ACM RESEARCH, INC.
ACM RESEARCH, INC. is a registered legal entity registered in United States under 2065793, and its current status with California Secretary of State — bizfile Online is inactive. The company was incorporated on 8 January 1998 and lists its registered address as United States. 4 shareholders are on record for ACM RESEARCH, INC., including at least one natural person recorded as a direct holder; the filing carries no beneficial-ownership flag, so that holder is noted here as a recorded shareholder rather than a confirmed ultimate beneficial owner (UBO). This profile is sourced directly from California Secretary of State — bizfile Online and was last updated on 16 September 2026.
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Shareholders
4
Shareholders of ACM RESEARCH, INC.
Four shareholders are currently on record for ACM RESEARCH, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 14.1% — the largest recorded stake — followed by VANGUARD WORLD FUND-Vanguard Information Technology Index Fund at 3.7%; the remaining 2 shareholders shown hold smaller stakes. 3 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 1 is recorded as direct individual holder, though the record carries no UBO/PSC flag confirming beneficial-owner status.
| Shareholder | Type | Holding | Source Document |
|---|---|---|---|
| Vanguard Group Inc | 14.1% | California Secretary of State — bizfile Online | |
| VANGUARD WORLD FUND-Vanguard Information Technology Index Fund | 3.7% | California Secretary of State — bizfile Online | |
| Morgan Stanley | 2.5% | California Secretary of State — bizfile Online | |
| Fidelity Salem Street Trust-Fidelity Small Cap Index Fund | 1.4% | California Secretary of State — bizfile Online |
Officers
14
Directors and officers of ACM RESEARCH, INC.
The Founder, Chairman, Ceo & President of ACM RESEARCH, INC. currently on record is Hui Wang Ph.d.; 14 officers are currently on record for ACM RESEARCH, INC., filed with California Secretary of State — bizfile Online. Management authority at ACM RESEARCH, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control. The source filing doesn't specify representation authority — whether officers can act individually or must sign jointly to bind the company — so that detail isn't available here.
Data availability
The register reports 16 officers in total, including past appointments, though only the 14 most relevant records are shown here.
Group Structure
Group structure of ACM RESEARCH, INC.
ACM RESEARCH, INC. has no recorded parent company — it sits at the top of its own group structure, with 7 subsidiaries recorded beneath it across 5 jurisdictions. Each of these downward relationships is derived rather than filed: resolved by matching entities across the registry network, not stated directly in a single document.
- Shengmei Semiconductor Equipment (chengdu) Co., Ltd (China)
- Yushengweiyouyi Microelectronics (shanghai) Co., Ltd. (China)
- Acm Research (ca), Inc. (United States)
- ACM RESEARCH (SINGAPORE) PTE. LTD. (Singapore)
- Shengyi Microelectronics (shanghai) Co., Ltd (China)
- HANGUK ACM Co,.Ltd. (South Korea)
- CLEANCHIP TECHNOLOGIES LIMITED (Hong Kong)
Data availability
Those 7 subsidiaries span United States, China, Singapore, South Korea, Hong Kong jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 7 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
ACM RESEARCH, INC.
United States
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Frequently Asked Questions
Who owns ACM RESEARCH, INC.?
Four shareholders are currently on record for ACM RESEARCH, INC., reflecting the stock ledger maintained under state corporate law (e.g. §219 of the Delaware General Corporation Law) rather than a public filing. The largest of these is Vanguard Group Inc, holding 14.1% — the largest recorded stake — followed by VANGUARD WORLD FUND-Vanguard Information Technology Index Fund at 3.7%; the remaining 2 shareholders shown hold smaller stakes. 3 shareholders shown are companies, so the ownership chain continues above this level for those holdings; the other 1 is recorded as direct individual holder, though the record carries no UBO/PSC flag confirming beneficial-owner status.
Who is ACM RESEARCH, INC.'s UBO (Ultimate Beneficial Owner)?
At least one shareholder recorded for ACM RESEARCH, INC. is a natural person. The record carries no dedicated UBO/PSC flag, so that holder is stated here as a recorded shareholder rather than a confirmed Ultimate Beneficial Owner (UBO).
How many shareholders does ACM RESEARCH, INC. have on record?
4 shareholders are shown on record for ACM RESEARCH, INC..
What is ACM RESEARCH, INC.'s company registration number?
ACM RESEARCH, INC.'s registration number is 2065793, filed with California Secretary of State — bizfile Online in United States. Its current status on the register is inactive.
Is ACM RESEARCH, INC. still an active company?
ACM RESEARCH, INC.'s status on California Secretary of State — bizfile Online is listed as inactive, not currently active.
When was ACM RESEARCH, INC. incorporated?
ACM RESEARCH, INC. was incorporated on 8 January 1998, according to California Secretary of State — bizfile Online.
What is ACM RESEARCH, INC.'s registered address?
The registered address on file for ACM RESEARCH, INC. is United States.
Who are the officers/directors of ACM RESEARCH, INC.?
The Founder, Chairman, Ceo & President of ACM RESEARCH, INC. currently on record is Hui Wang Ph.d.; 14 officers are currently on record for ACM RESEARCH, INC., filed with California Secretary of State — bizfile Online. Management authority at ACM RESEARCH, INC. sits with these individuals, not with shareholders, who are covered separately and hold ownership rather than control.
Does ACM RESEARCH, INC. have a parent company or subsidiaries?
ACM RESEARCH, INC. has no recorded parent company — it sits at the top of its own group structure, with 7 subsidiaries recorded beneath it across 5 jurisdictions. Those 7 subsidiaries span United States, China, Singapore, South Korea, Hong Kong jurisdictions, though this list should not be read as complete — subsidiaries only become visible here where shareholder data has actually been filed with a register, so holdings in jurisdictions without that filing simply won't appear. One of the 7 go a level deeper still, with its own further subsidiaries recorded beneath it — additional ownership layers this view doesn't expand.
Can Zavia monitor changes to ACM RESEARCH, INC.'s ownership over time?
This profile reflects a point-in-time snapshot from California Secretary of State — bizfile Online. Zavia's monitoring API can track changes to ACM RESEARCH, INC.'s registered shareholders, officers, and group structure going forward, flagging updates as they're filed rather than requiring a manual recheck.
Can I access ACM RESEARCH, INC.'s data through an API?
Yes. Zavia's API connects directly to official government ownership registries across 195 countries and territories, including United States, so records like ACM RESEARCH, INC.'s registration, shareholder, UBO, and group-structure data can be queried programmatically instead of viewed one page at a time.
Where does this company information come from, and how current is it?
This record is sourced directly from California Secretary of State — bizfile Online and was last synced on 16 September 2026.