Apr 2026 | Direct |
* marks a reported price that did not pass the local price check.