WESTERN DIGITAL CORP (WDC)

Data as of Sep 21, 2026, from SEC Form 4 filings.

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Cynthia L. Tregillis - Officer
Open-market sale$195K
Sep 4, 2026
Vidyadhara K. Gubbi

About WESTERN DIGITAL CORP (WDC)

Western Digital is a leading vertically integrated supplier of hard disk drives. The HDD market is a practical duopoly, with Western Digital and Seagate being the two largest players. Western Digital designs and manufactures its HDDs, with much of the manufacturing and workforce located in Asia. The primary consumers of HDDs are data centers.

Headquarters: SAN JOSE, CA
Employees: 40,000
Listed: 1978
Exchange: Nasdaq
Sector: Information Technology

https://www.westerndigital.com SEC filings for WDC on EDGAR

WDC Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	18	30,421	$13.64M
Grant or award	22	46,535
Option exercise	48	760.59

WDC insider transactions (Form 4)

224 Form 4 filings on record, the earliest from Oct 28, 2024, newest first. Filing history page 2 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
Aug 20, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Common Stock	4^{footnote F1}	$0.00	-
Aug 20, 2026	Vidyadhara K. Gubbi - Officer	Tax withholding / forfeiture	Common Stock	592^{footnote F2}	$469.05	$278K
Aug 21, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Common Stock	5^{footnote F1}	$0.00	-
Aug 21, 2026	Vidyadhara K. Gubbi - Officer	Tax withholding / forfeiture	Common Stock	694^{footnote F2}	$459.44	$319K
Aug 20, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Dividend Equivalent Rights	4.75	$0.00	-
Aug 21, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Dividend Equivalent Rights	5.56	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Aug 20, 2026	Brian Scott Davis - Officer	Option exercise	Common Stock	5^{footnote F1}	$0.00	-
Aug 20, 2026	Brian Scott Davis - Officer	Tax withholding / forfeiture	Common Stock	716^{footnote F2}	$469.05	$336K
Aug 21, 2026	Brian Scott Davis - Officer	Option exercise	Common Stock	4^{footnote F1}	$0.00	-
Aug 21, 2026	Brian Scott Davis - Officer	Tax withholding / forfeiture	Common Stock	593^{footnote F2}	$459.44	$272K
Aug 20, 2026	Brian Scott Davis - Officer	Option exercise	Dividend Equivalent Rights	5.74	$0.00	-
Aug 21, 2026	Brian Scott Davis - Officer	Option exercise	Dividend Equivalent Rights	4.75	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	2,478	$441.48^{footnote F2}	$1.09M
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	989	$442.22^{footnote F3}	$437K
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	1,840	$443.35^{footnote F4}	$816K
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	1,880	$444.67^{footnote F5}	$836K
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	4,822	$445.45^{footnote F6}	$2.15M
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	6,445	$446.38^{footnote F7}	$2.88M
Aug 11, 2026	Irving Tan - Officer	Open-market sale	Common Stock	1,546	$447.18^{footnote F8}	$691K
Footnote F2 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $440.77 to a high of $441.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $441.94 to a high of $442.73. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $443.00 to a high of $443.91. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F5 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $444.00 to a high of $444.94. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F6 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $445.00 to a high of $445.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F7 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $446.00 to a high of $446.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F8 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $447.00 to a high of $447.88. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Jul 28, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	160	$462.30^{footnote F3}	$74K
Jul 28, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	32	$465.12^{footnote F4}	$15K
Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $462.03 to a high of $462.50. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $465.04 to a high of $465.21. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Jul 20, 2026	Cynthia L. Tregillis - Officer	Option exercise	Common Stock	13^{footnote F1}	$0.00	-
Jul 20, 2026	Cynthia L. Tregillis - Officer	Tax withholding / forfeiture	Common Stock	1,309^{footnote F2}	$487.42	$638K
Jul 21, 2026	Cynthia L. Tregillis - Officer	Open-market sale	Common Stock	808	$529.63	$428K
Jul 20, 2026	Cynthia L. Tregillis - Officer	Option exercise	Dividend Equivalent Rights	13.2	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 17, 2026	Cynthia L. Tregillis - Officer	Grant or award	Dividend Equivalent Rights	18.64	$0.00	-
Jun 20, 2026	Irving Tan - Officer	Option exercise	Dividend Equivalent Rights	52.11	$0.00	-
Jun 20, 2026	Irving Tan - Officer	Option exercise	Common Stock	52^{footnote F1}	$0.00	-
Jun 20, 2026	Irving Tan - Officer	Tax withholding / forfeiture	Common Stock	1,090^{footnote F2}	$746.23	$813K
Jun 17, 2026	Irving Tan - Officer	Grant or award	Dividend Equivalent Rights	56.5	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 17, 2026	Stephanie A. Streeter - Director	Grant or award	Dividend Equivalent Rights	0.33	$0.00	-
Jun 17, 2026	Ahmed Mohammed Shihab - Officer	Tax withholding / forfeiture	Common Stock	5,149^{footnote F3}	$712.13	$3.67M
Jun 17, 2026	Ahmed Mohammed Shihab - Officer	Option exercise	Dividend Equivalent Rights	51.9	$0.00	-
Jun 17, 2026	Ahmed Mohammed Shihab - Officer	Grant or award	Dividend Equivalent Rights	27.92	$0.00	-
Jun 17, 2026	Ahmed Mohammed Shihab - Officer	Option exercise	Common Stock	51^{footnote F1}	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 17, 2026	Kris Sennesael - Officer	Grant or award	Dividend Equivalent Rights	27.77	$0.00	-
Jun 17, 2026	Roxanne Oulman - Director	Grant or award	Dividend Equivalent Rights	0.33	$0.00	-
Jun 17, 2026	Matthew E. Massengill - Director	Grant or award	Dividend Equivalent Rights	6.11	$0.00	-
Jun 17, 2026	Bruce E. Kiddoo - Director	Grant or award	Dividend Equivalent Rights	0.33	$0.00	-
Jun 17, 2026	Vidyadhara K. Gubbi - Officer	Grant or award	Dividend Equivalent Rights	14.08	$0.00	-
Jun 17, 2026	Brad Feller - Officer	Grant or award	Dividend Equivalent Rights	2.09	$0.00	-
Jun 17, 2026	Tunc Doluca - Director	Grant or award	Dividend Equivalent Rights	0.33	$0.00	-
Jun 20, 2026	Brian Scott Davis - Officer	Tax withholding / forfeiture	Common Stock	961^{footnote F2}	$746.23	$717K
Jun 17, 2026	Brian Scott Davis - Officer	Grant or award	Dividend Equivalent Rights	11.7	$0.00	-
Jun 20, 2026	Brian Scott Davis - Officer	Option exercise	Dividend Equivalent Rights	7.7	$0.00	-
Jun 20, 2026	Brian Scott Davis - Officer	Option exercise	Common Stock	7^{footnote F1}	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 17, 2026	Manuvir Das - Director	Grant or award	Dividend Equivalent Rights	0.16	$0.00	-
Jun 17, 2026	Martin I. Cole - Director	Grant or award	Dividend Equivalent Rights	0.4	$0.00	-
Jun 17, 2026	Kimberly Alexy - Director	Grant or award	Dividend Equivalent Rights	0.33	$0.00	-
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	48	$528.07^{footnote F3}	$25K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	64	$530.27^{footnote F4}	$34K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	48	$531.62^{footnote F5}	$26K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	96	$533.01^{footnote F6}	$51K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	48	$533.97^{footnote F7}	$26K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	16	$534.90	$9K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	112	$536.27^{footnote F8}	$60K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	71	$537.73^{footnote F9}	$38K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	57	$538.81^{footnote F10}	$31K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	32	$539.82^{footnote F11}	$17K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	16	$540.96	$9K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	48	$542.79^{footnote F12}	$26K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	48	$543.92^{footnote F13}	$26K
Jun 9, 2026	Martin I. Cole - Director	Open-market sale	Common Stock	16	$544.95	$9K
Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $527.94 to a high of $528.23. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $530.02 to a high of $530.72. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F5 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $531.13 to a high of $531.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F6 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $532.49 to a high of $533.47. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F7 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $533.66 to a high of $534.45. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F8 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $536.01 to a high of $536.58. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F9 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $537.28 to a high of $538.04. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F10 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $538.45 to a high of $538.98. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F11 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $539.64 to a high of $539.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F12 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $542.19 to a high of $543.18. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR Footnote F13 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $543.42 to a high of $544.35. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Jun 3, 2026	Cynthia L. Tregillis - Officer	Option exercise	Common Stock	6^{footnote F1}	$0.00	-
Jun 3, 2026	Cynthia L. Tregillis - Officer	Tax withholding / forfeiture	Common Stock	699^{footnote F3}	$594.11	$415K
Jun 5, 2026	Cynthia L. Tregillis - Officer	Open-market sale	Common Stock	432	$545.60	$236K
Jun 3, 2026	Cynthia L. Tregillis - Officer	Option exercise	Dividend Equivalent Rights	6.68	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 3, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Common Stock	13^{footnote F1}	$0.00	-
Jun 3, 2026	Vidyadhara K. Gubbi - Officer	Tax withholding / forfeiture	Common Stock	1,764^{footnote F2}	$594.11	$1.05M
Jun 3, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Dividend Equivalent Rights	13.37	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 3, 2026	Brian Scott Davis - Officer	Option exercise	Common Stock	6^{footnote F1}	$0.00	-
Jun 3, 2026	Brian Scott Davis - Officer	Tax withholding / forfeiture	Common Stock	881^{footnote F3}	$594.11	$523K
Jun 3, 2026	Brian Scott Davis - Officer	Option exercise	Dividend Equivalent Rights	6.68	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
Jun 1, 2026	Vidyadhara K. Gubbi - Officer	Open-market sale	Common Stock	2,475	$556.24	$1.38M
May 28, 2026	Bruce E. Kiddoo - Director	Open-market sale	Common Stock	750	$528.52	$396K
May 26, 2026	Manuvir Das - Director	Grant or award	Common Stock	772	$0.00	-
May 22, 2026	Cynthia L. Tregillis - Officer	Open-market sale	Common Stock	308	$488.61	$150K
May 25, 2026	Cynthia L. Tregillis - Officer	Option exercise	Common Stock	7^{footnote F2}	$0.00	-
May 25, 2026	Cynthia L. Tregillis - Officer	Tax withholding / forfeiture	Common Stock	771^{footnote F3}	$484.28	$373K
May 27, 2026	Cynthia L. Tregillis - Officer	Open-market sale	Common Stock	214	$539.63	$115K
May 25, 2026	Cynthia L. Tregillis - Officer	Option exercise	Dividend Equivalent Rights	7.36	$0.00	-
Footnote F2 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
May 25, 2026	Irving Tan - Officer	Option exercise	Common Stock	30^{footnote F1}	$0.00	-
May 25, 2026	Irving Tan - Officer	Tax withholding / forfeiture	Common Stock	479^{footnote F2}	$484.28	$232K
May 25, 2026	Irving Tan - Officer	Option exercise	Dividend Equivalent Rights	30.33	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
May 25, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Common Stock	8^{footnote F1}	$0.00	-
May 25, 2026	Vidyadhara K. Gubbi - Officer	Tax withholding / forfeiture	Common Stock	1,143^{footnote F2}	$484.28	$554K
May 25, 2026	Vidyadhara K. Gubbi - Officer	Option exercise	Dividend Equivalent Rights	8.67	$0.00	-
Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Recent WDC Form 8-K filings

Read WDC company news

Sep 14, 2026Item 7.01, 8.01, 9.01

Read the filing on SEC EDGAR

Aug 27, 2026Item 3.02

Read the filing on SEC EDGAR

Aug 26, 2026Item 3.02, 8.01

Read the filing on SEC EDGAR

Aug 5, 2026Item 2.02, 9.01

Recent WDC Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Sep 4, 2026	Vidyadhara K. Gubbi	Officer	1,795	$825K	View on EDGAR
Sep 4, 2026	Lock Tregillis Cynthia	Officer	432

Congress trades in WDC

All congress trades

Stock trades in WDC disclosed by members of the U.S. House in the last 12 months, newest first. Values are the ranges as filed.

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Gilbert Ray Cisneros, Jr.Democrat, CA-31	Sale

WDC insider trading FAQ

What is the latest insider trade for WDC?

WESTERN DIGITAL CORP (WDC) had 33 insider filings in the last 90 days, with the most recent on 21 September 2026. The full record for WDC runs to 224 Form 4 filings, the earliest from 28 October 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying WDC stock?

No insider purchases of WDC were filed in the last 90 days.

How many insiders are selling WDC stock?

18 insider sales of WDC were filed in the last 90 days, totaling $13.64M.

Where can I see WDC SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects WDC Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Sep 21, 2026 - Cynthia L. Tregillis view on EDGAR
Sep 21, 2026 - Irving Tan view on EDGAR
Sep 21, 2026 - Stephanie A. Streeter view on EDGAR
Sep 21, 2026 - Ahmed Mohammed Shihab view on EDGAR
Sep 21, 2026 - Kris Sennesael view on EDGAR
Sep 21, 2026 - Roxanne Oulman view on EDGAR
Sep 21, 2026 - Matthew E. Massengill view on EDGAR
Sep 21, 2026 - Bruce E. Kiddoo view on EDGAR
Sep 21, 2026 - Vidyadhara K. Gubbi view on EDGAR

Related companies with recent insider activity

Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where WDC's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

30,421

$13.64M

Grant or award

46,535

Option exercise

760.59

Traded

Insider

Transaction

Security

Price

Value

Aug 20, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Common Stock

4^{footnote F1}

$0.00

Aug 20, 2026

Vidyadhara K. Gubbi - Officer

Tax withholding / forfeiture

Common Stock

592^{footnote F2}

$469.05

$278K

Aug 21, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Common Stock

5^{footnote F1}

$0.00

Aug 21, 2026

Vidyadhara K. Gubbi - Officer

Tax withholding / forfeiture

Common Stock

694^{footnote F2}

$459.44

$319K

Aug 20, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Dividend Equivalent Rights

4.75

$0.00

Aug 21, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Dividend Equivalent Rights

5.56

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Aug 20, 2026

Brian Scott Davis - Officer

Option exercise

Common Stock

5^{footnote F1}

$0.00

Aug 20, 2026

Brian Scott Davis - Officer

Tax withholding / forfeiture

Common Stock

716^{footnote F2}

$469.05

$336K

Aug 21, 2026

Brian Scott Davis - Officer

Option exercise

Common Stock

4^{footnote F1}

$0.00

Aug 21, 2026

Brian Scott Davis - Officer

Tax withholding / forfeiture

Common Stock

593^{footnote F2}

$459.44

$272K

Aug 20, 2026

Brian Scott Davis - Officer

Option exercise

Dividend Equivalent Rights

5.74

$0.00

Aug 21, 2026

Brian Scott Davis - Officer

Option exercise

Dividend Equivalent Rights

4.75

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

2,478

$441.48^{footnote F2}

$1.09M

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

989

$442.22^{footnote F3}

$437K

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

1,840

$443.35^{footnote F4}

$816K

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

1,880

$444.67^{footnote F5}

$836K

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

4,822

$445.45^{footnote F6}

$2.15M

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

6,445

$446.38^{footnote F7}

$2.88M

Aug 11, 2026

Irving Tan - Officer

Open-market sale

Common Stock

1,546

$447.18^{footnote F8}

$691K

Footnote F2 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $440.77 to a high of $441.66. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $441.94 to a high of $442.73. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $443.00 to a high of $443.91. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F5 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $444.00 to a high of $444.94. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F6 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $445.00 to a high of $445.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F7 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $446.00 to a high of $446.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F8 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $447.00 to a high of $447.88. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR

Jul 28, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

160

$462.30^{footnote F3}

$74K

Jul 28, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$465.12^{footnote F4}

$15K

Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $462.03 to a high of $462.50. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $465.04 to a high of $465.21. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR

Jul 20, 2026

Cynthia L. Tregillis - Officer

Option exercise

Common Stock

13^{footnote F1}

$0.00

Jul 20, 2026

Cynthia L. Tregillis - Officer

Tax withholding / forfeiture

Common Stock

1,309^{footnote F2}

$487.42

$638K

Jul 21, 2026

Cynthia L. Tregillis - Officer

Open-market sale

Common Stock

808

$529.63

$428K

Jul 20, 2026

Cynthia L. Tregillis - Officer

Option exercise

Dividend Equivalent Rights

13.2

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 17, 2026

Cynthia L. Tregillis - Officer

Grant or award

Dividend Equivalent Rights

18.64

$0.00

Jun 20, 2026

Irving Tan - Officer

Option exercise

Dividend Equivalent Rights

52.11

$0.00

Jun 20, 2026

Irving Tan - Officer

Option exercise

Common Stock

52^{footnote F1}

$0.00

Jun 20, 2026

Irving Tan - Officer

Tax withholding / forfeiture

Common Stock

1,090^{footnote F2}

$746.23

$813K

Jun 17, 2026

Irving Tan - Officer

Grant or award

Dividend Equivalent Rights

56.5

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 17, 2026

Stephanie A. Streeter - Director

Grant or award

Dividend Equivalent Rights

0.33

$0.00

Jun 17, 2026

Ahmed Mohammed Shihab - Officer

Tax withholding / forfeiture

Common Stock

5,149^{footnote F3}

$712.13

$3.67M

Jun 17, 2026

Ahmed Mohammed Shihab - Officer

Option exercise

Dividend Equivalent Rights

51.9

$0.00

Jun 17, 2026

Ahmed Mohammed Shihab - Officer

Grant or award

Dividend Equivalent Rights

27.92

$0.00

Jun 17, 2026

Ahmed Mohammed Shihab - Officer

Option exercise

Common Stock

51^{footnote F1}

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 17, 2026

Kris Sennesael - Officer

Grant or award

Dividend Equivalent Rights

27.77

$0.00

Jun 17, 2026

Roxanne Oulman - Director

Grant or award

Dividend Equivalent Rights

0.33

$0.00

Jun 17, 2026

Matthew E. Massengill - Director

Grant or award

Dividend Equivalent Rights

6.11

$0.00

Jun 17, 2026

Bruce E. Kiddoo - Director

Grant or award

Dividend Equivalent Rights

0.33

$0.00

Jun 17, 2026

Vidyadhara K. Gubbi - Officer

Grant or award

Dividend Equivalent Rights

14.08

$0.00

Jun 17, 2026

Brad Feller - Officer

Grant or award

Dividend Equivalent Rights

2.09

$0.00

Jun 17, 2026

Tunc Doluca - Director

Grant or award

Dividend Equivalent Rights

0.33

$0.00

Jun 20, 2026

Brian Scott Davis - Officer

Tax withholding / forfeiture

Common Stock

961^{footnote F2}

$746.23

$717K

Jun 17, 2026

Brian Scott Davis - Officer

Grant or award

Dividend Equivalent Rights

11.7

$0.00

Jun 20, 2026

Brian Scott Davis - Officer

Option exercise

Dividend Equivalent Rights

7.7

$0.00

Jun 20, 2026

Brian Scott Davis - Officer

Option exercise

Common Stock

7^{footnote F1}

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 17, 2026

Manuvir Das - Director

Grant or award

Dividend Equivalent Rights

0.16

$0.00

Jun 17, 2026

Martin I. Cole - Director

Grant or award

Dividend Equivalent Rights

0.4

$0.00

Jun 17, 2026

Kimberly Alexy - Director

Grant or award

Dividend Equivalent Rights

0.33

$0.00

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$528.07^{footnote F3}

$25K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$530.27^{footnote F4}

$34K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$531.62^{footnote F5}

$26K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$533.01^{footnote F6}

$51K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$533.97^{footnote F7}

$26K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$534.90

$9K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

112

$536.27^{footnote F8}

$60K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$537.73^{footnote F9}

$38K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$538.81^{footnote F10}

$31K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$539.82^{footnote F11}

$17K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$540.96

$9K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$542.79^{footnote F12}

$26K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$543.92^{footnote F13}

$26K

Jun 9, 2026

Martin I. Cole - Director

Open-market sale

Common Stock

$544.95

$9K

Footnote F3 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $527.94 to a high of $528.23. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F4 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $530.02 to a high of $530.72. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F5 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $531.13 to a high of $531.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F6 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $532.49 to a high of $533.47. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F7 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $533.66 to a high of $534.45. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F8 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $536.01 to a high of $536.58. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F9 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $537.28 to a high of $538.04. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F10 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $538.45 to a high of $538.98. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F11 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $539.64 to a high of $539.99. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F12 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $542.19 to a high of $543.18. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR
Footnote F13 (price): Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $543.42 to a high of $544.35. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the… Full note on SEC EDGAR

Jun 3, 2026

Cynthia L. Tregillis - Officer

Option exercise

Common Stock

6^{footnote F1}

$0.00

Jun 3, 2026

Cynthia L. Tregillis - Officer

Tax withholding / forfeiture

Common Stock

699^{footnote F3}

$594.11

$415K

Jun 5, 2026

Cynthia L. Tregillis - Officer

Open-market sale

Common Stock

432

$545.60

$236K

Jun 3, 2026

Cynthia L. Tregillis - Officer

Option exercise

Dividend Equivalent Rights

6.68

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 3, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Common Stock

13^{footnote F1}

$0.00

Jun 3, 2026

Vidyadhara K. Gubbi - Officer

Tax withholding / forfeiture

Common Stock

1,764^{footnote F2}

$594.11

$1.05M

Jun 3, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Dividend Equivalent Rights

13.37

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 3, 2026

Brian Scott Davis - Officer

Option exercise

Common Stock

6^{footnote F1}

$0.00

Jun 3, 2026

Brian Scott Davis - Officer

Tax withholding / forfeiture

Common Stock

881^{footnote F3}

$594.11

$523K

Jun 3, 2026

Brian Scott Davis - Officer

Option exercise

Dividend Equivalent Rights

6.68

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Jun 1, 2026

Vidyadhara K. Gubbi - Officer

Open-market sale

Common Stock

2,475

$556.24

$1.38M

May 28, 2026

Bruce E. Kiddoo - Director

Open-market sale

Common Stock

750

$528.52

$396K

May 26, 2026

Manuvir Das - Director

Grant or award

Common Stock

772

$0.00

May 22, 2026

Cynthia L. Tregillis - Officer

Open-market sale

Common Stock

308

$488.61

$150K

May 25, 2026

Cynthia L. Tregillis - Officer

Option exercise

Common Stock

7^{footnote F2}

$0.00

May 25, 2026

Cynthia L. Tregillis - Officer

Tax withholding / forfeiture

Common Stock

771^{footnote F3}

$484.28

$373K

May 27, 2026

Cynthia L. Tregillis - Officer

Open-market sale

Common Stock

214

$539.63

$115K

May 25, 2026

Cynthia L. Tregillis - Officer

Option exercise

Dividend Equivalent Rights

7.36

$0.00

Footnote F2 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F3 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

May 25, 2026

Irving Tan - Officer

Option exercise

Common Stock

30^{footnote F1}

$0.00

May 25, 2026

Irving Tan - Officer

Tax withholding / forfeiture

Common Stock

479^{footnote F2}

$484.28

$232K

May 25, 2026

Irving Tan - Officer

Option exercise

Dividend Equivalent Rights

30.33

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

May 25, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Common Stock

8^{footnote F1}

$0.00

May 25, 2026

Vidyadhara K. Gubbi - Officer

Tax withholding / forfeiture

Common Stock

1,143^{footnote F2}

$484.28

$554K

May 25, 2026

Vidyadhara K. Gubbi - Officer

Option exercise

Dividend Equivalent Rights

8.67

$0.00

Footnote F1 (shares): The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the… Full note on SEC EDGAR
Footnote F2 (shares): Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).

Filed

Filer

Relationship

Market value

Notice

Sep 4, 2026

Vidyadhara K. Gubbi

Officer

1,795

$825K

View on EDGAR

Sep 4, 2026

Lock Tregillis Cynthia

Officer

432

Member	Type	Traded	Disclosed	Value range	Owner	Days to disclose	Filing
Gilbert Ray Cisneros, Jr.Democrat, CA-31	Sale

Member

Type

Traded

Disclosed

Value range

Owner

Days to disclose

Filing

Gilbert Ray Cisneros, Jr.Democrat, CA-31

Sale