William D. Mosley, CEO and Director of Seagate Technology Holdings plc (NASDAQ:STX), filed a Form 4 on November 3, 2026, disclosing the sale of 6,510 ordinary shares on November 2, 2026, across fourteen separate transactions executed under a Rule 10b5-1 trading plan.

Key Highlights

  • Reporting person: William D. Mosley, CEO and Director of Seagate Technology Holdings plc
  • Transaction date: All 14 sales were executed on November 2, 2026
  • Total shares sold: 6,510 ordinary shares disposed of (transaction code S)
  • Price range: Individual trade prices ranged from $617.17 to $644.50 per share across the multiple transactions
  • Post-transaction ownership: 346,108.25 ordinary shares beneficially owned directly following the reported transactions
  • Trading plan: All transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by Mosley on February 18, 2026

Mosley's November 2 Sales Across Fourteen Price Tranches

According to the filing, Mosley disposed of ordinary shares in fourteen separate sale transactions on November 2, 2026, all coded as "S" disposals in Table I. The share amounts per transaction ranged from 80 shares to 1,160 shares. Many of the transactions represent weighted average prices, as the filing states they were each executed across multiple trades within defined price bands, with Mosley undertaking to provide full trade-by-trade detail upon request to the SEC staff, the issuer, or any security holder.

The weighted average sale prices reported for the fourteen transactions were: $617.6681, $618.7973, $619.5962, $620.8028, $621.8948, $623.0083, $623.9094, $625.6788, $632.55, $633.6367, $636.08, $640.46, $642.78, and $644.43, with individual trade prices in the ranges disclosed spanning from $617.17 at the low end to $644.50 at the high end. Prior to these sales, Mosley held 352,618.25 shares directly, calculated from the filing's sequential post-transaction balances beginning at 351,868.25 following the first reported sale of 960 shares.

The filing confirms that all transactions reported were effected pursuant to a Rule 10b5-1 trading plan that Mosley adopted on February 18, 2026. The Form 4 was signed by Louis J. Thorson as Attorney-in-Fact for William D. Mosley and filed on November 3, 2026. No derivative securities transactions were reported in Table II.

What Was Disclosed

Seagate Technology Holdings plc CEO William D. Mosley disclosed the sale of 6,510 ordinary shares on November 2, 2026, across fourteen transactions at weighted average prices between $617.6681 and $644.43, leaving him with 346,108.25 directly held shares. All sales were conducted under a pre-established 10b5-1 plan.