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This stock no longer trades (delisted July 3, 2026)

Delisted / no longer publicly traded (per market data provider) Everything below is based on the last available data — treat it as historical, not a live read.

Aptose Biosciences logo

Aptose Biosciences

APS.TO
Biotechnology · Healthcare
Price
C$2.40
+0.00 (+0.00%)
Market Cap
C$6.1M
Exchange
Toronto Stock Exchange
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 falling — buybacks

46.3% over 4y

The company has reduced its share count over this period, returning value to shareholders through buybacks.

Diluted shares outstanding: 4.6M (2021) → 2.4M (2025)

Winston Score History

The full picture

Aptose Biosciences is a small Canadian biotechnology company focused on developing cancer treatments. Its main work centers on experimental drugs targeting blood cancers, particularly leukemia. The company does not yet sell any approved products — it is still in the clinical trial stage, testing its drug candidates in patients.

Aptose earns no product revenue today. It funds its research through equity raises and other financing, which is typical for early-stage biotech companies. Based in Canada and operating primarily in North America, it has a very small team and a market cap near zero, reflecting the high uncertainty around its pipeline. The central risk is that clinical trials are expensive, success rates are low, and the company must continually raise new capital to survive — meaning existing shareholders face ongoing dilution until a drug either succeeds or the company runs out of funding.

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

<−1,000% YoY

YoY Growth Rate

Earnings declining

R&D Spend

$12M/ year

Declining (-24% vs prior year)

R&D spend declining — could signal cost-cutting or efficiency

Insider Activity

27.3%ownership

Insiders own a meaningful stake in the company

Cash Runway

~2 months

$4M cash & investments

Quarterly Free Cash Flow

↑ Burn rate improving

Short runway — potential dilution ahead through share issuance

Cash watch

Aptose Biosciences 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
N/A
Data not available
Profit after running costs
Operating Margin
N/A
Data not available
Return on the money invested
ROCE
N/A
Data not available

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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
4/8 quarters
Earnings inconsistent quarter-to-quarter

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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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