Derivative exercise or conversion — not an open-market buy.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell
View the official recordSEC Form 4 — Statement of Changes in Beneficial OwnershipAll the details
Dates, kept separate
Transaction date
Dec 20, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 22, 2025
CEOOption exercise
Context
Classification
option exercise
Code M — exercise or conversion of a derivative security
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001266824-25-000292
Filed / recorded
Dec 22, 2025, 9:51 PM UTC
Added to OQRO
Oct 2, 2026, 12:29 PM UTC
Parser
form4-xml-v1
Data quality
Verified: identifiers matched exactly
Issuer
WESTERN DIGITAL CORP
Issuer CIK
106040
Ticker
WDC
Reporting person
Irving Tan
Relationship
Director, Officer
Officer title
Chief Executive Officer
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Dec 20, 2025
Transaction code
M
Shares / units
43
Price per share
$0.00
Acquired / disposed
Acquired (A)
Shares owned after
644,553
Ownership form
Direct
Amendment
No
Footnotes from the filing
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.