Haiping Dun

ACMR

Haiping Dun serves as director at ACM Research, Inc. (ACMR). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

35 trades

$9.51M

Net Position

Net Seller

$9.51M

Companies Traded

ACMR

Active Period

Mar 2022 – May 2026

35 total trades

Most Recent

Sell ACMR

May 21, 2026 · $331.1K

Haiping Dun's Insider Trading at ACM Research, Inc. (ACMR)

Buys

0 · $0.00

Sells

35 · $9.51M

Total Shares Bought

Total Shares Sold

485,001

ACMR Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
May 21, 2026	Sell	5,000	$66.22	$331.1K	3,667
Mar 11, 2026	Sell	5,000	$43.47	$217.4K	900
Mar 14, 2025	Sell	9,518	$29.00	$276.0K	0
Mar 10, 2025	Sell	15,001	$26.54	$398.1K	0
Mar 3, 2025	Sell	482	$25.94	$12.5K	0
Nov 29, 2024	Sell	19,058	$17.43	$332.2K	0
Nov 22, 2024	Sell	15,000	$19.12	$286.8K	0
Nov 14, 2024	Sell	942	$18.59	$17.5K	0
Aug 29, 2024	Sell	19,097	$18.08	$345.3K	0
Aug 22, 2024	Sell	15,000	$19.85	$297.8K	0
Aug 14, 2024	Sell	903	$19.38	$17.5K	0
May 29, 2024	Sell	19,239	$22.63	$435.4K	0
May 22, 2024	Sell	15,000	$22.88	$343.2K	0
May 14, 2024	Sell	761	$23.02	$17.5K	0
Mar 14, 2024	Sell	19,434	$27.70	$538.4K	0
Mar 8, 2024	Sell	15,000	$30.36	$455.4K	0
Mar 1, 2024	Sell	566	$30.92	$17.5K	0
Nov 29, 2023	Sell	18,984	$17.25	$327.5K	0
Nov 22, 2023	Sell	15,000	$17.66	$264.9K	0
Nov 14, 2023	Sell	1,016	$17.23	$17.5K	0
Aug 22, 2023	Sell	32,098	$13.85	$444.6K	0
Jun 1, 2023	Sell	37,500	$10.00	$375.0K	0
May 22, 2023	Sell	1,928	$9.73	$18.8K	0
Mar 16, 2023	Sell	37,500	$12.06	$452.3K	0
Mar 9, 2023	Sell	1,504	$12.47	$18.8K	0
Nov 30, 2022	Sell	35,327	$8.43	$297.8K	0
Nov 22, 2022	Sell	2,173	$8.63	$18.8K	0
Nov 14, 2022	Sell	1,970	$9.52	$18.8K	0
Aug 22, 2022	Sell	36,537	$16.10	$588.2K	0
Aug 15, 2022	Sell	37,482	$19.29	$722.9K	0
Aug 8, 2022	Sell	981	$19.13	$18.8K	0
May 27, 2022	Sell	36,150	$15.00	$542.3K	0
May 18, 2022	Sell	1,350	$13.89	$18.8K	0
Mar 9, 2022	Sell	12,269	$82.09	$1.01M	0
Mar 2, 2022	Sell	231	$81.46	$18.8K	0