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Zelluna ASAOSTO:ULTIO 29 10-Year Share Buyback Ratio is -12.90 as of Jun. 2026. GuruFocus rates OSTO:ULTIO with a GF Score™ of 29/100. The stock has 2 warning signs investors should review. Among 658 Biotechnology companies, Zelluna ASA ranks worse than 51.98% on this metric.
Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten years ago to the current year. A positive ratio may indicate share buybacks over the period, while a zero or negative ratio may reflect no repurchases or potential share issuance. Zelluna ASA's current 10-Year Share Buyback Ratio was -12.90%.
OSTO:ULTIo's 10-Year Share Buyback Ratio is ranked worse than 51.98% of 658
companies
in the Biotechnology industry
Industry Median: -12.15
vs OSTO:ULTIo: -12.90
Zelluna ASA (OSTO:ULTIo) 10-Year Share Buyback Ratio Explanation
A negative number means the company might be issuing new shares. A positive number indicates that the company is buying back shares.
Be Aware
Investors usually like share buybacks. But as pointed by Warren Buffett, only if a company buys back shares at the prices below the stock's intrinsic value, it rewards remaining shareholders. If a company buys its overvalued stocks back, it destroys shareholder value.
Zelluna ASA 10-Year Share Buyback Ratio Related Terms
OSTO:ULTIO vs VRTX, REGN, MRNA: 10-Year Share Buyback Ratio Comparison
For the Biotechnology subindustry, Zelluna ASA's 10-Year Share Buyback Ratio, along with its competitors' market caps and 10-Year Share Buyback Ratio data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Zelluna ASA 10-Year Share Buyback Ratio vs Biotechnology Industry
For the Biotechnology industry and Healthcare sector, Zelluna ASA's 10-Year Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where Zelluna ASA's 10-Year Share Buyback Ratio falls into.
Zelluna ASA 10-Year Share Buyback Ratio Calculation
This is the annualized percentage change in shares outstanding from ten years ago to the current year. The annualized percentage change is calculated with least-square regression based on the eleven years of annual data on Shares Outstanding (EOP).
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average dividends per share growth rate.
What does a 10-Year Share Buyback Ratio of -12.90 mean?
Zelluna ASA (OSTO:ULTIO) has a 10-Year Share Buyback Ratio of -12.90 as of Jun. 2026. The 10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten years ago to the current year. View historical data for Zelluna ASA and its competitors. According to the industry distribution chart, Zelluna ASA ranks #342 out of 658 companies in the Biotechnology industry, placing it in the top 52%.
Is Zelluna ASA's 10-Year Share Buyback Ratio too high?
Zelluna ASA's current 10-Year Share Buyback Ratio is -12.90. Based on the distribution chart, Zelluna ASA ranks #342 out of 658 companies in the Biotechnology industry, which is below the industry midpoint. Overall, Zelluna ASA has a GF Score™ of 29/100, reflecting its overall financial health beyond just this single metric.
How does Zelluna ASA's 10-Year Share Buyback Ratio compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, Zelluna ASA ranks #342 out of 658 companies for 10-Year Share Buyback Ratio. This places Zelluna ASA in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 10-Year Share Buyback Ratio for a Biotechnology company?
A good 10-Year Share Buyback Ratio depends on the Biotechnology industry context. However, 10-Year Share Buyback Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 10-Year Share Buyback Ratio mean?
A high 10-Year Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten years ago to the current year. View historical data for Zelluna ASA and its competitors. Zelluna ASA's current 10-Year Share Buyback Ratio is -12.90. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zelluna ASA stock overvalued right now?
Zelluna ASA (OSTO:ULTIO) has a current 10-Year Share Buyback Ratio of -12.90. The current 10-Year Share Buyback Ratio is -12.90. Zelluna ASA's overall GF Score™ is 29/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 10-Year Share Buyback Ratio calculated?
10-Year Share Buyback Ratio is calculated from a company's financial statements. For Zelluna ASA (OSTO:ULTIO), the current 10-Year Share Buyback Ratio is -12.90 as of Jun. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Zelluna ASA is a biotechnology company established to eliminate solid cancers by unleashing the powerful elements of the immune system through pioneering the development of T cell receptor (TCR) guided natural killer (NK) cell therapies (TCR-NK). Its TCR-NK products are composed of healthy donor-derived NK cells that are genetically engineered to express a tumour-specific TCR that enable the TCR-NK cells to identify and eliminate cancer cells in the body of the patient. Its programme ZI-MA4-1, the first MAGE-A4-targeting TCR-NK therapy for solid tumours with high unmet medical need. Its other programmes include ZI-KL1-1, and ZI-PR-1.
29GF Score
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