Atara Biotherapeutics (ATRA) Shares Outstanding (2013 - 2026)

Atara Biotherapeutics' Shares Outstanding (Entity) history runs 14 years deep, the most recent figure standing at $14.1 million for Q1 2026.

• Quarterly Shares Outstanding (Entity) rose 30.82% year-over-year to $14.1 million in Q1 2026, while the trailing twelve-month figure through Mar 2026 was $14.1 million (up 30.82% YoY) and the FY2025 annual result came in at $12.5 million, up 67.52% from the prior year.
• Shares Outstanding (Entity) was $14.1 million for Q1 2026 at Atara Biotherapeutics, up from $12.5 million in the prior quarter.
• Across five years, Shares Outstanding (Entity) topped out at $14.1 million in Q1 2026 and bottomed at $3.7 million in Q1 2022.
• A 5-year average of $7.1 million and a median of $4.8 million in 2024 frame the typical range for Shares Outstanding (Entity).
• Annual changes were most pronounced in 2023 — Shares Outstanding (Entity) advanced 3.35% — and 2025, when it soared 123.64%.
• Atara Biotherapeutics' Shares Outstanding (Entity) stood at $3.8 million in 2022, then increased by 10.97% to $4.3 million in 2023, then jumped by 75.86% to $7.5 million in 2024, then jumped by 67.52% to $12.5 million in 2025, then advanced by 12.25% to $14.1 million in 2026.
• Business Quant data shows ATRA's Shares Outstanding (Entity) at $14.1 million in Q1 2026, $12.5 million in Q4 2025, and $13.6 million in Q3 2025.