ACM Research

ACMR13F as of Jun 30, 2026 · next update ~Nov 14

Who's buying ACMR

Top funds mostly trimmed ACM Research in Q2 (Apr⁠–⁠Jun)

Buying:

FundsInsidersCongress

Top funds
1 of 3 bought more, 2 sold some. Largest: Southeastern Asset Management, $17.7M (1% of its portfolio).
Insiders
No buys, 17 sales in 12 months.
Congress
No trades disclosed in the last 12 months.

3 funds$33.1M held0.3% avg. weightQ2: 1 bought / 2 sold

13F reports are a snapshot as of Jun 30, 2026; funds may have traded since. Insiders often sell for personal reasons (taxes, diversification, planned sales).

Share price · market data, not from 13F reports

Q2 2026

Insider trades (Form 4)

Last 2 years · 40 filings

Date	Insider	Type	Shares	Price	Value
Sep 8, 2026	David H Wang 10% Owner	Sold	140,000	$75.93	$10.63M
Aug 20, 2026	Mark Mckechnie	Sold	55,199	$77.27	$4.26M
Aug 18, 2026	Haiping Dun Director	Sold	5,000	$81.13	$406K
Jun 4, 2026	Sotheara Cheav	Sold	18,750	$84.58	$1.59M
Jun 3, 2026	David H Wang 10% Owner	Sold	100,002	$88.35	$8.84M
May 19, 2026	Haiping Dun Director	Sold	5,000	$66.22	$331K
Apr 17, 2026	Charles C Pappis Director	Sold	5,000	$52.00	$260K
Mar 12, 2026	Mark Mckechnie	Sold	98,551	$45.58	$4.49M
Mar 11, 2026	David H Wang 10% Owner	Sold	110,000	$46.86	$5.15M
Mar 10, 2026	Tracy Liu Director	Sold	60,000	$47.51	$2.85M
Mar 9, 2026	Haiping Dun Director	Sold	5,000	$43.47	$217K
Mar 5, 2026	Charles C Pappis Director	Sold	5,000	$50.09	$250K
Mar 5, 2026	Lisa Feng	Sold	30,000	$48.04	$1.44M
Dec 4, 2025	Mark Mckechnie	Sold	31,250	$34.93	$1.09M
Dec 3, 2025	David H Wang 10% Owner	Sold	130,000	$33.55	$4.36M
Dec 2, 2025	Fuping Chen	Sold	120,000	$33.18	$3.98M
Nov 12, 2025	Lisa Feng	Sold	30,000	$33.27	$998K
Sep 17, 2025	Tracy Liu Director	Sold	15,000	$33.00	$495K
Sep 18, 2025	Jian Wang	Sold	30,000	$35.00	$1.05M
Sep 18, 2025	Sotheara Cheav	Sold	10,000	$35.00	$350K
Sep 3, 2025	David H Wang 10% Owner	Sold	130,000	$26.61	$3.46M
Aug 22, 2025	Sotheara Cheav	Sold	11,152	$30.00	$335K
Aug 22, 2025	Jian Wang	Sold	60,000	$31.00	$1.86M
Jul 15, 2025	Tracy Liu Director	Sold	15,000	$30.00	$450K
Jul 7, 2025	Lisa Feng	Sold	15,000	$28.00	$420K
Jun 24, 2025	Lisa Feng	Sold	15,000	$26.00	$390K
May 21, 2025	David H Wang 10% Owner	Sold	130,000	$23.15	$3.01M
May 14, 2025	Mark Mckechnie	Sold	15,000	$25.22	$378K
Mar 17, 2025	Chenming HU Director	Sold	163,308	$30.00	$4.90M
Mar 14, 2025	Haiping Dun Director	Sold	9,518	$29.00	$276K
Mar 12, 2025	Mark Mckechnie	Sold	15,000	$27.42	$411K
Mar 11, 2025	David H Wang 10% Owner	Sold	131,250	$27.02	$3.55M
Mar 10, 2025	Haiping Dun Director	Sold	15,001	$26.54	$398K
Feb 6, 2025	Sotheara Cheav	Sold	22,598	$23.00	$520K
Feb 6, 2025	Mark Mckechnie	Sold	15,000	$22.00	$330K
Nov 29, 2024	Haiping Dun Director	Sold	19,058	$17.43	$332K
Nov 29, 2024	David H Wang 10% Owner	Sold	56,250	$17.44	$981K
Nov 26, 2024	David H Wang 10% Owner	Sold	56,250	$17.89	$1.01M
Nov 22, 2024	Haiping Dun Director	Sold	15,000	$19.12	$287K
Nov 22, 2024	David H Wang 10% Owner	Sold	56,250	$19.08	$1.07M