Cyanotech Corp (CYAN) stock
Close on Oct 19, 2026Market cap $5.11MP/E –Yield –
Cyanotech Corp grew revenue 8.5% to $25.27M over the twelve months to Sep 30, 2025. At the latest close the market valued the company at $5.11M.
Key statistics
Valuation at the latest close; fundamentals over the trailing twelve months, balances at Sep 30, 2025
Valuation
- Market cap
- $5.11M
- P/E ratio
- –
- Price to sales
- 0.20
- Price to book
- 0.63
- Dividend yield
- –
- Free cash flow yield
- –
Fundamentals
- Revenue
- $25.27M
- Net income
- -$1.78M
- EPS, diluted
- -$0.25
- Book value per share
- $1.11
- Diluted shares
- 7M
Trading
- Previous close
- $0.70
- Open
- $0.70
- Day's range
- $0.70 – $0.70
- Volume
- 0
- Average volume (20 days)
- 10,752
Market cap history
Month-end market cap since 2010, using shares outstanding reported at the time
Total return vs. the S&P 500
Price change plus reinvested dividends, to the close on Oct 19, 2026. The S&P 500 is measured by the SPY fund.
| Period | CYAN | S&P 500 | Difference | CYAN per year | S&P 500 per year |
|---|---|---|---|---|---|
| 1 month | +52.2% | +0.6% | +51.5 pts | ||
| 3 months | +32.1% | +3.4% | +28.7 pts | ||
| Year to date | +55.6% | +13.3% | +42.3 pts | ||
| 1 year | +141.4% | +16.6% | +124.8 pts | ||
| 3 years | -5.4% | +86.4% | −91.8 pts | -1.8% | +23.1% |
| 5 years | -75.1% | +81.9% | −156.9 pts | -24.3% | +12.7% |
| 10 years | -82.9% | +318.9% | −401.8 pts | -16.2% | +15.4% |
Fifteen years at a glance
Fiscal years 2011 to 2025 and trailing twelve months, USD
Revenue
Gross profit
Operating income
Net income
EPS, diluted
Free cash flow
About Cyanotech
Medicinal Chemicals & Botanical Products
Cyanotech Corporation cultivates and manufactures microalgae into natural health and nutritional products. Operating as a single segment, the company develops two main product lines: BioAstin, a natural antioxidant derived from Haematococcus pluvialis microalgae, and Hawaiian Spirulina Pacifica, a nutrient-dense microalgae superfood. These items are produced in formats such as bulk powders, tablets, gelcaps, and gummies. The company also offers contract extraction along with research and development services. Products are distributed directly to consumers, online channels, retailers, and natural product distributors, as well as to dietary supplement manufacturers, health food formulators, and cosmetic manufacturers.
Company profile, executives and historyCyanotech stock: common questions
What is Cyanotech's stock price?
CYAN closed at $0.70 on Oct 19, 2026, up 0.00% on the day.
What is Cyanotech's market cap?
Cyanotech was worth $5.11M at the close on Oct 19, 2026: the share price times the diluted shares outstanding.
What is CYAN's P/E ratio?
Cyanotech lost money over the twelve months to Sep 30, 2025 (diluted EPS -$0.25), so it has no meaningful P/E ratio.
How much revenue does Cyanotech make?
Cyanotech reported revenue of $25.27M for the twelve months to Sep 30, 2025, up 8.5% from a year earlier.
Does Cyanotech pay a dividend?
No. Cyanotech has not paid a cash dividend over the last twelve months.
How has CYAN stock performed over the past year?
Including dividends, CYAN returned +141.4% over the past year, against +16.6% for the S&P 500.
Who are Cyanotech's competitors?
Companies most similar to Cyanotech by business, industry and size include BON, LEEEF, SNYRQ, CHUC, HYEX.
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