Wang David H insider trades
Wang David H has filed 28 Form 4s with the SEC that we hold, all for ACM Research, Inc. (ACMR), as See Remarks, Director, 10% owner. Across all of them we count 0 purchases worth $0 and 57 sales worth $56.3M reported on Form 4. In the last 12 months: 0 purchases ($0) and 29 sales ($29.0M). The largest single trade was a sale of 51,374 shares of ACM Research, Inc. worth $4.0M, dated 2026-09-08. Of 9 sales filed since we began reading the 10b5-1 checkbox, 9 (100%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2023-08-21 and the latest 2026-09-10.
ACM Research, Inc. (ACMR)
See Remarks, Director, 10% owner · 28 filings · 57 purchases and sales
| Trade date | Code | Shares | Value as filed | Filed | Source |
|---|---|---|---|---|---|
| 2023-09-12 | S, sale reported on Form 4 | 86,427 | $1.6M | 2023-09-14 | SEC |
| 2023-09-12 | S, sale reported on Form 4 | 3,573 | $66.9K | 2023-09-14 | SEC |
| 2023-09-13 | S, sale reported on Form 4 | 85,116 | $1.5M | 2023-09-14 | SEC |
| 2023-11-22 | S, sale reported on Form 4 | 45,000 | $795.6K | 2023-11-27 | SEC |
| 2023-11-22 | S, sale reported on Form 4 | 45,000 | $795.2K | 2023-11-27 | SEC |
| 2023-11-29 | S, sale reported on Form 4 | 45,000 | $771.3K | 2023-12-01 | SEC |
| 2023-11-29 | S, sale reported on Form 4 | 39,776 | $681.4K | 2023-12-01 | SEC |
| 2024-03-08 | S, sale reported on Form 4 | 45,000 | $1.4M | 2024-03-12 | SEC |
| 2024-03-08 | S, sale reported on Form 4 | 45,000 | $1.4M | 2024-03-12 | SEC |
| 2024-03-14 | S, sale reported on Form 4 | 10,611 | $301.1K | 2024-03-15 | SEC |
| 2024-03-14 | S, sale reported on Form 4 | 76,478 | $2.1M | 2024-03-15 | SEC |
| 2024-05-22 | S, sale reported on Form 4 | 45,000 | $1.0M | 2024-05-24 | SEC |
| 2024-05-29 | S, sale reported on Form 4 | 45,000 | $1.0M | 2024-05-31 | SEC |
| 2024-05-29 | S, sale reported on Form 4 | 41,090 | $929.5K | 2024-05-31 | SEC |
| 2024-11-22 | S, sale reported on Form 4 | 56,250 | $1.1M | 2024-11-26 | SEC |
| 2024-11-26 | S, sale reported on Form 4 | 9,484 | $173.7K | 2024-11-29 | SEC |
| 2024-11-26 | S, sale reported on Form 4 | 46,766 | $832.4K | 2024-11-29 | SEC |
| 2024-11-29 | S, sale reported on Form 4 | 56,250 | $981.0K | 2024-12-03 | SEC |
| 2025-03-11 | S, sale reported on Form 4 | 56,250 | $1.5M | 2025-03-13 | SEC |
| 2025-03-12 | S, sale reported on Form 4 | 37,500 | $1.0M | 2025-03-13 | SEC |
| 2025-03-13 | S, sale reported on Form 4 | 1,019 | $28.2K | 2025-03-13 | SEC |
| 2025-03-13 | S, sale reported on Form 4 | 36,481 | $995.6K | 2025-03-13 | SEC |
| 2025-05-21 | S, sale reported on Form 4 | 69,992 | $1.7M | 2025-05-23 | SEC |
| 2025-05-21 | S, sale reported on Form 4 | 8 | $192 | 2025-05-23 | SEC |
| 2025-05-22 | S, sale reported on Form 4 | 60,000 | $1.4M | 2025-05-23 | SEC |
| 2025-09-03 | S, sale reported on Form 4 | 3,943 | $107.7K | 2025-09-05 | SEC |
| 2025-09-03 | S, sale reported on Form 4 | 66,057 | $1.8M | 2025-09-05 | SEC |
| 2025-09-04 | S, sale reported on Form 4 | 60,000 | $1.6M | 2025-09-05 | SEC |
| 2025-12-03 | S, sale reported on Form 4 | 68,800 | $2.3M | 2025-12-05 | SEC |
| 2025-12-03 | S, sale reported on Form 4 | 1,200 | $40.3K | 2025-12-05 | SEC |
| 2025-12-04 | S, sale reported on Form 4 | 40,183 | $1.4M | 2025-12-05 | SEC |
| 2025-12-04 | S, sale reported on Form 4 | 19,817 | $664.3K | 2025-12-05 | SEC |
| 2026-03-11 | S, sale reported on Form 4 | 55,373 | $2.7M | 2026-03-13 | SEC |
| 2026-03-11 | S, sale reported on Form 4 | 4,627 | $223.7K | 2026-03-13 | SEC |
| 2026-03-12 | S, sale reported on Form 4 | 702 | $32.7K | 2026-03-13 | SEC |
| 2026-03-12 | S, sale reported on Form 4 | 10,561 | $474.4K | 2026-03-13 | SEC |
| 2026-03-12 | S, sale reported on Form 4 | 38,737 | $1.8M | 2026-03-13 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 1,187 | $110.4K | 2026-06-05 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 4,300 | $376.6K | 2026-06-05 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 6,295 | $560.1K | 2026-06-05 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 32,450 | $2.9M | 2026-06-05 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 9,925 | $901.0K | 2026-06-05 | SEC |
| 2026-06-03 | S, sale reported on Form 4 | 5,843 | $539.8K | 2026-06-05 | SEC |
| 2026-06-04 | S, sale reported on Form 4 | 10,992 | $946.1K | 2026-06-05 | SEC |
| 2026-06-04 | S, sale reported on Form 4 | 17,543 | $1.5M | 2026-06-05 | SEC |
| 2026-06-04 | S, sale reported on Form 4 | 2,060 | $172.8K | 2026-06-05 | SEC |
| 2026-06-04 | S, sale reported on Form 4 | 8,581 | $747.7K | 2026-06-05 | SEC |
| 2026-06-04 | S, sale reported on Form 4 | 826 | $72.6K | 2026-06-05 | SEC |
| 2026-09-08 | S, sale reported on Form 4 | 4,803 | $365.0K | 2026-09-10 | SEC |
| 2026-09-08 | S, sale reported on Form 4 | 51,374 | $4.0M | 2026-09-10 | SEC |
| 2026-09-08 | S, sale reported on Form 4 | 12,323 | $962.2K | 2026-09-10 | SEC |
| 2026-09-08 | S, sale reported on Form 4 | 1,500 | $117.9K | 2026-09-10 | SEC |
| 2026-09-09 | S, sale reported on Form 4 | 33,493 | $2.5M | 2026-09-10 | SEC |
| 2026-09-09 | S, sale reported on Form 4 | 18,934 | $1.4M | 2026-09-10 | SEC |
| 2026-09-09 | S, sale reported on Form 4 | 11,666 | $881.7K | 2026-09-10 | SEC |
| 2026-09-09 | S, sale reported on Form 4 | 4,807 | $368.8K | 2026-09-10 | SEC |
| 2026-09-09 | S, sale reported on Form 4 | 1,100 | $85.3K | 2026-09-10 | SEC |
Source
Counted from the Form 4 filings this reporting owner (SEC CIK 1721580) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
