Quick Takeaways
- WDC - WESTERN DIGITAL CORP has 28 insiders with reported activity on this page.
- Net insider value flow over the last year: -$43,912,516.
- Recent transaction rows are available for direct filing-level review.
- Info
- Significant Ownership
- Insider Ownership
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 28 Insiders of WESTERN DIGITAL CORP
- Symbol
- WDC on Nasdaq
- Location
- San Jose, CA
What Changed
- Buy value: ; sell value: $43,912,516.
- Net share flow: -239,067.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$43,912,516.
Buys
$0
Shares: 0
Insiders: 0
Sells
$43,912,516
Shares: 239,067
Insiders: 9
Net
-$43,912,516
Shares: -239,067
Insiders: -9
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 108,795 | $0 | $28,687,426 | -$28,687,426 |
| 3-6 | 0 | 67,189 | $0 | $10,646,060 | -$10,646,060 |
| 6-9 | 0 | 49,730 | $0 | $3,921,576 | -$3,921,576 |
| 9-12 | 0 | 13,353 | $0 | $657,454 | -$657,454 |
WESTERN DIGITAL CORP executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Irving Tan | Chief Executive Officer, Director | $106,488,700 | -$9,325,303 | -8.1% | Mixed | 20 Mar 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 | ||
| Cynthia L. Tregillis | Chief Legal Officer & Corp Sec | $32,758,692 | -$6,124,238 | -16% | Filing P/S | 18 Mar 2026 |
| Kris Sennesael | Chief Financial Officer | $26,358,472 | Mixed | 18 Mar 2026 | ||
| Vidyadhara K. Gubbi | Chief of Global Operations | $25,347,644 | -$10,387,712 | -29% | Filing P/S | 18 Mar 2026 |
| Wissam G. Jabre | Evp & Cfo | $24,379,857 | Mixed | 28 Feb 2025 | ||
| Brian Scott Davis | Chief Sales & Mrktng Officer | $19,908,210 | -$2,791,603 | -12% | Mixed | 20 Mar 2026 |
| 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 | ||
| Gene M. Zamiska | SVP & Princ. Acctg Officer | $2,218,682 | -$577,892 | -21% | Filing P/S | 18 Sep 2025 |
| Brad David Feller | SVP & Chief Accounting Officer | $1,368,453 | Mixed | 18 Mar 2026 | ||
| Thomas Caulfield | Director | $1,365,084 | Mixed | 20 Nov 2024 | ||
| Miyuki Suzuki | Director | $1,159,334 | Mixed | 20 Nov 2024 | ||
| Bruce E. Kiddoo | Director | $1,008,301 | Mixed | 18 Mar 2026 | ||
| Roxanne Oulman | Director | $596,524 | -$277,956 | -32% | Filing P/S | 18 Mar 2026 |
| Paula A. Price | Director | $356,199 | Mixed | 31 Jan 2022 | ||
| Reed B. Rayman | Director | Mixed | 23 May 2023 |
Top shareholders of WESTERN DIGITAL CORP (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC |
13F
|
Company |
12%
|
42,348,660
|
$7,295,403,659 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
10%
|
35,509,518
|
$6,117,224,662 | — | 31 Dec 2025 | |
| FMR LLC |
13D/G
13F
|
Company |
10%
|
34,466,664
|
$5,937,572,262 | +$1,733,198,306 | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
4.5%
|
15,695,954
|
$2,703,941,996 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
13D/G
|
Company |
5.3%
from 13D/G
|
14,295,965
|
$2,462,766,329 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
3.5%
|
12,044,651
|
$2,074,931,951 | — | 31 Dec 2025 | |
| MANAGED ACCOUNT ADVISORS LLC |
13D/G
|
— |
2.6%
|
9,026,563
|
$1,914,895,075 | -$1,977,932,052 | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.7%
|
9,282,432
|
$1,593,883,319 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
2.6%
|
8,944,662
|
$1,540,897,488 | — | 31 Dec 2025 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
2.5%
|
8,520,425
|
$1,467,814,250 | — | 31 Dec 2025 | |
| WCM INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
1.9%
|
6,691,209
|
$1,178,054,257 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
1.6%
|
5,701,318
|
$982,166,052 | — | 31 Dec 2025 | |
| Invesco Ltd. |
13F
|
Company |
1.6%
|
5,455,243
|
$939,774,714 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.3%
|
4,578,446
|
$788,728,892 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.3%
|
4,563,476
|
$786,150,010 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.3%
|
4,559,713
|
$785,501,809 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1.3%
|
4,550,821
|
$783,969,933 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.1%
|
3,671,955
|
$632,567,688 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1%
|
3,565,342
|
$614,316,015 | — | 31 Dec 2025 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.86%
|
2,972,703
|
$512,107,498 | — | 31 Dec 2025 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
0.81%
|
2,809,409
|
$483,976,888 | — | 31 Dec 2025 | |
| FRED ALGER MANAGEMENT, LLC |
13F
|
Company |
0.77%
|
2,684,341
|
$462,431,424 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
0.75%
|
2,611,856
|
$449,945,000 | — | 31 Dec 2025 | |
| Amundi |
13F
|
Individual |
0.69%
|
2,399,736
|
$413,402,520 | — | 31 Dec 2025 | |
| Maple Rock Capital Partners Inc. |
13F
|
Company |
0.69%
|
2,381,525
|
$410,265,312 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.65%
|
2,266,709
|
$390,485,959 | — | 31 Dec 2025 | |
| DEUTSCHE BANK AG\ |
13F
|
Company |
0.64%
|
2,231,609
|
$384,439,282 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.6%
|
2,073,036
|
$357,121,925 | — | 31 Dec 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.59%
|
2,033,555
|
$350,320,519 | — | 31 Dec 2025 | |
| ROYAL BANK OF CANADA |
13F
|
Company |
0.57%
|
1,983,053
|
$341,619,000 | — | 31 Dec 2025 | |
| AMF Tjanstepension AB |
13F
|
Company |
0.51%
|
1,767,959
|
$304,566,297 | — | 31 Dec 2025 | |
| National Pension Service |
13F
|
Company |
0.49%
|
1,691,659
|
$291,422,096 | — | 31 Dec 2025 | |
| ALLIANCEBERNSTEIN L.P. |
13F
|
Company |
0.47%
|
1,629,027
|
$280,632,481 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.44%
|
1,526,384
|
$262,950,172 | — | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.4%
|
1,398,080
|
$240,847,242 | — | 31 Dec 2025 | |
| Robeco Institutional Asset Management B.V. |
13F
|
Company |
0.4%
|
1,376,751
|
$237,172,895 | — | 31 Dec 2025 | |
| CITIGROUP INC |
13F
|
Company |
0.39%
|
1,359,209
|
$234,150,990 | — | 31 Dec 2025 | |
| Castle Hook Partners LP |
13F
|
Company |
0.38%
|
1,325,670
|
$228,373,171 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.38%
|
1,319,766
|
$227,356,089 | — | 31 Dec 2025 | |
| HSBC HOLDINGS PLC |
13F
|
Company |
0.37%
|
1,267,785
|
$218,092,781 | — | 31 Dec 2025 | |
| BANK OF NOVA SCOTIA |
13F
|
Company |
0.33%
|
1,128,963
|
$194,486,456 | — | 31 Dec 2025 | |
| NOMURA ASSET MANAGEMENT CO LTD |
13F
|
Company |
0.32%
|
1,122,095
|
$193,303,305 | — | 31 Dec 2025 | |
| Capital World Investors |
13F
|
Company |
0.31%
|
1,063,607
|
$183,227,578 | — | 31 Dec 2025 | |
| BANK OF MONTREAL /CAN/ |
13F
|
Company |
0.3%
|
1,031,052
|
$177,619,328 | — | 31 Dec 2025 | |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
|
Company |
0.3%
|
1,025,447
|
$176,654,000 | — | 31 Dec 2025 | |
| PRUDENTIAL FINANCIAL INC |
13F
|
Company |
0.29%
|
1,019,153
|
$175,569,487 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.29%
|
992,731
|
$171,024,539 | — | 31 Dec 2025 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
0.29%
|
992,533
|
$170,983,660 | — | 31 Dec 2025 | |
| Swiss National Bank |
13F
|
Company |
0.27%
|
950,807
|
$163,795,522 | — | 31 Dec 2025 | |
| Holocene Advisors, LP |
13F
|
Company |
0.27%
|
934,982
|
$161,069,349 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for WESTERN DIGITAL CORP
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Irving Tan | WDC | Common Stock | Tax liability | -0.17% | -1,042 | 618,150 | 20 Mar 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 0.01% | 49 | 619,192 | 20 Mar 2026 | Direct | ||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -4.94% | -49.34 | 949 | 20 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -0.82% | -961 | 115,564 | 20 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Options Exercise | 0.01% | 7 | 116,525 | 20 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Options Exercise | -3.35% | -7.29 | 210 | 20 Mar 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Award | 13.4% | 40.71 | 345 | 18 Mar 2026 | Direct | ||
| Irving Tan | WDC | Dividend Equivalent Rights | Award | 14% | 123 | 998 | 18 Mar 2026 | Direct | ||
| Stephanie A. Streeter | WDC | Dividend Equivalent Rights | Award | 57.5% | 0.65 | 2 | 18 Mar 2026 | Direct | ||
| Kris Sennesael | WDC | Dividend Equivalent Rights | Award | 13.7% | 69.48 | 578 | 18 Mar 2026 | Direct | ||
| Roxanne Oulman | WDC | Dividend Equivalent Rights | Award | 57.5% | 0.65 | 2 | 18 Mar 2026 | Direct | ||
| Matthew E. Massengill | WDC | Dividend Equivalent Rights | Award | 12.8% | 11.88 | 105 | 18 Mar 2026 | Direct | ||
| Bruce E. Kiddoo | WDC | Dividend Equivalent Rights | Award | 57.5% | 0.65 | 2 | 18 Mar 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Award | 13.6% | 34.66 | 290 | 18 Mar 2026 | Direct | ||
| Brad David Feller | WDC | Dividend Equivalent Rights | Award | 57.6% | 4.07 | 11 | 18 Mar 2026 | Direct | ||
| Tunc Doluca | WDC | Dividend Equivalent Rights | Award | 57.5% | 0.65 | 2 | 18 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Award | 13.7% | 26.16 | 217 | 18 Mar 2026 | Direct | ||
| Martin I. Cole | WDC | Dividend Equivalent Rights | Award | 58.1% | 0.79 | 2 | 18 Mar 2026 | Direct | ||
| Kimberly Alexy | WDC | Dividend Equivalent Rights | Award | 57.5% | 0.65 | 2 | 18 Mar 2026 | Direct | ||
| Ahmed Mohammed Shihab | WDC | Dividend Equivalent Rights | Award | 20.2% | 75.76 | 451 | 18 Mar 2026 | Direct | ||
| Ahmed Mohammed Shihab | WDC | Common Stock | Tax liability | -11.1% | -20,595 | 164,319 | 17 Mar 2026 | Direct | ||
| Ahmed Mohammed Shihab | WDC | Common Stock | Options Exercise | 0.11% | 196 | 184,914 | 17 Mar 2026 | Direct | ||
| Ahmed Mohammed Shihab | WDC | Dividend Equivalent Rights | Options Exercise | -34.4% | -197 | 375 | 17 Mar 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Sale | -7.9% | $2,174,858 | $255.32 | -8,518 | 99,276 | 06 Mar 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -7.12% | $2,501,382 | $268.27 | -9,324 | 121,682 | 04 Mar 2026 | Direct |
| Vidyadhara K. Gubbi | WDC | Common Stock | Sale | -8.6% | $2,743,110 | $270.31 | -10,148 | 107,794 | 04 Mar 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Tax liability | -2.09% | -2,798 | 131,006 | 03 Mar 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Options Exercise | 0.02% | 23 | 133,804 | 03 Mar 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Options Exercise | -7.25% | -23.81 | 304 | 03 Mar 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Tax liability | -0.56% | -3,512 | 619,143 | 03 Mar 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 0.01% | 92 | 622,655 | 03 Mar 2026 | Direct | ||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -9.59% | -92.87 | 876 | 03 Mar 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Tax liability | -5.64% | -7,054 | 117,942 | 03 Mar 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Options Exercise | 0.04% | 47 | 124,996 | 03 Mar 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Options Exercise | -15.7% | -47.63 | 255 | 03 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -2.94% | -3,526 | 116,518 | 03 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Options Exercise | 0.02% | 23 | 120,044 | 03 Mar 2026 | Direct | ||
| Brian Scott Davis | WDC | Dividend Equivalent Rights | Options Exercise | -11.1% | -23.81 | 191 | 03 Mar 2026 | Direct | ||
| Martin I. Cole | WDC | Common Stock | Sale | -16.9% | $1,630,002 | $271.67 | -6,000 | 29,433 | 02 Mar 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Sale | -0.16% | $61,228 | $286.11 | -214 | 133,781 | 26 Feb 2026 | Direct |
| Cynthia L. Tregillis | WDC | Common Stock | Tax liability | -0.57% | -770 | 133,995 | 25 Feb 2026 | Direct | ||
| Cynthia L. Tregillis | WDC | Common Stock | Options Exercise | 6 | 134,765 | 25 Feb 2026 | Direct | |||
| Cynthia L. Tregillis | WDC | Dividend Equivalent Rights | Options Exercise | -1.96% | -6.56 | 328 | 25 Feb 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Tax liability | -0.07% | -425 | 622,563 | 25 Feb 2026 | Direct | ||
| Irving Tan | WDC | Common Stock | Options Exercise | 27 | 622,988 | 25 Feb 2026 | Direct | |||
| Irving Tan | WDC | Dividend Equivalent Rights | Options Exercise | -2.71% | -27.02 | 968 | 25 Feb 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Tax liability | -0.8% | -1,010 | 124,949 | 25 Feb 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Common Stock | Options Exercise | 0.01% | 7 | 125,959 | 25 Feb 2026 | Direct | ||
| Vidyadhara K. Gubbi | WDC | Dividend Equivalent Rights | Options Exercise | -2.49% | -7.72 | 303 | 25 Feb 2026 | Direct | ||
| Brian Scott Davis | WDC | Common Stock | Tax liability | -0.7% | -849 | 120,021 | 25 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.