Form 4: ACMR Officer Sells Shares Under 10b5-1 Plan

Fuping Chen, VP of Sales-China at ACM Research, sold 120,000 shares of Class A Common Stock for approximately $3.98 million after exercising options.

Summary

• Fuping Chen, Vice President, Sales-China of ACM Research (Shanghai), Inc., a subsidiary of ACM Research, Inc. (ACMR), reported transactions involving the company's Class A Common Stock.
• On December 2, 2025, Chen exercised options to acquire 100,000 shares at an exercise price of $1.77 per share.
• Immediately following the option exercise on December 2, 2025, Chen sold all 100,000 acquired shares at a weighted average price of $33.20 per share, with prices ranging from $32.75 to $33.67.
• On December 3, 2025, Chen exercised options to acquire an additional 20,000 shares at an exercise price of $1.77 per share.
• On December 3, 2025, Chen sold 19,700 of the newly acquired shares at a weighted average price of $33.05 per share, with prices ranging from $32.51 to $33.48.
• Also on December 3, 2025, Chen sold the remaining 300 acquired shares at a weighted average price of $33.57 per share, with prices ranging from $33.53 to $33.59.
• All sales were conducted pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 28, 2025.
• Following these transactions, Chen directly beneficially owns 300 shares of Class A Common Stock and 21,165 stock options.

Sentiment

Score: 5

Explanation: Neutral. While insider selling can sometimes be viewed negatively, the execution under a pre-arranged Rule 10b5-1 plan mitigates concerns that the sale is based on new, adverse material information. It appears to be a planned liquidity event for the officer, who still retains a significant number of unexercised options.

Positives

• The officer successfully monetized a significant portion of vested stock options, realizing a substantial gain from the difference between the exercise price ($1.77) and the sale prices (averaging over $33).
• The sales were executed under a pre-arranged Rule 10b5-1 trading plan, indicating a planned liquidity event rather than a reaction to new negative company developments.

Negatives

• The transactions resulted in a reduction of the officer's direct beneficial ownership of Class A Common Stock from 120,000 shares (post-exercise, pre-sale) to 300 shares, which could be perceived as a decrease in insider alignment.

Future Outlook

This Form 4 filing is a transactional report and does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This insider transaction report is specific to ACM Research and its officer. It does not provide broader industry trends or competitive analysis.

Stakeholder Impact

• Shareholders may note the reduction in direct insider ownership, but the pre-planned nature of the sales under a 10b5-1 plan typically reduces concerns about management's immediate outlook on the company's prospects.

Key Dates

Recommendation

The filing details a pre-planned insider sale under a Rule 10b5-1 plan, which is a common practice for executives to manage personal finances and diversify holdings. While it represents a reduction in direct beneficial ownership, the pre-scheduled nature suggests it is not driven by new negative information about the company. The officer still retains a substantial number of unexercised options. Therefore, this transaction alone does not provide a strong signal for a 'buy' or 'sell' recommendation, warranting a 'hold' position based solely on this filing.

Keywords

ACM Research, ACMR, Insider Transaction, Form 4, Stock Option Exercise, Share Sale, 10b5-1 Plan, Fuping Chen, Officer Transaction