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 |
|---|---|---|---|
| 15-12G | Deregistration | Feb 13, 2026 | — |
| 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 | — |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 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 |
| 8-K |
Current report
Material agreement, New debt
|
Sep 2, 2025 | Aug 29, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Aug 22, 2025 | Aug 21, 2025 |
| 10-Q | Quarterly report | Aug 6, 2025 | Jun 30, 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 |
| ARS | Annual report to shareholders | Jul 10, 2025 | Mar 31, 2025 |
| DEF 14A | Proxy statement | Jul 10, 2025 | Aug 21, 2025 |
| 10-K | Annual report | Jun 20, 2025 | Mar 31, 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 |
| 8-K |
Current report
Material agreement, New debt, Officer or director change
|
May 8, 2025 | May 2, 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 |
| 10-Q | Quarterly report | Feb 11, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Auditor change
|
Dec 16, 2024 | Dec 10, 2024 |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 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 |
| 8-K |
Current report
Officer or director change, Shareholder vote results, Other events
|
Aug 23, 2024 | Aug 22, 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 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 13, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 13, 2024 | Aug 9, 2024 |
| 4 | Insider transaction | Aug 9, 2024 | Aug 7, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 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 |
| ARS | Annual report to shareholders | Jul 11, 2024 | Mar 31, 2024 |
| DEF 14A | Proxy statement | Jul 11, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Jul 10, 2024 | Jul 8, 2024 |
| 4 | Insider transaction | Jul 8, 2024 | Jul 3, 2024 |
| PRE 14A | Preliminary proxy statement | Jun 28, 2024 | Aug 22, 2024 |
| 10-K | Annual report | Jun 26, 2024 | Mar 31, 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 |
| 25-NSE | Delisting notice | Apr 9, 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 |
| 8-K |
Current report
Listing notice
|
Feb 14, 2024 | Feb 8, 2024 |
| 10-Q | Quarterly report | Feb 8, 2024 | Dec 31, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 20, 2023 | — |
| 4 | Insider transaction | Dec 19, 2023 | Dec 15, 2023 |
| 8-K |
Current report
Unregistered share sale
|
Dec 19, 2023 | Dec 15, 2023 |
| 4 | Insider transaction | Dec 4, 2023 | Dec 1, 2023 |
| 10-Q | Quarterly report | Nov 8, 2023 | Sep 30, 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 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
Aug 29, 2023 | Aug 24, 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 |
| 8-K |
Current report
Material agreement, New debt
|
Aug 17, 2023 | Aug 14, 2023 |
| 8-K |
Current report
Listing notice
|
Aug 11, 2023 | Aug 10, 2023 |
| 10-Q | Quarterly report | Aug 11, 2023 | Jun 30, 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 |
| ARS | Annual report to shareholders | Jul 14, 2023 | Mar 31, 2023 |
| DEF 14A | Proxy statement | Jul 14, 2023 | Aug 24, 2023 |
| 8-K |
Current report
Other events
|
Jul 5, 2023 | Jun 30, 2023 |
| 10-K | Annual report | Jun 27, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Other events
|
Jun 16, 2023 | Jun 15, 2023 |
| 8-K |
Current report
Listing notice
|
May 8, 2023 | May 2, 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 |
| 10-Q | Quarterly report | Feb 9, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 19, 2022 | Dec 14, 2022 |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 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 | Sep 1, 2022 | Aug 30, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Aug 30, 2022 | Aug 25, 2022 |
| 10-Q | Quarterly report | Aug 10, 2022 | Jun 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 |
| DEF 14A | Proxy statement | Jul 18, 2022 | Aug 25, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 21, 2022 |
| 10-K | Annual report | Jun 22, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Jun 22, 2022 | Jun 16, 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 |
| 10-Q | Quarterly report | Feb 10, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Dec 1, 2021 | Nov 30, 2021 |
| 3 | Initial insider ownership | Nov 16, 2021 | Nov 8, 2021 |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Officer or director change
|
Nov 10, 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 |
| 8-K |
Current report
Shareholder vote results
|
Aug 31, 2021 | Aug 26, 2021 |
| 10-Q | Quarterly report | Aug 11, 2021 | Jun 30, 2021 |
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.