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Bolt Biotherapeutics

BOLT
27
Biotechnology · Healthcare
Exchange
NASDAQ Global Select
Winston Score
27
Winston is worried
Below-average fundamentals — multiple weak pillars.
Data as of Aug 23, 2026 · filings through Jun 30, 2026
How the score breaks down
Quality
Mixed
Growth
Mixed
Cash Flow
Weak
Stability
Data not available
Valuation
Data not available

Winston Score History

The full picture

Bolt Biotherapeutics is a clinical-stage biotechnology company working on new cancer treatments. It focuses on a technology called Boltbody Immune-stimulating Antibody Conjugates, or ISACs, which are designed to help the immune system find and attack cancer cells. The company's main customers are not everyday consumers — its drugs are aimed at cancer patients, and its partners are hospitals, research institutions, and potentially larger pharmaceutical companies.

Bolt makes money primarily through research collaborations and licensing deals with other drug companies, rather than selling approved products. It is based in Redwood City, California, and operates mainly in the United States, with a very small market cap reflecting its early-stage status. The company has no approved drugs yet and spends far more than it earns, which is typical for clinical-stage biotechs. The biggest risk it faces is whether its ISAC drug candidates will prove safe and effective enough in clinical trials to eventually reach patients and attract larger partners or acquirers.

Growth Profile

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

Revenue Growth

-99.7% YoY

YoY Growth Rate

Revenue declining

EPS Growth

-2.5% YoY

YoY Growth Rate

Earnings declining

Insider Activity

18.4%ownership

Insiders own a meaningful stake in the company

Cash Runway

~8 months

$18M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

Short runway — potential dilution ahead through share issuance

Cash watch

Bolt Biotherapeutics 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.

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Quality

Profit per sale
Gross Margin
100.0%
Premium pricing power — 100.0% gross margin
Profit after running costs
Operating Margin
-167480.0%
Losing money on operations — -167480.0%
Return on the money invested
ROCE
-231.7%
Weak — -231.7% 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
+12.8%
Fast-growing sales (+12.8% YoY)
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
2/8 quarters
Earnings rarely grow — volatile business

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Cash Flow

Profit that turns into cash
Cash Conversion
N/A
Data not available
Spare cash per sale
FCF Margin
-671.0%
Burning cash (-671.0%)

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
no trend
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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