PAPPIS CHARLES C sold 5K shares of ACM RESEARCH, INC. on the open market
Open‑market sale worth $260.0K. Review remaining holdings and any 10b5‑1 plan disclosures.
S · 1 sale
Filed: 4/21/2026ACC: 0001140361-26-015915
-5K
Net shares
Net seller
$260.0K
Total sold
1
Open market trades
0B · 1S
3
Total transactions
5K acquired · 10K disposed
Non-Derivative Transactions2
Class A Common Stock
Direct
Shares
+5K
Price / share
$29.18
Trade value
$145.90K
% of position
New position
4/17/2026
0.00→5K
Class A Common Stock
Direct
Shares
−5K
Price / share
$52.00
Trade value
$260K
% of position
New position
4/17/2026
5K→0.00
Total
Net shares
+0.00
Net value
-$114.10K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Class A Common Stock Direct | 4/17/2026 | M · Option Exercise | +5K | $29.18 | $145.90K | New position | 0.00 | 5K |
| Class A Common Stock Direct | 4/17/2026 | S · Sale | −5K | $52.00 | $260K | New position | 5K | 0.00 |
| Total | +0.00 | -$114.10K | ||||||
Derivative Transactions1
Stock Option
Direct
Converts to
Class A Common Stock
5K shares
Shares
−5K
Strike price
29.18
Held after
0.00
Exercisable
—
4/17/2026
| Security | Converts To | Date | Type | Shares | Strike Price | Exercisable | Held After |
|---|---|---|---|---|---|---|---|
| Stock Option Direct | Class A Common Stock5K shares | 4/17/2026 | M · Option Exercise | −5K | 29.18 | — | 0.00 |