Wang David H Insider Trading Activity

Corporate InsiderSee Remarks · CIK 1721580

Total trades

$13.0M

Total volume

Mar 12, 2026

Last activity

ACMR

ACM Research, Inc.

Wang David H has been net-selling over the last 12 months with 0 purchases and 12 sales across 1 company.

ACMR is the most-traded position with 12 trades. The largest single transaction was a sale of ACMR for $2.7M on Mar 11, 2026.

Performance Scorecard

Forward stock performance after each transaction by Wang David H. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.

PERIOD	AVG BUY RETURN	AVG SELL AVOIDED	SUCCESS RATE	TRADES
30 days	—	-27.1%	8%	12
90 days	—	-54.1%	0%	12
120 days	—	-75.6%	0%	12

Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.

Price & Trades

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ACMR · ACM Research, Inc.

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Recent Trades

DATE	TICKER	TYPE	SHARES	PRICE	VALUE	Δ OWNED	ROLE
Mar 12, 2026	ACMR	Sell	38,737	$45.74	$1.8M	−4.6%	See Remarks
Mar 12, 2026	ACMR	Sell	10,561	$44.92	$474K	−1.2%	See Remarks
Mar 12, 2026	ACMR	Sell	702	$46.57	$33K	−0.1%	See Remarks
Mar 11, 2026	ACMR	Sell	55,373	$47.89	$2.7M	−6.4%	See Remarks
Mar 11, 2026	ACMR	Sell	4,627	$48.34	$224K	−0.6%	See Remarks
Dec 4, 2025	ACMR	Sell	19,817	$33.52	$664K	−2.3%	See Remarks
Dec 4, 2025	ACMR	Sell	40,183	$34.42	$1.4M	−4.8%	See Remarks
Dec 3, 2025	ACMR	Sell	1,200	$33.56	$40K	−0.1%	See Remarks
Dec 3, 2025	ACMR	Sell	68,800	$33.05	$2.3M	−7.9%	See Remarks
Sep 4, 2025	ACMR	Sell	60,000	$26.44	$1.6M	−8.2%	See Remarks
Sep 3, 2025	ACMR	Sell	66,057	$26.73	$1.8M	−8.9%	See Remarks
Sep 3, 2025	ACMR	Sell	3,943	$27.31	$108K	−0.6%	See Remarks