Form 4: Ultra Clean Holdings CAO Executes Stock Sale

Chief Accounting Officer Brian E. Harding sold 16,764 shares of Ultra Clean Holdings, Inc. common stock on June 4, 2026.

Summary

• Brian E. Harding, Chief Accounting Officer of Ultra Clean Holdings, Inc., disposed of 16,764 shares of common stock.
• The transactions occurred on June 4, 2026, at prices ranging from $85.86 to $91.65 per share.
• The sales were executed pursuant to a pre-arranged Rule 10b5-1(c) trading plan.
• Following these transactions, the reporting person retains 28,055 shares of common stock.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the sale was conducted through a pre-arranged 10b5-1 plan, which is a standard administrative procedure for executives.

Positives

• The transactions were conducted under a pre-established Rule 10b5-1 trading plan, which is a standard mechanism for corporate insiders to sell shares without triggering concerns regarding non-public information.

Negatives

• The sale represents a significant reduction in the insider's direct equity stake in the company.

Risks

• Insider selling can sometimes be perceived by the market as a signal that management believes the stock price has reached a near-term peak.

Future Outlook

No forward-looking guidance or operational outlook was provided in this filing.

Industry Context

StockSavvy.ai notes that insider selling by high-level executives is a common occurrence for liquidity and diversification purposes, particularly when executed via pre-planned 10b5-1 programs, and does not necessarily reflect a change in the company's fundamental outlook.

Comparison to Industry Standards

• The use of Rule 10b5-1 trading plans is the industry standard for corporate officers to manage equity holdings while maintaining compliance with SEC regulations.

Stakeholder Impact

• Shareholders should note the reduction in insider ownership, though the systematic nature of the sale suggests personal financial planning rather than a reaction to company performance.

Key Dates

Keywords

Ultra Clean Holdings, UCTT, Insider Trading, Form 4, Chief Accounting Officer, Stock Sale, Rule 10b5-1