Form 4: Seagate CEO Mosley Reports RSU Vesting & Tax Sales

Seagate Technology Holdings plc CEO William D. Mosley reported the vesting of Restricted Share Units and subsequent tax-related share dispositions.

Summary

• William D. Mosley, CEO and Director of Seagate Technology Holdings plc, reported transactions involving Ordinary Shares.
• On December 9, 2025, Mosley acquired 2,815 Ordinary Shares and 2,415 Ordinary Shares through the vesting of Restricted Share Units (RSUs) under the 2022 Equity Incentive Plan.
• These acquisitions were at a price of $0 per share, reflecting the nature of RSU vesting.
• Following these acquisitions, Mosley disposed of 1,423 Ordinary Shares and 1,221 Ordinary Shares at a price of $282.86 per share.
• These dispositions were likely "sell-to-cover" transactions to satisfy tax withholding obligations related to the RSU vesting.
• The transactions were made pursuant to a Rule 10b5-1(c) pre-arranged plan.
• After these transactions, Mosley beneficially owns 448,254 Ordinary Shares directly.
• Mosley also holds 8,445 and 26,573 Restricted Share Units, respectively, following these transactions.

Sentiment

Score: 5

Explanation: The filing reports routine, pre-planned insider transactions related to executive compensation, which are neutral in sentiment. There are no unexpected positive or negative disclosures.

Positives

• The vesting of Restricted Share Units indicates continued long-term incentive alignment between the CEO and shareholder interests.
• The transactions were executed under a Rule 10b5-1(c) plan, suggesting pre-planned, non-discretionary activity.

Negatives

• The disposition of shares, while for tax purposes, reduces the CEO's direct shareholding by 2,644 shares (1,423 + 1,221).

Future Outlook

NA

Industry Context

This filing is a routine disclosure of insider transactions and does not provide broader industry context or trends. It reflects standard executive compensation practices involving equity awards.

Comparison to Industry Standards

• The use of Restricted Share Units (RSUs) as a component of executive compensation is a common practice across the technology and broader corporate sectors, aligning executive incentives with long-term company performance.
• "Sell-to-cover" transactions for tax obligations upon RSU vesting are standard practice for executives in publicly traded companies, similar to those observed at companies like Western Digital or Micron Technology.

Stakeholder Impact

• Shareholders: The transactions are routine and reflect standard executive compensation, with a minor reduction in the CEO's direct shareholding due to tax sales. This is generally not expected to have a significant impact on shareholder value.
• Employees: No direct impact on employees beyond the CEO's compensation structure.

Next Steps

• Remaining portions of the RSU grants will vest in equal quarterly installments over the following three years from their respective initial vesting dates.

Key Dates

Recommendation

This Form 4 filing details routine, pre-scheduled insider transactions related to executive compensation (RSU vesting and tax-related sales). Such transactions are common and do not typically indicate a change in the company's fundamental outlook or the executive's confidence. Therefore, it provides no new information that would warrant a change in investment recommendation; a "hold" stance is appropriate based solely on this filing.

Keywords

Seagate Technology Holdings, STX, William D. Mosley, Form 4, Insider Trading, Restricted Share Units, RSU Vesting, Equity Incentive Plan, CEO, Director, Share Disposition, Tax Withholding, 10b5-1 Plan