$WDC

Cole Martin I sold $1.6M of WDC

Cole Martin I sold 4,000 shares of WESTERN DIGITAL CORP (WDC) at an average of $395.47 ($390.04–$401.47, $1.58M total) across 12 trades on 2026-10-29 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Cole Martin I
Published Oct 30, 2026, 10:19 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Oct 30, 2026, 10:22 PM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$WDC
Bearish
medium confidence
Mentioned
$WDC
Relevance
5/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$WDCBearishLow
01

Why it matters

The disclosed sale reduces the director's ownership and may be interpreted as a lack of confidence, potentially influencing short‑term price action.

02

Market read

Insider sales are closely watched; this filing provides fresh data that could affect trader sentiment on WDC.

03

What to watch

The 10b5‑1 plan may have been set before any material news, reducing the signal strength.

Relevance 5/10Novelty 6/10Timing: after‑hours on 2026‑10‑29

Background

SEC Form 4 filing discloses insider transactions; such filings are primary sources for insider activity.

Company-level read

Ticker impact

$WDCBearishMedium confidence
Context

Director Cole Martin I sold 4,000 shares of Western Digital for $1.58M via a 10b5‑1 plan, reducing his stake to 17,433 shares.

Expected impact

likely downward pressure as the market prices the insider sell

Evidence & confidence

A $1.6M sale by a director is material enough to affect sentiment, but the amount is modest relative to market cap.

Market effects

May prompt scrutiny of other storage‑device manufacturers as insider activity is monitored.

Limited to U.S. technology sector; no broader regional effect.

Minimal global impact; primarily relevant to Western Digital investors.

Counterpoint

The sale could be routine under a pre‑arranged plan and not reflect negative outlook.

Key entities

  • Western Digital Corp

    US‑listed data storage hardware manufacturer (ticker WDC).

  • Cole Martin I

    Director of Western Digital who executed the sale.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

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