William D Mosley has sold STX and made no open-market buys since Sep 2019

Dr. William D. “Dave” Mosley is the Chief Executive Officer and Chairman of the Board of Seagate Technology Holdings plc (STX), a global leader in mass‑capacity data storage solutions.( Mosley has served as Seagate’s CEO since 2017 and was elected to the company’s board that same year, later becoming Chairman in 2025.( As a corporate insider, he has executed multiple significant equity transactions in Seagate stock, including multimillion‑dollar sales reported in regulatory filings, reflecting his substantial ongoing ownership stake in the company.(

Mosley joined Seagate in 1996 and has held senior leadership roles across research and development, sales and marketing, and operations, helping drive the company’s strategic transformation and technology roadmap.( Under his leadership, Seagate has doubled its shipped storage capacity and introduced innovations such as the world’s first hard drives using heat‑assisted magnetic recording (HAMR) technology to address rapidly growing AI‑driven data storage needs.( He holds a doctorate in solid‑state physics from the University of California, Davis, providing a strong technical foundation for his leadership in the data storage industry.( Mosley also extends his boardroom experience beyond Seagate, serving on the Board of Directors of Cirrus Logic, Inc. since 2024.(

Written by Perplexity from public sources.