Western Digital (WDC) Form 4 Filings

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.

Western Digital Corp executive Gubbi Vidyadhara K, Chief of Global Operations, reported routine equity compensation activity involving stock vesting and tax withholding. On May 20 and 21, 2026, dividend equivalent rights tied to restricted stock units converted into a total of about 9.76 shares of common stock in two steps.

To cover tax obligations on these vestings, the company withheld 593 shares on May 20 at $459.62 per share and 693 shares on May 21 at $486.46 per share, coded as F transactions. These are not open‑market sales but share-withholding for taxes under Rule 16b-3(e).

After the transactions, Vidyadhara directly held 88,764 shares of Western Digital common stock. No open‑market purchases or sales were reported; the filing reflects compensation-related vesting, derivative conversion, and associated tax withholding.

Western Digital’s Chief Sales & Marketing Officer Brian Scott Davis reported routine equity compensation-related transactions. On May 20 and 21, 2026, he exercised dividend equivalent rights and related awards, acquiring additional common stock, and had shares withheld to cover tax obligations tied to vesting.

The filing shows 1,309 shares of common stock were disposed of as tax-withholding under code F, while derivative exercises under code M converted dividend equivalent rights into common stock. After these transactions, Davis directly held 104,264 shares of Western Digital common stock.

WESTERN DIGITAL CORP director Bruce E. Kiddoo reported a charitable stock donation. On May 15, he transferred 100 shares of Common Stock as a bona fide gift to a charitable organization at a reported price of $0.00 per share, indicating no sale proceeds. After this gift, he directly holds 4,653 shares of Western Digital common stock. This is a non-market, non-cash transaction that reflects a personal donation rather than a typical buy or sell in the open market.

Western Digital Corp's Chief Sales & Marketing Officer Brian Scott Davis sold 10,000 shares of common stock on May 11, 2026 in multiple open-market transactions. Sale prices ranged from $488.9450 to $510.3800 per share under a pre-arranged Rule 10b5-1 trading plan adopted on November 3, 2025. After these trades, he directly holds 105,564 shares.

WESTERN DIGITAL CORP’s Chief of Global Operations, Gubbi Vidyadhara K, reported an open-market sale of company stock. On May 4, 2026, he sold 4,674 shares of Western Digital common stock at an average price of $443.185 per share. After this transaction, he directly owns 90,041 common shares of the company.

Western Digital Corp Chief Executive Officer Irving Tan reported selling 20,000 shares of company common stock in open‑market transactions. The sales occurred on May 1, 2026 in nine separate trades at weighted average prices generally around $406–$415 per share, as described in the pricing footnotes.

The filing states these sales were made under a pre‑arranged Rule 10b5‑1 trading plan adopted by Tan on May 12, 2025. After the transactions, he continues to hold 598,150 shares of Western Digital common stock directly.

WESTERN DIGITAL CORP Chief Legal Officer Cynthia L. Tregillis reported multiple equity transactions involving the company’s common stock. She sold 363 shares in an open-market trade at $377.09 per share, under a pre-arranged Rule 10b5-1 trading plan.

On the prior day, 1,308 shares were withheld to cover tax obligations tied to vesting, and dividend equivalent rights were exercised and converted on a one-for-one basis into 12.4923 shares of common stock. After these transactions, she directly holds 120,023 shares, indicating that the sale represents a relatively small portion of her overall position.

Western Digital Corp's Chief of Global Operations, Gubbi Vidyadhara K, reported routine equity compensation activity involving tax withholding and dividend equivalents. On common stock that vested, 4,595 shares were withheld to cover tax obligations, treated as a share disposition but not an open-market sale.

On the same date, dividend equivalent rights were converted into 34.8121 shares of common stock, and an additional 34 common shares were acquired through a derivative exercise at no cash exercise price. After these transactions, he directly holds 94,715 common shares and retains 254.8715 dividend equivalent rights.

Western Digital CEO Irving Tan reported routine equity compensation activity. Dividend equivalent rights converted into 49.3438 shares of common stock in connection with restricted stock unit vesting, while 1,042 shares were withheld to cover tax obligations under Rule 16b-3(e). After these transactions, he directly holds 618,150 shares of common stock.

Western Digital Corp Chief Sales & Marketing Officer Brian Scott Davis reported routine equity compensation activity. Dividend equivalent rights covering 7.2867 units were exercised into an equal number of common shares in connection with restricted stock unit vesting. On the same date, 961 common shares were withheld at $293.10 per share to satisfy tax obligations, leaving him with 115,564 common shares directly owned. These transactions reflect compensation vesting and tax withholding, not open-market buying or selling.

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 received a grant of 40.707 dividend equivalent rights tied to previously awarded restricted stock units. These rights vest proportionately with the related RSUs and each right represents a contingent right to receive one share of common stock or its cash value. Following this award, her reported balance of dividend equivalent rights is 345.120. This is a compensation-related, non–open-market transaction.

Western Digital Corp’s Chief Executive Officer Irving Tan reported a compensation-related award of dividend equivalent rights tied to previously granted restricted stock units. He acquired 122.5747 dividend equivalent rights at a stated price of $0.0000, bringing his total reported dividend equivalent rights holdings to 998.1879.

Each dividend equivalent right represents a contingent right to receive one share of Western Digital common stock or the cash value of a share, and will vest in step with the underlying restricted stock units. This is a non-market, derivative-based award rather than an open-market share purchase or sale.

Western Digital director Stephanie A. Streeter received a small grant of dividend equivalent rights tied to existing restricted stock units. On this Form 4, she acquired 0.6503 dividend equivalent rights, each representing a contingent right to receive one share of Western Digital common stock or the cash value of a share. Following this grant, her reported balance of these dividend equivalent rights is 1.7824, and they will vest in step with the related restricted stock units.

Sennesael Kris reported acquisition or exercise transactions in this Form 4 filing.

Western Digital’s Chief Financial Officer Kris Sennesael received a small compensation-related award linked to existing stock units. He was granted 69.481 dividend equivalent rights on Dividend Equivalent Rights, each tied to previously awarded restricted stock units. Following this award, his holdings of these dividend equivalent rights total 578.0896.

According to the disclosure, each dividend equivalent right will vest in step with the related restricted stock units and represents a contingent right to receive one share of Western Digital common stock or its cash value. This is a routine, non‑market transaction and does not involve any open‑market buying or selling of shares.

Oulman Roxanne reported acquisition or exercise transactions in this Form 4 filing.

Western Digital Corp director Roxanne Oulman reported a small compensation-related stock accrual. She received 0.6503 dividend equivalent rights tied to previously awarded restricted stock units (RSUs), each representing a contingent right to receive one share of common stock or its cash value.

These dividend equivalent rights vest proportionately with the related RSUs rather than being an open-market purchase or sale. Following this grant, her reported derivative holdings in these rights total 1.7824, reflecting routine equity-based compensation rather than an active trading decision.

Western Digital director Matthew E. Massengill reported a routine compensation-related award of dividend equivalent rights. On this Form 4, he acquired 11.8849 dividend equivalent rights linked to previously granted restricted stock units. Following this grant, he holds a total of 104.7371 dividend equivalent rights, each tied to Western Digital common stock or its cash value as the underlying RSUs vest.

Western Digital director Bruce E. Kiddoo reported an automatic grant of dividend equivalent rights tied to existing restricted stock units. On the transaction date, he acquired 0.6503 dividend equivalent rights, each linked to an equal number of underlying common shares, bringing his total dividend equivalent rights to 1.7824. These rights vest proportionately with the related RSUs and represent a contingent right to receive either one share of Western Digital common stock or the cash value of that share when the RSUs vest.

Gubbi Vidyadhara K reported acquisition or exercise transactions in this Form 4 filing.

Western Digital Corp's Chief of Global Operations, Gubbi Vidyadhara K, received a grant of 34.6578 Dividend Equivalent Rights on Common Stock. These rights accrued on previously awarded restricted stock units and will vest proportionately with those units. Following this grant, the reported balance of Dividend Equivalent Rights is 289.6836, each representing a contingent right to receive one share of common stock or its cash value.

Feller Brad reported acquisition or exercise transactions in this Form 4 filing.

Western Digital senior vice president and chief accounting officer Brad Feller received a grant of 4.065 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, vesting in step with the related RSUs. Following this grant, he holds a total of 11.1408 dividend equivalent rights.

DOLUCA TUNC reported acquisition or exercise transactions in this Form 4 filing.

Western Digital director Tunc Doluca received a grant of 0.6503 dividend equivalent rights tied to previously awarded restricted stock units. Following this award, he holds 1.7824 dividend equivalent rights, each representing a contingent right to receive one share of common stock or its cash value as the related RSUs vest.

Western Digital Corp Chief Sales & Marketing Officer Brian Scott Davis received a small compensation-related award linked to existing equity grants. He acquired 26.1629 dividend equivalent rights on 2026-03-18, bringing his holdings in this derivative instrument to 217.4250 rights.

The dividend equivalent rights accrued on previously granted restricted stock units and will vest in step with those units. Each right represents a contingent entitlement to receive one share of Western Digital common stock, or the cash value of a share, rather than an open-market stock purchase.

Western Digital director Cole Martin I received a grant of dividend equivalent rights tied to previously awarded restricted stock units. On this Form 4, he acquired 0.7857 dividend equivalent rights, bringing his total to 2.1535. These rights will vest in step with the related RSUs and each represents a contingent right to receive one share of common stock or the cash value.

WESTERN DIGITAL CORP director Kimberly Alexy received 0.6503 dividend equivalent rights linked to restricted stock units. These rights were granted at no exercise price and increase her directly owned derivative position to 1.7824 dividend equivalent rights, each tied to potential delivery of common stock or its cash value as related RSUs vest.

Western Digital Corp’s Chief Product Officer Ahmed Mohammed reported routine equity compensation activity. On March 17, 2026, dividend equivalent rights covering 196.5574 units were exercised and settled in 196 shares of common stock. On the same date, 20,595 shares were withheld at $313.81 per share to cover tax obligations related to vesting, leaving Mohammed with 164,319 directly owned common shares, including shares previously acquired under the employee stock purchase plan. On March 18, 2026, he received a grant of 75.7646 dividend equivalent rights, bringing his dividend equivalent rights balance to 450.8467. These transactions reflect compensation vesting and tax withholding rather than open‑market buying or selling.

Western Digital Corp executive Gubbi Vidyadhara K, Chief of Global Operations, sold 8,518 shares of common stock in an open-market transaction. The shares were sold at an average price of $255.325 per share. After this sale, he continues to hold 99,276 Western Digital shares directly.

WESTERN DIGITAL CORP Chief Legal Officer and Corporate Secretary Cynthia L. Tregillis reported multiple transactions in the company’s common stock. She sold a total of 9,324 shares in open-market sales, including 777 shares at $257.91 per share and 8,547 shares at a weighted average price of $269.2156 per share, under a Rule 10b5-1 trading plan adopted on May 23, 2025.

She also acquired 23 shares of common stock upon the conversion of 23.8133 dividend equivalent rights tied to restricted stock units, and 2,798 shares were withheld at $250.61 per share to cover tax obligations related to vesting. After these transactions, she directly held 121,682 shares of common stock and 304.413 dividend equivalent rights.

Western Digital Corp Chief Executive Officer Irving Tan reported equity award activity involving dividend equivalents and common stock. On March 3, 2026, dividend equivalent rights representing 92.8686 units were converted into and paid in 92 shares of Western Digital common stock in connection with the vesting of related restricted stock units. A separate cash payment settled a fractional dividend equivalent right.

On the same date, 3,512 shares of common stock were disposed of at $250.61 per share to satisfy tax withholding obligations tied to the vesting of securities, a non-open-market, tax-related transaction. After these transactions, Tan directly held 619,143 shares of Western Digital common stock.

Western Digital executive Gubbi Vidyadhara K, Chief of Global Operations, reported multiple stock moves. On March 4, 2026, he sold a total of 10,148 shares of common stock in open-market transactions at prices around $269–$271, leaving 107,794 shares held directly afterward.

On March 3, 2026, dividend equivalent rights tied to restricted stock units converted into 47 shares of common stock, and 7,054 shares were withheld to cover tax obligations in connection with vesting, as permitted under Rule 16b-3(e).

Western Digital Chief Sales & Marketing Officer Brian Scott Davis reported equity award activity tied to vesting restricted stock units. On March 3, 2026, dividend equivalent rights converted into 23.8133 dividend equivalent rights and were paid in Western Digital common stock on a one-for-one basis in connection with RSU vesting, with a small cash payment for a fractional right.

The filing also shows the related issuance of 23 shares of common stock at a stated price of $0.0000 per share from the derivative conversion, and a disposition of 3,526 shares of common stock at $250.6100 per share to satisfy tax obligations by share withholding under Rule 16b-3(e). After these transactions, Davis directly held 116,518 shares of Western Digital common stock.

Western Digital Corp director Martin I Cole reported selling 6,000 shares of common stock in a series of open-market transactions on March 2, 2026. The trades, executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025, occurred at prices generally between about $263.66 and $281.99 per share. Following these sales, Cole directly owned 29,433 shares of Western Digital common stock.

Western Digital Corp Chief Legal Officer Cynthia L. Tregillis reported several equity transactions involving company stock. On February 26, 2026, she completed an open-market sale of 214 shares of common stock at $286.11 per share, under a pre-established Rule 10b5-1 trading plan adopted on May 23, 2025.

On February 25, 2026, dividend equivalent rights converted into 6.5619 shares of common stock on a one-for-one basis in connection with vesting restricted stock units, and 6 additional common shares were acquired through a derivative exercise. Also on that date, 770 common shares were disposed of to cover tax obligations at $290.95 per share. After these transactions, she directly owned 133,781 common shares.

Western Digital director and Chief Executive Officer Irving Tan reported equity-related transactions on February 25, 2026. Dividend equivalent rights were exercised into 27 shares of common stock at $0.00 per share, increasing his direct holdings to 622,988 shares. In a separate transaction, 425 shares of common stock were withheld at $290.95 per share to cover tax obligations related to vesting, a tax-withholding disposition rather than an open-market sale.

Western Digital’s Chief of Global Operations, Gubbi Vidyadhara K, converted 7.7240 Dividend Equivalent Rights into common stock in connection with restricted stock unit vesting, receiving 7 shares and cash for a fractional right. To cover related taxes, 1010.0000 shares of common stock were withheld at $290.9500 per share. After these transactions, he directly holds 124,949 shares of Western Digital common stock.

Western Digital’s Chief Sales & Marketing Officer Brian Scott Davis reported equity award activity. On February 25, 2026, dividend equivalent rights were exercised and converted into 6.5619 dividend equivalent rights and 6 shares of common stock at $0.0000 per share as part of restricted stock unit vesting. Following these transactions, he held 215.0754 dividend equivalent rights and 120,870 shares of common stock before tax withholding.

To satisfy tax obligations related to the vesting, 849 shares of common stock were withheld at a value of $290.9500 per share, leaving Davis with 120,021 directly owned common shares. The filing characterizes this as payment of tax obligations by withholding securities rather than an open-market sale.