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Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (32 ops.)
Latest filing published 10 Sept 2026 for ACM Research, Inc., €60k. Read the official filing
Filing timeline
BuySaleDavid H. Wang
Insider track record
Disclosed buys
0
Disclosed sells
32
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
David H. Wang: trading record in brief
David H. Wang discloses dealings in ACM Research, Inc. to SEC (Form 4). Over a trading history stretching from 4 September 2023 to 9 September 2026, the count stands at 48 filings.
On the market, this insider has only sold: 32 sales, €30.1M in total. Outside the open market, there are 1 share grant and 15 option exercises. 2026 to date brings no purchases and 20 sales.
On 10 September 2026 came the latest disclosure, an option exercise for €60k in ACM Research, Inc. Between a trade and the moment it shows up on SEC (Form 4), the median delay is 2 days. US insiders must file a Form 4 within two business days of a trade. A sale on its own says little: insiders also sell to pay tax, fund a purchase or diversify. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.
Companies and markets linked to David H. Wang
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations48 total
70,000 shares@ US$1.00Class A Common StockSEC:0001140361-26-036191:0
4,803 shares@ US$75.99Class A Common StockSEC:0001140361-26-036191:1
51,374 shares@ US$77.15Class A Common StockSEC:0001140361-26-036191:2
12,323 shares@ US$78.08Class A Common StockSEC:0001140361-26-036191:3
1,500 shares@ US$78.57Class A Common StockSEC:0001140361-26-036191:4
70,000 shares@ US$1.00Class A Common StockSEC:0001140361-26-036191:5
33,493 shares@ US$73.80Class A Common StockSEC:0001140361-26-036191:6
18,934 shares@ US$74.67Class A Common StockSEC:0001140361-26-036191:7
11,666 shares@ US$75.58Class A Common StockSEC:0001140361-26-036191:8
4,807 shares@ US$76.73Class A Common StockSEC:0001140361-26-036191:9
1,100 shares@ US$77.59Class A Common StockSEC:0001140361-26-036191:10
60,000 shares@ US$1.000.0010% mcap0.2% of flowClass A Common StockSEC:0001140361-26-024280:0
4,300 shares@ US$87.570.0064% mcap1.5% of flowClass A Common StockSEC:0001140361-26-024280:1
6,295 shares@ US$88.980.0096% mcap2.2% of flowClass A Common StockSEC:0001140361-26-024280:2
5,843 shares@ US$92.380.0092% mcap2.1% of flowClass A Common StockSEC:0001140361-26-024280:5
1,187 shares@ US$93.040.0019% mcap0.4% of flowClass A Common StockSEC:0001140361-26-024280:6
40,002 shares@ US$1.000.0007% mcap0.2% of flowClass A Common StockSEC:0001140361-26-024280:7
2,060 shares@ US$83.860.0030% mcap0.7% of flowClass A Common StockSEC:0001140361-26-024280:8
10,992 shares@ US$86.070.016% mcap3.7% of flowClass A Common StockSEC:0001140361-26-024280:10
8,581 shares@ US$87.130.013% mcap2.9% of flowClass A Common StockSEC:0001140361-26-024280:11
826 shares@ US$87.910.0012% mcap0.3% of flowClass A Common StockSEC:0001140361-26-024280:12
32,450 shares@ US$89.840.050% mcap11.3% of flowClass A Common StockSEC:0001140361-26-024280:3
9,925 shares@ US$90.780.015% mcap3.5% of flowClass A Common StockSEC:0001140361-26-024280:4
17,543 shares@ US$85.110.026% mcap5.8% of flowClass A Common StockSEC:0001140361-26-024280:9
60,000 shares@ US$1.000.0012% mcap15.0% of flowClass A Common StockSEC:0001140361-26-009401:0
25 of 48 declarations
