Wang David H 4

What Happened

• David H. Wang — Chief Executive Officer, President, Director and 10% owner of ACM Research (ACMR) — was granted 6,208 restricted stock units (RSUs) on May 13, 2026. The award is reported as an acquisition (code A) at $0.00 because RSUs are a derivative right to receive shares in the future.
• Per the filing footnotes, each RSU converts to one share when settled and the number of units was determined using a 30-day lookback average fair market value of $51.54/share, implying a notional grant value of roughly $319,960 (≈ $320K). The RSUs vest in four equal annual installments beginning May 13, 2027.

Key Details

• Transaction date: May 13, 2026; Filing date: July 6, 2026 (filed late relative to the typical 2-business-day Form 4 window).
• Transaction type/code: Award/Grant (A); reported acquisition price $0.00 (derivative RSUs).
• Units granted: 6,208 RSUs; notional value based on $51.54 lookback FMV ≈ $319,960.
• Vesting: Four equal annual installments starting May 13, 2027 (see footnote F3).
• Shares owned after transaction: not specified in the provided filing text.
• Footnotes: F1 (each RSU = right to one share), F2 (30-day lookback FMV = $51.54), F3 (vesting schedule).
• Timeliness: The Form 4 was filed on July 6, 2026 for a May 13, 2026 grant — the filing appears late under normal Form 4 timing rules.

Context

• This was a compensation award (RSUs), not an open-market purchase or sale. RSU grants are common executive compensation and do not by themselves indicate immediate buying or selling of stock.
• As a 10% owner and CEO, Wang’s award is a company compensation action; the RSUs will only convert to shares as they vest (and may be subject to tax-withholding or other settlement terms not detailed in the excerpt).