Shihab Ahmed Mohammed 4

4 · WESTERN DIGITAL CORP · Filed Mar 19, 2026

AI-generated summary of this filing

Updated Mar 19, 2026

Western Digital CPO Shihab Mohammed Sells 20,595 Shares ($6.46M)

What Happened

Shihab Ahmed Mohammed, Chief Product Officer at Western Digital (WDC), had shares withheld to satisfy tax obligations tied to the conversion/vesting of equity awards. On March 17, 2026, derivative conversions/exercises resulted in shares being issued and then 20,595 shares were withheld (disposed) at $313.81 per share to cover taxes, totaling $6,462,917. The filing also shows small derivative conversions (~196 and ~196.56 shares) and a subsequent grant/award of 75.765 shares on March 18, 2026.

Key Details

Primary dates: March 17, 2026 (derivative conversions/exercises and tax withholding); March 18, 2026 (grant/award).
Tax withholding: 20,595 shares withheld at $313.81 each = $6,462,917 (transaction code F, payment of tax obligation by withholding securities).
Derivative activity: exercise/conversion entries (transaction code M) for ~196 and ~196.557 shares (reported at $0 acquisition price as conversions of derivative rights).
Award: 75.765 shares reported as a grant/award on March 18 (transaction code A, $0).
Notable footnotes: dividend equivalent rights were converted into shares on a one-for-one basis in connection with RSU vesting (fractional amount settled in cash); tax withholding occurred under Rule 16b-3(e); filing excerpt notes inclusion of 484 ESPP shares from Nov 30, 2025.
Shares owned after transaction: not reported in the provided excerpt.
Timeliness: no late filing indicator provided in the supplied data.

Context

This was not an open-market sale for cash gain but a routine withholding of shares to satisfy tax liabilities arising from vesting/conversion of equity awards (a common payroll tax practice). Such withholding should not be read by itself as a directional signal about the insider's view of the company.

Form 4

Period: 2026-03-17

Chief Product Officer

Transactions

Exercise/Conversion
Common Stock
[F1][F2]
2026-03-17+196→ 184,914 total
Tax Payment
Common Stock
[F3]
2026-03-17$313.81/sh−20,595$6,462,917→ 164,319 total
Exercise/Conversion
Dividend Equivalent Rights
[F1]
2026-03-17−196.557→ 375.082 total
→ Common Stock (196.557 underlying)
Award
Dividend Equivalent Rights
[F4]
2026-03-18+75.765→ 450.847 total
→ Common Stock (75.765 underlying)

Footnotes (4)

[F1]The dividend equivalent rights were converted into, and paid in the form of, shares of the Issuer's common stock on a one-for-one basis in connection with the vesting of restricted stock units to which the dividend equivalent rights relate. A cash amount was also paid to the holder to settle a fractional dividend equivalent right.
[F2]Includes 484 shares acquired under the Issuer's Employee Stock Purchase Plan on November 30, 2025.
[F3]Payment of tax obligation by withholding securities incident to the vesting of securities in accordance with Rule 16b-3(e).
[F4]The dividend equivalent rights accrued on previously awarded restricted stock units (RSUs) which vest proportionately with the RSUs to which they relate. Each dividend equivalent right represents a contingent right to receive one share of the Issuer's common stock or the cash value thereof.

Signature

By: /s/ Sandra Garcia Attorney-in-Fact For: Ahmed Mohammed Shihab|2026-03-19

1 file