Changes in Beneficial Ownership · 4
ACM Research, Inc.
ACMRNASDAQEQUITYCurrent
Changes in Beneficial Ownership
Structured filing — 4
form4.xml
Filing details
- Report period
- 2026-08-12
- Issuer
- ACM Research, Inc.
- Issuer CIK
- 0001680062
- Trading symbol
- ACMR
Reporting owner 1
- Name
- Pappis Charles C
- Reporting owner CIK
- 0001475345
- Relationship
- Director
- Address
- C/O ACM RESEARCH, INC., 42307 OSGOOD ROAD, SUITE I, FREMONT, CA, 94539
Derivative transactions
| Security | Conversion / exercise price (USD) | Transaction date | Code | Amount | A / D | Price (USD) | Exercisable | Expires | Underlying security | Underlying shares | Owned after | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option | 81.26 | 2026-08-12 | A · Form 4 | 6,400 | A | 0 | [F1] | 2036-08-11 | Class A Common Stock | 6,400 | 6,400 | D |
| Restricted Stock Units | 96.13[F2] | 2026-08-12 | A · Form 4 | 728 | A | 0 | [F3] | [F3] | Class A Common Stock | 728 | 728 | D |
Table key
- A · Form 4
- Acquisition by grant, award or otherwise under Rule 16b-3(d)
- A
- Acquired
- D
- Direct
Footnotes
- F1
- The 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.↩ 1
- F2
- The 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.↩ 1
Signature 1
- Signed
- /s/ Mark McKechnie, Attorney-in-Fact for Charles
- Date
- 2026-08-26