David H. Wang - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
David H. Wang has filed 2 SEC Form 4 filings across 1 company in the last 90 days - selling. Lifetime open-market sales: $24.87M.
Profile
David H. Wang is a corporate insider at ACM Research, Inc. (ACMR). Wang has reported 12 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | Chief Executive Officer, President and Director |
|---|---|
| Notability | 20/100 |
Board memberships
- ACM Research, Inc.
Trading Pattern
InsiderAlpha's records for David H. Wang go back to 2024: 12 primary Form 4 filings, an average of 4.0 per year. 36 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Career & Filing History
Every role David H. Wang has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- Insider at ACM Research, Inc. (ACMR) - 12 filings, 2024 to 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 826 | $87.91 | $73K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 8.6K | $87.13 | $748K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 11.0K | $86.07 | $946K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 17.5K | $85.11 | $1.49M |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 2.1K | $83.86 | $173K |
| 2026-06-05 | ACMR | ACM Research, Inc. | M - Option exercise [10b5-1] | 40.0K | $1.00 | $40K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 1.2K | $93.04 | $110K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 5.8K | $92.38 | $540K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 9.9K | $90.78 | $901K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 32.5K | $89.84 | $2.92M |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 6.3K | $88.98 | $560K |
| 2026-06-05 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 4.3K | $87.57 | $377K |
| 2026-06-05 | ACMR | ACM Research, Inc. | M - Option exercise [10b5-1] | 60.0K | $1.00 | $60K |
| 2026-03-13 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 702 | $46.57 | $33K |
| 2026-03-13 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 38.7K | $45.74 | $1.77M |
| 2026-03-13 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 10.6K | $44.92 | $474K |
| 2026-03-13 | ACMR | ACM Research, Inc. | M - Option exercise [10b5-1] | 50.0K | $1.00 | $50K |
| 2026-03-13 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 4.6K | $48.34 | $224K |
| 2026-03-13 | ACMR | ACM Research, Inc. | S - Open-market sale [10b5-1] | 55.4K | $47.89 | $2.65M |
| 2026-03-13 | ACMR | ACM Research, Inc. | M - Option exercise [10b5-1] | 60.0K | $1.00 | $60K |
Companies - Last 90 Days
- ACM Research, Inc. (ACMR) - 2 filings, last 2026-07-07
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies David H. Wang has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Mark McKechnie - $4.49M of ACMR open-market activity in the last 12 months
- Fuping Chen - $3.98M of ACMR open-market activity in the last 12 months
- Tracy Liu - $3.35M of ACMR open-market activity in the last 12 months
- Jian Wang - $2.91M of ACMR open-market activity in the last 12 months
- Lisa Feng - $2.44M of ACMR open-market activity in the last 12 months
- Sotheara Cheav - $2.27M of ACMR open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Charles A. Davis
- Deep Track Biotechnology Master Fund, Ltd.
- Robert E. Dixon
- Romeo R. Dizon
- Kevin Michael Donahue
- DONEGAL MUTUAL INSURANCE CO
- DORCHESTER MINERALS OPERATING LP
- Robert W. Duggan
Frequently Asked Questions
Who is David H. Wang?
David H. Wang is a corporate insider at ACM Research, Inc. (ACMR). Wang has reported 12 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has David H. Wang submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has David H. Wang been buying or selling stock?
Recorded transactions: 0 open-market purchases and 27 open-market sales ($24.87M) across all tracked filings.
Where can I see all of David H. Wang's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live David H. Wang profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.