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MBX Biosciences, Inc. Common Stock logo

MBX Biosciences, Inc. Common Stock

MBX
Biotechnology · Healthcare
Price
$66.33
-0.02 (-0.03%)
Market Cap
$3.16B
Exchange
NASDAQ
Winston Score
Winston looking sleepy
No score yet — Winston is napping.
We couldn’t gather enough financial data to score this stock reliably.

Share count rising — dilution

+14.6% over 3y

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

Diluted shares outstanding: 31.9M (2022) → 36.5M (2025)

Winston Score History

The full picture

MBX Biosciences is a clinical-stage biotechnology company focused on developing peptide-based medicines for rare endocrine and metabolic diseases. Its lead programs target conditions like hypoparathyroidism and short bowel syndrome, where patients have few or no approved treatment options. The company uses a proprietary drug design platform called Precision Endocrine Peptides to engineer more precise, longer-acting versions of natural hormones.

MBX makes no product revenue yet — it is funded through equity raises and is spending cash to run clinical trials. The company is based in the United States and, like most clinical-stage biotechs, operates at a loss while its drugs work through development. Its competitive position rests on its peptide engineering platform and the potential to address underserved rare disease markets, which often face less competition. The key risk is clinical: if its lead drug candidates fail in trials, the company loses its main source of future value.

Growth Profile

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

Revenue Growth

Revenue data limited

EPS Growth

-34.5% YoY

YoY Growth Rate

Earnings declining

R&D Spend

$79M/ year

Rising (+38% vs prior year)

R&D investment increasing — building for the future

Insider Activity

56.5%ownership

Flat

Insider ownership roughly steady over the past year

Cash Runway

~4 years

$419M cash & investments

Quarterly Free Cash Flow

↓ Burn rate worsening

$419M cash & investments at current burn rate

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
N/A
Data not available
Profit after running costs
Operating Margin
N/A
Data not available
Return on the money invested
ROCE
-28.8%
Weak — -28.8% 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
N/A
Data not available
Profit growth
EPS YoY
N/A
Data not available
How steady the profit is
EPS Consistency
1/8 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
N/A
Data not available

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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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