BlackRock, Inc. 13D and 13G filings for ACM Research, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-10-02 6:46 pm Purchase | 2025-09-30 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 7,420,308 12.600% | 3,591,868 (+93.82%) | Filing |
| 2025-04-17 09:35 am Sale | 2025-03-31 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 3,828,440 6.600% | -613,897 (-13.82%) | Filing |
| 2024-11-08 5:31 pm Unchanged | 2024-09-30 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 4,442,337 7.700% | 0 (Unchanged) | Filing |
| 2024-10-22 3:24 pm Purchase | 2024-09-30 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 4,442,337 7.700% | 716,812 (+19.24%) | Filing |
| 2024-01-26 5:25 pm Purchase | 2023-12-31 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 3,725,525 6.700% | 504,095 (+15.65%) | Filing |
| 2023-02-13 2:57 pm Purchase | 2022-12-31 | 13G | ACM Research, Inc. ACMR | BlackRock Inc. BLK | 3,221,430 5.900% | 3,221,430 (New Position) | Filing |