Form 4: ACMR CFO Exercises Options, Sells Shares Under 10b5-1 Plan

ACM Research CFO Lisa Feng exercised stock options and subsequently sold shares of Class A Common Stock under a pre-arranged trading plan on November 12 and 13, 2025.

Summary

• Lisa Feng, Chief Financial Officer of ACM Research (Shanghai), Inc., a subsidiary of ACM Research, Inc. (ACMR), reported transactions involving Class A Common Stock.
• On November 12, 2025, Feng exercised stock options to acquire 15,000 shares of Class A Common Stock at an exercise price of $5.60 per share.
• Immediately following the exercise on November 12, 2025, Feng sold 15,000 shares of Class A Common Stock at a price of $32.76 per share.
• On November 13, 2025, Feng again exercised stock options to acquire 15,000 shares of Class A Common Stock at an exercise price of $5.60 per share.
• Immediately following the exercise on November 13, 2025, Feng sold 15,000 shares of Class A Common Stock at a price of $33.77 per share.
• All sales were conducted pursuant to a Rule 10b5-1 trading plan adopted on August 13, 2025.
• Following these transactions, Feng beneficially owns 50,001 shares of Class A Common Stock.
• The stock options exercised were fully vested and exercisable with an expiration date of April 22, 2029.

Sentiment

Score: 5

Explanation: The filing reports routine insider transactions (option exercise and sale) executed under a pre-arranged 10b5-1 plan. While insider selling can sometimes be viewed cautiously, the planned nature of the transactions and the significant profit realized by the insider suggest a neutral impact on the company's fundamental outlook.

Positives

• The reporting person realized a significant profit by exercising options at $5.60 and selling shares at average prices of $32.76 and $33.77.
• The transactions were executed under a pre-arranged Rule 10b5-1 trading plan, indicating planned personal financial management rather than a reaction to new, non-public information.

Negatives

• Insider selling, even under a 10b5-1 plan, can sometimes be viewed with caution by investors, as it reduces the insider's direct equity stake in the company.

Future Outlook

No forward-looking statements or guidance are provided in this insider transaction report.

Industry Context

This Form 4 filing reports routine insider transactions and does not provide information related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: May observe a reduction in direct insider ownership, though the planned nature of the sale mitigates concerns.
• Employees: No direct impact mentioned.
• Customers: No direct impact mentioned.
• Suppliers: No direct impact mentioned.
• Creditors: No direct impact mentioned.

Key Dates

Keywords

ACMR, ACM Research, Lisa Feng, Insider Trading, Form 4, Stock Options, Beneficial Ownership, 10b5-1 Plan, Equity Sales, CFO