Teh Ban Seng, Executive Vice President and Chief Commercial Officer of Seagate Technology Holdings plc (NASDAQ:STX), filed a Form 4 on August 24, 2026, reporting a series of transactions in Ordinary Shares and derivative securities on August 20, 2026, executed under a pre-established Rule 10b5-1 trading plan.

Key Highlights

  • Rule 10b5-1 plan: All option exercises and share sales were made pursuant to a trading plan adopted by the reporting person on February 11, 2026.
  • RSU vestings and option exercise: A total of 18,189 Ordinary Shares were acquired via four "M" (exercise/conversion) transactions, including 2,267, 7,595, and 2,279 shares from restricted share units at $0, and 6,048 shares from an NQ Stock Option at an exercise price of $158.4.
  • Shares sold: A total of 5,002 Ordinary Shares were disposed of across multiple "S" (sale) transactions at weighted average prices ranging from $829.7733 to $852.6649 per share.
  • New grants received: The reporting person was awarded new restricted share units (1,775; 417; and 1,389 shares) and an NQ Stock Option for 4,736 shares at an exercise price of $850.24, expiring 08/20/2033.
  • Remaining beneficial ownership: Following all reported transactions, the reporting person directly held 15,072 Ordinary Shares.
  • Remaining derivative securities: The reporting person holds 6,804 restricted share units, 18,144 NQ Stock Options at $158.4, 4,736 NQ Stock Options at $850.24, and newly granted RSUs totaling 3,581 shares.

Details of Teh Ban Seng's August 20, 2026 Transactions in Seagate Ordinary Shares

According to the filing, Teh Ban Seng, serving as EVP and Chief Commercial Officer of Seagate Technology Holdings plc, conducted all reported transactions on August 20, 2026. The filing indicates the transactions were effected pursuant to a Rule 10b5-1 trading plan the reporting person adopted on February 11, 2026. Three restricted share unit awards converted into 2,267, 7,595, and 2,279 Ordinary Shares, respectively, each at a price of $0. Separately, 6,048 Ordinary Shares were acquired through the exercise of an NQ Stock Option at an exercise price of $158.4 per share.

The filing further discloses that 5,002 Ordinary Shares were sold across multiple tranches on the same date. Weighted average sale prices ranged from $829.7733 for the first 240-share tranche to $852.6649 for the final 610-share tranche. Several of these tranches involved multiple trades within narrow price bands, and the filing states the reporting person will provide full details regarding individual trade prices and quantities upon request to the SEC staff, the issuer, or a security holder.

In addition to the disposals, the filing reports that the reporting person received new grants on August 20, 2026, consisting of restricted share units for 1,775, 417, and 1,389 Ordinary Shares, and an NQ Stock Option covering 4,736 Ordinary Shares at an exercise price of $850.24, with an expiration date of 08/20/2033. After all reported transactions, the reporting person directly held 15,072 Ordinary Shares of record.

What Was Disclosed

The filing reports RSU vestings, an NQ Stock Option exercise, multiple open-market share sales, and new equity grants by Seagate's EVP and Chief Commercial Officer on August 20, 2026, all conducted under a pre-established Rule 10b5-1 plan adopted February 11, 2026.