SuperworthAtara Biotherapeutics shares outstanding ATRA
Diluted shares outstanding, averaged over each quarter, from 2013.
- Latest quarter, to Jun 30, 2026
- 15M
- On a year earlier
- +22.1%
- more shares
Atara Biotherapeutics had 15M diluted shares outstanding on average in Q2 FY26, the quarter to Jun 30, 2026.
That is 22.1% 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 | 13.6M | +27% |
| FY2024 | 10.7M | +147% |
| FY2023 | 4.3M | +5% |
| FY2022 | 4.1M | +6% |
| FY2021 | 3.9M | +14% |
| FY2020 | 3.4M | +48% |
| FY2019 | 2.3M | +26% |
| FY2018 | 1.8M | +49% |
| FY2017 | 1.2M | +6% |
| FY2016 | 1.2M | +2% |
| FY2015 | 1.1M | +2417% |
| FY2013 | 45.2K | 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 | 15M | +22% | |
| Q1 FY26 | 14.1M | +30% | |
| Q4 FY25 | 13.6M | +27% | |
| Q3 FY25 | 13.6M | +82% | |
| Q2 FY25 | 12.3M | +100% | |
| Q1 FY25 | 10.9M | +93% | |
| Q4 FY24 | 10.7M | +147% | |
| Q3 FY24 | 7.5M | +75% | |
| Q2 FY24 | 6.1M | +46% | |
| Q1 FY24 | 5.6M | +35% | |
| Q4 FY23 | 4.3M | +5% | |
| Q3 FY23 | 4.3M | +4% |
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 Atara Biotherapeutics
Valuation data, not investment advice. Prices as of . Reported figures come from the company's filings with the SEC.