Quick Answer
Atara Biotherapeutics, Inc. reported Shares Outstanding of 7.32 million shares for fiscal year 2025.
Atara Biotherapeutics, Inc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 7.32M | +25.0% |
| 2024 | 5.86M | +37.6% |
| 2023 | 4.26M | -95.6% |
| 2022 | 95.93M | +4.6% |
| 2021 | 91.67M | +10.0% |
| 2020 | 83.37M | +46.8% |
| 2019 | 56.81M | +23.6% |
| 2018 | 45.95M | +49.5% |
| 2017 | 30.73M | +6.2% |
| 2016 | 28.93M | +1.7% |
| 2015 | 28.46M | +44.5% |
| 2014 | 19.69M | +64.1% |
| 2013 | 12.00M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 7.21M | +25.6% | +3.3% |
| June 30, 2025 | 6.98M | +42.3% | +17.8% |
| March 31, 2025 | 5.92M | -95.1% | +1.1% |
| December 31, 2024 | 5.86M | +37.6% | +2.1% |
| September 30, 2024 | 5.74M | -94.4% | +17.0% |
| June 30, 2024 | 4.90M | -95.1% | -95.9% |
| March 31, 2024 | 120.33M | +24.6% | +2725.9% |
| December 31, 2023 | 4.26M | -95.6% | -95.8% |
- Atara Biotherapeutics, Inc. showed an increase of +25.0% in Shares Outstanding compared to the prior fiscal year.
- Over the 2013–2025 period, Atara Biotherapeutics, Inc.’s shares outstanding has declined by 39.0% (from 12.00 million shares to 7.32 million shares).
- The most recent figure is from Atara Biotherapeutics, Inc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on March 16, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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