Atara Biotherapeutics (ATRA) - Shares outstanding

Number of shares outstanding as of December 2025 : 12,197,000

According to Atara Biotherapeutics's latest financial reports and stock price the company's current number of shares outstanding is 12,197,000. At the end of 2025 the company had 12,197,000 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Atara Biotherapeutics from 2024 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	12.19 M	14.1%
2024	10.69 M

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
Agenus AGEN	31,886,000	161.42%	🇺🇸 USA
Affimed AFMD	16,100,185	32.00%	🇩🇪 Germany
ImmunoGen IMGN	273,341,000	2,141.05%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Number of shares outstanding for Atara Biotherapeutics (ATRA)

Number of shares outstanding as of December 2025 : 12,197,000