WESTERN DIGITAL CORP (WDC)
Data as of , from SEC Form 4 filings.
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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.
- SAN JOSE, CA
- 40,000
- 1978
- Nasdaq
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)
101224 Form 4 filings on record, the earliest from Oct 28, 2024, newest first. Filing history page 1 of 3.
| Traded | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Grant or award | Dividend Equivalent Rights | 27.38 | $0.00 | - | ||
| Irving Tan - Officer | Option exercise | Common Stock | 56.76 footnote F1 | $0.00 | - | |
| Irving Tan - Officer | Tax withholding / forfeiture | Common Stock | 1,091 footnote F2 | $441.36 | $482K | |
| Irving Tan - Officer | Grant or award | Dividend Equivalent Rights | 83.3 | $0.00 | - | |
| Irving Tan - Officer | Option exercise | Dividend Equivalent Rights | 56.76 | $0.00 | - | |
| ||||||
| Grant or award | Dividend Equivalent Rights | 0.56 | $0.00 | - | ||
| Option exercise | Common Stock | 56 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 5,150 footnote F2 | $423.87 | $2.18M | ||
| Grant or award | Dividend Equivalent Rights | 42.2 | $0.00 | - | ||
| Option exercise | Dividend Equivalent Rights | 56.52 | $0.00 | - | ||
| ||||||
| Grant or award | Dividend Equivalent Rights | 46.51 | $0.00 | - | ||
| Grant or award | Dividend Equivalent Rights | 0.56 | $0.00 | - | ||
| Grant or award | Dividend Equivalent Rights | 10.27 | $0.00 | - | ||
| Bruce E. Kiddoo - Director | Grant or award | Dividend Equivalent Rights | 0.56 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Grant or award | Dividend Equivalent Rights | 21.02 | $0.00 | - | |
| Brad Feller - Officer | Grant or award | Dividend Equivalent Rights | 4.24 | $0.00 | - | |
| Grant or award | Dividend Equivalent Rights | 0.56 | $0.00 | - | ||
| Brian Scott Davis - Officer | Option exercise | Common Stock | 8.39 footnote F1 | $0.00 | - | |
| Brian Scott Davis - Officer | Tax withholding / forfeiture | Common Stock | 963.03 footnote F2 | $441.36 | $425K | |
| Brian Scott Davis - Officer | Grant or award | Dividend Equivalent Rights | 16.81 | $0.00 | - | |
| Brian Scott Davis - Officer | Option exercise | Dividend Equivalent Rights | 8.39 | $0.00 | - | |
| ||||||
| Manuvir Das - Director | Grant or award | Dividend Equivalent Rights | 0.27 | $0.00 | - | |
| Grant or award | Dividend Equivalent Rights | 0.68 | $0.00 | - | ||
| Kimberly Alexy - Director | Grant or award | Dividend Equivalent Rights | 0.56 | $0.00 | - | |
| Option exercise | Common Stock | 7 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 700 footnote F2 | $441.57 | $309K | ||
| Open-market sale | Common Stock | 432 | $451.20 | $195K | ||
| Option exercise | Dividend Equivalent Rights | 7.06 | $0.00 | - | ||
| ||||||
| Vidyadhara K. Gubbi - Officer | Option exercise | Common Stock | 14 footnote F1 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Tax withholding / forfeiture | Common Stock | 1,764 footnote F2 | $441.57 | $779K | |
| Vidyadhara K. Gubbi - Officer | Open-market sale | Common Stock | 1,795 | $459.87 | $825K | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Dividend Equivalent Rights | 14.12 | $0.00 | - | |
| ||||||
| Brian Scott Davis - Officer | Option exercise | Common Stock | 7 footnote F1 | $0.00 | - | |
| Brian Scott Davis - Officer | Tax withholding / forfeiture | Common Stock | 882 footnote F2 | $441.57 | $389K | |
| Brian Scott Davis - Officer | Option exercise | Dividend Equivalent Rights | 7.06 | $0.00 | - | |
| ||||||
| Irving Tan - Officer | Other | Common Stock | 112,500 | $0.00 | - | |
| Irving Tan - Officer | Other | Common Stock | 112,500 | $0.00 | - | |
| Irving Tan - Officer | Gift | Common Stock | 112,500 | $0.00 | - | |
| Irving Tan - Officer | Gift | Common Stock | 112,500 | $0.00 | - | |
| Open-market sale | Common Stock | 2,000 | $447.06 | $894K | ||
| Open-market sale | Common Stock | 2,000 | $448.58 | $897K | ||
| Open-market sale | Common Stock | 1,600 | $455.00 | $728K | ||
| Option exercise | Common Stock | 7 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 771 footnote F2 | $450.75 | $348K | ||
| Grant or award | Common Stock | 3,878 | $0.00 | - | ||
| Open-market sale | Common Stock | 476 | $450.78 | $215K | ||
| Option exercise | Common Stock | 9 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 1,631 footnote F2 | $468.88 | $765K | ||
| Open-market sale | Common Stock | 1,007 | $478.36 | $482K | ||
| Option exercise | Dividend Equivalent Rights | 7.78 | $0.00 | - | ||
| Option exercise | Dividend Equivalent Rights | 9.47 | $0.00 | - | ||
| ||||||
| Irving Tan - Officer | Option exercise | Common Stock | 32 footnote F1 | $0.00 | - | |
| Irving Tan - Officer | Tax withholding / forfeiture | Common Stock | 476 footnote F3 | $450.75 | $215K | |
| Irving Tan - Officer | Grant or award | Common Stock | 16,548 | $0.00 | - | |
| Irving Tan - Officer | Option exercise | Common Stock | 42 footnote F1 | $0.00 | - | |
| Irving Tan - Officer | Tax withholding / forfeiture | Common Stock | 3,314 footnote F3 | $468.88 | $1.55M | |
| Irving Tan - Officer | Option exercise | Dividend Equivalent Rights | 32.03 | $0.00 | - | |
| Irving Tan - Officer | Option exercise | Dividend Equivalent Rights | 42.42 | $0.00 | - | |
| ||||||
| Grant or award | Common Stock | 6,722 | $0.00 | - | ||
| Option exercise | Common Stock | 15 footnote F2 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 2,741 footnote F3 | $468.88 | $1.29M | ||
| Option exercise | Dividend Equivalent Rights | 15.91 | $0.00 | - | ||
| ||||||
| Grant or award | Common Stock | 8,274 | $0.00 | - | ||
| Option exercise | Common Stock | 19 footnote F2 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 4,317 footnote F3 | $468.88 | $2.02M | ||
| Option exercise | Dividend Equivalent Rights | 19.88 | $0.00 | - | ||
| ||||||
| Vidyadhara K. Gubbi - Officer | Option exercise | Common Stock | 9 footnote F1 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Tax withholding / forfeiture | Common Stock | 1,143 footnote F2 | $450.75 | $515K | |
| Vidyadhara K. Gubbi - Officer | Grant or award | Common Stock | 5,171 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Common Stock | 9 footnote F1 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Tax withholding / forfeiture | Common Stock | 2,056 footnote F2 | $468.88 | $964K | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Dividend Equivalent Rights | 9.15 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Dividend Equivalent Rights | 9.47 | $0.00 | - | |
| ||||||
| Brad Feller - Officer | Grant or award | Common Stock | 2,068 | $0.00 | - | |
| Brian Scott Davis - Officer | Option exercise | Common Stock | 7 footnote F1 | $0.00 | - | |
| Brian Scott Davis - Officer | Tax withholding / forfeiture | Common Stock | 971 footnote F2 | $450.75 | $438K | |
| Brian Scott Davis - Officer | Grant or award | Common Stock | 3,619 | $0.00 | - | |
| Brian Scott Davis - Officer | Option exercise | Common Stock | 7 footnote F1 | $0.00 | - | |
| Brian Scott Davis - Officer | Tax withholding / forfeiture | Common Stock | 1,644 footnote F2 | $468.88 | $771K | |
| Brian Scott Davis - Officer | Option exercise | Dividend Equivalent Rights | 7.78 | $0.00 | - | |
| Brian Scott Davis - Officer | Option exercise | Dividend Equivalent Rights | 7.57 | $0.00 | - | |
| ||||||
| Option exercise | Common Stock | 3 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 379 footnote F2 | $469.05 | $178K | ||
| Open-market sale | Common Stock | 235 | $477.27 | $112K | ||
| Option exercise | Common Stock | 11 footnote F1 | $0.00 | - | ||
| Tax withholding / forfeiture | Common Stock | 1,109 footnote F2 | $459.44 | $510K | ||
| Open-market sale | Common Stock | 684 | $446.17 | $305K | ||
| Option exercise | Dividend Equivalent Rights | 3.83 | $0.00 | - | ||
| Option exercise | Dividend Equivalent Rights | 11.18 | $0.00 | - | ||
| ||||||
| Irving Tan - Officer | Option exercise | Common Stock | 13 footnote F1 | $0.00 | - | |
| Irving Tan - Officer | Tax withholding / forfeiture | Common Stock | 144 footnote F2 | $469.05 | $68K | |
| Irving Tan - Officer | Option exercise | Common Stock | 25 footnote F1 | $0.00 | - | |
| Irving Tan - Officer | Tax withholding / forfeiture | Common Stock | 545 footnote F2 | $459.44 | $250K | |
| Irving Tan - Officer | Option exercise | Dividend Equivalent Rights | 13.26 | $0.00 | - | |
| Irving Tan - Officer | Option exercise | Dividend Equivalent Rights | 25.01 | $0.00 | - | |
| ||||||
| Vidyadhara K. Gubbi - Officer | Option exercise | Common Stock | 4 footnote F1 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Tax withholding / forfeiture | Common Stock | 592 footnote F2 | $469.05 | $278K | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Common Stock | 5 footnote F1 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Tax withholding / forfeiture | Common Stock | 694 footnote F2 | $459.44 | $319K | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Dividend Equivalent Rights | 4.75 | $0.00 | - | |
| Vidyadhara K. Gubbi - Officer | Option exercise | Dividend Equivalent Rights | 5.56 | $0.00 | - | |
| ||||||
Recent WDC Form 144 notices of proposed sale
3An 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 |
|---|---|---|---|---|---|
| Lock Tregillis Cynthia | Officer | 807 | $307K | View on EDGAR | |
| Vidyadhara K. Gubbi | Officer | 1,795 |
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 |
|---|---|---|---|---|---|---|---|
| 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
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Cynthia L. Tregillis view on EDGAR
- - Irving Tan view on EDGAR
- - Stephanie A. Streeter view on EDGAR
- - Ahmed Mohammed Shihab view on EDGAR
- - Kris Sennesael view on EDGAR
- - Roxanne Oulman view on EDGAR
- - Matthew E. Massengill view on EDGAR
- - Bruce E. Kiddoo view on EDGAR
- - 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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