Ostin Technology Group Co., Ltd. SEC filings OST
Ostin Technology Group Co., Ltd. has 134 filings in SEC EDGAR's recent list, going back to Sep 28, 2020. Its latest annual report, Form 20-F, was filed on Jan 26, 2026 for the period ended Sep 30, 2025. The most recent current report (Form 6-K) was filed on Jun 18, 2026. The company's fiscal year ends on September 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 3 | Initial insider ownership | Apr 2, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 2, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 2, 2026 | Mar 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 15, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 30, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 25, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 25, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 13, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 29, 2025 | — |
| 144 | Notice of proposed sale | Mar 4, 2025 | — |
| 144 | Notice of proposed sale | Oct 11, 2024 | — |
| 144 | Notice of proposed sale | Oct 11, 2024 | — |
| 144 | Notice of proposed sale | May 24, 2024 | — |
| 144 | Notice of proposed sale | May 24, 2024 | — |
| SC 13D | Ownership over 5% (active) | Feb 20, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2024 | — |
| 144 | Notice of proposed sale | Nov 20, 2023 | — |
Showing 30 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Electronic Components, NEC (SIC 3679)
- Listed as
- OST (Nasdaq)
- Fiscal year ends
- September 30
- Incorporated in
- Cayman Islands
- Headquarters
- Nanjiang Jiangsu, China
- SEC filer status
- Non-accelerated filer, Emerging growth company
- SEC CIK
- 1803407
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.