WDC

WESTERN DIGITAL CORP

Computer Storage DevicesNasdaqLarge accelerated filer

Total Trades

58

Buys

0

Sells

47

Largest Trade

N/A

Insiders

12

Institutional Funds

1,004

Inst. Value

$1M+

Activist Filings

19

Insider Trades

InsiderTitleTypeValueSharesPriceDate
Tregillis Cynthia LChief Legal Office…EXERCISEN/A23Mar 6, 2026
Tregillis Cynthia LChief Legal Office…SELL$1M+9K$268.27Mar 6, 2026
Gubbi Vidyadhara KChief of Global Op…EXERCISEN/A47Mar 6, 2026
Gubbi Vidyadhara KChief of Global Op…SELL$1M+10K$270.31Mar 6, 2026
Cole Martin IDirectorSELL$1M+6K$271.67Mar 4, 2026
Tregillis Cynthia LChief Legal Office…EXERCISEN/A6Feb 27, 2026
Tregillis Cynthia LChief Legal Office…SELL$50K–$100K214$286.11Feb 27, 2026
Tregillis Cynthia LChief Legal Office…SELL$100K–$500K438$282.33Feb 24, 2026
Tregillis Cynthia LChief Legal Office…EXERCISEN/A12Feb 24, 2026
Tregillis Cynthia LChief Legal Office…SELL$1M+7K$270.49Feb 6, 2026
MASSENGILL MATTHEW EDirectorSELL$1M+37K$260.43Feb 6, 2026
Tan IrvingCEOSELL$1M+20K$255.44Feb 4, 2026
Tregillis Cynthia LChief Legal Office…SELL$100K–$500K447$229.00Jan 21, 2026
Tregillis Cynthia LChief Legal Office…EXERCISEN/A11Jan 21, 2026
Gubbi Vidyadhara KChief of Global Op…SELL$1M+23K$163.16Dec 8, 2025
Alexy KimberlyDirectorSELL$100K–$500K2K$160.08Dec 8, 2025
Tregillis Cynthia LChief Legal Office…SELL$100K–$500K3K$160.57Dec 3, 2025
Cole Martin IDirectorSELL$500K+6K$162.62Dec 3, 2025
Oulman RoxanneDirectorSELL$100K–$500K2K$154.42Nov 26, 2025
Alexy KimberlyDirectorSELL$100K–$500K2K$154.00Nov 26, 2025
Cole Martin IDirectorSELL$1M+10K$161.32Nov 7, 2025
Tan IrvingCEOSELL$1M+20K$150.69Nov 5, 2025
Gubbi Vidyadhara KChief of Global Op…SELL$1M+11K$90.29Sep 5, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K353$80.90Aug 28, 2025
Zamiska Gene M.SVP & Princ. Acctg…EXERCISEN/A1Aug 28, 2025
Zamiska Gene M.SVP & Princ. Acctg…EXERCISEN/A2Aug 27, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$50K–$100K814$79.10Aug 27, 2025
Zamiska Gene M.SVPSELL$100K–$500K5K$75.35Aug 25, 2025
Zamiska Gene M.SVPEXERCISEN/A6Aug 25, 2025
Tregillis Cynthia LChief Legal Office…SELL$1M+14K$74.78Aug 25, 2025
Tregillis Cynthia LChief Legal Office…EXERCISEN/A18Aug 25, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$1K–$15K245$58.01Jun 17, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$50K–$100K2K$54.88Jun 6, 2025
Tan IrvingCEOSELL$500K+11K$48.19May 14, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K456$43.37Mar 13, 2025
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K313$72.63Dec 2, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K658$69.99Nov 27, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K376$64.47Nov 22, 2024
SODERBERY ROBERTEVP & GMSELL$1M+31K$68.01Oct 30, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$100K–$500K2K$69.94Oct 28, 2024
Goeckeler DavidCEOSELL$1M+75K$72.58Oct 28, 2024
Goeckeler DavidCEOSELL$1M+75K$70.32Sep 27, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K315$63.32Aug 30, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$100K–$500K3K$61.48Aug 27, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K417$64.89Aug 22, 2024
Zamiska Gene M.SVP & Princ. Acctg…GRANTN/A13KAug 22, 2024
Zamiska Gene M.SVPSELL$15K–$50K219$78.00Jun 18, 2024
SODERBERY ROBERTEVP & GMSELL$1M+27K$73.48Jun 6, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K416$71.88May 22, 2024
Zamiska Gene M.SVP & Princ. Acctg…SELL$15K–$50K443$75.00Apr 9, 2024
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Activist & 5%+ Owners

SC 13D/13G filings — investors holding 5%+ of outstanding shares

MANAGED ACCOUNT ADVISORS LLC

SC 13G/A · Feb 10, 2026

2.6%

9.0M shares

FMR LLC

SC 13G/A · Jan 8, 2026

10.1%

34.5M shares

MANAGED ACCOUNT ADVISORS LLC

SC 13G/A · Nov 14, 2025

5.3%

18.4M shares

FMR LLC

SC 13G/A · Nov 5, 2025

7.0%

24.4M shares

MANAGED ACCOUNT ADVISORS LLC

SC 13G · Aug 14, 2025

6.4%

22.2M shares

FMR LLC

SC 13G/A · Aug 6, 2025

9.5%

33.2M shares

FMR LLC

SC 13G/A · May 12, 2025

8.1%

28.1M shares

JPMORGAN CHASE & CO.

SC 13G/A · Apr 22, 2025

5.3%

18.5M shares

JPMORGAN CHASE & CO.

SC 13G/A · Feb 12, 2025

6.7%

23.3M shares

FMR LLC

SC 13G/A · Feb 12, 2025

6.9%

24.0M shares

3.5%

12.0M shares

FMR LLC

SC 13G · Nov 12, 2024

5.6%

19.4M shares

JPMORGAN CHASE & CO. 13-2624428

SC 13G · Oct 15, 2024

5.0%

17.5M shares

7.5%

24.2M shares

The Vanguard Group - 23-1945930

SC 13G/A · Feb 13, 2024

11.9%

38.6M shares

BlackRock, Inc.

SC 13G/A · Jan 25, 2024

8.5%

27.7M shares

6.5%

20.7M shares

BlackRock, Inc.

SC 13G/A · Feb 10, 2023

8.2%

26.0M shares

BlackRock, Inc.

SC 13G/A · Mar 11, 2022

8.3%

25.8M shares

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