ACM Research (ACMR) director David H. Wang sells 100K shares, exercises options under 10b5-1 plan
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
ACM Research, Inc. director and officer David H. Wang reported a mix of open-market sales and option exercises in Class A common stock. On June 3–4, he sold a total of 100,002 shares in multiple open-market transactions, including sales of 1,187 shares at $93.04 and 2,060 shares at $83.86 per share.
Over the same two days, Wang exercised stock options to acquire 100,002 shares of Class A common stock at a $1.00 per share exercise price, with the options fully vested and exercisable. Following these transactions, he holds 842,710 Class A shares directly, along with several indirect positions through family trusts and related accounts. The filing notes that the sales were made under a Rule 10b5-1 trading plan adopted on November 29, 2024, indicating the trades were pre-scheduled rather than discretionary.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 100,002 shares ($8,835,388)
Net Sell
19 txns
Insider
Wang David H
Role
See Remarks
Sold
100,002 shs ($8.84M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option | 40,002 | $0.00 | -- |
| Exercise | Class A Common Stock | 40,002 | $1.00 | $40K |
| Sale | Class A Common Stock | 2,060 | $83.86 | $173K |
| Sale | Class A Common Stock | 17,543 | $85.11 | $1.49M |
| Sale | Class A Common Stock | 10,992 | $86.07 | $946K |
| Sale | Class A Common Stock | 8,581 | $87.13 | $748K |
| Sale | Class A Common Stock | 826 | $87.91 | $73K |
| Exercise | Stock Option | 60,000 | $0.00 | -- |
| Exercise | Class A Common Stock | 60,000 | $1.00 | $60K |
| Sale | Class A Common Stock | 4,300 | $87.57 | $377K |
| Sale | Class A Common Stock | 6,295 | $88.98 | $560K |
| Sale | Class A Common Stock | 32,450 | $89.84 | $2.92M |
| Sale | Class A Common Stock | 9,925 | $90.78 | $901K |
| Sale | Class A Common Stock | 5,843 | $92.38 | $540K |
| Sale | Class A Common Stock | 1,187 | $93.04 | $110K |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
| holding | Class A Common Stock | -- | -- | -- |
Holdings After Transaction:
Stock Option — 270,000 shares (Direct, null);
Class A Common Stock — 842,710 shares (Direct, null);
Class A Common Stock — 100,002 shares (Indirect, By Jing Chen, wife of David H. Wang)
Footnotes (1)
- The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 29, 2024. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.22 to $88.04, 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), (8), (9), (10), (11), and (12) to this Form 4. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $88.24 to $89.22, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $89.24 to $90.22, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $90.24 to $91.22, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $92.01 to $92.8, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $93.02 to $93.39, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $83.61 to $84.24, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $84.62 to $85.6, inclusive. 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 $86.57, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.73 to $87.66, inclusive. The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.77 to $88.01, inclusive. The option is fully vested and exercisable.
Key Figures
Shares sold: 100,002 shares
Shares from option exercises: 100,002 shares
Exercise price: $1.00 per share
+5 more
8 metrics
Shares sold
100,002 shares
Open-market Class A sales on June 3–4, 2026
Shares from option exercises
100,002 shares
Class A shares acquired via option exercise on June 3–4, 2026
Exercise price
$1.00 per share
Stock option conversion into Class A common stock
Direct holdings after transactions
842,710 shares
Class A common stock directly owned following June 4, 2026
Trust holding
620,001 shares
Class A shares held by Wang-Chen Family Living Trust
Additional family trust holding
180,000 shares
Irrevocable trust for Wang children
Sale example price (high)
$93.04 per share
Open-market sale of 1,187 shares on June 3, 2026
Option expiration
December 27, 2026
Expiration date for exercised stock options
Key Terms
Rule 10b5-1 trading plan, weighted average price, Stock Option, derivative security, +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 adopted by the reporting person on November 29, 2024."
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.
Stock Option financial
"security_title: "Stock Option" ... transaction_type: "derivative""
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.
derivative security financial
"transaction_code_description: "Exercise or conversion of derivative security""
A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.
fully vested and exercisable financial
"The option is fully vested and exercisable."
FAQ
What insider transactions did ACMR’s David H. Wang report in this Form 4?
David H. Wang reported open-market sales and option exercises in ACM Research Class A common stock. He sold 100,002 shares and exercised options for 100,002 shares over June 3–4, keeping a large remaining equity position.
What stock options did David H. Wang exercise in ACM Research (ACMR)?
He exercised stock options covering 100,002 shares of ACM Research Class A common stock. The options had a $1.00 per share exercise price and were fully vested and exercisable, converting his derivative holdings into additional common shares.
What indirect holdings of ACM Research (ACMR) are associated with David H. Wang?
The Form 4 lists indirect ownership in Class A shares held by the Wang-Chen Family Living Trust, an irrevocable family trust for the Wang children, Wang’s daughter Sophia Wang, and his wife Jing Chen, each reported as indirect holdings under his name.