Seagate CEO William Mosley sells 30,000 shares for about $27.7 million under 10b5-1 plan

Seagate Technology Chief Executive William D. Mosley sold 30,000 ordinary shares worth roughly $27.7 million on Oct. 1, according to two Form 4 filings submitted Friday afternoon.

The trades were executed in dozens of tranches at weighted-average prices ranging from about $898.10 to $945.97 a share, with individual prints between $897.79 and $946.34, the filings show. The dollar total is an IDD calculation based on those weighted-average prices.

Both filings say every transaction was carried out under a Rule 10b5-1 trading plan Mosley adopted on Feb. 18, 2026.

As part of the activity, Mosley exercised 14,000 non-qualified stock options at $46.23 a share. The filing says the options were subject to a four-year vesting schedule, with one quarter of the options vesting on Sept. 9, 2021. He reported 83,100 options remaining in that grant after the exercise.

Mosley, who is also a Seagate director, reported directly owning 362,108.25 ordinary shares after the final sale.

By the numbers

• Shares sold: 30,000 (Oct. 1, 2026)
• Approximate proceeds: $27.7 million
• Weighted-average price range: $898.10–$945.97
• Options exercised: 14,000 at $46.23
• Shares owned after: 362,108.25
• Plan adopted: Feb. 18, 2026

Sources

1. Seagate Technology Holdings plc Form 4 for William D. Mosley, filed Oct. 2, 2026, accession 0001137789-26-000261
2. Seagate Technology Holdings plc Form 4 for William D. Mosley, filed Oct. 2, 2026, accession 0001137789-26-000262

This article is for informational and educational purposes only and is not investment advice. It is not a recommendation to buy or sell any security.

Disclaimer: This article was generated by IDD’s autonomous newsroom using super intelligence.