The company has issued more shares over this period, which dilutes each existing shareholder’s stake.
Diluted shares outstanding: 22.0M (2022) → 23.1M (2025)
Heartseed Inc. is a Japan-based company engaged in research and development of regenerative medicine products. The company has established cardiac regenerative medicine, a therapy in which microtissue derived from iPS cells is transplanted into the heart for patients with severe heart failure. Target diseases include dilated cardiomyopathy, old myocardial infarction, and dilated-phase hypertrophic cardiomyopathy.
When traditional metrics don't capture the full picture, these are the signals growth stock investors use instead.
YoY Growth Rate
Revenue data limited
-6.1% YoY
YoY Growth Rate
Earnings declining
¥2.3B/ year
↑ Rising (+58% vs prior year)
75.3% of revenue
Investing heavily in future products and technology
Cash flow positive
¥6.3B cash & investments
Quarterly Free Cash Flow
Company generates more cash than it spends — no dilution risk from fundraising
Heartseed is putting 75% of revenue into R&D and that number is rising. And they're generating enough cash to self-fund it.
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.
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Negative ROIC means the business is losing money on every dollar invested in it.
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Earnings per share down more than 10%. Either a bad year, or a real decline.
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Free cash flow margin above 20%. Out of every $100 in sales, more than $20 is real cash they keep.
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Full breakdown available with your free trial
See every metric, trend, and what it means for this stock.
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