Welcome to our dedicated page for Ostin Technology Group Co., Ltd. SEC filings (Ticker: OST), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Ostin Technology Group Co., Ltd. filings document foreign private issuer disclosures for a China-based supplier of display modules, polarizers and related display materials. The company’s Form 6-K reports cover board and officer changes, independent-director appointments, committee assignments, shareholder meeting materials and amendments tied to its Class A ordinary share structure.
The filing record also includes registered direct offering disclosures, securities purchase agreements, ordinary shares, warrants, pre-funded warrants and registration-statement references. Additional current reports document Nasdaq communications, regulatory inquiries, a DOJ-related matter involving company personnel, trading-halt disclosure and the formation of an independent board committee to oversee related internal review matters.
Ostin Technology Group Co., Ltd. director CUI RONGGUO filed an initial insider ownership report on Form 3. The filing lists this person as a director but does not report any stock transactions or specific share holdings in the provided data.
Ostin Technology Group Co., Ltd. director and secretary Yin Xiao Hong has reported indirect ownership of 3,850 Class A Ordinary Shares. These shares are held through JQZY, over whose securities she holds voting power, indicating an indirect beneficial stake rather than shares held in her own name.
Ostin Technology Group Co., Ltd. director Mein John Carl filed an initial statement of beneficial ownership on Form 3. This filing does not report any stock purchases, sales, or derivative positions, and serves as the baseline record of his insider status as a director of OST.
Ostin Technology Group Co., Ltd. reported that its Chief Technology Officer, Xiaodong Zhai, has tendered his resignation effective February 28, 2026. The company states that Mr. Zhai is leaving for personal reasons and that his departure does not arise from any disagreement with the company on any matter.
As of this report, Ostin has not yet identified a new CTO, indicating that its technology leadership role remains vacant for now while the company searches for a successor.
Ostin Technology Group Co., Ltd. files its annual 20-F, highlighting that it is a Cayman holding company whose operations and cash flows depend on subsidiaries in China and are constrained by PRC dividend, FX and capital-control rules. The report stresses extensive regulatory risks from China’s evolving cybersecurity, data security and overseas listing regimes, including potential requirements for CSRC and CAC filings that could affect future offshore offerings. It explains exposure to the Holding Foreign Companies Accountable Act, noting reliance on a PCAOB-inspected Singapore auditor but acknowledging delisting risk if inspections become blocked. Ostin outlines restrictions on moving cash out of China, statutory reserve requirements, and internal cash-transfer controls among PRC subsidiaries. The filing also discloses that trading in its Class A Ordinary Shares on Nasdaq has been suspended since September 12, 2025, and warns that delisting or penny‑stock treatment could hurt liquidity and share value.
Ostin Technology Group Co., Ltd. has appointed Mr. Rongguo Cui, age 62, as an independent director, effective December 22, 2025, under a three-year Independent Director Agreement. He will receive US$5,000 per quarter and reimbursement of reasonable business expenses, and is subject to confidentiality, non-compete and clawback provisions.
Mr. Cui will sit on the Audit, Compensation, and Nominating and Corporate Governance Committees, chair the Compensation Committee, and serve on a special committee of independent directors overseeing matters related to a U.S. Department of Justice indictment and related Nasdaq and regulatory inquiries. The Board determined he is independent under Nasdaq rules and the company’s guidelines, with no family relationships or related-party transactions disclosed.
Mr. Cui brings executive and semiconductor industry experience, including leadership roles at PI Semiconductor (Shenzhen), NeuSemi Group, and Semtech Corporation, and holds degrees in marketing and finance, applied linguistics, and English literature.
Ostin Technology Group (OST) reported the resignation of independent director Heung Ming Wong, effective November 10, 2025. The company stated the resignation was for personal reasons and not due to any disagreement on company matters.
The notice was given on November 9, 2025 and disclosed via a Form 6-K.
The Schedule 13G/A discloses that Streeterville Capital LLC, Streeterville Management LLC and John M. Fife are reporting persons for Ostin Technology Group Co., Ltd. regarding the company's Class A ordinary shares. The reporting parties state they beneficially own 0 shares, representing 0.0% of the class, with 0 sole and 0 shared voting and dispositive powers.
The filing includes a certification that the securities were not acquired to change or influence control of the issuer and notes that ownership of 5% or more of the class is not applicable. This disclosure communicates non‑ownership rather than any increase or decrease in holdings.