NASDAQ:ATRA | Shares Outstanding | Atara Biotherapeutics, Inc.

Complete source-backed shares outstanding history.

Available history
2013-12-31 to 2026-08-10
Data captured

Historical Shares Outstanding

DateShares outstanding
2026-08-1010,037,710
2026-06-309,443,000
2026-05-089,010,172
2026-03-318,512,000
2026-03-108,178,114
2025-12-317,324,000
2025-11-067,210,235
2025-09-307,210,000
2025-08-067,023,032
2025-06-306,978,000
2025-05-075,961,391
2025-03-315,924,000
2025-02-265,858,909
2024-12-315,859,000
2024-11-065,759,750
2024-09-305,740,000
2024-08-064,915,049
2024-06-304,904,000
2024-05-02120,416,138
2024-03-31120,325,000
2024-03-20119,359,230
2023-12-314,258,000
2023-10-27101,922,250
2023-09-30101,922,000
2023-08-01101,102,152
2023-06-30101,102,000
2023-05-0197,972,246
2023-03-3196,538,000
2023-01-3195,926,711
2022-12-3195,927,000
2022-11-0194,878,670
2022-09-3094,879,000
2022-07-2994,362,320
2022-06-3094,356,000
2022-04-2593,405,726
2022-03-3193,406,000
2022-02-1893,097,679
2021-12-3191,671,000
2021-10-2988,417,386
2021-09-3088,387,000
2021-07-3084,757,551
2021-06-3084,754,000
2021-04-2684,076,737
2021-03-3184,075,000
2021-02-1883,614,853
2020-12-3183,372,000
2020-10-3077,714,302
2020-09-3077,220,000
2020-07-3174,307,894
2020-06-3074,308,000
2020-04-3058,952,045
2020-03-3158,940,000
2020-02-1858,571,550
2019-12-3156,806,000
2019-10-3154,150,553
2019-09-3054,125,000
2019-07-3153,757,962
2019-06-3046,883,000
2019-04-3046,320,773
2019-03-3146,307,000
2019-02-1546,161,657
2018-12-3145,951,000
2018-10-3145,648,266
2018-09-3045,645,000
2018-07-2745,342,653
2018-06-3045,334,000
2018-04-3043,949,486
2018-03-3143,893,000
2018-02-1538,825,835
2017-12-3130,730,000
2017-10-3130,595,866
2017-09-3030,596
2017-07-3130,559,425
2017-06-3029,904
2017-04-3029,109,123
2017-03-3129,109
2017-02-1529,089,911
2016-12-3128,933,000
2016-10-3128,860,635
2016-09-3028,842,125
2016-07-3128,811,019
2016-06-3028,705,875
2016-04-2928,744,466
2016-03-3128,582,597
2016-02-1528,692,220
2015-12-3128,459,000
2015-10-3128,631,144
2015-09-3028,326,096
2015-07-3128,512,957
2015-06-3024,151,734
2015-04-3024,364,115
2015-03-3123,911,930
2015-02-1824,360,247
2014-12-3119,692,937
2014-11-0720,212,889
2014-09-301,509,712
2013-12-3112,003,891