Atara Biotherapeutics annual shares outstanding
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Atara Biotherapeutics Shares Outstanding History (ATRA)
Atara Biotherapeutics reported 7.3M shares outstanding at the end of fiscal 2025.
View full Atara Biotherapeutics company overviewAtara Biotherapeutics annual shares outstanding history
| Fiscal year | Period ended | Shares outstanding | Change | Growth |
|---|---|---|---|---|
| 2025 | 2025-12-31 | 7.3M | 1.5M | +25.00% |
| 2024 | 2024-12-31 | 5.9M | 1.6M | +37.60% |
| 2023 | 2023-12-31 | 4.3M | −91.7M | −95.56% |
| 2022 | 2022-12-31 | 95.9M | 4.3M | +4.64% |
| 2021 | 2021-12-31 | 91.7M | 8.3M | +9.95% |
| 2020 | 2020-12-31 | 83.4M | 26.6M | +46.77% |
| 2019 | 2019-12-31 | 56.8M | 10.9M | +23.62% |
| 2018 | 2018-12-31 | 46.0M | 15.2M | +49.53% |
| 2017 | 2017-12-31 | 30.7M | 1.8M | +6.21% |
| 2016 | 2016-12-31 | 28.9M | 474,000 | +1.67% |
| 2015 | 2015-12-31 | 28.5M | 8.8M | +44.51% |
| 2014 | 2014-12-31 | 19.7M | 7.7M | +64.05% |
| 2013 | 2013-12-31 | 12.0M | — | — |
Atara Biotherapeutics quarterly shares outstanding
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| Fiscal quarter | Period ended | Shares outstanding | Change | YoY change |
|---|---|---|---|---|
| Q2 2026 | 2026-06-30 | 9.4M | 2.5M | +35.33% |
| Q1 2026 | 2026-03-31 | 8.5M | 2.6M | +43.69% |
| Q4 2025 | 2025-12-31 | 7.3M | 1.5M | +25.00% |
| Q3 2025 | 2025-09-30 | 7.2M | 1.5M | +25.61% |
| Q2 2025 | 2025-06-30 | 7.0M | 2.1M | +42.29% |
| Q1 2025 | 2025-03-31 | 5.9M | −114.4M | −95.08% |
| Q4 2024 | 2024-12-31 | 5.9M | −100.6M | −94.50% |
| Q3 2024 | 2024-09-30 | 5.7M | −96.2M | −94.37% |
| Q2 2024 | 2024-06-30 | 4.9M | −96.2M | −95.15% |
| Q1 2024 | 2024-03-31 | 120.3M | 23.8M | +24.64% |
| Q4 2023 | 2023-12-31 | 106.4M | 10.5M | +10.97% |
| Q3 2023 | 2023-09-30 | 101.9M | 7.0M | +7.42% |
| Q2 2023 | 2023-06-30 | 101.1M | 6.7M | +7.15% |
| Q1 2023 | 2023-03-31 | 96.5M | 3.1M | +3.35% |
| Q4 2022 | 2022-12-31 | 95.9M | 4.3M | +4.64% |
| Q3 2022 | 2022-09-30 | 94.9M | 6.5M | +7.34% |
| Q2 2022 | 2022-06-30 | 94.4M | 9.6M | +11.33% |
| Q1 2022 | 2022-03-31 | 93.4M | 9.3M | +11.10% |
| Q4 2021 | 2021-12-31 | 91.7M | 8.3M | +9.95% |
| Q3 2021 | 2021-09-30 | 88.4M | 11.2M | +14.46% |
| Q2 2021 | 2021-06-30 | 84.8M | 10.4M | +14.06% |
| Q1 2021 | 2021-03-31 | 84.1M | 25.1M | +42.65% |
| Q4 2020 | 2020-12-31 | 83.4M | 26.6M | +46.77% |
| Q3 2020 | 2020-09-30 | 77.2M | 23.1M | +42.67% |
| Q2 2020 | 2020-06-30 | 74.3M | 27.4M | +58.50% |
| Q1 2020 | 2020-03-31 | 58.9M | 12.6M | +27.28% |
| Q4 2019 | 2019-12-31 | 56.8M | 10.9M | +23.62% |
| Q3 2019 | 2019-09-30 | 54.1M | 8.5M | +18.58% |
| Q2 2019 | 2019-06-30 | 46.9M | 1.5M | +3.42% |
| Q1 2019 | 2019-03-31 | 46.3M | 2.4M | +5.50% |
| Q4 2018 | 2018-12-31 | 46.0M | 15.2M | +49.53% |
| Q3 2018 | 2018-09-30 | 45.6M | 45.6M | +149086.17% |
| Q2 2018 | 2018-06-30 | 45.3M | 45.3M | +151498.45% |
| Q1 2018 | 2018-03-31 | 43.9M | 43.9M | +150688.42% |
| Q4 2017 | 2017-12-31 | 30.7M | 30.7M | +106110.90% |
| Q3 2017 | 2017-09-30 | 30,596 | −28.8M | −99.89% |
| Q2 2017 | 2017-06-30 | 29,904 | −28.7M | −99.90% |
| Q1 2017 | 2017-03-31 | 29,109 | −28.6M | −99.90% |
| Q4 2016 | 2016-12-31 | 28,933 | −28.4M | −99.90% |
| Q3 2016 | 2016-09-30 | 28.8M | 516,029 | +1.82% |
| Q2 2016 | 2016-06-30 | 28.7M | 4.6M | +18.86% |
| Q1 2016 | 2016-03-31 | 28.6M | 4.7M | +19.53% |
| Q4 2015 | 2015-12-31 | 28.5M | 8.8M | +44.51% |
| Q3 2015 | 2015-09-30 | 28.3M | 26.8M | +1776.26% |
| Q2 2015 | 2015-06-30 | 24.2M | 12.1M | +101.20% |
| Q1 2015 | 2015-03-31 | 23.9M | — | — |
| Q4 2014 | 2014-12-31 | 19.7M | — | — |
| Q3 2014 | 2014-09-30 | 1.5M | — | — |
| Q4 2013 | 2013-12-31 | 12.0M | — | — |
Atara Biotherapeutics shares outstanding trends
Over the last five reported fiscal years, Atara Biotherapeutics's shares outstanding moved from 83.4M to 7.3M, a change of −76.0M. The latest reported quarter, Q2 2026, shows 9.4M.
About the metric
What shares outstanding means
Shares outstanding is the number of common shares held by investors at a reporting-period end. The count can change because of stock issuance, repurchases, conversions, acquisitions, or stock splits.
Calculation and source
SEC-reported period-end shares
TickerStat displays period-end common shares from SEC filings and adjusts older values to the current share basis when SEC-reported stock-split conversion ratios are available. Values remain as reported when no split ratio is available. Fiscal periods can differ from calendar years, so exact period-end dates are included.
Review Atara Biotherapeutics filings at SEC.gov ↗