One Stop Systems, Inc. SEC filings OSS
One Stop Systems, Inc. has 527 filings in SEC EDGAR's recent list, going back to Mar 19, 2007. Its latest annual report, Form 10-K, was filed on Mar 18, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 28, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (material agreement). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 9, 2026 | — |
| 4 | Insider transaction | Sep 4, 2026 | Aug 7, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Aug 7, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 31, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 29, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 24, 2026 | — |
| 4 | Insider transaction | Jun 12, 2026 | Jun 5, 2026 |
| 4 | Insider transaction | May 28, 2026 | May 11, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 21, 2025 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 26, 2026 | May 20, 2026 |
| 144 | Notice of proposed sale | May 26, 2026 | — |
| 144 | Notice of proposed sale | May 26, 2026 | — |
| 144 | Notice of proposed sale | May 26, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2026 | — |
| 4/A | Filing | Mar 27, 2026 | May 21, 2025 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 7, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 7, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 7, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 4 | Insider transaction | Feb 11, 2026 | Feb 7, 2026 |
| 4 | Insider transaction | Feb 11, 2026 | Feb 7, 2026 |
| 4 | Insider transaction | Jan 12, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 7, 2026 | Dec 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 18, 2025 | — |
| 4 | Insider transaction | Sep 2, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Aug 25, 2025 | Aug 20, 2025 |
| 3 | Initial insider ownership | Jul 18, 2025 | May 14, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 6, 2025 | — |
| 4 | Insider transaction | May 28, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 27, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 13, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 18, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 21, 2025 | — |
| 4 | Insider transaction | Mar 13, 2025 | Feb 20, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Feb 7, 2025 |
| 4 | Insider transaction | Feb 24, 2025 | Feb 7, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 14, 2025 | — |
| 4 | Insider transaction | Dec 30, 2024 | Dec 5, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 11, 2024 |
| 3 | Initial insider ownership | Nov 12, 2024 | Nov 11, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 20, 2024 |
| 4 | Insider transaction | Aug 15, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Jul 11, 2024 | Jul 9, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 3, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | May 28, 2024 | May 23, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 25, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Mar 25, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 5 | Annual insider ownership | Feb 13, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Feb 7, 2024 | Feb 5, 2024 |
| 4 | Insider transaction | Jan 30, 2024 | Jan 29, 2024 |
| 4 | Insider transaction | Jan 24, 2024 | Jan 22, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 4, 2024 | — |
| 3 | Initial insider ownership | Dec 1, 2023 | Nov 27, 2023 |
| 4 | Insider transaction | Nov 21, 2023 | Nov 21, 2023 |
| 4 | Insider transaction | Nov 21, 2023 | Nov 21, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 3 | Initial insider ownership | Nov 20, 2023 | Nov 10, 2023 |
| SC 13D | Ownership over 5% (active) | Nov 3, 2023 | — |
| 3 | Initial insider ownership | Oct 10, 2023 | Sep 30, 2023 |
| 4 | Insider transaction | Aug 22, 2023 | Aug 18, 2023 |
| 4 | Insider transaction | Aug 18, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 18, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 18, 2023 | Aug 16, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 14, 2023 |
| 4 | Insider transaction | Aug 15, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Jun 28, 2023 | Jun 26, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4/A | Form 4/a submission | Jun 21, 2023 | Feb 8, 2023 |
| 4 | Insider transaction | Jun 21, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 6, 2023 | Jun 5, 2023 |
| 3 | Initial insider ownership | Jun 6, 2023 | Jun 5, 2023 |
| 4 | Insider transaction | May 24, 2023 | May 22, 2023 |
| 4 | Insider transaction | May 24, 2023 | May 22, 2023 |
| 4 | Insider transaction | Apr 25, 2023 | Apr 21, 2013 |
| 4 | Insider transaction | Mar 20, 2023 | Mar 16, 2023 |
| 4 | Insider transaction | Mar 20, 2023 | Mar 16, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| 4 | Insider transaction | Feb 14, 2023 | Feb 10, 2023 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2023 | — |
| 4 | Insider transaction | Feb 10, 2023 | Feb 8, 2023 |
| 4 | Insider transaction | Feb 10, 2023 | Feb 8, 2023 |
| 4 | Insider transaction | Feb 10, 2023 | Feb 8, 2023 |
| 4 | Insider transaction | Feb 7, 2023 | Feb 3, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2023 | — |
| 4 | Insider transaction | Jan 6, 2023 | Jan 4, 2023 |
| 4 | Insider transaction | Dec 20, 2022 | Dec 20, 2022 |
| 4 | Insider transaction | Nov 23, 2022 | Nov 22, 2022 |
| 4 | Insider transaction | Nov 23, 2022 | Nov 22, 2022 |
| 4 | Insider transaction | Nov 14, 2022 | Nov 9, 2022 |
| 4 | Insider transaction | Nov 14, 2022 | Nov 9, 2022 |
| 4 | Insider transaction | Oct 6, 2022 | Oct 4, 2022 |
| 4 | Insider transaction | Oct 6, 2022 | Oct 4, 2022 |
| 4 | Insider transaction | Aug 26, 2022 | Aug 25, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 1, 2022 | Jul 28, 2022 |
| 4 | Insider transaction | Jul 27, 2022 | Jul 22, 2022 |
| 4 | Insider transaction | Jul 22, 2022 | Jul 20, 2021 |
| 4 | Insider transaction | Jun 30, 2022 | Jun 29, 2022 |
| 4 | Insider transaction | Jun 3, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | May 25, 2022 | May 23, 2022 |
| 4 | Insider transaction | May 25, 2022 | May 23, 2022 |
| 4 | Insider transaction | May 19, 2022 | May 17, 2022 |
| 4 | Insider transaction | May 19, 2022 | May 17, 2022 |
| 4 | Insider transaction | Apr 11, 2022 | Apr 8, 2022 |
| 4 | Insider transaction | Mar 31, 2022 | Mar 29, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Mar 21, 2022 | Mar 17, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 14, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Feb 14, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| 4 | Insider transaction | Feb 11, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 11, 2022 | Feb 11, 2022 |
| 4 | Insider transaction | Feb 7, 2022 | Feb 3, 2022 |
| 4 | Insider transaction | Feb 7, 2022 | Feb 3, 2022 |
| 4 | Insider transaction | Jan 10, 2022 | Jan 6, 2022 |
| 4 | Insider transaction | Jan 10, 2022 | Jan 6, 2022 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Dec 23, 2021 | Dec 23, 2021 |
| 4 | Insider transaction | Nov 26, 2021 | Nov 23, 2021 |
| 4 | Insider transaction | Nov 24, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 22, 2021 | Nov 22, 2021 |
| 4 | Insider transaction | Nov 15, 2021 | Nov 12, 2021 |
| 4 | Insider transaction | Nov 15, 2021 | Nov 12, 2021 |
| 4 | Insider transaction | Nov 4, 2021 | Nov 2, 2021 |
| 4 | Insider transaction | Sep 29, 2021 | Sep 27, 2021 |
| 4 | Insider transaction | Sep 13, 2021 | Sep 10, 2021 |
| 4 | Insider transaction | Sep 9, 2021 | Sep 7, 2021 |
| 4 | Insider transaction | Sep 7, 2021 | Sep 2, 2021 |
| 4 | Insider transaction | Aug 30, 2021 | Aug 27, 2021 |
| 4 | Insider transaction | Aug 19, 2021 | Aug 18, 2021 |
| 4 | Insider transaction | Aug 19, 2021 | Aug 18, 2021 |
| 4 | Insider transaction | Aug 16, 2021 | Aug 10, 2021 |
| 4 | Insider transaction | Aug 16, 2021 | Aug 10, 2021 |
| 4 | Insider transaction | Aug 11, 2021 | Aug 6, 2021 |
| 4 | Insider transaction | Jul 26, 2021 | Jul 22, 2021 |
| 4 | Insider transaction | Jul 12, 2021 | Jul 9, 2021 |
| 4 | Insider transaction | Jun 30, 2021 | Jun 29, 2021 |
| 4 | Insider transaction | Jun 22, 2021 | Jun 18, 2021 |
| 4 | Insider transaction | Jun 22, 2021 | Jun 18, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | May 18, 2021 | Apr 11, 2021 |
| 4 | Insider transaction | Apr 1, 2021 | Mar 30, 2021 |
| 4 | Insider transaction | Mar 31, 2021 | Mar 31, 2021 |
| 4 | Insider transaction | Mar 31, 2021 | Mar 30, 2021 |
| SC 13G | Ownership over 5% (passive) | Mar 11, 2021 | — |
| 4 | Insider transaction | Feb 24, 2021 | Feb 22, 2021 |
| 4 | Insider transaction | Feb 24, 2021 | Feb 22, 2021 |
| 4 | Insider transaction | Feb 24, 2021 | Feb 22, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 11, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| 4 | Insider transaction | Feb 11, 2021 | Feb 8, 2021 |
| 4 | Insider transaction | Jan 19, 2021 | Jan 14, 2021 |
| 4 | Insider transaction | Jan 7, 2021 | Jan 5, 2021 |
| 4 | Insider transaction | Dec 9, 2020 | Dec 4, 2020 |
| 4 | Insider transaction | Nov 24, 2020 | Nov 24, 2020 |
| 4 | Insider transaction | Nov 18, 2020 | Nov 18, 2020 |
| 4 | Insider transaction | Nov 17, 2020 | Nov 13, 2020 |
| 4 | Insider transaction | Nov 17, 2020 | Nov 13, 2020 |
Showing 200 filings, the most recent 200. 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 Computers (SIC 3571)
- Listed as
- OSS (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- Escondido, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1394056
- Former names
- ONE STOP SYSTEMS INC (until Jul 2, 2018)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.