William D Mosley $STX SEC Form 4 Insider Trading

William D Mosley has filed a total of 98 insider trades in $STX since 2021. Their most recent trade was a sale of 5,338 shares, made on Dec 01, 2025. Their largest trade was a sale of 153,188 shares, made on Dec 08, 2023. We estimate that they now own 449,895 shares of $STX, worth an estimated $126.3 million.

Insider Trading at $STX

There have been a total of 255 insider trades reported at $STX since 2021, with 321 shares purchased and 5.8 million shares sold. The most active insider traders in $STX stock have been Gianluca Romano, William D Mosley, and William D Mosley. The most recent trade was a sale of 2,010 shares reported by Ban Seng Teh (EVP & Chief Commercial Officer), made on Dec 11, 2025.

$STX Executives and Stock Owners with Insider Trades

• Gianluca Romano, EVP & CFO

• William D Mosley, Chief Executive Officer

• William D Mosley, CEO

• Ban Seng Teh, EVP & Chief Commercial Officer

• James Ci Lee, Chief Legal Officer

• Jeffrey D. Nygaard, EVP, Operations and Technology

• John Christopher Morris, SVP & CTO

• John Christopher Morris, EVP & CTO

• Ban Seng Teh, EVP, Global Sales

• John Christopher Morris, SVP, HDD & SDD Products & CTO

• Katherine Schuelke, SVP, CLO & Corporate Secretary

• Ravi Naik, EVP & CIO

• Jeffrey D. Nygaard, Executive Vice President

• Kian Fatt Chong, SVP, Global Operations

• James Ci Lee, EVP & CLO

• Jeffrey D. Fochtman, SVP, Business & Marketing

• Kian Fatt Chong, EVP Global Operations

*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.