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. Chief Legal Officer & Corp Sec Cynthia L. Tregillis sold 807 shares of common stock on October 21, 2026, at $380.00 per share under a Rule 10b5-1 trading plan adopted on March 6, 2026. On October 20, dividend equivalent rights converted into 14 shares of common stock on a one-for-one basis in connection with restricted stock unit vesting, and 1,310 shares were withheld for the related tax obligation.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Tregillis Cynthia L reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that Chief Legal Officer & Corp Sec Cynthia L. Tregillis received an award of 27.38 Dividend Equivalent Rights on September 17, 2026, linked to previously granted restricted stock units. Following this grant, she holds 297.8619 Dividend Equivalent Rights directly.
Each Dividend Equivalent Right represents a contingent right to receive one share of Western Digital common stock or its cash value, and will vest proportionately with the underlying restricted stock units. No Rule 10b5-1 trading plan is reported for this Form 4.
WESTERN DIGITAL CORP (WDC) reports that Chief Executive Officer and director Irving Tan had several equity-related transactions. On September 20, 2026, dividend equivalent rights corresponding to 56.7622 units were converted on a one-for-one basis into 56.7620 shares of common stock in connection with vesting of related restricted stock units, and a cash amount was paid to settle a fractional right.
Also on September 20, 2026, 1,091.0350 shares of common stock were withheld at $441.36 per share to pay tax obligations incident to vesting, in accordance with Rule 16b-3(e). On September 17, 2026, Tan received a grant of 83.2995 dividend equivalent rights that accrue on previously awarded restricted stock units. Indirectly, there are 112,500 shares of common stock held by a trust via an investment company and 209,000 shares held by a personal investment company. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (WDC) director Stephanie A. Streeter reported an automatic compensation-related acquisition of 0.5617 Dividend Equivalent Rights on September 17, 2026, linked to previously awarded restricted stock units. Following this grant, she holds 2.6783 such rights directly, each representing a contingent right to receive one share of common stock or its cash value. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (WDC) reported Form 4 transactions by Chief Product Officer Ahmed Mohammed on September 17, 2026 involving dividend equivalent rights and common stock tied to previously awarded restricted stock units (RSUs).
He received a grant of 42.1952 dividend equivalent rights that each represent a contingent right to one share of common stock or its cash value. On the same date, 56.5237 dividend equivalent rights were converted into and paid in the form of 56 shares of common stock, with a small cash payment for the fractional right. In connection with vesting, 5,150 shares of common stock were withheld at $423.87 per share to pay a tax obligation. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Sennesael Kris reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that its Chief Financial Officer, Kris Sennesael, received an automatic grant of 46.5075 Dividend Equivalent Rights on September 17, 2026, tied to previously awarded restricted stock units. After this grant, he holds 490.8297 Dividend Equivalent Rights directly.
Each Dividend Equivalent Right represents a contingent right to receive one share of common stock or its cash value, and these rights vest proportionately with the underlying restricted stock units to which they relate.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Oulman Roxanne reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that director Roxanne Oulman received a grant of 0.5617 Dividend Equivalent Rights on September 17, 2026, linked to previously awarded restricted stock units. Each right represents a contingent right to receive one share of common stock or its cash value, bringing her directly held Dividend Equivalent Rights to 2.6783.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. MASSENGILL MATTHEW E reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that director Matthew E. Massengill received an automatic grant of 10.2654 Dividend Equivalent Rights on September 17, 2026. These rights accrued on previously awarded restricted stock units and will vest proportionately with those RSUs. Following this award, he holds 121.1113 Dividend Equivalent Rights directly. Each right represents a contingent right to receive one share of Western Digital common stock or its cash value, and no Rule 10b5-1 trading plan is reported for this transaction.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. KIDDOO BRUCE E reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that director Bruce E. Kiddoo received a grant of dividend equivalent rights on September 17, 2026, tied to previously awarded restricted stock units. The award covers 0.5617 dividend equivalent rights, bringing his directly held dividend equivalent rights to 2.6783, each linked to an equivalent amount of common stock or its cash value as they vest with the underlying RSUs.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Gubbi Vidyadhara K reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that Chief of Global Operations Gubbi Vidyadhara K received a grant of 21.0234 Dividend Equivalent Rights on September 17, 2026. These rights accrued on previously awarded restricted stock units and increase his directly held Dividend Equivalent Rights to 215.1478, each representing a contingent right to one share of common stock or its cash value, vesting proportionately with the related RSUs.
WESTERN DIGITAL CORP (WDC) reported that officer Brad Feller, SVP, Global Accounting & Chief, acquired 4.2424 Dividend Equivalent Rights on September 17, 2026. These rights accrued on previously awarded restricted stock units and represent contingent rights to receive an equivalent number of common shares or their cash value, vesting proportionately with the related RSUs. Following this grant, Feller holds a total of 17.4719 Dividend Equivalent Rights, all reported as held directly.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. DOLUCA TUNC reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that director Tunc Doluca received a grant of 0.5617 Dividend Equivalent Rights on September 17, 2026. These rights accrued on previously awarded restricted stock units and vest proportionately with those units. Each right represents a contingent right to receive one share of common stock or the cash value thereof, bringing Doluca's directly held Dividend Equivalent Rights to 2.6783.
WESTERN DIGITAL CORP (WDC) reported that Chief Sales & Mrktng Officer Brian Scott Davis had dividend equivalent rights convert into 8.3860 shares of common stock on September 20, 2026, in connection with vesting restricted stock units. In a related step, 963.034 shares of common stock were withheld that day to pay tax obligations on the vesting. On September 17, 2026, he also received a grant of 16.8107 dividend equivalent rights that accrue on previously awarded restricted stock units. No Rule 10b5-1 trading plan is reported.
WESTERN DIGITAL CORP (WDC) director Manuvir Das reported an award of 0.2732 Dividend Equivalent Rights on September 17, 2026, linked to previously granted restricted stock units. Following this acquisition, he holds 0.4358 Dividend Equivalent Rights directly, each tied to the issuer’s common stock or its cash value as the related RSUs vest.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Cole Martin I reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) director Martin I. Cole reported an award of 0.6786 Dividend Equivalent Rights on September 17, 2026, tied to previously granted restricted stock units. After this grant, he holds 3.2359 Dividend Equivalent Rights directly. No Rule 10b5-1 trading plan is reported.
Each Dividend Equivalent Right represents a contingent right to receive one share of Western Digital common stock or the cash value, and vests proportionately with the underlying RSUs.
WESTERN DIGITAL CORP (symbol: WDC) is the issuer of record for a Form 4 filing submitted to the SEC. Alexy Kimberly reported acquisition or exercise transactions in this Form 4 filing.
WESTERN DIGITAL CORP (WDC) reported that director Kimberly Alexy received a grant of 0.5617 Dividend Equivalent Rights on September 17, 2026, tied to previously awarded restricted stock units. Following this grant, she holds 2.6783 Dividend Equivalent Rights, each linked to the issuer’s common stock or its cash value.
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.