Cellectis S.A.

CLLS

Biotechnology · Healthcare

Price

$2.63

-0.04 (-1.50%)

Market Cap

$264.1M

Exchange

NASDAQ

Winston Score

Winston is worried

Weak fundamentals across most pillars.

Share count rising — dilution

+123.7% over 4y

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

Diluted shares outstanding: 44.8M (2021) → 100.3M (2025)

Cellectis S.A., a clinical stage biotechnological company, develops immuno-oncology products based on gene-edited T-cells that express chimeric antigen receptors to target and eradicate cancer cells. It operates through two segments, Therapeutics and Plants. The company is developing UCART19, an allogeneic T-cell product candidate for the treatment of CD19-expressing hematologic malignancies, such as acute lymphoblastic leukemia; ALLO-501 and ALLO-501A to treat relapsed/refractory diffuse large

Winston Score History

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

-45.6% YoY

YoY Growth Rate

Revenue declining

EPS Growth

+0.0% YoY

YoY Growth Rate

Slow EPS growth

R&D Spend

$94M/ year

→ Flat (+3% vs prior year)

128.2% of revenue

7.1x the sector average (18%)

Steady R&D investment year-over-year

Insider Activity

14.7%ownership

→ Flat

Insiders holding steady — not selling despite ability to

Cash Runway

~10 months

$35M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

Short runway — potential dilution ahead through share issuance

Cash watch

Cellectis S.A. 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

Gross Margin

21.5%

Thin — 21.5% gross margin

Operating Margin

-467.4%

Losing money on operations — -467.4%

ROCE

-19.0%

Weak — -19.0% return on capital

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

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Growth

Sales YoY

+42.9%

Fast-growing sales (42.9% YoY)

EPS YoY

N/A

Data not available

EPS Consistency

2/8 quarters

Earnings rarely grow — volatile business

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Cash Flow

Cash Conversion

N/A

Data not available

FCF Margin

-61.5%

Burning cash (-61.5%)

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

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Stability

Debt / Equity

1.38

Elevated debt (1.38)

Interest Cover

N/A

Data not available

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Valuation

P/E Ratio (TTM)

N/M

Negative earnings — P/E not meaningful

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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