Form 4: ACM Research SVP Exercises, Sells Shares Under 10b5-1 Plan

ACM Research's Senior Vice President, Sotheara Cheav, exercised stock options and sold an equal number of Class A Common Stock shares as part of a pre-arranged trading plan.

Summary

• Sotheara Cheav, Senior Vice President, Manufacturing of ACM Research (Shanghai), Inc., a subsidiary of ACM Research, Inc., executed a transaction on August 22, 2025.
• Cheav exercised a stock option to purchase 11,152 shares of Class A Common Stock at an exercise price of $13.89 per share.
• Concurrently, Cheav sold 11,152 shares of Class A Common Stock at a price of $30.00 per share.
• The sale was conducted pursuant to a Rule 10b5-1 trading plan, which was adopted by the reporting person on May 15, 2025.
• Following these transactions, Cheav directly beneficially owns 100,002 shares of Class A Common Stock and 66,250 derivative securities (stock options).

Sentiment

Score: 5

Explanation: The filing reports a routine, pre-planned insider transaction (option exercise and sale) which is generally considered neutral in terms of company-wide sentiment. It reflects an executive monetizing vested equity, which is a common occurrence.

Positives

• The reporting person realized a profit by exercising options at $13.89 and selling shares at $30.00, indicating a gain of $16.11 per share on 11,152 shares.
• The transaction was executed under a Rule 10b5-1 trading plan, demonstrating pre-planned and compliant insider trading.

Negatives

• The reporting person's direct beneficial ownership of Class A Common Stock decreased by 11,152 shares as a result of the sale.

Future Outlook

The filing indicates that 7,500 shares of a stock option will vest on May 15, 2026, and an additional 22,500 shares will vest in equal monthly installments over the following 36 months, subject to continued service.

Industry Context

This is a routine insider transaction and does not provide specific insights into broader industry trends or competitive landscape for ACM Research, Inc.

Stakeholder Impact

• Shareholders: The sale represents a minor reduction in direct insider ownership, which is a common occurrence for executives managing their personal portfolios. The transaction itself is unlikely to have a significant impact on the company's operational or strategic direction.
• Employees: No direct impact on employees is indicated by this filing.

Next Steps

• 7,500 shares of a stock option are scheduled to vest on May 15, 2026.
• The remaining 22,500 shares of a stock option will vest in equal monthly installments over 36 months following May 15, 2026, contingent on continued service.

Key Dates

Keywords

ACM Research, ACMR, Insider Trading, Form 4, Stock Option Exercise, Share Sale, 10b5-1 Plan, Executive Compensation, Sotheara Cheav