ACM Research, Inc. 8-K

What Happened

• ACM Research, Inc. (ACMR) filed a Current Report on Form 8-K (Item 8.01) on January 30, 2026, announcing that its operating subsidiary ACM Research (Shanghai), Inc. ("ACM Shanghai") notified the Shanghai Stock Exchange that ACM Research intends to sell 4,801,648 shares of ACM Shanghai through an inquiry-based transfer plan.
• The 4,801,648 shares represent approximately 1.34% of ACM Research’s ownership interest in ACM Shanghai and roughly 1% of ACM Shanghai’s total outstanding shares, each as of January 30, 2026. The notice was posted to the SSE website on January 30, 2026.

Key Details

• Shares to be sold: 4,801,648.
• Ownership impact: ~1.34% of ACM Research’s stake in ACM Shanghai; ~1% of ACM Shanghai’s total outstanding shares (as of 1/30/2026).
• Use of proceeds: net proceeds intended for general corporate purposes.
• Filing specifics: Notice to Shanghai Stock Exchange posted 1/30/2026; included as Exhibit 99.1 to the 8-K. The disclosure is furnished (not “filed”) and contains customary forward-looking cautionary language.

Why It Matters

• This is a small, defined reduction in ACM Research’s economic interest in its Shanghai operating subsidiary and could generate cash for corporate use without indicating a major change in control.
• Investors should note the size of the sale (about 1% of ACM Shanghai’s outstanding shares) and that actual sales, timing, prices, and total proceeds were not specified and remain subject to market conditions and further steps under the transfer plan.