MOSLEY WILLIAM D sold $10.3M of STX
MOSLEY WILLIAM D (CEO) sold 11,002 shares of Seagate Technology Holdings plc (STX) at an average of $935.60 ($929.01–$945.97, $10.29M total) across 16 trades on 2026-10-01 under a Rule 10b5-1 trading plan.
How this was made
The 30-second read
Why it matters
The disclosed sale adds a fresh data point for valuation models and may influence short‑term trading strategies.
Market read
Insider sell of this size can trigger short‑term price pressure, especially given the CEO's role.
What to watch
The 10b5‑1 plan indicates pre‑scheduled sales, which may mitigate negative signaling.
Background
Form 4 filings disclose insider transactions; a CEO sale of over $10M is noteworthy for investors monitoring insider sentiment.
Ticker impact
CEO William Mosley sold $10.3M of shares via a Form 4 filing, reducing his stake to 362,108 shares.
likely downward pressure as the market prices in the insider sell
A $10M open‑market sale by the CEO is material for a mid‑cap like Seagate and often triggers short‑term selling pressure.
Market effects
Minimal impact on the broader data storage sector; investors may watch for similar insider activity.
U.S. market only; no broader regional effect.
Limited to Seagate shareholders and analysts.
Counterpoint
The sale could be a routine liquidity event unrelated to company outlook; the stock may remain stable.
Key entities
- companySeagate Technology Holdings plc
Data storage hardware manufacturer, ticker STX.
- personWilliam Mosley
CEO of Seagate, reporting the insider sale.



