Form 4: Western Digital CLO Sells Shares Under 10b5-1 Plan

Western Digital's Chief Legal Officer, Cynthia L. Tregillis, reported the sale of common stock, including shares withheld for tax obligations, under a pre-arranged Rule 10b5-1 trading plan.

Summary

• Cynthia L. Tregillis, Chief Legal Officer & Corporate Secretary of Western Digital Corporation, reported transactions involving the company's common stock.
• On February 25, 2026, 6 shares of common stock were acquired at $0.0, resulting from the conversion of dividend equivalent rights upon the vesting of restricted stock units.
• On the same date, 770 shares of common stock were disposed of at $290.95 to satisfy tax obligations related to the vesting of securities.
• On February 26, 2026, 214 shares of common stock were sold at $286.11.
• These sales were executed under a Rule 10b5-1 trading plan adopted by Ms. Tregillis on May 23, 2025.
• Following these transactions, Ms. Tregillis beneficially owns 133,781 shares of Western Digital common stock directly.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, typical for executive compensation and diversification under a pre-arranged trading plan, with no immediate positive or negative implications for the company's operational performance or strategic direction.

Positives

• The acquisition of 6 shares of common stock at $0.0 indicates the vesting of restricted stock units and conversion of dividend equivalent rights, suggesting compensation realization.
• The transactions were executed under a pre-arranged Rule 10b5-1 trading plan, indicating planned and not opportunistic sales.

Negatives

• The disposition of 770 shares for tax obligations and the sale of 214 shares represent a reduction in direct beneficial ownership by the Chief Legal Officer.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that routine insider transactions, particularly those executed under a Rule 10b5-1 plan, are common across the technology and semiconductor storage industry as a mechanism for executives to manage their equity compensation and diversify their holdings in a compliant manner. These transactions generally do not reflect a change in management's outlook on the company's prospects.

Related Party Transactions

• The reported transactions are by a corporate officer, Cynthia L. Tregillis, making them related party transactions by definition.

Stakeholder Impact

• Shareholders: The sale of shares by a key executive could be perceived as a slight reduction in insider alignment, though mitigated by the 10b5-1 plan. The overall impact on the company's stock price is likely minimal given the routine nature and relatively small volume compared to total outstanding shares.
• Employees: No direct impact on employees is indicated.
• Customers/Suppliers/Creditors: No direct impact on these stakeholders is indicated.

Key Dates

Recommendation

The transactions reported are routine insider sales executed under a pre-arranged Rule 10b5-1 trading plan, which is a common practice for executives to manage their equity compensation and diversify holdings. These sales do not typically signal a change in the company's fundamentals or management's confidence, thus a 'hold' recommendation is appropriate as this filing alone does not provide new information to alter an investment thesis.

Keywords

Western Digital, WDC, Form 4, Insider Trading, Stock Sale, Rule 10b5-1, Cynthia Tregillis, Chief Legal Officer, Corporate Secretary, Equity Compensation