ACM Research CFO sells 55K shares after option exercise
Sentiment and the balance of points
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Form Type
4
Rhea-AI Filing Summary
ACM Research, Inc. (ACMR) reported that Chief Financial Officer and Treasurer Mark McKechnie exercised stock options for a total of 55,199 shares of Class A Common Stock on August 20, 2026, at exercise prices of $19.49 and $13.89 per share, from fully vested options. He then sold 55,199 shares in three transactions at weighted-average prices of $76.34, $77.45, and $77.89 per share, with the sales effected pursuant to a Rule 10b5-1 trading plan adopted on May 21, 2026.
Insider Trade Summary 10b5-1
Exercise and Sale: 55,199 shares ($3.33M approx. pre-tax spread)
Exercise and Sale
7 txns
Insider
McKechnie Mark
Role
See Remarks
Sold
55,199 shs ($4.26M)
Approx. gross sale proceeds
$4.26M
Approx. exercise cost
$936K
Approx. pre-tax spread
$3.33M
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option F5 | 30,199 | $0.00 | $0.00 |
| Exercise | Stock Option F5 | 25,000 | $0.00 | $0.00 |
| Exercise | Class A Common Stock | 30,199 | $19.49 | $589K |
| Exercise | Class A Common Stock | 25,000 | $13.89 | $347K |
| Sale | Class A Common Stock F1, F2 | 13,625 | $76.34 | $1.04M |
| Sale | Class A Common Stock F1, F3 | 30,365 | $77.45 | $2.35M |
| Sale | Class A Common Stock F1, F4 | 11,209 | $77.89 | $873K |
Holdings After Transaction:
Stock Option — 246,250 contracts (Direct);
Class A Common Stock — 900 shares (Direct)
Footnotes (5)
- F1. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 21, 2026.
- F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.76 to $76.68, 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), and (4) 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 $76.81 to $77.79, inclusive.
- F4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $77.84 to $78.4, inclusive.
- F5. The option is fully vested and exercisable.
Key Figures
Options exercised at $19.49: 30,199 shares at $19.49 per share
Options exercised at $13.89: 25,000 shares at $13.89 per share
Total shares acquired via exercise: 55,199 shares
+5 more
8 metrics
Options exercised at $19.49
30,199 shares at $19.49 per share
Stock options for Class A Common Stock exercised on August 20, 2026; expiration August 11, 2032
Options exercised at $13.89
25,000 shares at $13.89 per share
Stock options for Class A Common Stock exercised on August 20, 2026; expiration August 9, 2033
Total shares acquired via exercise
55,199 shares
Class A Common Stock received from option exercises on August 20, 2026
Sale at weighted-average $76.34
13,625 shares at $76.34 per share
Class A Common Stock sale; price is a weighted-average over $75.76–$76.68
Sale at weighted-average $77.45
30,365 shares at $77.45 per share
Class A Common Stock sale; price is a weighted-average over $76.81–$77.79
Sale at weighted-average $77.89
11,209 shares at $77.89 per share
Class A Common Stock sale; price is a weighted-average over $77.84–$78.40
Total shares sold
55,199 shares
Aggregate Class A Common Stock sold on August 20, 2026
Rule 10b5-1 plan adoption date
May 21, 2026
Date the reporting person adopted the trading plan governing the reported sales
Key Terms
Rule 10b5-1 trading plan, weighted average price, Class A Common Stock, Stock Option, +1 more
5 terms
Rule 10b5-1 trading plan regulatory
"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
Class A Common Stock financial
"underlying_security_title: "Class A Common Stock""
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.
Stock Option financial
"security_title: "Stock Option""
A stock option is a contract that gives you the right to buy or sell a company's stock at a specific price within a certain time frame. People use them to potentially make money if the stock's price moves favorably or to protect against losses. It's like holding a coupon that can be used to buy or sell stock at a set price later on.
fully vested and exercisable financial
"The option is fully vested and exercisable."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What insider transactions did ACMR’s CFO report on August 20, 2026?
ACMR’s CFO Mark McKechnie exercised options for 55,199 shares of Class A Common Stock and sold 55,199 shares on August 20, 2026. The options had exercise prices of $19.49 and $13.89 per share.
What option grants did the ACMR CFO exercise in this Form 4?
He exercised fully vested stock options covering 30,199 shares at an exercise price of $19.49 per share (expiring August 11, 2032) and 25,000 shares at an exercise price of $13.89 per share (expiring August 9, 2033).
AI-generated analysis. How Rhea-AI works. Not financial advice.
