PURE Bioscience

PURE

Chemicals · Basic Materials

Price

$0.06

+0.00 (+0.00%)

Market Cap

$7.8M

Winston Score

Winston is serious

Below-average fundamentals — multiple weak pillars.

Data as of Aug 23, 2026 · filings through Apr 30, 2026

How the score breaks down

Quality

Weak

Growth

Strong

Cash Flow

Weak

Stability

Data not available

Valuation

Data not available

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Share count rising — dilution

+28.3% over 4y

The company has issued more shares over this period, which dilutes each existing shareholder’s stake.

Diluted shares outstanding: 87.2M (2021) → 111.9M (2025)

Winston Score History

The full picture

PURE Bioscience makes cleaning and disinfecting products using a silver-based technology called SILV-X. The company sells antimicrobial solutions to schools, food service companies, and healthcare facilities that need to kill germs without harsh chemicals. It operates in the consumer defensive sector, competing against much larger cleaning product brands.

The company earns money by selling its disinfectant products and licensing its silver dioxide technology to other businesses. PURE Bioscience is a small company based in California, with most of its sales coming from the United States. Its main competitive edge is the patented silver-based formula, which it claims is effective against a broad range of pathogens without leaving toxic residue — but the biggest risk is its ongoing operating losses, meaning it spends more money than it brings in, and it will need to significantly grow revenue or cut costs to reach profitability.

Growth Profile

For growth stock investors

When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.

Revenue Growth

+3.1% YoY

YoY Growth Rate

Slow revenue growth

EPS Growth

-7.7% YoY

YoY Growth Rate

Earnings declining

R&D Spend

$316,000/ year

→ Flat (+5% vs prior year)

14.4% of revenue

4.8x the sector average (3%)

Steady R&D investment year-over-year

Insider Activity

30.6%ownership

↓ Declining

Insider ownership declining — could be dilution or selling

Cash Runway

~6 months

$983,000 cash & investments

Short runway — potential dilution ahead through share issuance

Cash watch

PURE Bioscience has less than a year of cash at its current burn rate. Growth investors should watch for potential share dilution from future fundraising — that directly reduces your ownership.

The Winston Score above measures business quality today. Growth stocks often score lower because they invest in the future rather than maximising current profits. These metrics show what matters most for evaluating that future.

Score breakdown

Every number that matters to educated investors.

Each metric is explained in plain language so you know exactly what you're looking at. Start your free trial now.

Quality

Profit per sale

Gross Margin

53.2%

Healthy — 53.2% gross margin

Profit after running costs

Operating Margin

-102.4%

Losing money on operations — -102.4%

Return on the money invested

ROCE

-78.7%

Weak — -78.7% return on capital

Negative ROIC means the business is losing money on every dollar invested in it.

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Growth

Sales growth

Sales YoY

+26.7%

Fast-growing sales (+26.7% YoY)

Profit growth

EPS YoY

N/A

—

Data not available

How steady the profit is

EPS Consistency

7/8 quarters

Every recent quarter grew earnings vs last year

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Cash Flow

Profit that turns into cash

Cash Conversion

N/A

—

Data not available

Spare cash per sale

FCF Margin

-73.5%

Burning cash (-73.5%)

Free cash flow is negative. They are burning cash, not generating it.

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Stability

What it owes vs what it owns

Debt / Equity

N/A

—

Data not available

Covers its interest

Interest Cover

N/A

Data not available

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Valuation

Price vs profit

P/E Ratio (TTM)

N/M

—

Negative earnings — P/E not meaningful

Cheaper or dearer next year

P/E vs Forward

N/A

not available

Data not available

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Dividends

Not applicable for this business.

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