Cyanotech Corp SEC filings CYAN
Cyanotech Corp has 870 filings in SEC EDGAR's recent list, going back to Sep 8, 1995. Its latest annual report, Form ARS, was filed on Jul 10, 2025 for the period ended Mar 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 10, 2025, covering the quarter ended Sep 30, 2025. The most recent current report (Form 8-K) was filed on Sep 2, 2025 (material agreement, new debt). The company's fiscal year ends on March 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SC 13E3/A | Amendment no. 2 | Feb 13, 2026 | — |
| SC 13E3/A | Amendment no. 1 | Feb 3, 2026 | — |
| SC 13E3 | Schedule 13e-3 | Jan 9, 2026 | — |
| 4 | Insider transaction | Sep 16, 2025 | Sep 12, 2025 |
| 3 | Initial insider ownership | Sep 12, 2025 | Aug 21, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 28, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 28, 2025 |
| 4 | Insider transaction | Sep 2, 2025 | Aug 28, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jun 18, 2025 | Jun 16, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 3 | Initial insider ownership | May 20, 2025 | May 12, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Apr 9, 2025 | Apr 7, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| 4 | Insider transaction | Feb 20, 2025 | Feb 18, 2025 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 3, 2024 | — |
| 4 | Insider transaction | Oct 3, 2024 | Oct 3, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Sep 27, 2024 |
| 4 | Insider transaction | Sep 27, 2024 | Sep 25, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 23, 2024 | Sep 19, 2024 |
| 4 | Insider transaction | Sep 19, 2024 | Sep 17, 2024 |
| 4 | Insider transaction | Sep 17, 2024 | Sep 13, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 12, 2024 | — |
| 4 | Insider transaction | Sep 11, 2024 | Sep 9, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 5, 2024 |
| 3 | Initial insider ownership | Sep 9, 2024 | Sep 5, 2024 |
| 4 | Insider transaction | Sep 9, 2024 | Sep 5, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 6, 2024 | — |
| 4 | Insider transaction | Sep 5, 2024 | Sep 4, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 4, 2024 |
| 4 | Insider transaction | Sep 5, 2024 | Sep 3, 2024 |
| 4 | Insider transaction | Sep 3, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 29, 2024 | Aug 27, 2024 |
| 4 | Insider transaction | Aug 27, 2024 | Aug 23, 2024 |
| 4 | Insider transaction | Aug 23, 2024 | Aug 21, 2024 |
| 4 | Insider transaction | Aug 21, 2024 | Aug 19, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 15, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 15, 2024 | — |
| 4 | Insider transaction | Aug 15, 2024 | Aug 13, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 9, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 7, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Aug 5, 2024 | Aug 1, 2024 |
| 4 | Insider transaction | Aug 1, 2024 | Jul 30, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 31, 2024 | Jul 29, 2024 |
| 4 | Insider transaction | Jul 30, 2024 | Jul 26, 2024 |
| 4 | Insider transaction | Jul 26, 2024 | Jul 24, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jul 26, 2024 | — |
| 4 | Insider transaction | Jul 24, 2024 | Jul 22, 2024 |
| 4 | Insider transaction | Jul 22, 2024 | Jul 18, 2024 |
| 4 | Insider transaction | Jul 18, 2024 | Jul 16, 2024 |
| 4 | Insider transaction | Jul 16, 2024 | Jul 12, 2024 |
| 4 | Insider transaction | Jul 12, 2024 | Jul 10, 2024 |
| 4 | Insider transaction | Jul 10, 2024 | Jul 8, 2024 |
| 4 | Insider transaction | Jul 8, 2024 | Jul 3, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Apr 10, 2024 | Apr 8, 2024 |
| 4 | Insider transaction | Feb 27, 2024 | Feb 26, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| 4 | Insider transaction | Feb 21, 2024 | Feb 16, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 20, 2023 | — |
| 4 | Insider transaction | Dec 19, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 4, 2023 | Dec 1, 2023 |
| 4 | Insider transaction | Oct 17, 2023 | Oct 13, 2023 |
| 4 | Insider transaction | Sep 18, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Sep 14, 2023 | Sep 12, 2023 |
| 4 | Insider transaction | Sep 14, 2023 | Sep 13, 2023 |
| 4 | Insider transaction | Sep 12, 2023 | Sep 11, 2023 |
| 4 | Insider transaction | Sep 8, 2023 | Sep 7, 2023 |
| 4 | Insider transaction | Sep 7, 2023 | Sep 5, 2023 |
| 3 | Initial insider ownership | Sep 1, 2023 | Aug 24, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 30, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 29, 2023 | — |
| SC 13D | Ownership over 5% (active) | Aug 29, 2023 | — |
| 4 | Insider transaction | Aug 28, 2023 | Aug 25, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 25, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 25, 2023 |
| 4 | Insider transaction | Aug 28, 2023 | Aug 24, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Aug 1, 2023 | Jul 31, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 10, 2023 | Apr 6, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Apr 4, 2023 | Apr 3, 2023 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 30, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Aug 2, 2022 | Jul 29, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 21, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Apr 8, 2022 | Apr 6, 2022 |
| 4 | Insider transaction | Dec 1, 2021 | Nov 30, 2021 |
| 3 | Initial insider ownership | Nov 16, 2021 | Nov 8, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Oct 20, 2021 | Oct 18, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Jul 30, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Jul 30, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Jul 30, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Jul 30, 2021 |
| 4 | Insider transaction | Aug 3, 2021 | Jul 30, 2021 |
| 3 | Initial insider ownership | Jul 30, 2021 | Jul 20, 2021 |
| 4 | Insider transaction | Jul 15, 2021 | Jul 13, 2021 |
| 4 | Insider transaction | Jul 15, 2021 | Jul 13, 2021 |
| 4 | Insider transaction | Jul 15, 2021 | Jul 13, 2021 |
| 4 | Insider transaction | Jul 15, 2021 | Jul 13, 2021 |
| 4 | Insider transaction | Jul 15, 2021 | Jul 13, 2021 |
| 4 | Insider transaction | May 25, 2021 | May 20, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 6, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 6, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 6, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 6, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 6, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Apr 2, 2021 | — |
| 4 | Insider transaction | Mar 18, 2021 | Mar 16, 2021 |
| 4 | Insider transaction | Mar 16, 2021 | Mar 12, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 10, 2021 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 2, 2020 | — |
| 4 | Insider transaction | Nov 25, 2020 | Nov 23, 2020 |
| 4 | Insider transaction | Nov 25, 2020 | Nov 23, 2020 |
| 3 | Initial insider ownership | Oct 21, 2020 | Sep 28, 2020 |
| 4 | Insider transaction | Sep 11, 2020 | Sep 9, 2020 |
| 4 | Insider transaction | Sep 9, 2020 | Sep 4, 2020 |
| 4 | Insider transaction | Sep 4, 2020 | Sep 2, 2020 |
| 4 | Insider transaction | Sep 2, 2020 | Aug 31, 2020 |
| 4 | Insider transaction | Aug 31, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 31, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 31, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 31, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 31, 2020 | Aug 27, 2020 |
| 4 | Insider transaction | Aug 12, 2020 | Jul 7, 2020 |
| 4 | Insider transaction | Aug 12, 2020 | Jul 7, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Aug 3, 2020 | Jul 30, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 13, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 13, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 13, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 13, 2020 |
| 4 | Insider transaction | Jul 15, 2020 | Jul 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
- Medicinal Chemicals & Botanical Products (SIC 2833)
- Listed as
- CYAN (OTC)
- Fiscal year ends
- March 31
- Incorporated in
- NV
- Headquarters
- Kailua Kona, HI
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 768408
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.