Every Form 4 that Western Digital Corp. (WDC) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow WDC and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full WDC filings page.
WESTERN DIGITAL CORP (WDC) reported insider transactions by Chief Legal Officer & Corp Sec Cynthia L. Tregillis involving common stock and dividend equivalent rights. On September 4, 2026, she sold 432 shares of common stock at $451.20 per share, reported as a sale in the open market or a private transaction.
On September 3, 2026, dividend equivalent rights were converted on a one-for-one basis into 7 shares of common stock, with a cash payment settling a fractional right, and 700 shares of common stock were delivered or withheld to pay a tax obligation in connection with vesting, at a reference value of $441.57 per share. After the conversion, 270.4819 dividend equivalent rights remained outstanding. The sale of 432 shares was effected pursuant to a Rule 10b5-1 trading plan adopted on March 6, 2026.
WESTERN DIGITAL CORP (WDC) officer Vidyadhara K Gubbi, Chief of Global Operations, reported several equity transactions. On September 4, 2026, he sold 1,795 shares of common stock at $459.8732 per share. On September 3, 2026, dividend equivalent rights converted into 14.1166 shares of common stock, and 1,764 shares of common stock were withheld to pay tax obligations incident to vesting, all held directly. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (WDC) reported that Chief Sales & Marketing Officer Brian Scott Davis exercised dividend equivalent rights and handled related tax withholding on September 3, 2026. Dividend equivalent rights tied to vested restricted stock units converted one-for-one into common stock, resulting in an acquisition of 7 shares of common stock and a small cash payment for a fractional right. Separately, 882 shares of common stock were withheld to pay tax obligations in connection with the vesting, in accordance with Rule 16b-3(e). No Rule 10b5-1 trading plan is indicated.
WESTERN DIGITAL CORP (WDC) director and Chief Executive Officer Irving Tan reported internal transfers involving 112,500 shares of common stock tied to personal estate and investment structuring. On August 31, 2026, 112,500 directly held shares were transferred to a Bahamas investment company owned by Tan and his spouse, with the investment company recording an interest-free, on-demand shareholder loan to them in an amount equal to the value of the transferred shares and no cash consideration paid. On September 1, 2026, the rights of Tan and his spouse in that investment company and in the related loan were transferred to a revocable trust acting via its trustee, so that trust assets are held through the investment company for estate planning purposes. A separate indirect holding of 209,000 shares is reported as held through a personal investment company. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (WDC) director Stephanie A. Streeter reported indirect sales of a total of 5,600 shares of common stock held by a family trust in late August and early September 2026. The reported transactions were sales in the open market or private transactions, and no Rule 10b5-1 trading plan is reported. Streeter also reports 1,585 shares held directly as of August 31, 2026.
WESTERN DIGITAL CORP (WDC) reported insider equity activity by Chief Legal Officer & Corporate Secretary Cynthia L. Tregillis. She sold 1,483 shares of common stock in open-market transactions on August 26–27, 2026 at prices of $450.78 and $478.36 per share, effected under a Rule 10b5-1 trading plan adopted March 6, 2026. In connection with vesting equity awards, 2,402 shares were withheld to satisfy tax obligations under Rule 16b-3(e), and 3,878 restricted stock units were granted, each representing a right to one share. Dividend Equivalent Rights tied to vested RSUs were also converted into an equivalent number of common shares, with a cash payment made only for a fractional right.
WESTERN DIGITAL CORP (WDC) director and Chief Executive Officer Irving Tan reported several equity compensation-related transactions. On August 25–26, 2026, dividend equivalent rights were converted into about 74.447 shares of common stock in connection with vesting of restricted stock units, and 16,548 restricted stock units were granted. To cover tax obligations upon vesting, 3,790 shares of common stock were withheld at prices of $450.75 and $468.88 per share. A footnote also states that 209,000 shares were transferred to Tan’s personal investment company as a change in form of beneficial ownership exempt under Rule 16a-13.
WESTERN DIGITAL CORP (WDC) reported insider equity compensation activity by Chief Product Officer Shihab Ahmed Mohammed. On August 25, 2026, he received 6,722 restricted stock units, each representing one common share. On August 26, related dividend equivalent rights converted into 15 common shares, and 2,741 shares of common stock were withheld to satisfy tax obligations upon vesting.
WESTERN DIGITAL CORP (WDC) reported insider equity compensation and related tax withholding transactions by Chief Financial Officer Kris Sennesael. On August 25, 2026, he received 8,274 restricted stock units, each representing one share of common stock. On August 26, dividend equivalent rights totaling 19.8821 units converted into 19 shares of common stock (with a fractional unit settled in cash), and 4,317 shares of common stock were withheld to pay tax obligations upon vesting. After the conversion, he held 444.3222 dividend equivalent rights as a derivative position.
WESTERN DIGITAL CORP (WDC) reported insider equity transactions by Chief of Global Operations Gubbi Vidyadhara K. On August 25 and 26, 2026, dividend equivalent rights were exercised and converted on a one-for-one basis into small amounts of common stock in connection with vesting restricted stock units, with a fractional right settled in cash.
The reporting person also received a grant of 5,171 restricted stock units, each representing a contingent right to one share of common stock. To satisfy related tax obligations upon vesting, the issuer withheld 1,143 shares at $450.75 per share and 2,056 shares at $468.88 per share under Rule 16b-3(e). Overall, the filing reflects compensation-related equity vesting, a new RSU grant, and tax-withholding share dispositions.
WESTERN DIGITAL CORP (WDC) reported that SVP & Chief Accounting Officer Brad Feller received a grant of 2,068 restricted stock units of common stock on August 25, 2026, at no cash cost. Each unit represents a contingent right to one share. Following this award, Feller directly holds 12,043 shares of Western Digital common stock, including 68 shares acquired under the company’s Employee Stock Purchase Plan on May 31, 2026.
WESTERN DIGITAL CORP (WDC) reported insider equity activity by Chief Sales & Marketing Officer Brian Scott Davis. On August 25–26, 2026, dividend equivalent rights were exercised and converted into common stock, and Davis received common shares from this conversion plus a 3,619-share restricted stock unit grant. In connection with vesting, a total of 2,615 shares of common stock were withheld to pay tax obligations under Rule 16b-3(e). No open-market purchases or sales were reported.
WESTERN DIGITAL CORP (WDC) insider Cynthia L. Tregillis, Chief Legal Officer & Corp Sec, reported multiple equity transactions. On August 21 and 24, 2026 she sold 235 and 684 shares of common stock at $477.27 and $446.17 per share, respectively, with both sales effected pursuant to a Rule 10b5-1 trading plan adopted on March 6, 2026. Around August 20–21, dividend equivalent rights related to restricted stock units were converted into common shares on a one-for-one basis, and a total of 1,488 shares was withheld at prices of $469.05 and $459.44 per share to satisfy tax obligations under Rule 16b-3(e).
WESTERN DIGITAL CORP (WDC) reported that Chief Executive Officer and director Irving Tan had dividend equivalent rights convert into common stock and related tax withholdings. On August 20 and 21, 2026, dividend equivalent rights were converted one-for-one into small amounts of common stock in connection with the vesting of restricted stock units, with any fractional right settled in cash. On those same dates, shares of common stock were withheld to satisfy tax obligations upon vesting in accordance with Rule 16b-3(e). These are compensation-related conversions and tax-withholding events rather than open-market purchases or sales.
WESTERN DIGITAL CORP (WDC) reported Form 4 transactions by executive Vidyadhara K. Gubbi, Chief of Global Operations, related to equity award vesting on August 20–21, 2026. Dividend Equivalent Rights were exercised and converted one-for-one into a total of 10.3029 shares of Common Stock, resulting in acquisitions of 4 and 5 shares of Common Stock in two transactions at a stated price of $0.00 per share. In connection with the vesting of the related restricted stock units, 592 and 694 shares of Common Stock (total 1,286 shares) were withheld and disposed of under code F at $469.05 and $459.44 per share, respectively, as payment of tax obligations pursuant to Rule 16b-3(e). The filing shows no open-market purchases or sales, only award conversion and tax-withholding activity.
WESTERN DIGITAL CORP (WDC) reported insider equity compensation activity by Chief Sales & Marketing Officer Brian Scott Davis. On August 20 and 21, 2026, dividend equivalent rights tied to vested restricted stock units were converted into common stock on a one-for-one basis, resulting in the delivery of a total of 9 shares of common stock to the executive, with fractional rights settled in cash. On both dates, a total of 1,309 common shares were withheld and disposed of to satisfy tax obligations, as permitted under Rule 16b-3(e). The filing indicates these are compensation- and tax-related transactions rather than open-market purchases or sales.
Western Digital Corp (WDC) Chief Executive Officer and director Irving Tan reported open-market sales of 20,000 shares of common stock on 2026-08-11, executed in seven separate transactions. The sales, at weighted average prices ranging from lows of $440.77 to highs of $447.88 per share, were carried out under a Rule 10b5-1 trading plan adopted on February 5, 2026.
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.
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.
Western Digital Corp director Roxanne Oulman reported a small compensation-related award. She acquired 0.3342 dividend equivalent rights tied to previously granted restricted stock units. These rights vest in step with the underlying RSUs and each represents a contingent right to receive one share of common stock or its cash value. Following this award, she holds a total of 2.1166 dividend equivalent rights.
MASSENGILL MATTHEW E reported acquisition or exercise transactions in this Form 4 filing.
Western Digital director Matthew E. Massengill received a grant of 6.1088 Dividend Equivalent Rights tied to previously awarded restricted stock units. Each right represents a contingent right to receive one share of Western Digital common stock or the cash value of a share. Following this grant, Massengill holds 110.8459 Dividend Equivalent Rights in total, reflecting routine equity-based compensation rather than an open-market stock purchase or sale.
Western Digital director Bruce E. Kiddoo reported a routine compensation-related award of dividend equivalent rights linked to existing restricted stock units. On June 17, 2026, he acquired 0.3342 dividend equivalent rights, each tied to one share of common stock or its cash value, bringing his total dividend equivalent rights to 2.1166.
Gubbi Vidyadhara K reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp Chief of Global Operations Gubbi Vidyadhara K received a small compensation-related award of dividend equivalent rights tied to existing restricted stock units. The award covers 14.0786 dividend equivalent rights, bringing his total to 237.1611, each linked to one share of common stock or its cash value.
Feller Brad reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp SVP & Chief Accounting Officer Brad Feller received a grant of 2.0887 Dividend Equivalent Rights tied to previously awarded restricted stock units. Each right represents a contingent right to receive one share of Western Digital common stock or its cash value. Following this grant, he holds a total of 13.2295 Dividend Equivalent Rights directly.
DOLUCA TUNC reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp director Tunc Doluca reported a compensation-related award of 0.3342 Dividend Equivalent Rights tied to previously granted restricted stock units. After this grant, he holds 2.1166 Dividend Equivalent Rights. Each right represents a contingent right to receive one share of Western Digital common stock or its cash value, vesting proportionately with the underlying RSUs.
Western Digital Chief Sales & Marketing Officer Brian Scott Davis reported routine equity compensation activity. On 2026-06-20, 961 shares of common stock were disposed of to cover tax obligations at $746.23 per share, while 7 shares were acquired through a derivative exercise. He also received and exercised dividend equivalent rights tied to restricted stock units, and now directly holds 101,603 common shares.
Das Manuvir reported acquisition or exercise transactions in this Form 4 filing.
Western Digital Corp director Manuvir Das reported a small equity-based compensation grant. He received 0.1626 dividend equivalent rights tied to previously awarded restricted stock units. Each right corresponds to 0.1626 underlying shares of Western Digital common stock or their cash value, vesting proportionately with the related RSUs.
Cole Martin I reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP director Cole Martin I reported a small compensation-related award tied to existing equity grants. On June 17, 2026, he received 0.4038 Dividend Equivalent Rights, each linked to previously awarded restricted stock units and representing a contingent right to receive one share of common stock or its cash value. Following this award, his holdings of these derivative rights total 2.5573 units, which will vest proportionately with the underlying RSUs.
Alexy Kimberly reported acquisition or exercise transactions in this Form 4 filing.
Western Digital director Kimberly Alexy received a grant of 0.3342 Dividend Equivalent Rights linked to previously awarded restricted stock units. These rights vest in step with the related RSUs and represent a contingent right to receive one share of common stock or its cash value per right. Following this award, Alexy holds 2.1166 Dividend Equivalent Rights in total, reflecting routine, compensation-related accruals rather than any open-market buying or selling of Western Digital stock.
WESTERN DIGITAL CORP director Cole Martin I reported open-market sales of company common stock. On June 9, 2026, he sold a total of 720 shares in 14 separate transactions at prices generally in the low-to-mid $530s per share. Footnotes state these sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2026, indicating the trades were scheduled in advance rather than timed discretionarily.
Western Digital director Cole Martin I reported open-market sales of 3,280 shares of common stock on June 9, 2026. All 30 transactions were sales executed under a pre-arranged Rule 10b5-1 trading plan adopted on March 5, 2026.
The trades were completed at various prices, with footnotes indicating sale prices ranging from a low of $483.99 to a high of $527.60 per share. Following the individual trades, the filing shows Martin’s reported holdings in Western Digital stock remaining in the tens of thousands of shares, so he continues to retain a sizable stake.
Western Digital Chief Legal Officer Cynthia L. Tregillis reported a small net sale of company stock. She sold 432 shares of common stock in an open-market transaction at $545.60 per share on June 5, 2026, executed under a pre-arranged Rule 10b5-1 trading plan. After this trade, she directly owned 116,643 shares.
On June 3, 2026, she exercised dividend equivalent rights that converted into 6.6834 shares of common stock and 6 additional shares from a related derivative exercise, while 699 shares were withheld to cover tax obligations tied to vesting. Footnotes note that her holdings include 611 shares acquired through the Employee Stock Purchase Plan.
Western Digital Chief of Global Operations Vidyadhara K. Gubbi reported routine equity compensation-related transactions. On 2026-06-03, 13.3669 dividend equivalent rights were converted into the same number of common shares in connection with restricted stock unit vesting, while 1,764 shares were withheld to cover tax obligations. After these transactions, Gubbi directly held 83,403 shares of common stock and 223.0825 dividend equivalent rights.
Western Digital’s Chief Sales & Marketing Officer Brian Scott Davis reported routine equity compensation activity. On June 3, 2026, 881 shares of common stock were withheld to cover tax obligations tied to vesting securities. These tax-withholding dispositions are not open-market sales.
Davis also exercised dividend equivalent rights that converted into 6.6834 shares of common stock on a one-for-one basis in connection with restricted stock unit vesting. Following these transactions, he directly holds 102,557 shares of Western Digital common stock. Footnotes note that this total includes 132 shares acquired under the employee stock purchase plan.
Western Digital Corp Chief of Global Operations Gubbi Vidyadhara K reported an open-market sale of company stock. On June 1, 2026, the executive sold 2,475 shares of Common Stock at $556.24 per share. After this transaction, the executive directly holds 85,154 shares of Western Digital common stock.
Western Digital Corp director Bruce E Kiddoo reported an open-market sale of company common stock. On May 28, 2026, he sold 750 shares at an average price of $528.52 per share.
After this transaction, Kiddoo directly holds 3,903 Western Digital shares, with no derivative positions listed in this filing.
WESTERN DIGITAL CORP director Manuvir Das reported receiving an equity grant of 772 shares of common stock in the form of restricted stock units. The units were granted at no cash cost and, once vested, each unit will convert into one share, giving him ownership of 772 shares.
Western Digital’s Chief Legal Officer and Corporate Secretary, Cynthia L. Tregillis, reported recent equity transactions in the company’s common stock. She sold a total of 522 shares in open-market transactions at prices of $488.61 and $539.63 per share, under a pre-arranged Rule 10b5-1 trading plan adopted on May 23, 2025. She also had 771 shares withheld to cover tax obligations related to vesting equity awards. In connection with vesting, she exercised dividend equivalent rights into 7.3619 derivative rights and 7 common shares. After these transactions, she directly holds 117,157 shares of Western Digital common stock.
Western Digital Corp Chief Executive Officer Irving Tan reported routine equity compensation activity involving company stock. On May 25, 2026, 479 shares of common stock were disposed of at $484.28 per share to pay tax obligations tied to vesting securities, a non-market transaction under Rule 16b-3(e). The filing also shows the conversion of 30.3301 Dividend Equivalent Rights into the same number of common shares in connection with vesting restricted stock units, plus a small cash payment for a fractional right. Following these transactions, Tan directly held 597,004 shares of common stock, indicating the events primarily reflect compensation vesting and tax withholding rather than open-market trading.
Western Digital’s Chief of Global Operations, Vidyadhara K. Gubbi, reported routine equity compensation-related transactions. On common stock, 1,143 shares were disposed of to cover tax obligations, while 8 shares were acquired through exercising derivative-based rights. Separately, 8.6663 dividend equivalent rights were converted into the same number of common shares, with a small cash payment for a fractional right. Following these events, Gubbi continues to hold a substantial direct common stock position, and no open-market purchases or sales were reported.
Western Digital Corp Chief Sales & Marketing Officer Brian Scott Davis reported routine equity compensation activity involving common stock and related rights. On May 25, 2026, 971 shares of common stock were disposed of at $484.28 per share to satisfy tax obligations upon vesting, leaving 103,300 common shares directly owned after that withholding event.
On the same date, Davis also exercised dividend equivalent rights that converted into 7.3619 shares of common stock on a one-for-one basis tied to vested restricted stock units, with remaining dividend equivalent rights of 192.8438. After the common stock acquisition from these conversions, direct ownership increased to 104,271 common shares. No open-market purchases or sales were reported; the activity reflects vesting, derivative conversion, and tax withholding.
WESTERN DIGITAL CORP Chief Legal Officer Cynthia L. Tregillis reported a small mix of stock transactions. She sold 106 shares of common stock in an open-market sale at $458.87 per share, executed under a pre-arranged Rule 10b5-1 trading plan.
On the same dates, shares were also withheld to cover tax obligations tied to vesting, totaling 1,487 shares treated as F-code tax-withholding dispositions, not open-market sales. She additionally acquired a small number of shares through exercises of dividend equivalent rights. After these transactions, she directly holds 118,443 shares of Western Digital common stock, indicating the sale represents a very small portion of her overall position.
Western Digital CEO Irving Tan reported routine equity award activity involving a small number of shares. On May 20 and 21, 2026, Tan exercised dividend equivalent rights tied to vested restricted stock units, receiving modest amounts of common stock. In connection with these vestings, the company withheld a total of 732 shares of common stock to cover tax obligations, as permitted under Rule 16b-3(e). After these transactions, Tan directly holds roughly 598,000 shares of Western Digital common stock, indicating these moves were minor relative to his overall position.
WESTERN DIGITAL CORP Chief Financial Officer Kris Sennesael reported equity compensation-related transactions involving company stock. On May 20, 2026, he exercised awards linked to Dividend Equivalent Rights, converting 141.6534 rights into an equal number of common shares. In connection with vesting, the company withheld 18,374 common shares at $459.62 per share to satisfy tax obligations under Rule 16b-3(e). After these transactions, Sennesael directly held 169,733 shares of Western Digital common stock, indicating a routine adjustment from compensation vesting rather than an open-market trade.