Cheav Sotheara 4
4 · ACM Research, Inc. · Filed Jun 5, 2026
Research Summary
AI-generated summary of this filing
ACM Research (ACMR) SVP Cheav Sotheara Exercises Options, Sells 18.8k Shares
What Happened
Cheav Sotheara, Senior Vice President, Manufacturing (ACM Research (Shanghai) subsidiary), exercised a total of 18,750 options (fully vested) at $13.89 per share on June 4–5, 2026 (cost ≈ $260,437) and sold the resulting 18,750 shares in multiple open‑market transactions the same days for aggregate proceeds of about $1,585,922. The sales were executed pursuant to a Rule 10b5‑1 trading plan adopted March 5, 2026.
Key Details
- Exercise dates and amounts: 13,351 shares exercised on 2026-06-04 ($185,445) and 5,399 shares exercised on 2026-06-05 ($74,992). (Options fully vested — F9.)
- Sales: 18,750 shares sold across 6/4–6/5 at weighted‑average prices reported; total proceeds ≈ $1,585,922. Reported sale price ranges across transactions: roughly $81.22–$86.19 (see footnotes F2–F8 for per‑range details).
- Plan/footnotes: Sales effected under a 10b5‑1 plan (F1). Several sale line items use weighted‑average prices; the filer will provide per‑trade price breakdown on request (F2–F8).
- Shares owned after transaction: Not disclosed in the provided filing excerpt.
- Timeliness: Report filed 2026-06-05 for transactions reported 2026-06-04–06-05 (filed timely).
Context
This was an option exercise followed by immediate open‑market sales (a common cashless outcome when executives exercise vested options). The use of a 10b5‑1 plan means the sales were pre‑arranged and typically not ad hoc. Such transactions realize gains for the insider but, by themselves, do not necessarily indicate a change in the insider’s view of the company.
Insider Transaction Report
- Exercise/Conversion
Class A Common Stock
2026-06-04$13.89/sh+13,351$185,445→ 113,353 total - Sale
Class A Common Stock
[F1][F2]2026-06-04$84.08/sh−1,300$109,304→ 112,053 total - Sale
Class A Common Stock
[F1][F3]2026-06-04$85.11/sh−9,212$784,033→ 102,841 total - Sale
Class A Common Stock
[F1][F4]2026-06-04$85.77/sh−2,839$243,501→ 100,002 total - Exercise/Conversion
Class A Common Stock
2026-06-05$13.89/sh+5,399$74,992→ 105,401 total - Sale
Class A Common Stock
[F1][F5]2026-06-05$81.73/sh−2,384$194,844→ 103,017 total - Sale
Class A Common Stock
[F1][F6]2026-06-05$82.61/sh−968$79,966→ 102,049 total - Sale
Class A Common Stock
[F1][F7]2026-06-05$84.01/sh−400$33,604→ 101,649 total - Sale
Class A Common Stock
[F1][F8]2026-06-05$85.41/sh−1,647$140,670→ 100,002 total - Exercise/Conversion
Stock Option
[F9]2026-06-04−13,351→ 42,899 totalExercise: $13.89Exp: 2033-08-09→ Class A Common Stock (13,351 underlying) - Exercise/Conversion
Stock Option
[F9]2026-06-05−5,399→ 37,500 totalExercise: $13.89Exp: 2033-08-09→ Class A Common Stock (5,399 underlying)
Footnotes (9)
- [F1]The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 5, 2026.
- [F2]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.61 to $84.4, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2), (3), (4), (5), (6), (7), and (8) to this Form 4.
- [F3]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $84.63 to $85.6, inclusive.
- [F4]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.7 to $86.19, inclusive.
- [F5]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $81.22 to $82.07, inclusive.
- [F6]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $82.38 to $82.89, inclusive.
- [F7]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $83.85 to $84.5, inclusive.
- [F8]The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.27 to $85.72, inclusive.
- [F9]The option is fully vested and exercisable.