Insider trade

Director sold ~$145K of WDC shares in the open market

Traded Dec 1, 2025 · Filed Dec 3, 2025

~$145K
Reported value · 900 sh @ $161.1691: 39K
Holds after · shares reported: +182.8%
stock since the trade · S&P 500 +12.3%, $163.54 → $462.56 on Oct 1

Why it stands out

A board member of Western Digital sold $145K of Western Digital shares. It was planned long ago, so it says very little.

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 Ownership

All the details

Dates, kept separate

Transaction date: Dec 1, 2025
Reporting period: Not applicable
Filed with the SEC: Dec 3, 2025

Director$100K–$500KPre-arranged plan referenced

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$145,052

Shares × reported transaction price

Timing vs results

32 days after results of Oct 30, 2025, 59 days before results of Jan 29, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $163.54 on Dec 1, 2025, 435% above its 52-week low and 6% below its high, after a 30% rise over the previous 30 trading days

52-week range $30.54 (Apr 4, 2025) to $174.22 (Nov 10, 2025), 93% of the way up, from 250 adjusted closes. 30 trading days earlier: $126.20 on Oct 17, 2025. Describes the past only, not a forecast

Layoff notice nearby

A WARN layoff notice covering 87 workers was filed in California on January 20, 2026.

From the official state WARN list, 50 days after the trade; 1 more notice by the company within 60 days. Shown for timing only; the two filings are separate

Planned / mechanical clue

Footnote references a pre-arranged trading plan (Rule 10b5-1)

Only flagged when a footnote says so; never inferred

After it was reported

After	Stock	S&P 500	Difference
7 days	+16.3%	+0.7%	+15.6%
30 days	+16.7%	+0.5%	+16.2%
90 days	+62.3%	+0.1%	+62.2%
180 days	+249.8%	+11.0%	+238.8%

Past results only. Not a forecast.

Source receipt

Record ID: 0001266824-25-000260
Filed / recorded: Dec 3, 2025, 11:13 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: Martin I Cole
Relationship: Director
Security: Common Stock
Table: Non-derivative (Table I)
Transaction date: Dec 1, 2025
Transaction code: S
Shares / units: 900
Price per share: $161.1691
Acquired / disposed: Disposed (D)
Shares owned after: 39,333
Ownership form: Direct
Amendment: No

Footnotes from the filing

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 1, 2025.
Represents the weighted average sale price per share. These shares were sold in multiple transactions at prices ranging from a low of $160.67 to a high of $161.63. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

Around the same time

10mo ago

82.42Derivative units

Compensation award — excluded from discretionary-purchase analysis.

Why it stands out Official record

10mo ago

43Shares

Derivative exercise or conversion — not an open-market buy.

Why it stands out Official record

10mo ago

967Shares · @ $181.08

Routine share withholding; mechanical by default.

Why it stands out Official record