TickerFacts.

Atara Biotherapeutics, Inc. (ATRA): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Stock splits: 1-for-25, first reflected in a filing dated 2024-08-12. Figures are as filed: per-share figures and share counts last reported before a split are on the old share basis, so changes and growth rates across a split are not shown. Splits are read from the filings' own restatements, so a share conversion in a merger or reorganization shows up the same way.

12.72M
Year ended 2025-12-31
101.99M2020-12-31: 73.97M2021-12-31: 93.67M2022-12-31: 101.99M2023-12-31: 4.24M2024-12-31: 7.49M2025-12-31: 12.72M12.72M
2020-12-31 Weighted Average Diluted Shares (shares) 2025-12-31

Paler bars were last filed before a stock split, on the old share basis.

Period endedWeighted Average Diluted SharesChange YoYSource filing
2025-12-3112.72M+69.8%2026-03-16, From 2025-01-01
2024-12-317.49M+76.8%2026-03-16, From 2024-01-01
2023-12-314.24Mn/c2025-03-07, From 2023-01-01
2022-12-31101.99M+8.9%2024-03-28, From 2022-01-01
2021-12-3193.67M+26.6%2023-02-08, From 2021-01-01
2020-12-3173.97Mn/a2023-02-08, From 2020-01-01