Reporting Owner Activity for Charles C. Pappis

Form 3/4/5 issuer positions and transaction evidence for this reporting owner.

Linked issuers

1

Largest position

ACM Research, Inc.

Disclosed value

—

Transaction activity

Available

Identity 1 identity field
Location
Santa Clara, CA
SEC source record 1 source field
Latest reporting-owner signature
/s/ Mark McKechnie, Attorney-in-Fact for Charles Pappis
Source evidence 1 source field
SEC filing history
Open SEC filing history

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Reported issuer positions for Charles C. Pappis

ACMR Forms 3/4/5

ACM Research, Inc.

Relationship
Director
Holdings value
$0
Past year net change
-$510,450
Change %
-100%
Report period
17 Apr 2026

Recent insider transactions for Charles C. Pappis

Sym Company Class Transaction % SEC-reported value SEC-reported price Shares Shares after Date Ownership
* marks a reported price that did not pass the local price check.
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