Wang David H

See Remarks, Director, 10% OwnerACM Research, Inc. (ACMR) · full profile →Form 4 · filed Mar 13, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$5.2M
Net Open-Market Flow
-$5.2M
Transactions
9
7 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Mar 12, 2026Sell(S)702$46.57$33K803K
Mar 12, 2026Option exercise(M)50K$1.00$50K853K
Mar 12, 2026Sell(S)11K$44.92$474K842K
Mar 12, 2026Sell(S)39K$45.74$1.8M803K
Mar 11, 2026Option exercise(M)60K$1.00$60K863K
Mar 11, 2026Sell(S)55K$47.89$2.7M807K
Mar 11, 2026Sell(S)5K$48.34$224K803K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Mar 12, 2026Option exercise(M)50K$0370K
Mar 11, 2026Option exercise(M)60K$0420K

Transaction Codes

S
Open-market sale
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001140361-26-009401) within minutes of acceptance. Every field above traces to the original document. Verify it directly: