CYAN insider transaction filings
CYANOTECH CORP — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2025-09-16. Screen CYAN transaction legs live →
Insider transaction summary — last 90 days
No Form 4 filings for CYAN between 2026-06-24 and 2026-09-22. The table below lists the most recent filings on record.
Recent Form 4 filings — CYANOTECH CORP
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2025-09-16 | 4 | Miyashiro Jennifer A.S. — CFO, VP Fin & Admin, Treasurer | Grant/award (A): 50,000 (derivative) @ $0 | EDGAR |
| 2025-09-02 | 4 | Vied David L — Director | Grant/award (A): 50,000 @ $0 | EDGAR |
| 2025-09-02 | 4 | MULDER DAVID M — Director | Grant/award (A): 50,000 @ $0 | EDGAR |
| 2025-09-02 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Grant/award (A): 50,000 @ $0 | EDGAR |
| 2025-07-31 | 4 | Custer Matthew Keith — President and CEO, Director | Option exercise (M): 2,075 @ $0 · Option exercise (M): 2,075 (derivative) @ $0 | EDGAR |
| 2025-07-31 | 4 | Nordin Amy Beth — VP, HR, Secretary | Option exercise (M): 1,502 @ $0 · Tax withholding (F): 525 @ $0.41 · Option exercise (M): 1,502 (derivative) @ $0 | EDGAR |
| 2025-07-31 | 4 | Johansen Jennifer M. — VP, Quality, Regulatory & Govt | Option exercise (M): 1,380 @ $0 · Tax withholding (F): 518 @ $0.41 · Option exercise (M): 1,380 (derivative) @ $0 | EDGAR |
| 2025-07-31 | 4 | Jensen Glenn — VP, Operations | Option exercise (M): 1,642 @ $0 · Tax withholding (F): 617 @ $0.41 · Option exercise (M): 1,642 (derivative) @ $0 | EDGAR |
| 2025-07-31 | 4 | Cysewski Gerald R | Option exercise (M): 1,577 @ $0 · Tax withholding (F): 592 @ $0.41 · Option exercise (M): 1,577 (derivative) @ $0 | EDGAR |
| 2025-06-18 | 4 | Custer Matthew Keith — President and CEO, Director | Grant/award (A): 150,000 (derivative) @ $0 · Grant/award (A): 64,103 (derivative) @ $0 | EDGAR |
| 2025-05-21 | 4 | Brand Jennifer Kimberly — VP of Sales | Grant/award (A): 50,000 (derivative) @ $0 | EDGAR |
| 2025-05-21 | 4 | Nordin Amy Beth — VP, HR, Secretary | Grant/award (A): 75,000 (derivative) @ $0 | EDGAR |
| 2025-05-21 | 4 | Jensen Glenn — VP, Operations | Grant/award (A): 25,000 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Kakuk Collette Nicole — Chief Strategic Comml Officer | Option exercise (M): 33 @ $0 · Tax withholding (F): 14 @ $0.31 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Custer Matthew Keith — President and CEO, Director | Option exercise (M): 33 @ $0 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Nordin Amy Beth — VP, HR, Secretary | Option exercise (M): 33 @ $0 · Tax withholding (F): 12 @ $0.31 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Johansen Jennifer M. — VP, Quality, Regulatory & Govt | Option exercise (M): 33 @ $0 · Tax withholding (F): 13 @ $0.31 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Jensen Glenn — VP, Operations | Option exercise (M): 33 @ $0 · Tax withholding (F): 13 @ $0.31 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-04-09 | 4 | Cysewski Gerald R | Option exercise (M): 33 @ $0 · Tax withholding (F): 13 @ $0.31 · Option exercise (M): 33 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Kakuk Collette Nicole — Chief Strategic Comml Officer | Option exercise (M): 3,900 @ $0 · Tax withholding (F): 1,556 @ $0.40 · Option exercise (M): 3,900 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Nordin Amy Beth — VP, HR, Secretary | Option exercise (M): 3,400 @ $0 · Tax withholding (F): 1,189 @ $0.40 · Option exercise (M): 3,400 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Johansen Jennifer M. — VP, Quality, Regulatory & Govt | Option exercise (M): 3,200 @ $0 · Tax withholding (F): 1,201 @ $0.40 · Option exercise (M): 3,200 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Jensen Glenn — VP, Operations | Option exercise (M): 3,570 @ $0 · Tax withholding (F): 1,340 @ $0.40 · Option exercise (M): 3,570 (derivative) @ $0 | EDGAR |
| 2025-02-20 | 4 | Cysewski Gerald R | Option exercise (M): 3,900 @ $0 · Tax withholding (F): 1,464 @ $0.40 · Option exercise (M): 3,900 (derivative) @ $0 | EDGAR |
| 2024-10-03 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.76 · Grant/award (A): 13,158 @ $0.76 | EDGAR |
| 2024-10-01 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.77 · Purchase (P): 5,000 @ $0.76 | EDGAR |
| 2024-09-27 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.77 · Purchase (P): 5,000 @ $0.77 | EDGAR |
| 2024-09-25 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.77 · Purchase (P): 5,000 @ $0.73 | EDGAR |
| 2024-09-23 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.74 · Purchase (P): 5,000 @ $0.77 | EDGAR |
| 2024-09-19 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 4,000 @ $0.74 · Purchase (P): 1,000 @ $0.72 · Purchase (P): 5,000 @ $0.78 | EDGAR |
| 2024-09-17 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.82 · Purchase (P): 5,000 @ $0.82 | EDGAR |
| 2024-09-13 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.83 · Purchase (P): 5,000 @ $0.83 | EDGAR |
| 2024-09-11 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.84 · Purchase (P): 5,000 @ $0.83 · Grant/award (A): 66,667 @ $0.75 | EDGAR |
| 2024-09-09 | 4 | Rogerson Jennifer Charlene — CFO,VP Fin & Admin, Treasurer | Grant/award (A): 50,000 (derivative) @ $0 | EDGAR |
| 2024-09-09 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.84 · Purchase (P): 5,000 @ $0.84 | EDGAR |
| 2024-09-05 | 4 | Vied David L — Director | Grant/award (A): 39,506 @ $0 | EDGAR |
| 2024-09-05 | 4 | MULDER DAVID M — Director | Grant/award (A): 39,506 @ $0 | EDGAR |
| 2024-09-05 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.79 · Purchase (P): 5,000 @ $0.85 · Grant/award (A): 37,037 @ $0 | EDGAR |
| 2024-09-03 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.75 · Purchase (P): 5,000 @ $0.79 · Purchase (P): 5,000 @ $0.75 | EDGAR |
| 2024-08-29 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.80 · Purchase (P): 5,000 @ $0.79 | EDGAR |
| 2024-08-27 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.84 · Purchase (P): 5,000 @ $0.77 | EDGAR |
| 2024-08-23 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.75 · Purchase (P): 5,000 @ $0.76 | EDGAR |
| 2024-08-21 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.89 · Purchase (P): 5,000 @ $0.87 | EDGAR |
| 2024-08-19 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.75 · Purchase (P): 5,000 @ $0.85 | EDGAR |
| 2024-08-15 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.74 · Purchase (P): 5,000 @ $0.70 | EDGAR |
| 2024-08-13 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.79 · Purchase (P): 5,000 @ $0.74 | EDGAR |
| 2024-08-09 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.70 · Purchase (P): 5,000 @ $0.75 | EDGAR |
| 2024-08-07 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.77 · Purchase (P): 5,000 @ $0.80 | EDGAR |
| 2024-08-05 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.83 · Purchase (P): 5,000 @ $0.79 | EDGAR |
| 2024-08-01 | 4 | DAVIS MICHAEL A / — Director, 10% owner | Purchase (P): 5,000 @ $0.71 · Purchase (P): 5,000 @ $0.83 | EDGAR |
Recent 8-K events — CYANOTECH CORP
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2025-09-02 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2025-08-22 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 8.01 — Other Events | EDGAR |
| 2025-05-08 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2024-12-16 | 8-K | 4.01 — Changes in Registrant's Certifying Accountant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2024-08-23 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 5.07 — Submission of Matters to a Vote of Security Holders 8.01 — Other Events | EDGAR |
| 2024-08-13 | 8-K | 1.01 — Entry into a Material Definitive Agreement 2.03 — Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant 9.01 — Financial Statements and Exhibits | EDGAR |
| 2024-02-14 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2023-12-19 | 8-K | 3.02 — Unregistered Sales of Equity Securities 9.01 — Financial Statements and Exhibits | EDGAR |
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