SuperworthSutro Biopharma shares outstanding STRO
Diluted shares outstanding, averaged over each quarter, from 2017.
- Latest quarter, to Jun 30, 2026
- 16.6M
- On a year earlier
- +94.7%
- more shares
Sutro Biopharma had 16.6M diluted shares outstanding on average in Q2 FY26, the quarter to Jun 30, 2026.
That is 94.7% more than a year earlier, so each share owns a little less of the company.
Shares outstanding over time
Fiscal year by fiscal year
| Fiscal year | Shares, fourth quarter | Change |
|---|---|---|
| FY2025 | 8.6M | +4% |
| FY2024 | 8.2M | +35% |
| FY2023 | 6.1M | +7% |
| FY2022 | 5.7M | +23% |
| FY2021 | 4.6M | +15% |
| FY2020 | 4M | +74% |
| FY2019 | 2.3M | +4943% |
| FY2017 | 45.8K | n/a |
Each fiscal year is the twelve months to its fourth quarter, shown as the fourth quarter's average share count.
Quarter by quarter
| Quarter | Ended | Shares outstanding | On a year earlier |
|---|---|---|---|
| Q2 FY26 | 16.6M | +95% | |
| Q1 FY26 | 13.1M | +56% | |
| Q4 FY25 | 8.6M | +4% | |
| Q3 FY25 | 8.5M | +3% | |
| Q2 FY25 | 8.5M | +5% | |
| Q1 FY25 | 8.4M | +36% | |
| Q4 FY24 | 8.2M | +35% | |
| Q3 FY24 | 8.2M | +35% | |
| Q2 FY24 | 8.1M | +35% | |
| Q1 FY24 | 6.1M | +5% | |
| Q4 FY23 | 6.1M | +7% | |
| Q3 FY23 | 6.1M | +16% |
What the shares outstanding tells you
Diluted shares outstanding, averaged over the period. Fewer shares means each one owns more of the company.
A falling count usually means buybacks. A rising one means stock pay, acquisitions paid in shares or new shares sold.
More on Sutro Biopharma
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.