Pappis Charles C
SEC insider (Form 3/4/5 filer). CIK 0001475345. Director at ACM Research, Inc. (ACMR). 8 reported Form 4/5 transactions since Sep 2024; latest on Aug 12, 2026. Located in FREMONT, CA.
Companies Pappis Charles C has filed insider reports for
- ACM Research, Inc. (ACMR): Director
Pappis Charles C
CIK: 0001475345
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
ACM Research, Inc.
Discretionary Trading P&L
Holdings
Transaction History (8 total)
- Aug 12, 2026ACMR
ACM Research, Inc.
AwardDirectRestricted Stock Units
728 shares- - Aug 12, 2026ACMR
ACM Research, Inc.
AwardDirectStock Option
6.4K shares- - Apr 17, 2026ACMR
ACM Research, Inc.
ExerciseDirect5K shares at avg. $29.18$146K - Apr 17, 2026ACMR
ACM Research, Inc.
SaleDirect5K shares at avg. $52.00$260K - Mar 5, 2026ACMR
ACM Research, Inc.
ExerciseDirect5K shares at avg. $29.18$146K - Mar 5, 2026ACMR
ACM Research, Inc.
SaleDirect5K shares at avg. $50.09$250K - Aug 12, 2025ACMR
ACM Research, Inc.
AwardDirectStock Option
20K shares- - Mar 15, 2025ACMR
ACM Research, Inc.
AwardDirectStock Option
10K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 12, 2026 | ACMR ACM Research, Inc. | Award Restricted Stock Units | 728 | - | - | Direct |
| Aug 12, 2026 | ACMR ACM Research, Inc. | Award Stock Option | 6,400 | - | - | Direct |
| Apr 17, 2026 | ACMR ACM Research, Inc. | Exercise | 5,000 | $29.18 | $145,900 | Direct |
| Apr 17, 2026 | ACMR ACM Research, Inc. | Sale | 5,000 | $52.00 | $260,000 | Direct |
| Mar 5, 2026 | ACMR ACM Research, Inc. | Exercise | 5,000 | $29.18 | $145,900 | Direct |
| Mar 5, 2026 | ACMR ACM Research, Inc. | Sale | 5,000 | $50.09 | $250,450 | Direct |
| Aug 12, 2025 | ACMR ACM Research, Inc. | Award Stock Option | 20,000 | - | - | Direct |
| Mar 15, 2025 | ACMR ACM Research, Inc. | Award Stock Option | 10,000 | - | - | Direct |
1-8 of 8 transactions