Dun Haiping: insider trades.
Dun Haiping reported 4 non-derivative transactions on 2 SEC ownership filings in Q3 2026: 0 open-market purchases and 3 sales ($406K), across 1 company.
- Transactions
- 4
- Purchases (P)
- 0
- Sales (S)
- 3
- Companies
- 1
- Name as filed
- Dun Haiping
Companies
| Company | Relationship | Transactions |
|---|---|---|
| ACM Research, Inc. (ACMR) | Director | 4 |
Transactions
| Date | Company | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-18 | ACM Research, Inc. | S | 3,400 | $81.31 | 400 | Form 4 |
| 2026-08-18 | ACM Research, Inc. | S | 1,200 | $80.29 | 3,800 | Form 4 |
| 2026-08-18 | ACM Research, Inc. | M | 5,000 | $5.6 | 5,000 | Form 4 |
| 2026-08-18 | ACM Research, Inc. | S | 400 | $82.17 | 0 | Form 4 |
Questions
What stock did Dun Haiping buy or sell?
Dun Haiping reported 4 non-derivative transactions on 2 SEC ownership filings in Q3 2026: 0 open-market purchases and 3 sales ($406K), across 1 company.
Is Dun Haiping the same person as other filers with this name?
This page covers SEC CIK 1721581 only. The SEC assigns each reporting owner a CIK, and people with the same name have different CIKs.
Source: SEC Insider Transactions Data Sets, Q3 2026. Reported as filed; we do not assess intent, performance or compliance. All filings for this CIK on SEC.gov.
Plain-text version for agents and LLMs: /insiders/dun-haiping-1721581.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.