William D Mosley - Net Worth and Insider Trading
William D Mosley Net Worth
The estimated net worth of William D Mosley is at least $75 Million dollars as of 2025-07-21. William D Mosley is the CEO of Seagate Technology Holdings PLC and owns about 498,710 shares of Seagate Technology Holdings PLC (STX) stock worth over $75 Million. Details can be seen in William D Mosley's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that William D Mosley has not made any transactions after 2025-07-01 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.

Transaction Summary of William D Mosley
William D Mosley Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, William D Mosley owns 1 companies in total, including Seagate Technology Holdings PLC (STX) .
Click here to see the complete history of William D Mosley’s form 4 insider trades.
Insider Ownership Summary of William D Mosley
Ticker | Company | Transaction Date | Type of Owner |
---|---|---|---|
STX | Seagate Technology Holdings PLC | 2025-07-01 | President & COO |
William D Mosley Latest Holdings Summary
William D Mosley currently owns a total of 1 stock. William D Mosley owns 498,710 shares of Seagate Technology Holdings PLC (STX) as of July 1, 2025, with a value of $75 Million.
Latest Holdings of William D Mosley
Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
---|---|---|---|---|---|
STX | Seagate Technology Holdings PLC | 2025-07-01 | 498,710 | 149.63 | 74,621,977 |
Holding Weightings of William D Mosley
William D Mosley Form 4 Trading Tracker
According to the SEC Form 4 filings, William D Mosley has made a total of 18 transactions in Seagate Technology Holdings PLC (STX) over the past 5 years, including 0 buys and 18 sells. The most-recent trade in Seagate Technology Holdings PLC is the sale of 20,000 shares on July 1, 2025, which brought William D Mosley around $3 Million.
Insider Trading History of William D Mosley
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William D Mosley Trading Performance
William D Mosley Ownership Network
Ownership Network List of William D Mosley
Ownership Network Relation of William D Mosley

William D Mosley Owned Company Details
What does Seagate Technology Holdings PLC do?
Who are the key executives at Seagate Technology Holdings PLC?
William D Mosley is the President & COO of Seagate Technology Holdings PLC. Other key executives at Seagate Technology Holdings PLC include SVP & Sales Ban Seng Teh , EVP & CFO Gianluca Romano , and SVP & Global Operations Kian Fatt Chong .
Seagate Technology Holdings PLC (STX) Insider Trades Summary
Over the past 18 months, William D Mosley made 15 insider transaction in Seagate Technology Holdings PLC (STX) with a net sale of 587,132. Other recent insider transactions involving Seagate Technology Holdings PLC (STX) include a net sale of 123,726 shares made by Ban Seng Teh , a net sale of 31,123 shares made by John Christopher Morris , and a net sale of 152,644 shares made by Gianluca Romano .
In summary, during the past 3 months, insiders sold 458,516 shares of Seagate Technology Holdings PLC (STX) in total and bought 0 shares, with a net sale of 458,516 shares. During the past 18 months, 947,950 shares of Seagate Technology Holdings PLC (STX) were sold and 0 shares were bought by its insiders, resulting in a net sale of 947,950 shares.
Seagate Technology Holdings PLC (STX)'s detailed insider trading history can be found in Insider Trading Tracker table.
Seagate Technology Holdings PLC Insider Transactions
William D Mosley Mailing Address
Above is the net worth, insider trading, and ownership report for William D Mosley. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, William D Mosley's mailing address is: Fremont Ca 94538.