As of November 6, 2026, Trio-tech International is a publicly traded company (Nasdaq: TRT). The largest holder reporting an active stake on Schedule 13D is Yong Siew Wai, at 16.9%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Founder or officer holdings: Richard M. Horowitz, a director and 10% owner (8.6%) (Schedule 13D/A, January 29, 2026).
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Is Trio-tech International a real, registered company?
- Trio-Tech International files with the SEC under CIK 732026 (its SEC filings).
- Its shares are listed under the ticker TRT on Nasdaq (SEC company record).
- Incorporated in California; business address in Van Nuys, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under TRIO-TECH INTERNATIONAL in our court records and SEC 8-K records (as of 2026-11-06).
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Horowitz Richard M (filed 2026-06-25).
Who are Trio-tech International's owners and officers?
Trio-tech International: incorporated in California; business address in Van Nuys, California; industry Special Industry Machinery, NEC (Schedule 13D/A, 2026-06-25).
| Report | Holder | Share |
|---|---|---|
| Schedule 13D/A, 2026-06-25 | Horowitz Richard M | 8.6% |
| Schedule 13G/A, 2026-05-01 | Zeff Capital, LP | 1.28% |
| Schedule 13D/A, 2026-01-29 | Yong Siew Wai | 16.9% |
| Schedule 13G/A, 2026-01-21 | Zeff Capital, LP | 5.9% |
Questions about who owns Trio-tech International
Who owns Trio-tech International?
On this page, 2 holders' latest ownership filings report 5% or more of Trio-tech International: Yong Siew Wai (16.9%, Schedule 13D/A, filed 2026-01-29) and Horowitz Richard M (8.6%, Schedule 13D/A, filed 2026-06-25).
Who are the largest shareholders of Trio-tech International?
By the share each holder's latest filing reports, the largest holders of Trio-tech International on this page are Yong Siew Wai (16.9%) and Horowitz Richard M (8.6%).
When did Yong Siew Wai buy into Trio-tech International?
The filings give report dates, not purchase dates. The earliest filing from Yong Siew Wai on this page is the Schedule 13D/A, filed 2026-01-29, reporting 16.9%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 4 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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Which insiders own Trio-tech International shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chairman and chief executive: 1,310,247 shares (12.6% of shares outstanding) (Form 4, 2026-09-29).
- , a director and 10% owner: 664,784 shares (6.4% of shares outstanding) (Form 4, 2026-05-27).
- , the chief operating officer and senior corp vice president: 231,268 shares (2.2% of shares outstanding) (Form 4, 2026-04-30).
- , a director: 210,094 shares (2.0% of shares outstanding) (Form 4, 2026-06-23).
- , a director: 131,044 shares (1.3% of shares outstanding) (Form 4, 2026-05-28).
Shares outstanding: 10,384,698 as of 2026-09-01, from the company's latest SEC cover page.
How much has Trio-tech International raised?
No fundraising or offering filing from Trio-tech International is on file with us.
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More on Trio-tech International and the records around it.
Trio-tech International elsewhere on the record
- 5%+ stake filings Jun 2026
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