Atara Biotherapeutics (ATRA) Shares Outstanding (Diluted) (2020 - 2026)
Atara Biotherapeutics (ATRA) posted Shares Outstanding (Diluted) of 15.03 million for Q2 2026, up 22.1% from 12.31 million a year earlier and up 6.8% from the prior quarter.
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Analysis
Atara Biotherapeutics (ATRA) Shares Outstanding (Diluted) (2020 - 2026) Analysis & Trends
For FY2025, Atara Biotherapeutics' Shares Outstanding (Diluted) came in at 12.72 million, up 69.8% from FY2024.
- Annual Shares Outstanding (Diluted) has increased for five consecutive years, with a five-year compound annual growth rate of 33.9% (FY2020 to FY2025).
- In prior years, Atara Biotherapeutics' Shares Outstanding (Diluted) was 7.49 million in FY2024 (+76.8%), 4.24 million in FY2023 (+3.8%), 4.08 million in FY2022 (+8.9%) and 3.75 million in FY2021 (+26.6%).
- The Q2 2026 figure stands as the highest quarterly Shares Outstanding (Diluted) in data going back to Q4 2020.
- On a year-over-year basis, Shares Outstanding (Diluted) has increased in each of the last 19 quarters, with growth averaging 68.6% over the last eight quarters.
- The year-over-year growth in Shares Outstanding (Diluted) has ranged between 3.2% (Q2 2023) and 100.4% (Q2 2025) over the last five years.
- According to Business Quant data, Shares Outstanding (Diluted) for the three prior quarters was 14.08 million (Q1 2026), 12.72 million (Q4 2025) and 13.56 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Dil.) (Qtr) |
|---|---|---|---|---|---|
| 1 | Eli Lilly | 1,230.11 Bn | 1,198.70 Bn | 19.71 Bn | 893.70 Mn |
| 2 | Johnson & Johnson | 644.39 Bn | 564.25 Bn | 17.30 Bn | 2.45 Bn |
| 3 | AbbVie | 503.52 Bn | 476.68 Bn | 12.70 Bn | 1.77 Bn |
| 4 | Merck | 363.29 Bn | 317.72 Bn | 12.21 Bn | 2.47 Bn |
| 5 | Novartis Ag | 298.23 Bn | 262.62 Bn | 11.24 Bn | 1.96 Bn |
| 6 | Astrazeneca | 267.53 Bn | 241.29 Bn | 12.86 Bn | 1.56 Bn |
| 7 | Amgen | 241.80 Bn | 197.20 Bn | 7.24 Bn | 544.00 Mn |
| 8 | Gilead Sciences | 195.07 Bn | 169.19 Bn | 6.22 Bn | 1.24 Bn |
| 9 | Pfizer | 173.33 Bn | 120.28 Bn | 10.94 Bn | 5.70 Bn |
| 10 | Atara Biotherapeutics | 141.76 Mn | 131.86 Mn | 439,000.00 | 15.03 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 15.03 Mn |
| Mar 31, 2026 | 14.08 Mn |
| Dec 31, 2025 | 12.72 Mn |
| Sep 30, 2025 | 13.56 Mn |
| Jun 30, 2025 | 12.31 Mn |
| Mar 31, 2025 | 10.85 Mn |
| Dec 31, 2024 | 7.49 Mn |
| Sep 30, 2024 | 7.47 Mn |
| Jun 30, 2024 | 6.14 Mn |
| Mar 31, 2024 | 5.62 Mn |
| Dec 31, 2023 | 4.24 Mn |
| Sep 30, 2023 | 4.26 Mn |
| Jun 30, 2023 | 4.20 Mn |
| Mar 31, 2023 | 4.16 Mn |
| Dec 31, 2022 | 4.08 Mn |
| Sep 30, 2022 | 4.10 Mn |
| Jun 30, 2022 | 4.07 Mn |
| Mar 31, 2022 | 4.03 Mn |
| Dec 31, 2021 | 3.75 Mn |
| Sep 30, 2021 | 3.74 Mn |
API Access
Atara Biotherapeutics Shares Outstanding (Diluted) API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=shares-outstanding-diluted&ticker=ATRA&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "shares-outstanding-diluted", "ticker": "ATRA", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=shares-outstanding-diluted&ticker=ATRA&period=max&api_key=YOUR_API_KEY");
const data = await res.json();