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SEC EDGARSEP 161 min read$STX

MOSLEY WILLIAM D sold $75.6M of STX

MOSLEY WILLIAM D (CEO) sold 97,889 shares of Seagate Technology Holdings plc (STX) at $772.14 ($75.58M total) on 2026-09-15.

Original reporting
SEC EDGAR · MOSLEY WILLIAM D
Published Sep 16, 2026, 8:10 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 16, 2026, 8:22 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.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$STX
Bearish
medium confidence
Mentioned
$STX
Relevance
8/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$STXBearishMed
01

Why it matters

The transaction reduces insider ownership, potentially affecting investor confidence.

02

Market read

First‑report insider sale provides fresh material for traders evaluating short‑term price pressure on STX.

03

What to watch

No 10b5‑1 plan was used, suggesting the timing may be discretionary.

Relevance 8/10Novelty 8/10Timing: filing today

Background

Form 4 filings disclose insider transactions; a CEO sell of this magnitude is noteworthy.

Company-level read

Ticker impact

$STXBearishMedium confidence
Context

CEO William D. Mosley sold 97,889 shares for $75.6M, reducing his stake to 378,108 shares.

Expected impact

Possible modest decline or increased volatility in the near term.

Evidence & confidence

The sale size is material for a mid‑cap company and the insider is the CEO, which often influences market perception.

Market effects

Sector

May raise concerns for the data storage sector if other insiders follow suit.

Regional

Limited to U.S. and European investors tracking Seagate.

Global

Low global impact; primarily relevant to shareholders and sector traders.

Counterpoint

What could challenge this read

The sale could be a routine portfolio rebalancing unrelated to company fundamentals.

Key entities

  • Individual
    William D. Mosley

    CEO of Seagate Technology Holdings plc

  • Company
    Seagate Technology Holdings plc

    Data storage solutions provider, ticker STX

Read at source← All news

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.

STX insider trading history →

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