SEC Form 4 · accession 0001140361-26-034528
ACM Research, Inc. · ACMR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Charles C Pappis
Director
Period of report
Aug 12, 2026
Accepted (ET)
Aug 26, 2026 · 9:30 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001680062
Table I — non-derivative securities
No Table I lines on this filing.
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock OptionF1 | $81.26 | Aug 12, 2026 | A | 6,400 | A | — | Aug 11, 2036 | Class A Common Stock | 6,400 | 6,400 | D |
| Restricted Stock UnitsF2,F3 | $96.13 | Aug 12, 2026 | A | 728 | A | — | — | Class A Common Stock | 728 | 728 | D |
Explanation of responses
- F1The option will vest and become exercisable immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date.
- F2The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day.
- F3The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service.