WDC
Western Digital Corporation
423.90$
+1.7%
vs. previous close
Closing price · As of: Sep 17, 2026
Ownership
Ownership Structure
Who owns Western Digital Corporation (WDC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.3% of the shares are freely tradable; institutional investors hold 101.2%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
101.2%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
0.5%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
99.3%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
6.2%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
361Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 9.92 | 35,769,222 | +0.7 | 03/31/2026 |
| FMR Inc | 8.77 | 31,623,418 | -6.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 6.11 | 22,034,861 | +0.0 | 03/31/2026 |
| JPMorgan Chase & Co | 4.86 | 17,512,148 | +22.5 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 4.76 | 17,172,653 | +0.0 | 03/31/2026 |
| Capital World Investors | 4.60 | 16,598,211 | +39.7 | 06/30/2026 |
| State Street Corp | 4.29 | 15,465,766 | -1.5 | 03/31/2026 |
| Amvescap Plc. | 3.51 | 12,646,421 | -3.7 | 03/31/2026 |
| Geode Capital Management, LLC | 2.63 | 9,477,201 | +2.1 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.04 | 10,975,675 | +0.3 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Tan Irving | Chief Executive Officer | 604,147 | 256,097,913 $ | Aug 26, 2026 | both |
| Sennesael Kris | Chief Financial Officer | 173,709 | 73,635,245 $ | Aug 26, 2026 | direct |
| Shihab Ahmed Mohammed | Chief Product Officer | 163,702 | 69,393,278 $ | Aug 26, 2026 | direct |
| Tregillis Cynthia L | Chief Legal Officer & Corp Sec | 111,030 | 47,065,617 $ | Sep 4, 2026 | direct |
| Davis Brian Scott | Chief Sales & Mrktng Officer | 100,446 | 42,579,059 $ | Sep 3, 2026 | direct |
| Gubbi Vidyadhara K | Chief of Global Operations | 80,571 | 34,154,047 $ | Sep 4, 2026 | direct |
| Streeter Stephanie A | Director | 34,807 | 14,754,687 $ | Sep 1, 2026 | indirect |
| Cole Martin I | Director | 21,465 | 9,099,014 $ | Jul 28, 2026 | direct |
| Feller Brad | SVP & Chief Accounting Officer | 12,043 | 5,105,028 $ | Aug 25, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 4, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 432 | 451.20 | 194,918 |
| Sep 4, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Sell | 1,795 | 459.87 | 825,472 |
| Sep 3, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 700 | 441.57 | 309,099 |
| Sep 3, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 7 | 0.00 | – |
| Sep 3, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 1,764 | 441.57 | 778,929 |
| Sep 3, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 14 | 0.00 | – |
| Sep 3, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 882 | 441.57 | 389,465 |
| Sep 3, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 7 | 0.00 | – |
| Sep 1, 2026 | Tan Irving | Chief Executive Officer | Other | 112,500 | 0.00 | – |
| Sep 1, 2026 | Streeter Stephanie A | Director | Sell | 1,600 | 455.00 | 728,000 |
| Aug 31, 2026 | Tan Irving | Chief Executive Officer | Other | 112,500 | 0.00 | – |
| Aug 31, 2026 | Streeter Stephanie A | Director | Sell | 2,000 | 448.58 | 897,160 |
| Aug 27, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 1,007 | 478.36 | 481,709 |
| Aug 26, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 1,631 | 468.88 | 764,743 |
| Aug 26, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 9 | 0.00 | – |
| Aug 26, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 476 | 450.78 | 214,571 |
| Aug 26, 2026 | Tan Irving | Chief Executive Officer | Other | 3,314 | 468.88 | 1,553,868 |
| Aug 26, 2026 | Tan Irving | Chief Executive Officer | Other | 42 | 0.00 | – |
| Aug 26, 2026 | Shihab Ahmed Mohammed | Chief Product Officer | Other | 2,741 | 468.88 | 1,285,200 |
| Aug 26, 2026 | Shihab Ahmed Mohammed | Chief Product Officer | Other | 15 | 0.00 | – |
| Aug 26, 2026 | Sennesael Kris | Chief Financial Officer | Other | 4,317 | 468.88 | 2,024,155 |
| Aug 26, 2026 | Sennesael Kris | Chief Financial Officer | Other | 19 | 0.00 | – |
| Aug 26, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 2,056 | 468.88 | 964,017 |
| Aug 26, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 9 | 0.00 | – |
| Aug 26, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 1,644 | 468.88 | 770,839 |
| Aug 26, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 7 | 0.00 | – |
| Aug 25, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 3,878 | 0.00 | – |
| Aug 25, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 771 | 450.75 | 347,528 |
| Aug 25, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 7 | 0.00 | – |
| Aug 25, 2026 | Tan Irving | Chief Executive Officer | Other | 16,548 | 0.00 | – |
| Aug 25, 2026 | Tan Irving | Chief Executive Officer | Other | 476 | 450.75 | 214,557 |
| Aug 25, 2026 | Tan Irving | Chief Executive Officer | Other | 32 | 0.00 | – |
| Aug 25, 2026 | Shihab Ahmed Mohammed | Chief Product Officer | Other | 6,722 | 0.00 | – |
| Aug 25, 2026 | Sennesael Kris | Chief Financial Officer | Other | 8,274 | 0.00 | – |
| Aug 25, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 5,171 | 0.00 | – |
| Aug 25, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 1,143 | 450.75 | 515,207 |
| Aug 25, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 9 | 0.00 | – |
| Aug 25, 2026 | Feller Brad | SVP & Chief Accounting Officer | Other | 2,068 | 0.00 | – |
| Aug 25, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 3,619 | 0.00 | – |
| Aug 25, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 971 | 450.75 | 437,678 |
| Aug 25, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 7 | 0.00 | – |
| Aug 24, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 684 | 446.17 | 305,180 |
| Aug 21, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 1,109 | 459.44 | 509,519 |
| Aug 21, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Other | 11 | 0.00 | – |
| Aug 21, 2026 | Tregillis Cynthia L | Chief Legal Officer & Corp Sec | Sell | 235 | 477.27 | 112,158 |
| Aug 21, 2026 | Tan Irving | Chief Executive Officer | Other | 545 | 459.44 | 250,395 |
| Aug 21, 2026 | Tan Irving | Chief Executive Officer | Other | 25 | 0.00 | – |
| Aug 21, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 694 | 459.44 | 318,851 |
| Aug 21, 2026 | Gubbi Vidyadhara K | Chief of Global Operations | Other | 5 | 0.00 | – |
| Aug 21, 2026 | Davis Brian Scott | Chief Sales & Mrktng Officer | Other | 593 | 459.44 | 272,448 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.