Western Digital WDC
Western Digital is the 94th largest S&P 500 company by market cap, worth $129 billion. 9 directors have filed with the SEC in the last 12 months (who counts), 1 of them an executive. 6 other officers are on file. At 30 Jun 2026, Vanguard was its largest institutional holder, with 11.4% of the company.
- CEO
- Irving Tan
- Sector
- Information Technology
- Sub-industry
- Technology Hardware, Storage & Peripherals
- Headquarters
- San Jose, California
- Founded
- 1970
- More
- Wikipedia
- Market cap
- $129B
- 94th largest, 23 Oct 2026 close
- Price to sales
- 10.0
- Market cap over revenue
- Market cap per employee
- $3.2M
- Market cap over employees
- Connections
- 1
- S&P 500 companies sharing a director or officer
Largest institutional holders
Each fund group's share of Western Digital. Where a company has several share classes, the share is of its total value.
13F filings for the quarter to 30 Jun 2026
Board and officers
1 person here also holds roles at other S&P 500 companies.
Roles filed up to 30 Sep 2026
| Name | Title |
|---|---|
| Directors (9) | |
| Irving TanChief Executive Officer | |
| Kimberly AlexyDirector | |
| Martin I. ColeDirector | |
| Manuvir DasDirector | |
| Tunc DolucaDirector | |
| Bruce E. KiddooDirectorAlso at ON Semiconductor | |
| Matthew E. MassengillDirector | |
| Roxanne OulmanDirector | |
| Stephanie A. StreeterDirector | |
| Officers (6) | |
| Kris SennesaelChief Financial OfficerLast filed 21 Sep 2026 | |
| Brian Scott DavisChief Sales & Mrktng OfficerLast filed 21 Sep 2026 | |
| Brad FellerSVP, Global Accounting & ChiefLast filed 21 Sep 2026 | |
| Vidyadhara K. GubbiChief of Global OperationsLast filed 21 Sep 2026 | |
| Ahmed Mohammed ShihabChief Product OfficerLast filed 21 Sep 2026 | |
| Cynthia L. TregillisChief Legal Officer & Corp SecLast filed 21 Sep 2026 | |
Companies that share people with Western Digital
Each person's title here, then at the other company.
- ON Semiconductor ON
- Bruce E. Kiddoo: Director here, Director there
Western Digital's market cap since December 2008
Marked weeks are changes in the share count, such as a merger, not market moves.
Weekly, up to 23 Oct 2026
| Week ending | Market cap |
|---|---|
| 23 Oct 2026 | $129B |
| 26 Dec 2025 | $62.1B |
| 27 Dec 2024 | $21.0B |
| 29 Dec 2023 | $17.0B |
| 30 Dec 2022 | $10.0B |
| 31 Dec 2021 | $20.3B |
| 25 Dec 2020 | $15.2B |
| 27 Dec 2019 | $18.5B |
| 28 Dec 2018 | $10.6B |
| 29 Dec 2017 | $23.5B |
| 30 Dec 2016 | $19.4B |
| 25 Dec 2015 | $14.2B |
| 26 Dec 2014 | $26.3B |
| 27 Dec 2013 | $19.6B |
| 28 Dec 2012 | $10.1B |
| 30 Dec 2011 | $7.2B |
| 31 Dec 2010 | $7.8B |
| 25 Dec 2009 | $10.1B |
| 26 Dec 2008 | $2.5B |
Download Western Digital's data as JSON, with the weekly market caps in billions of dollars from 5 Dec 2008.
Workforce
Headcount at 3 Jul 2026
- Employees
- 40,000
At the end of 2026, we employed approximately 40,000 people worldwide.
Insider trades
Open-market buys and sales by directors and officers. Grants, option exercises and shares withheld for tax are left out.
Trades from 30 Sep 2025 to 30 Sep 2026
Directors and officers sold $74.9 million of stock in 43 sales and made no open-market purchases in the 12 months to 30 Sep 2026.
| Date | Person | Value |
|---|---|---|
| 4 Sep 2026Sale | Vidyadhara K. GubbiChief of Global Operations | $825K |
| 4 Sep 2026Sale | Cynthia L. TregillisChief Legal Officer & Corp Sec | $195K |
| 1 Sep 2026Sale | Stephanie A. StreeterDirector | $728K |
| 31 Aug 2026Sale | Stephanie A. StreeterDirector | $1.8M |
| 27 Aug 2026Sale | Cynthia L. TregillisChief Legal Officer & Corp Sec | $482K |
| 26 Aug 2026Sale | Cynthia L. TregillisChief Legal Officer & Corp Sec | $215K |
| 24 Aug 2026Sale | Cynthia L. TregillisChief Legal Officer & Corp Sec | $305K |
| 21 Aug 2026Sale | Cynthia L. TregillisChief Legal Officer & Corp Sec | $112K |
| 11 Aug 2026Sale | Irving TanChief Executive Officer | $8.9M |
| 28 Jul 2026Sale | Martin I. ColeDirector | $1.8M |
Showing 10 of 43 trades
Trades by members of Congress and officials
Trades members of Congress and senior executive branch officials disclosed, including their families'. Amounts are filed as ranges.
Trades from 20 Oct 2023 to 20 Oct 2026
6 people disclosed 11 purchases and 6 sales of Western Digital stock since October 2023.
| Date | Member or official | Amount |
|---|---|---|
| 25 Sep 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 18 Sep 2026 | Gilbert CisnerosHouse, D-CA 路 Sold | $1K to $15K |
| 17 Jul 2026 | Gilbert CisnerosHouse, D-CA 路 Bought | $1K to $15K |
| 15 Apr 2026 | Donald J TrumpPresident 路 Bought | $1K to $15K |
| 13 Apr 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 27 Mar 2026 | Alan ArmstrongSenate, R-OK 路 Bought | $1K to $15K |
| 29 Jan 2026 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 12 May 2025 | Jefferson ShreveHouse, R-IN 路 Sold | $15K to $50K |
| 23 Apr 2025 | Rohit KhannaHouse, D-CA 路 Bought | $1K to $15K |
| 17 Apr 2025 | Jefferson ShreveHouse, R-IN 路 Bought | $15K to $50K |
Showing 10 of 17 trades
WARN layoff notices
Notices filed under Western Digital's own name. Subsidiaries that file under their own names are not included.
Notices from 26 Oct 2023 to 26 Oct 2026
Western Digital filed 2 notices covering 117 workers since October 2023.
| Notice | Place | Workers |
|---|---|---|
| 15 Nov 2023 | CA | 60 |
| 15 Nov 2023 | CA | 57 |