DUN HAIPING sold 5K shares of ACM RESEARCH, INC. on the open market
Open‑market sale worth $217.4K. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 2 sales
Filed: 3/11/2026ACC: 0001140361-26-009039
-5K
Net shares
Net seller
$217.4K
Total sold
2
Open market trades
0B · 2S
4
Total transactions
5K acquired · 10K disposed
Non-Derivative Transactions3
Class A Common Stock
Direct
Shares
+5K
Price / share
$5.60
Trade value
$28K
% of position
New position
3/9/2026
0.00→5K
Class A Common Stock
Direct
Shares
−4.10K
Price / share
$43.37
Trade value
$177.82K
% of position
82.0%
3/9/2026
5K→900.00
Class A Common Stock
Direct
Shares
−900.00
Price / share
$43.94
Trade value
$39.55K
% of position
New position
3/9/2026
900.00→0.00
Total
Net shares
+0.00
Net value
-$189.36K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Class A Common Stock Direct | 3/9/2026 | M · Option Exercise | +5K | $5.60 | $28K | New position | 0.00 | 5K |
| Class A Common Stock Direct | 3/9/2026 | S · Sale | −4.10K | $43.37 | $177.82K | 82.0% | 5K | 900.00 |
| Class A Common Stock Direct | 3/9/2026 | S · Sale | −900.00 | $43.94 | $39.55K | New position | 900.00 | 0.00 |
| Total | +0.00 | -$189.36K | ||||||
Derivative Transactions1
Stock Option
Direct
Converts to
Class A Common Stock
5K shares
Shares
−5K
Strike price
5.6
Held after
55K
Exercisable
—
3/9/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option Direct | Class A Common Stock5K shares | 3/9/2026 | M · Option Exercise | −5K | 5.6 | — | 55K |
Non-Derivative Holdings (Post-Transaction)2
Class A Common Stock
IndirectShares owned755.09K
Class A Common Stock
IndirectShares owned100K
Total
855.09K indirect855.09K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Class A Common Stock | 755.09K | Indirect |
| Class A Common Stock | 100K | Indirect |
| Total | 855.09K | 855.09K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported