Form 4: Seagate CEO Mosley Vests RSUs, Sells Shares for Tax

Seagate Technology Holdings plc CEO William D. Mosley reported the vesting of 3,319 restricted share units and the subsequent sale of 1,678 ordinary shares to cover tax obligations.

Summary

• William D. Mosley, CEO and Director of Seagate Technology Holdings plc, reported transactions on December 11, 2025.
• Mosley acquired 3,319 ordinary shares upon the vesting of restricted share units (RSUs) at a price of $0.
• Concurrently, 1,678 ordinary shares were disposed of at a price of $307.845 to satisfy tax withholding obligations related to the RSU vesting.
• Following these transactions, Mosley directly beneficially owns 449,895 ordinary shares.
• The vested RSUs were part of a grant under the Seagate Technology Holdings plc 2022 Equity Incentive Plan, with a four-year vesting schedule that began on September 11, 2024.
• Mosley now holds 23,233 derivative securities (remaining RSUs).

Sentiment

Score: 6

Explanation: The filing reports a routine executive compensation event (RSU vesting and tax-related sale). It is a neutral event, reflecting standard practice and continued alignment of executive incentives, with no significant positive or negative implications for the company's operational or financial performance.

Positives

• The vesting of restricted share units indicates continued long-term incentive alignment between the CEO and shareholder interests.
• The transaction is a routine vesting and tax-related sale, not a discretionary open-market sale, which is generally viewed neutrally or positively.

Negatives

• A portion of shares were sold, reducing the CEO's direct beneficial ownership by 1,678 shares, although this was for tax purposes.

Future Outlook

The filing details a vesting event for restricted share units that are part of a four-year vesting schedule, indicating future vesting events will occur in equal quarterly installments over the next three years from September 11, 2024.

Industry Context

This Form 4 filing is a routine disclosure of an insider transaction, specifically the vesting of executive compensation in the form of restricted share units and the subsequent sale of shares to cover tax obligations. It does not provide insights into broader industry trends for the data storage or technology sector but reflects standard executive compensation practices within publicly traded companies.

Related Party Transactions

• The vesting of restricted share units awarded to CEO William D. Mosley under the Seagate Technology Holdings plc 2022 Equity Incentive Plan.

Stakeholder Impact

• Shareholders: The transaction is a routine part of executive compensation, aligning the CEO's interests with shareholders through equity ownership. The sale of shares for tax purposes is a common practice and does not indicate a lack of confidence.
• Employees: Reflects the company's established equity incentive plans for executives.

Next Steps

• Future quarterly vesting installments of the remaining 23,233 restricted share units over the next three years from September 11, 2024.

Key Dates

Recommendation

This Form 4 filing details a routine executive compensation event involving the vesting of restricted share units and a subsequent tax-related sale of shares. It does not provide new information regarding the company's operational performance, financial health, or strategic direction that would warrant a change in investment recommendation. The transaction is an expected part of executive compensation and does not signal any material positive or negative developments for Seagate Technology Holdings plc.

Keywords

Seagate Technology Holdings, STX, Form 4, Insider Trading, William D. Mosley, CEO, Restricted Share Units, RSU Vesting, Share Sale, Tax Withholding, Equity Incentive Plan