4 Impact 6/10 Insider Transaction

$STX · Seagate Technology Holdings plc

September 16, 2026 · AI-analyzed SEC filing

Seagate CEO William Mosley exercised 177,000 options and immediately sold 97,889 shares at an average price of $772.14, generating $75.6 million in proceeds. The transaction was not executed under a pre-arranged 10b5-1 trading plan. Mosley retains 378,108 shares following the sale.

InsiderMOSLEY WILLIAM D (CEO)
Actionsale
Shares97,889
Price$772.14
Total value$75,584,518.74
Owned after378,108

STX is down 0.73% from the filing-time price of $788.96 in after-hours trading. A $75.6M CEO sale without a 10b5-1 plan is a notable liquidity event, though the stock's $175.6B market cap and 1.47% regular-session gain suggest limited immediate disruption.

A $75.6M discretionary CEO sale without a 10b5-1 plan is a high-dollar insider signal that warrants investor attention despite the company's $175.6B market cap.

Seagate competes with Western Digital (WDC) in the data-storage sector, which has benefited from AI-driven demand for high-capacity drives. Insider selling at elevated valuations is worth monitoring across the peer group.

CEO sold outside a 10b5-1 plan, meaning the trade reflects a discretionary decision rather than a pre-scheduled divestiture — this can signal reduced insider confidence.

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