CYANOTCMedicinal Chemicals & Botanical ProductsFiscal year ends March 31
CYANOTECH CORP
Financials through Q2 FY2026, quarter ended Sep 30, 2025Last filing: 10-Q on Nov 10, 2025
$0.70+0.00 (0.00%)
Close on Oct 19, 2026
- Market cap
- $5.11M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Who owns Cyanotech's shares
Held by institutions
–
Shares held, 13F filers
Institutional holders
–
Net institutional buying
–
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Michael A. Davis (“Davis”) | 1,788,756 | 25.00% | 13D (active) amendment | Oct 1, 2024 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Matthew Keith Custer | President and CEO, Director | 6,754 | 0.09% | Jul 31, 2025 |
| Jennifer A.S. Miyashiro | CFO, VP Fin & Admin, Treasurer | – | – | Sep 16, 2025 |
| Jennifer M. Johansen | VP, Quality, Regulatory & Govt | 9,743 | 0.13% | Jul 31, 2025 |
| Glenn Jensen | VP, Operations | 44,320 | 0.60% | Jul 31, 2025 |
| Amy Beth Nordin | VP, HR, Secretary | 9,051 | 0.12% | Jul 31, 2025 |
| Jennifer Kimberly Brand | VP of Sales | – | – | May 21, 2025 |
| Collette Nicole Kakuk | Chief Strategic Comml Officer | 4,721 | 0.06% | Apr 9, 2025 |
| Michael A. / Davis | Director, 10% owner | 1,838,756 | 24.87% | Sep 2, 2025 |
| David L. Vied | Director | 225,138 | 3.05% | Sep 2, 2025 |
| David M. Mulder | Director | 203,468 | 2.75% | Sep 2, 2025 |
| Gerald R. Cysewski | – | 146,947 | 1.99% | Jul 31, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| David L. Vied Director | Aug 28, 2025 | Award | +50,000 | – | – | 225,138 |
| David M. Mulder Director | Aug 28, 2025 | Award | +50,000 | – | – | 203,468 |
| Michael A. / Davis Director, 10% owner | Aug 28, 2025 | Award | +50,000 | – | – | 1,528,598 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Jul 29, 2025 | Tax withholding | −518 | $0.41 | $212 | 9,743 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Jul 29, 2025 | Option exercise | +1,380 | – | – | 10,261 |
| Glenn Jensen VP, Operations | Jul 29, 2025 | Tax withholding | −617 | $0.41 | $253 | 27,110 |
| Glenn Jensen VP, Operations | Jul 29, 2025 | Option exercise | +1,642 | – | – | 27,727 |
| Matthew Keith Custer President and CEO, Director | Jul 29, 2025 | Option exercise | +2,075 | – | – | 6,754 |
| Amy Beth Nordin VP, HR, Secretary | Jul 29, 2025 | Tax withholding | −525 | $0.41 | $215 | 9,051 |
| Amy Beth Nordin VP, HR, Secretary | Jul 29, 2025 | Option exercise | +1,502 | – | – | 9,576 |
| Gerald R. Cysewski – | Jul 29, 2025 | Tax withholding | −592 | $0.41 | $243 | 146,697 |
| Gerald R. Cysewski – | Jul 29, 2025 | Option exercise | +1,577 | – | – | 147,289 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Apr 7, 2025 | Option exercise | +33 | – | – | 8,894 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Apr 7, 2025 | Tax withholding | −13 | $0.31 | $4 | 8,881 |
| Gerald R. Cysewski – | Apr 7, 2025 | Option exercise | +33 | – | – | 145,725 |
| Gerald R. Cysewski – | Apr 7, 2025 | Tax withholding | −13 | $0.31 | $4 | 145,712 |
| Glenn Jensen VP, Operations | Apr 7, 2025 | Tax withholding | −13 | $0.31 | $4 | 26,085 |
| Glenn Jensen VP, Operations | Apr 7, 2025 | Option exercise | +33 | – | – | 26,098 |
| Amy Beth Nordin VP, HR, Secretary | Apr 7, 2025 | Tax withholding | −12 | $0.31 | $4 | 8,074 |
| Amy Beth Nordin VP, HR, Secretary | Apr 7, 2025 | Option exercise | +33 | – | – | 8,086 |
| Collette Nicole Kakuk Chief Strategic Comml Officer | Apr 7, 2025 | Option exercise | +33 | – | – | 4,721 |
| Collette Nicole Kakuk Chief Strategic Comml Officer | Apr 7, 2025 | Tax withholding | −14 | $0.31 | $4 | 4,707 |
| Matthew Keith Custer President and CEO, Director | Apr 7, 2025 | Option exercise | +33 | – | – | 4,679 |
| Collette Nicole Kakuk Chief Strategic Comml Officer | Feb 18, 2025 | Tax withholding | −1,556 | $0.40 | $622 | 4,688 |
| Collette Nicole Kakuk Chief Strategic Comml Officer | Feb 18, 2025 | Option exercise | +3,900 | – | – | 6,244 |
| Glenn Jensen VP, Operations | Feb 18, 2025 | Option exercise | +3,570 | – | – | 27,405 |
| Glenn Jensen VP, Operations | Feb 18, 2025 | Tax withholding | −1,340 | $0.40 | $536 | 26,065 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Feb 18, 2025 | Option exercise | +3,200 | – | – | 10,062 |
| Jennifer M. Johansen VP, Quality, Regulatory & Govt | Feb 18, 2025 | Tax withholding | −1,201 | $0.40 | $480 | 8,861 |
| Amy Beth Nordin VP, HR, Secretary | Feb 18, 2025 | Option exercise | +3,400 | – | – | 9,242 |
| Amy Beth Nordin VP, HR, Secretary | Feb 18, 2025 | Tax withholding | −1,189 | $0.40 | $476 | 8,053 |
| Gerald R. Cysewski – | Feb 18, 2025 | Tax withholding | −1,464 | $0.40 | $586 | 145,692 |
| Gerald R. Cysewski – | Feb 18, 2025 | Option exercise | +3,900 | – | – | 147,156 |
| Michael A. / Davis Director, 10% owner | Oct 1, 2024 | Award | +13,158 | $0.76 | $10.00K | 1,478,598 |
| Michael A. / Davis Director, 10% owner | Oct 1, 2024 | Buy | +5,000 | $0.76 | $3.80K | 1,465,440 |
| Michael A. / Davis Director, 10% owner | Sep 30, 2024 | Buy | +5,000 | $0.76 | $3.80K | 1,460,440 |
| Michael A. / Davis Director, 10% owner | Sep 27, 2024 | Buy | +5,000 | $0.77 | $3.85K | 1,455,440 |
| Michael A. / Davis Director, 10% owner | Sep 26, 2024 | Buy | +5,000 | $0.77 | $3.85K | 1,450,440 |
| Michael A. / Davis Director, 10% owner | Sep 25, 2024 | Buy | +5,000 | $0.77 | $3.85K | 1,445,440 |
| Michael A. / Davis Director, 10% owner | Sep 24, 2024 | Buy | +5,000 | $0.73 | $3.65K | 1,440,440 |
| Michael A. / Davis Director, 10% owner | Sep 23, 2024 | Buy | +5,000 | $0.77 | $3.85K | 1,435,440 |
| Michael A. / Davis Director, 10% owner | Sep 20, 2024 | Buy | +5,000 | $0.77 | $3.85K | 1,430,440 |
| Michael A. / Davis Director, 10% owner | Sep 19, 2024 | Buy | +5,000 | $0.74 | $3.70K | 1,425,440 |
| Michael A. / Davis Director, 10% owner | Sep 18, 2024 | Buy | +5,000 | $0.78 | $3.90K | 1,420,440 |
| Michael A. / Davis Director, 10% owner | Sep 17, 2024 | Buy | +4,000 | $0.74 | $2.96K | 1,414,440 |
| Michael A. / Davis Director, 10% owner | Sep 17, 2024 | Buy | +1,000 | $0.72 | $720 | 1,415,440 |
| Michael A. / Davis Director, 10% owner | Sep 16, 2024 | Buy | +5,000 | $0.82 | $4.10K | 1,410,440 |
| Michael A. / Davis Director, 10% owner | Sep 13, 2024 | Buy | +5,000 | $0.82 | $4.10K | 1,405,440 |
| Michael A. / Davis Director, 10% owner | Sep 12, 2024 | Buy | +5,000 | $0.83 | $4.15K | 1,400,440 |
| Michael A. / Davis Director, 10% owner | Sep 11, 2024 | Buy | +5,000 | $0.83 | $4.15K | 1,395,440 |
| Michael A. / Davis Director, 10% owner | Sep 10, 2024 | Award | +66,667 | $0.75 | $50.00K | 1,390,440 |
| Michael A. / Davis Director, 10% owner | Sep 10, 2024 | Buy | +5,000 | $0.83 | $4.15K | 1,323,773 |
| Michael A. / Davis Director, 10% owner | Sep 9, 2024 | Buy | +5,000 | $0.84 | $4.20K | 1,318,773 |
| Michael A. / Davis Director, 10% owner | Sep 6, 2024 | Buy | +5,000 | $0.84 | $4.20K | 1,313,773 |
| Michael A. / Davis Director, 10% owner | Sep 5, 2024 | Buy | +5,000 | $0.84 | $4.20K | 1,308,773 |
| David M. Mulder Director | Sep 4, 2024 | Award | +39,506 | – | – | 153,468 |
| Michael A. / Davis Director, 10% owner | Sep 4, 2024 | Buy | +5,000 | $0.85 | $4.25K | 1,266,736 |
| Michael A. / Davis Director, 10% owner | Sep 4, 2024 | Award | +37,037 | – | – | 1,303,773 |
| David L. Vied Director | Sep 4, 2024 | Award | +39,506 | – | – | 175,138 |
| Michael A. / Davis Director, 10% owner | Sep 3, 2024 | Buy | +5,000 | $0.79 | $3.95K | 1,261,736 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.