CYAN
Cyanotech Corporation
OTC Markets OTCIDUSDEQUITY
Consumer Defensive
DELAYED
Strong buy
+67/100
Last price
0.53
▲ 0.13 (32.50%)
MARKET · —
Price
Chart style
Interval
Intraday intervals only cover recent history. The site picks the finest interval the range allows.
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Session levels
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Both series are rebased to 0% at the left edge, so the lines show relative performance rather than price.
Tool
1D
—
H —
L —
Range —
Vol —
vs
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Open
—
Prev close
0.40
Day high
0.55
Day low
0.50
Volume
9.00K
Market cap
$3.84M
P/E (TTM)
—
52W range
0.23 – 0.57
Trailing performance
Returnvs SPY
1W
+26.19%
+24.2%
1M
+8.16%
+7.0%
3M
+1.92%
-2.6%
6M
+76.67%
+58.5%
YTD
+17.78%
+3.5%
1Y
+60.61%
+44.2%
3Y
-33.75%
-116.0%
5Y
—
—
Price return only. Dividends are not reinvested, so total return on a dividend payer will be higher than shown.
Unusual options activity
Nothing crossed the thresholds in the expiries we scanned.
That is the normal state — most contracts trade well inside their existing open interest.
That is the normal state — most contracts trade well inside their existing open interest.
Contracts trading at or above their open interest, ranked by notional and where the print landed.
Free account
5 more panels on CYAN open with an account.
Options chains and analytics, valuation ratios, insider filings, analyst targets and ownership. No card, no trial, nothing to cancel.
Insider net activity
Net shares
0
Net selling
Buy transactions
0
0 shares
Sell transactions
0
—
Net transactions
0
Buys less sells
Sell : buy shares
—
Not enough filings
Insider-held shares
2.42M
Total on file
Insider transactions
| Date | Insider | Action | Shares | Value | Held |
|---|---|---|---|---|---|
| Aug 28, 25 | DAVIS MICHAEL A Director and Beneficial Owner of more than 10% of a Class of Security |
— | 50.00K | — | Indirect |
| Aug 28, 25 | MULDER DAVID M Director |
— | 50.00K | — | Direct |
| Aug 28, 25 | VIED DAVID L Director |
— | 50.00K | — | Direct |
| Jul 29, 25 | CYSEWSKI GERALD R Officer |
— | 1.58K | — | Direct |
| Jul 29, 25 | JENSEN GLENN D Officer |
— | 1.64K | — | Direct |
| Jul 29, 25 | JOHANSEN JENNIFER M. Officer |
— | 1.38K | — | Direct |
| Jul 29, 25 | NORDIN AMY BETH Officer |
— | 1.50K | — | Direct |
| Jul 29, 25 | CUSTER MATTHEW KEITH Chief Executive Officer |
— | 2.08K | — | Direct |
| Apr 7, 25 | CYSEWSKI GERALD R Officer |
— | 33 | — | Direct |
| Apr 7, 25 | JENSEN GLENN D Officer |
— | 33 | — | Direct |
| Apr 7, 25 | JOHANSEN JENNIFER M. Officer |
— | 33 | — | Direct |
| Apr 7, 25 | NORDIN AMY BETH Officer |
— | 33 | — | Direct |
| Apr 7, 25 | CUSTER MATTHEW KEITH Chief Executive Officer |
— | 33 | — | Direct |
| Apr 7, 25 | KAKUK COLLETTE NICOLE Officer |
— | 33 | — | Direct |
What this is, and what it is not
These are SEC Form 4 filings — officers, directors and 10% owners reporting their own trades in the company's stock. Filing is due within two business days of the transaction, so this lags reality by days, and the provider adds its own lag on top.
A sale is not automatically bearish. Executives sell on scheduled 10b5-1 plans, to cover tax on vesting equity, and to diversify. Purchases with cash are generally the more informative signal, and they are far rarer.
This does not include congressional or senate trading. That comes from STOCK Act disclosures filed with the Senate eFD system and the House Clerk, which this data source does not carry.
Officer and director trades in their own stock, straight from Form 4 filings.
Insider holders
| Name | Relation | Shares held | Latest |
|---|---|---|---|
CUSTER MATTHEW KEITH |
Chief Executive Officer | 6.75K | Conversion of Exercise of derivative security |
CYSEWSKI GERALD R |
Officer | 146.95K | Conversion of Exercise of derivative security |
DAVIS MICHAEL A |
Director and Beneficial Owner of more than 10% of a Class of Security | — | Stock Award(Grant) |
JENSEN GLENN D |
Officer | 44.32K | Conversion of Exercise of derivative security |
JOHANSEN JENNIFER M. |
Officer | 9.74K | Conversion of Exercise of derivative security |
KAKUK COLLETTE NICOLE |
Officer | 4.71K | Conversion of Exercise of derivative security |
MULDER DAVID M |
Director | 203.47K | Stock Award(Grant) |
NORDIN AMY BETH |
Officer | 9.05K | Conversion of Exercise of derivative security |
VIED DAVID L |
Director | 225.14K | Stock Award(Grant) |
Fundamentals
Market cap$3.84M
Enterprise value$15.27M
Revenue (TTM)$25.27M
Gross profit$8.20M
EBITDA$515.00K
Net income$-1.78M
EPS (TTM)$-0.18
Free cash flow$-150.00K
Total cash$649.00K
Total debt$12.00M
Book value / share$1.09
Shares outstanding7.25M
Float4.85M
Short % of float0.01%
Dividend yield0.00%
Beta (5Y)0.06
Valuation & profitability ratios
Trailing P/E—
Forward P/E—
PEG ratio-7.47
Price / sales—
Price / book0.49
EV / revenue0.60
EV / EBITDA29.66
Gross margin32.44%
Operating margin2.72%
Profit margin-7.03%
Return on equity-20.00%
Return on assets-2.46%
Debt / equity148.84
Current ratio1.00
Fourteen ratios including P/E, PEG, EV/EBITDA, margins and return on equity.
Financial statements
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Total revenue | $24.21M | $23.07M | $23.18M | $35.97M | +5.0% |
| Operating revenue | $24.21M | $23.07M | $23.18M | $35.97M | +5.0% |
| Cost of revenue | $17.34M | $17.13M | $15.92M | $22.40M | +1.2% |
| Gross profit | $6.88M | $5.95M | $7.26M | $13.57M | +15.7% |
| Research & development | $449.00K | $689.00K | $770.00K | $712.00K | -34.8% |
| Selling, general & admin | $8.94M | $9.85M | $9.41M | $10.28M | -9.3% |
| Total operating expense | $9.38M | $10.54M | $10.18M | $10.99M | -10.9% |
| Operating income | -$2.51M | -$4.59M | -$2.92M | $2.57M | +45.4% |
| Net interest income | -$687.00K | -$668.00K | -$502.00K | -$392.00K | -2.8% |
| Pre-tax income | -$3.19M | -$5.26M | -$3.42M | $2.18M | +39.3% |
| Tax provision | $8.00K | $7.00K | $18.00K | $28.00K | +14.3% |
| Net income | -$3.20M | -$5.27M | -$3.44M | $2.15M | +39.2% |
| Net income to common | -$3.20M | -$5.27M | -$3.44M | $2.15M | +39.2% |
| Basic EPS | -0.45 | -0.81 | -0.55 | 0.35 | +44.4% |
| Diluted EPS | -0.45 | -0.81 | -0.55 | 0.35 | +44.4% |
| EBIT | -$2.51M | -$4.59M | -$2.92M | $2.57M | +45.4% |
| EBITDA | -$629.00K | -$2.51M | -$825.00K | $4.50M | +75.0% |
| Basic shares | 7.07M | 6.53M | 6.24M | 6.16M | +8.3% |
| Diluted shares | 7.07M | 6.53M | 6.24M | 6.17M | +8.3% |
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Cash & equivalents | $257.00K | $707.00K | $974.00K | $2.59M | -63.6% |
| Cash & short-term investments | $257.00K | $707.00K | $974.00K | $2.59M | -63.6% |
| Accounts receivable | $1.95M | $2.10M | $1.33M | $3.66M | -7.1% |
| Inventory | $7.79M | $7.31M | $10.71M | $9.47M | +6.5% |
| Total current assets | $10.54M | $10.59M | $13.50M | $16.26M | -0.4% |
| Property, plant & equipment | $12.83M | $14.39M | $16.14M | $15.67M | -10.9% |
| Total assets | $23.49M | $25.11M | $29.73M | $32.05M | -6.5% |
| Total current liabilities | $10.24M | $8.55M | $8.10M | $4.82M | +19.7% |
| Current debt | $6.65M | $5.63M | $5.41M | $490.00K | +18.0% |
| Long-term debt | $1.00M | $1.00M | $1.00M | $4.34M | 0.0% |
| Total debt | $11.56M | $10.90M | $11.17M | $8.61M | +6.1% |
| Total liabilities | $14.61M | $13.30M | $13.38M | $12.56M | +9.8% |
| Retained earnings | -$26.10M | -$22.90M | -$17.63M | -$14.19M | -14.0% |
| Shareholder equity | $8.88M | $11.81M | $16.35M | $19.49M | -24.8% |
| Working capital | $302.00K | $2.04M | $5.39M | $11.44M | -85.2% |
| Net tangible assets | $8.88M | $11.81M | $16.35M | $19.49M | -24.8% |
| Shares issued | 7.20M | 6.95M | 6.27M | 6.20M | +3.6% |
| Line item | 2025 | 2024 | 2023 | 2022 | YoY |
|---|---|---|---|---|---|
| Net income | -$3.20M | -$5.27M | -$3.44M | $2.15M | +39.2% |
| Depreciation & amortisation | $1.88M | $2.08M | $2.10M | $1.92M | -9.7% |
| Stock-based compensation | $247.00K | $359.00K | $310.00K | $344.00K | -31.2% |
| Change in working capital | -$151.00K | $2.36M | -$1.17M | -$2.15M | -106.4% |
| Operating cash flow | -$1.19M | -$455.00K | -$2.10M | $2.38M | -162.2% |
| Capital expenditure | -$247.00K | -$381.00K | -$1.07M | -$1.27M | +35.2% |
| Investing cash flow | -$247.00K | -$381.00K | -$1.07M | -$1.27M | +35.2% |
| Financing cash flow | $990.00K | $569.00K | $1.55M | -$2.29M | +74.0% |
| Free cash flow | -$1.44M | -$836.00K | -$3.17M | $1.11M | -72.2% |
| End cash position | $257.00K | $707.00K | $974.00K | $2.59M | -63.6% |
| Line item | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|
| Total revenue | $5.88M | $6.98M | $5.82M | $6.30M | -15.8% |
| Operating revenue | $5.88M | $6.98M | $5.82M | $6.30M | -15.8% |
| Cost of revenue | $3.76M | $4.58M | $4.05M | $4.56M | -17.9% |
| Gross profit | $2.12M | $2.39M | $1.77M | $1.74M | -11.6% |
| Research & development | $42.00K | $78.00K | $74.00K | $101.00K | -46.2% |
| Selling, general & admin | $2.13M | $2.13M | $2.45M | $2.08M | +0.0% |
| Total operating expense | $2.17M | $2.20M | $2.53M | $2.18M | -1.6% |
| Operating income | -$53.00K | $190.00K | -$753.00K | -$442.00K | -127.9% |
| Net interest income | -$177.00K | -$189.00K | -$173.00K | -$177.00K | +6.3% |
| Pre-tax income | -$230.00K | $1.00K | -$926.00K | -$619.00K | -23,100.0% |
| Tax provision | $0 | $0 | $0 | $8.00K | — |
| Net income | -$230.00K | $1.00K | -$926.00K | -$627.00K | -23,100.0% |
| Net income to common | -$230.00K | $1.00K | -$926.00K | -$627.00K | -23,100.0% |
| Basic EPS | -0.03 | 0.00 | -0.13 | — | — |
| Diluted EPS | -0.03 | 0.00 | -0.13 | — | — |
| EBIT | -$53.00K | $190.00K | -$753.00K | -$442.00K | -127.9% |
| EBITDA | -$53.00K | $672.00K | -$258.00K | $46.00K | -107.9% |
| Basic shares | 7.39M | 7.29M | 7.21M | — | +1.4% |
| Diluted shares | 7.39M | 7.29M | 7.21M | — | +1.4% |
| Line item | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|
| Cash & equivalents | $548.00K | $649.00K | $383.00K | $257.00K | -15.6% |
| Cash & short-term investments | $548.00K | $649.00K | $383.00K | $257.00K | -15.6% |
| Accounts receivable | $2.25M | $2.35M | $1.56M | $1.95M | -4.5% |
| Inventory | $8.09M | $8.38M | $8.11M | $7.79M | -3.4% |
| Total current assets | $11.37M | $11.93M | $10.52M | $10.54M | -4.7% |
| Property, plant & equipment | $11.55M | $11.98M | $12.36M | $12.83M | -3.6% |
| Total assets | $23.04M | $24.03M | $23.00M | $23.49M | -4.1% |
| Total current liabilities | $11.27M | $11.89M | $10.78M | $10.24M | -5.2% |
| Current debt | $7.36M | $7.36M | $7.13M | $6.65M | +0.1% |
| Long-term debt | $1.00M | $1.00M | $1.00M | $1.00M | 0.0% |
| Total debt | $11.87M | $12.00M | $11.91M | $11.56M | -1.1% |
| Total liabilities | $15.20M | $15.96M | $14.99M | $14.61M | -4.8% |
| Retained earnings | -$27.26M | -$27.03M | -$27.03M | -$26.10M | -0.9% |
| Shareholder equity | $7.84M | $8.06M | $8.00M | $8.88M | -2.7% |
| Working capital | $92.00K | $39.00K | -$255.00K | $302.00K | +135.9% |
| Net tangible assets | $7.84M | $8.06M | $8.00M | $8.88M | -2.7% |
| Shares issued | 7.39M | 7.39M | 7.23M | 7.20M | 0.0% |
| Line item | 2025-12-31 | 2025-09-30 | 2025-06-30 | 2025-03-31 | YoY |
|---|---|---|---|---|---|
| Net income | -$230.00K | $1.00K | -$926.00K | -$627.00K | -23,100.0% |
| Depreciation & amortisation | — | $482.00K | $495.00K | $488.00K | — |
| Stock-based compensation | — | $25.00K | $49.00K | $20.00K | — |
| Change in working capital | — | -$411.00K | $48.00K | $64.00K | — |
| Operating cash flow | -$65.00K | $108.00K | -$328.00K | -$57.00K | -160.2% |
| Capital expenditure | — | -$64.00K | -$22.00K | -$84.00K | — |
| Investing cash flow | -$37.00K | -$64.00K | -$22.00K | -$84.00K | +42.2% |
| Financing cash flow | $1.00K | $222.00K | $476.00K | $39.00K | -99.5% |
| Free cash flow | -$65.00K | $44.00K | -$350.00K | -$141.00K | -247.7% |
| End cash position | $548.00K | $649.00K | $383.00K | $257.00K | -15.6% |
Options analytics
Put / call volume
—
—
Put / call open interest
—
Positioning, not flow
Max pain
—
—
ATM implied vol
—
Nearest strike to spot
Skew (10% OTM)
—
—
Call volume
0
Contracts, this expiry
Put volume
0
Contracts, this expiry
Heaviest call OI
—
—
Heaviest put OI
—
—
Max pain is the strike at which the largest dollar value of open contracts expires worthless. It describes current positioning; it is not a forecast and it moves as open interest changes.
Put/call ratios, max pain, implied volatility skew and where open interest is concentrated.
Earnings
Reported vs expected · EPS
| Quarter | Est. | Actual | Surprise |
|---|---|---|---|
| Dec 2010 | — | 0.00 | — |
| Sep 2010 | — | 0.10 | — |
| Jun 2010 | — | 0.07 | — |
Forward consensus
| Period | EPS | Analysts | Revenue | Growth |
|---|---|---|---|---|
| Current quarter | — | — | $0 | — |
| Next quarter | — | — | $0 | — |
| Current year | — | — | $0 | — |
| Next year | — | — | $0 | — |
Analyst targets & ownership
Mean target—
High target—
Low target—
Implied upside—
Analyst count—
ConsensusNONE
Strong buy / Buy— / —
Hold—
Sell / Strong sell— / —
Held by insiders32.77%
Held by institutions0.00%
Institutions holding0
Price targets, consensus spread, insider and institutional ownership.
Moving averages & technicals
SMA 10
0.44
+21.00% from price
SMA 20
0.46
+14.22% from price
SMA 50
0.48
+10.97% from price
SMA 100
0.48
+10.28% from price
SMA 200
0.44
+21.21% from price
EMA 12
0.44
+19.24% from price
EMA 26
0.46
+15.60% from price
EMA 50
0.47
+13.21% from price
RSI (14)
59.4
Neutral
MACD (12,26,9)
-0.01
Hist -0.00
ATR (14)
0.06
11.86% of price
Realised vol 30D
145.1%
Annualised
Bollinger upper
0.56
20, 2σ
Bollinger lower
0.37
20, 2σ
50 / 200 cross
Golden
0.48 vs 0.44
Trend bias
Above 200
+21.21%
Options chain
Calls
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Puts
| Strike | Last | Bid | Ask | Vol | OI | IV |
|---|---|---|---|---|---|---|
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
| 000.00 | 0.00 | 0.00 | 0.00 | 0 | 0 | 0.0% |
Every listed expiry, both sides of the book, with volume, open interest and implied volatility.
Risk profile
Beta vs SPY
0.51
Less volatile than market
Correlation to SPY
0.04
Largely independent
Realised vol 30D
145.1%
Annualised
Market vol 1Y
13.0%
SPY, annualised
Max drawdown 1Y
-49.1%
Peak to trough
Max drawdown 5Y
-94.5%
Peak to trough
ATR 14
0.06
11.86% of price
Beta (reported)
0.06
5Y monthly, from filing
Short interest
Shares short
509
Prior 1.50K
Change vs prior
-66.1%
Shorts covering
% of float
0.01%
Normal
% of shares out
0.01%
Against total outstanding
Days to cover
0.0
Liquid
Float
4.85M
Freely tradeable shares
Exchanges publish short interest twice a month with a settlement lag, so this is roughly two weeks behind. Days to cover divides shares short by average daily volume — it estimates how long covering would take, not whether it will happen.
Dividends & splits
Forward rate—
Forward yield0.00%
5-year avg yield—
Payout ratio0.00%
Ex-dividend date—
Next pay date—
Last split1:4
Split dateNov 6, 2006
SEC filings
Tender Offer/Acquisition Reports
SC 13E3/A · 2026-02-13
Tender Offer/Acquisition Reports
SC 13E3/A · 2026-02-03
Tender Offer/Acquisition Reports
SC 13E3 · 2026-01-09
Periodic Financial Reports
10-Q · 2025-11-10
Corporate Changes & Voting Matters
8-K · 2025-09-02
Corporate Changes & Voting Matters
8-K · 2025-08-22
Periodic Financial Reports
10-Q · 2025-08-06
Proxy Statements
DEF 14A · 2025-07-10
PRIVATE STRATEGY · BY QUALIFICATION
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