Welcome to our dedicated page for WESTERN DIGITAL SEC filings (Ticker: WDC), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Western Digital filings document material events for an operating storage company whose common stock trades on the Nasdaq Global Select Market under WDC. Recent 8-K disclosures record quarterly operating and financial results, dividend and capital-structure matters, shareholder voting and governance items, and material agreements.
The filing record also describes security-structure changes, including the mandatory conversion of Series A Convertible Perpetual Preferred Stock into common stock, the Certificate of Elimination for that preferred series, and redemptions or discharge of senior-note obligations. These documents frame WD's public-company reporting around results, debt and equity instruments, governance, and corporate actions following the completed Flash business separation.
Vanguard Portfolio Management LLC filed an amended Schedule 13G reporting beneficial ownership of 13,196,274 shares of Western Digital Corp common stock. This represents 3.6% of the company’s outstanding common shares as of June 30, 2026.
Vanguard reports sole voting power over 86,800 shares and sole dispositive power over 13,196,274 shares, with no shared voting or dispositive power. The position reflects holdings managed by Vanguard Portfolio Management and specified affiliates for Vanguard funds and other clients, and no other individual person has an interest in more than 5% of the class through these holdings.
Western Digital Corp director Cole Martin I reported selling 192 shares of common stock on July 28, 2026, in two transactions at weighted average prices of $462.3013 for 160 shares and $465.1231 for 32 shares. The sales were effected under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2026, and this report is a continuation of another Form 4 filed for the same date.
Cole Martin I, a director of Western Digital, sold 3,808 shares of common stock on July 28, 2026 in 30 open-market or private transactions. The trades occurred at weighted-average prices within ranges from $423.42 to $461.89 per share under a Rule 10b5-1 trading plan adopted March 5, 2026.
Cynthia L. Tregillis, Chief Legal Officer & Corporate Secretary of Western Digital, reported several equity transactions. On July 20, dividend equivalent rights tied to restricted stock units converted into 13 common shares, with 1,309 shares withheld to cover taxes. On July 21, she sold 808 common shares at $529.63 per share under a Rule 10b5-1 trading plan adopted on March 6, 2026.
Western Digital insider Cynthia Lock Tregillis filed a notice of intent to sell 808 shares of common stock through Morgan Stanley Smith Barney LLC’s Executive Financial Services, with a proposed sale date of July 21, 2026 on NASDAQ. The shares are reported as Restricted Stock issued by the company. The filing also lists prior sales of Western Digital common stock over the past three months, including transactions on May 21, May 22, May 27, and June 5, 2026, each with specified share counts and dollar values.
Tregillis Cynthia L reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp Chief Legal Officer and Corporate Secretary Cynthia L. Tregillis reported a routine compensation-related transaction. She received 18.6375 Dividend Equivalent Rights tied to previously awarded restricted stock units. Each right represents a contingent right to receive one share of common stock or its cash value as the related RSUs vest.
Following this grant, Tregillis holds a total of 323.0011 Dividend Equivalent Rights, all reported as directly owned. These awards do not reflect an open-market purchase or sale, but rather standard equity compensation that vests proportionately with the underlying RSUs.
Western Digital Corp Chief Executive Officer Irving Tan reported routine equity compensation activity rather than open-market trading. On June 20, 2026, 1,090 shares of common stock were withheld to cover tax obligations tied to vesting awards, leaving him with 595,966 directly held shares. The filing also shows dividend equivalent rights converting into 52.1114 shares of common stock and a separate grant of 56.5009 new dividend equivalent rights, which track previously awarded restricted stock units and pay out one share of common stock, or its cash value, per right as those units vest.
Western Digital Corp director Stephanie A. Streeter received a small grant of dividend equivalent rights tied to existing restricted stock units. On June 17, 2026, she acquired 0.3342 dividend equivalent rights, bringing her total derivative holdings of this award type to 2.1166 rights.
Western Digital Corp Chief Product Officer Ahmed Mohammed reported routine equity compensation transactions. On June 17, 2026, 5,149 shares of common stock were disposed of to cover tax obligations related to vesting, a non-market, tax-withholding event. The same day, he acquired 51 shares of common stock through an exercise of derivative awards and received 27.9177 dividend equivalent rights that convert one-for-one into common shares. Following these transactions, he directly holds 159,706 shares of common stock, plus ongoing dividend equivalent rights linked to previously granted restricted stock units.
Sennesael Kris reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp Chief Financial Officer Kris Sennesael received a grant of 27.7681 Dividend Equivalent Rights tied to existing restricted stock units. Following this compensation-related award, he holds 464.2043 Dividend Equivalent Rights, each representing a contingent right to receive one share of common stock or its cash value upon vesting.