STX insider filing: Mosley vests RSUs and sells shares at $191.59
Rhea-AI Filing Summary
William D. Mosley, who is listed as both a Director and the CEO of Seagate Technology Holdings plc (STX), reported multiple transactions in the company's ordinary shares and related restricted share units on 09/09/2025.
The Form 4 shows a mix of acquisitions (grants/vests of RSUs) and dispositions (sales) executed the same day. After the reported transactions, Mr. Mosley beneficially owned 471,788 ordinary shares. Several RSU grants vested or were delivered under the Seagate Equity Incentive Plan, and certain share sales were executed at $191.59 per share.
Positive
- Continued substantial ownership: Reporting person retains 471,788 ordinary shares after transactions, signaling ongoing equity alignment with shareholders
- RSU vesting under plan: Multiple restricted share units vested or were delivered under the Seagate Equity Incentive Plan following standard vesting schedules as explained
- Transparent pricing on sales: Dispositions reported with a sale price of $191.59 per share, providing clear execution detail
Negative
- Share sales occurred: Multiple dispositions reduced holdings on the reported date, including sales at $191.59, which may be perceived as partial liquidity-taking
- Complex sequence of transactions: Numerous acquisitions and disposals on the same date could complicate interpretation of insider intent without additional context
Insights
TL;DR: Insider received multiple RSU vestings while selling a portion of shares the same day, leaving substantial ownership.
The filing documents routine equity compensation activity for a senior executive who is also a director. The mix of automatic RSU vesting and contemporaneous sales at a disclosed price is consistent with common compensation realization by executives. The remaining beneficial ownership of 471,788 shares indicates continued alignment with shareholders. No new pledges, option exercises for cash, or changes in indirect ownership were reported. Transactions are granular and appear to follow plan vesting schedules disclosed in the explanations.
TL;DR: Multiple same-day trades and RSU vestings; sales price disclosed, activity appears administrative rather than extraordinary.
The Form 4 records multiple transaction codes showing both acquisitions (RSU vestings) and dispositions (sales) all dated 09/09/2025. Dispositions were reported at $191.59 per share, and several RSU grants vested or were partially vested per the plan's schedule. The filing was signed by an attorney-in-fact, indicating the report was filed on behalf of the reporting person. There is no indication of derivative exercises for cash proceeds beyond RSU vesting and share disposals in the submitted tables.
Insider Trade Summary
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Restricted Share Unit | 9,007 | $0.00 | -- |
| Exercise | Restricted Share Unit | 2,815 | $0.00 | -- |
| Exercise | Restricted Share Unit | 9,662 | $0.00 | -- |
| Exercise | Restricted Share Unit | 4,550 | $0.00 | -- |
| Exercise | Ordinary Shares | 9,007 | $0.00 | -- |
| Tax Withholding | Ordinary Shares | 4,552 | $191.59 | $872K |
| Exercise | Ordinary Shares | 2,815 | $0.00 | -- |
| Tax Withholding | Ordinary Shares | 1,423 | $191.59 | $273K |
| Exercise | Ordinary Shares | 9,662 | $0.00 | -- |
| Tax Withholding | Ordinary Shares | 4,883 | $191.59 | $936K |
| Exercise | Ordinary Shares | 4,550 | $0.00 | -- |
| Tax Withholding | Ordinary Shares | 2,300 | $191.59 | $441K |
Footnotes (1)
- Consists of a grant of RSUs awarded to the Reporting Person under the Seagate Technology plc Equity Incentive Plan (the "Plan"). Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on September 9, 2022 and each one year anniversary thereafter for a total vesting period of four years. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on September 9, 2023 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Subject to the Reporting Person's continuous employment, one-quarter of the shares vested on September 9, 2025 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years. Consists of a grant of RSUs awarded to the Reporting Person under the Plan. Such RSUs vested 100% on September 9, 2025, the first anniversary of the grant.
