ACM Research, Inc. 8-K

What Happened
ACM Research, Inc. (ACMR) filed a Form 8‑K on June 22, 2026 to furnish a Record of June 2026 Investor Relations Activity submitted by its operating subsidiary, ACM Research (Shanghai), Inc. (“ACM Shanghai”), which was posted by the Shanghai Stock Exchange (SSE) on the STAR Market website on June 18, 2026. A copy of the Record is attached to the 8‑K as Exhibit 99.1 (an unofficial English translation). The filing notes the furnished information is not “filed” for purposes of Section 18 of the Exchange Act and is not incorporated by reference into ACMR’s SEC filings.

Key Details

• ACM Shanghai’s Record of June 2026 Investor Relations Activity was posted to the SSE STAR Market on June 18, 2026.
• ACM Research, Inc. furnished the Record via Form 8‑K dated June 22, 2026; Exhibit 99.1 contains the Record (unofficial English translation).
• The 8‑K was signed by CFO and Treasurer Mark McKechnie.
• The company clarified the Record is furnished (not filed) and therefore not subject to Section 18 liability or automatic incorporation by reference.

Why It Matters
This is an investor‑relations disclosure from ACM Research’s Shanghai-listed operating unit, reflecting regulatory reporting on the SSE STAR Market. The 8‑K does not report earnings, management changes, or transactional terms — it furnishes a communication posted by ACM Shanghai. Retail investors should review the attached Record (Exhibit 99.1) and monitor ACM Shanghai’s STAR Market disclosures for any material updates that could affect ACMR’s business or cross‑listed interests.