Aldeyra Therapeutics, Inc. SEC filings ALDX
Aldeyra Therapeutics, Inc. has 647 filings in SEC EDGAR's recent list, going back to Oct 6, 2005. Its latest annual report, Form ARS, was filed on Apr 27, 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 Sep 29, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 27, 2026 | — |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 11, 2026 | Jun 9, 2026 |
| 3 | Initial insider ownership | Jun 11, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 5, 2026 | Jun 3, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 4 | Insider transaction | Mar 31, 2026 | Mar 27, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4 | Insider transaction | Mar 20, 2026 | Mar 19, 2026 |
| 4 | Insider transaction | Mar 19, 2026 | Mar 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 4 | Insider transaction | Aug 15, 2025 | Aug 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 13, 2025 | Aug 11, 2025 |
| 144 | Notice of proposed sale | Aug 12, 2025 | — |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 12, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Apr 18, 2025 | Apr 17, 2025 |
| 3 | Initial insider ownership | Apr 18, 2025 | Apr 17, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 7, 2025 | — |
| 4 | Insider transaction | Apr 7, 2025 | Apr 3, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 4, 2025 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| 4 | Insider transaction | Oct 21, 2024 | May 3, 2021 |
| 3 | Initial insider ownership | Sep 10, 2024 | Aug 31, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 4 | Insider transaction | Aug 14, 2024 | Aug 12, 2024 |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 144 | Notice of proposed sale | Aug 12, 2024 | — |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4 | Insider transaction | Jun 6, 2024 | Jun 4, 2024 |
| 4/A | Filing | Apr 17, 2024 | Mar 12, 2024 |
| 4/A | Filing | Apr 17, 2024 | Mar 11, 2024 |
| 4 | Insider transaction | Apr 8, 2024 | Apr 4, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 9, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 9, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 9, 2024 |
| 144 | Notice of proposed sale | Mar 12, 2024 | — |
| 144 | Notice of proposed sale | Mar 11, 2024 | — |
| 144 | Notice of proposed sale | Mar 11, 2024 | — |
| 144 | Notice of proposed sale | Mar 11, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jan 29, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 19, 2023 | — |
| 4 | Insider transaction | Oct 18, 2023 | Oct 16, 2023 |
| SC 13G | Ownership over 5% (passive) | Oct 4, 2023 | — |
| 4 | Insider transaction | Sep 11, 2023 | Sep 7, 2023 |
| 4 | Insider transaction | Sep 11, 2023 | Sep 7, 2023 |
| 4 | Insider transaction | Aug 24, 2023 | Aug 22, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jul 5, 2023 | Jun 30, 2023 |
| 4 | Insider transaction | Jun 29, 2023 | Jun 27, 2023 |
| 4 | Insider transaction | Mar 2, 2023 | Feb 28, 2023 |
| 4 | Insider transaction | Mar 2, 2023 | Feb 28, 2023 |
| 4 | Insider transaction | Mar 2, 2023 | Feb 28, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2023 | — |
| 4 | Insider transaction | Aug 11, 2022 | Aug 9, 2022 |
| 4 | Insider transaction | Aug 10, 2022 | Aug 8, 2022 |
| 4 | Insider transaction | Aug 9, 2022 | Aug 5, 2022 |
| 4 | Insider transaction | Aug 8, 2022 | Aug 4, 2022 |
| 4 | Insider transaction | Aug 5, 2022 | Aug 3, 2022 |
| 4 | Insider transaction | Aug 4, 2022 | Aug 2, 2022 |
| 4 | Insider transaction | Aug 3, 2022 | Aug 1, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 1, 2022 | Jul 28, 2022 |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| 4 | Insider transaction | Jul 19, 2022 | Jul 15, 2022 |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2022 | — |
| 4 | Insider transaction | Jun 27, 2022 | Jun 23, 2022 |
| 4 | Insider transaction | Jun 27, 2022 | Jun 23, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 4 | Insider transaction | Jun 9, 2022 | Jun 7, 2022 |
| 3 | Initial insider ownership | May 13, 2022 | May 10, 2022 |
| 4 | Insider transaction | Apr 1, 2022 | Mar 30, 2022 |
| 4 | Insider transaction | Apr 1, 2022 | Mar 30, 2022 |
| 4 | Insider transaction | Apr 1, 2022 | Mar 30, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 4, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 4, 2022 | — |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | Jun 10, 2021 | Jun 8, 2021 |
| 4 | Insider transaction | May 4, 2021 | May 3, 2021 |
| 4 | Insider transaction | Apr 14, 2021 | Apr 12, 2021 |
| 4 | Insider transaction | Apr 14, 2021 | Apr 12, 2021 |
| 4 | Insider transaction | Apr 14, 2021 | Apr 12, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| 4 | Insider transaction | Jan 21, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 11, 2021 | Jan 7, 2021 |
| 3 | Initial insider ownership | Dec 18, 2020 | Dec 8, 2020 |
| 4 | Insider transaction | Jul 13, 2020 | Jul 9, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 13, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jul 10, 2020 | — |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Jun 11, 2020 | Jun 9, 2020 |
| 4 | Insider transaction | Mar 17, 2020 | Mar 16, 2020 |
| 4/A | Form 4/a submission | Mar 6, 2020 | Mar 2, 2020 |
| 4/A | Form 4/a submission | Mar 6, 2020 | Mar 2, 2020 |
| 4 | Insider transaction | Mar 4, 2020 | Mar 2, 2020 |
| 4 | Insider transaction | Mar 4, 2020 | Mar 2, 2020 |
| 4 | Insider transaction | Mar 4, 2020 | Mar 2, 2020 |
| SC 13G | Ownership over 5% (passive) | Feb 25, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 7, 2020 | — |
| 4 | Insider transaction | Jan 15, 2020 | Jan 13, 2020 |
| 3 | Initial insider ownership | Jan 15, 2020 | Jan 13, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 10, 2020 | — |
| 4 | Insider transaction | Dec 18, 2019 | Dec 16, 2019 |
| 4 | Insider transaction | Oct 2, 2019 | Sep 30, 2019 |
| SC 13G | Ownership over 5% (passive) | Sep 27, 2019 | — |
| 4 | Insider transaction | Sep 25, 2019 | Sep 23, 2019 |
| 4 | Insider transaction | Sep 20, 2019 | Sep 18, 2019 |
| 4 | Insider transaction | Sep 19, 2019 | Sep 17, 2019 |
| 4/A | Form 4/a submission | Sep 17, 2019 | Sep 13, 2019 |
| 4 | Insider transaction | Sep 17, 2019 | Sep 13, 2019 |
| 4 | Insider transaction | Sep 17, 2019 | Sep 13, 2019 |
| 4 | Insider transaction | Sep 16, 2019 | Sep 12, 2019 |
| 4 | Insider transaction | Sep 13, 2019 | Sep 11, 2019 |
| 4 | Insider transaction | Sep 11, 2019 | Sep 9, 2019 |
| 4 | Insider transaction | Sep 11, 2019 | Sep 9, 2019 |
| 4 | Insider transaction | Sep 10, 2019 | Sep 6, 2019 |
| 4 | Insider transaction | Sep 9, 2019 | Sep 5, 2019 |
| 4 | Insider transaction | Sep 9, 2019 | Sep 5, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Jun 6, 2019 | Jun 4, 2019 |
| 4 | Insider transaction | Mar 28, 2019 | Mar 26, 2019 |
| 4 | Insider transaction | Mar 7, 2019 | Mar 5, 2019 |
| 4 | Insider transaction | Mar 7, 2019 | Mar 5, 2019 |
| 4 | Insider transaction | Mar 7, 2019 | Mar 5, 2019 |
| 4 | Insider transaction | Mar 7, 2019 | Mar 5, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 22, 2019 | — |
| 4 | Insider transaction | Aug 1, 2018 | Jul 30, 2018 |
| 3 | Initial insider ownership | Aug 1, 2018 | Jul 30, 2018 |
| 3 | Initial insider ownership | Aug 1, 2018 | Jul 30, 2018 |
| 4 | Insider transaction | Jun 11, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Jun 8, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Jun 8, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Jun 8, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Jun 8, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Jun 8, 2018 | Jun 7, 2018 |
| 4 | Insider transaction | Mar 8, 2018 | Mar 6, 2018 |
| 4 | Insider transaction | Mar 8, 2018 | Mar 6, 2018 |
| 4 | Insider transaction | Mar 8, 2018 | Mar 6, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2018 | — |
| SC 13G | Ownership over 5% (passive) | Jan 22, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 10, 2017 | — |
| 4 | Insider transaction | Sep 21, 2017 | Sep 19, 2017 |
| 4 | Insider transaction | Jul 5, 2017 | Jun 30, 2017 |
| 4 | Insider transaction | Jun 12, 2017 | Jun 8, 2017 |
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
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ALDX (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Concord, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1341235
- Former names
- Aldexa Therapeutics, Inc. (until Mar 4, 2014); Neuron Systems Inc (until Aug 1, 2008)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.