Research Frontiers Inc SEC filings REFR
Research Frontiers Inc has 904 filings in SEC EDGAR's recent list, going back to Aug 14, 1995. Its latest annual report, Form 10-K, was filed on Mar 5, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Jun 12, 2026 (shareholder vote results). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jan 5, 2026 | Dec 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 17, 2025 | — |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 2, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jun 17, 2024 | Jun 14, 2024 |
| 4 | Insider transaction | Jun 10, 2024 | Jun 7, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 7, 2024 |
| SC 13G | Ownership over 5% (passive) | Jan 24, 2024 | — |
| 4 | Insider transaction | Jan 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 5, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Dec 12, 2023 | Dec 11, 2023 |
| SC 13G | Ownership over 5% (passive) | Oct 19, 2023 | — |
| 4 | Insider transaction | Oct 3, 2023 | Oct 2, 2023 |
| 4 | Insider transaction | Sep 14, 2023 | Sep 13, 2023 |
| 3 | Initial insider ownership | Jul 10, 2023 | Jun 4, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 16, 2023 |
| 4 | Insider transaction | Jun 16, 2023 | Jun 15, 2023 |
| 4 | Insider transaction | Feb 10, 2023 | Feb 9, 2023 |
| 4 | Insider transaction | Jan 26, 2023 | Jan 25, 2023 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 3, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 3, 2022 | Dec 31, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 15, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 2, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2021 | — |
| 4 | Insider transaction | Jan 4, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 4, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 4, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 4, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 4, 2021 | Dec 31, 2020 |
| 3/A | Filing | Jan 4, 2021 | Aug 17, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Aug 27, 2020 | — |
| 4 | Insider transaction | Aug 27, 2020 | Aug 25, 2020 |
| 3 | Initial insider ownership | Aug 18, 2020 | Aug 17, 2020 |
| 4 | Insider transaction | Aug 11, 2020 | Aug 7, 2020 |
| 4 | Insider transaction | Jul 30, 2020 | Jul 28, 2020 |
| 4 | Insider transaction | Jul 21, 2020 | Jul 17, 2020 |
| 4 | Insider transaction | Jul 17, 2020 | Jul 15, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 13, 2020 |
| 4 | Insider transaction | Jul 2, 2020 | Jun 30, 2020 |
| 4 | Insider transaction | Jun 29, 2020 | Jun 25, 2020 |
| 4 | Insider transaction | Jun 29, 2020 | Jun 25, 2020 |
| 4 | Insider transaction | Jun 2, 2020 | May 29, 2020 |
| 4/A | Filing | Apr 29, 2020 | Dec 31, 2019 |
| 4/A | Filing | Apr 29, 2020 | Dec 31, 2019 |
| 4/A | Filing | Apr 29, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Feb 24, 2020 | Feb 21, 2020 |
| 4 | Insider transaction | Feb 24, 2020 | Feb 21, 2020 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| 4 | Insider transaction | Jan 2, 2020 | Dec 31, 2019 |
| SC 13D | Ownership over 5% (active) | Jul 8, 2019 | — |
| 4/A | Filing | Jun 27, 2019 | Jun 25, 2019 |
| 4 | Insider transaction | Jun 27, 2019 | Jun 25, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| 4 | Insider transaction | Jun 17, 2019 | Jun 13, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 5, 2019 | — |
| 4 | Insider transaction | Nov 21, 2018 | Nov 20, 2018 |
| 4 | Insider transaction | Nov 20, 2018 | Nov 19, 2018 |
| 4 | Insider transaction | Nov 19, 2018 | Nov 19, 2018 |
| 4 | Insider transaction | Oct 16, 2018 | Oct 15, 2018 |
| 4 | Insider transaction | Oct 12, 2018 | Oct 11, 2018 |
| 4 | Insider transaction | Oct 12, 2018 | Oct 10, 2018 |
| 4 | Insider transaction | Sep 21, 2018 | Sep 11, 2018 |
| 4 | Insider transaction | Jul 23, 2018 | Jul 19, 2018 |
| 4 | Insider transaction | Jul 17, 2018 | Jul 16, 2018 |
| 4 | Insider transaction | Jul 13, 2018 | Jul 11, 2018 |
| 4 | Insider transaction | Jun 26, 2018 | Jun 25, 2018 |
| 4 | Insider transaction | Jun 7, 2018 | Jun 6, 2018 |
| 4 | Insider transaction | Jun 6, 2018 | Jun 5, 2018 |
| 4 | Insider transaction | Jun 5, 2018 | Jun 4, 2018 |
| 4 | Insider transaction | Jun 4, 2018 | May 31, 2018 |
| 4 | Insider transaction | May 31, 2018 | May 30, 2018 |
| 4 | Insider transaction | May 16, 2018 | May 16, 2018 |
| 4 | Insider transaction | May 16, 2018 | May 16, 2018 |
| 4 | Insider transaction | May 4, 2018 | May 3, 2018 |
| 4 | Insider transaction | May 4, 2018 | May 3, 2018 |
| 4 | Insider transaction | May 4, 2018 | May 3, 2018 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Jan 3, 2018 | Dec 31, 2017 |
| 4 | Insider transaction | Dec 5, 2017 | Dec 1, 2017 |
| 4 | Insider transaction | Sep 13, 2017 | Sep 12, 2017 |
| 4 | Insider transaction | Aug 14, 2017 | Aug 10, 2017 |
| 4 | Insider transaction | Aug 10, 2017 | Aug 7, 2017 |
| 4 | Insider transaction | Aug 8, 2017 | Aug 4, 2017 |
| 4 | Insider transaction | Jul 20, 2017 | Jul 19, 2017 |
| 4 | Insider transaction | Jul 20, 2017 | Jul 19, 2017 |
| 4 | Insider transaction | Mar 21, 2017 | Mar 21, 2017 |
| 4 | Insider transaction | Mar 20, 2017 | Mar 20, 2017 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 3, 2017 | Dec 31, 2016 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Jan 4, 2016 | Dec 31, 2015 |
| 4 | Insider transaction | Sep 21, 2015 | Sep 18, 2015 |
| 4 | Insider transaction | Mar 24, 2015 | Mar 24, 2015 |
| 4 | Insider transaction | Feb 27, 2015 | Feb 26, 2015 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2015 | — |
| 4 | Insider transaction | Jan 22, 2015 | Jan 22, 2015 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Jan 5, 2015 | Dec 31, 2014 |
| 4 | Insider transaction | Sep 23, 2014 | Sep 23, 2014 |
| 4 | Insider transaction | Sep 19, 2014 | Sep 19, 2014 |
| 4 | Insider transaction | Jul 21, 2014 | Jul 18, 2014 |
| 4 | Insider transaction | Jun 19, 2014 | Jun 19, 2014 |
| 4 | Insider transaction | Jun 19, 2014 | Jun 19, 2014 |
| 4 | Insider transaction | Jun 17, 2014 | Jun 16, 2014 |
| 4 | Insider transaction | May 21, 2014 | May 19, 2014 |
| 4 | Insider transaction | May 20, 2014 | May 19, 2014 |
| 4 | Insider transaction | May 19, 2014 | May 16, 2014 |
| 4 | Insider transaction | May 16, 2014 | May 14, 2014 |
| 4 | Insider transaction | May 15, 2014 | May 13, 2014 |
| 4 | Insider transaction | May 15, 2014 | May 15, 2014 |
| 4 | Insider transaction | May 14, 2014 | May 12, 2014 |
| 4 | Insider transaction | May 12, 2014 | May 8, 2014 |
| 4 | Insider transaction | Mar 24, 2014 | Mar 21, 2014 |
| 4 | Insider transaction | Mar 21, 2014 | Mar 20, 2014 |
| 4 | Insider transaction | Jan 6, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 6, 2014 | Jan 3, 2014 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 2, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Dec 19, 2013 | Dec 18, 2013 |
| 4 | Insider transaction | Dec 18, 2013 | Dec 18, 2013 |
| 4 | Insider transaction | Dec 16, 2013 | Dec 13, 2013 |
| 4 | Insider transaction | Dec 5, 2013 | Dec 5, 2013 |
| 4 | Insider transaction | Nov 26, 2013 | Nov 26, 2013 |
| 4 | Insider transaction | Nov 22, 2013 | Nov 22, 2013 |
| 4 | Insider transaction | Nov 22, 2013 | Nov 21, 2013 |
| 4 | Insider transaction | Nov 13, 2013 | Nov 12, 2013 |
| 4 | Insider transaction | Nov 12, 2013 | Nov 11, 2013 |
| SC 13G | Ownership over 5% (passive) | Sep 26, 2013 | — |
| 4 | Insider transaction | Aug 26, 2013 | Aug 23, 2013 |
| 4 | Insider transaction | Aug 26, 2013 | Aug 26, 2013 |
| 4 | Insider transaction | Aug 19, 2013 | Aug 16, 2013 |
| 4 | Insider transaction | Aug 19, 2013 | Aug 16, 2013 |
| 4 | Insider transaction | Aug 13, 2013 | Aug 12, 2013 |
| 4 | Insider transaction | Aug 12, 2013 | Aug 9, 2013 |
| 4 | Insider transaction | Aug 12, 2013 | Aug 9, 2013 |
| 3 | Initial insider ownership | Jun 18, 2013 | Jun 13, 2013 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2013 | — |
| 3 | Initial insider ownership | Feb 11, 2013 | Feb 9, 2013 |
| 4/A | Amendment to statement of changes in beneficial ownership of securities | Jan 7, 2013 | Jan 1, 2013 |
| 4/A | Amendment to statement of changes in beneficial ownership of securities | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
| 4 | Insider transaction | Jan 7, 2013 | Jan 1, 2013 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Patent Owners & Lessors (SIC 6794)
- Listed as
- REFR (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Woodbury, NY
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 793524
Other Patent Owners & Lessors companies
- InterDigital, Inc. IDCC
- Dolby Laboratories, Inc. DLB
- Digital Turbine, Inc. APPS
- Acacia Research Corp ACTG
- JOINT Corp JYNT
- Alpha Modus Holdings, Inc. AMOD
- VirnetX Holding Corp VHC
- NETWORK-1 Technologies, Inc. NTIP
Source: SEC EDGAR filings. This is company-reported data, not investment advice.