$ATRA: Atara Biotherapeutics, Inc. - Common Stock
2025-06-11 ATRA 2025-06-11 07:00:39 10.52 7.86 -1.40% ATRA 2025-06-11 08:00:52 10.31 8.24 -1.40% ATRA 2025-06-11 10:00:55 9.08 8.90 -1.30% ATRA 2025-06-11 11:00:42 9.11 8.93 -1.84% ATRA 2025-06-11 12:00:50 9.14 9.01 -0.86% ATRA 2025-06-11 13:00:40 9.17 9.01 -1.19% ATRA 2025-06-11 14:00:48 9.11 8.91 -0.86% ATRA 2025-06-11 15:00:41 8.94 8.83 -2.27% ATRA 2025-06-11 16:00:50 8.91 8.78 -2.27% ATRA 2025-06-11 16:15:16 8-K Sec report https://www.sec.gov/Archives/edgar/data/1604464/000119312525139150/0001193125-25-139150-index.htm 8-K - Atara Biotherapeutics, Inc. (0001604464) (Filer) ATRA 2025-06-11 17:00:40 9.66 8.01 -2.19% ATRA 2025-06-11 21:00:44 0.00 0.00 -2.19% 2025-06-12 ATRA 2025-06-12 05:00:45 10.14 7.58 -2.19% ATRA 2025-06-12 08:00:56 9.66 7.80 -2.19% ATRA 2025-06-12 09:00:44 9.66 7.51 -2.19% ATRA 2025-06-12 10:00:53 8.72 8.56 -3.40% ATRA 2025-06-12 11:00:41 8.87 8.74 -1.75% ATRA 2025-06-12 12:00:55 8.81 8.65 -2.19% ATRA 2025-06-12 13:00:39 8.85 8.63 -1.75% ATRA 2025-06-12 14:00:51 8.79 8.60 -2.74% ATRA 2025-06-12 15:00:43 8.87 8.57 -2.85% ATRA 2025-06-12 16:00:49 8.85 8.71 -1.97% ATRA 2025-06-12 17:00:44 9.66 7.51 -2.02% ATRA 2025-06-12 21:00:46 0.00 0.00 -2.02% 2025-06-13 ATRA 2025-06-13 12:00:50 8.73 8.60 -1.23% ATRA 2025-06-13 13:00:44 8.74 8.60 -0.34% ATRA 2025-06-13 14:00:55 8.94 8.75 1.12% ATRA 2025-06-13 15:00:45 8.81 8.65 -0.45% ATRA 2025-06-13 16:00:57 8.78 8.71 0.67% ATRA 2025-06-13 17:00:42 9.68 8.60 1.26% ATRA 2025-06-13 21:00:51 0.00 0.00 1.26% 2025-06-16 ATRA 2025-06-16 05:00:47 10.52 7.68 1.26% ATRA 2025-06-16 08:00:53 10.31 7.51 1.26% ATRA 2025-06-16 09:00:46 10.25 7.51 1.26% ATRA 2025-06-16 10:00:57 9.10 8.81 1.38% ATRA 2025-06-16 11:00:43 8.85 8.40 -2.41% ATRA 2025-06-16 12:00:52 8.72 8.53 -1.84% ATRA 2025-06-16 13:00:45 8.65 8.47 -3.90% ATRA 2025-06-16 14:00:55 8.66 8.44 -3.90% ATRA 2025-06-16 15:00:43 8.50 8.41 -4.71% ATRA 2025-06-16 16:00:54 8.61 8.43 -3.33% ATRA 2025-06-16 17:00:41 8.75 8.35 -2.72% ATRA 2025-06-16 21:00:42 0.00 0.00 -2.72% 2025-06-17 ATRA 2025-06-17 05:01:13 9.79 7.26 -2.72% ATRA 2025-06-17 08:00:52 9.66 7.51 -2.72% ATRA 2025-06-17 10:00:54 8.33 8.07 -2.83% ATRA 2025-06-17 11:00:41 8.32 8.23 -3.17% ATRA 2025-06-17 12:00:52 8.25 8.14 -4.88% ATRA 2025-06-17 13:00:45 8.18 8.05 -5.10% ATRA 2025-06-17 14:00:54 8.17 8.00 -5.33% ATRA 2025-06-17 15:00:47 8.12 8.02 -6.01% ATRA 2025-06-17 16:00:53 7.88 7.80 -8.16% ATRA 2025-06-17 17:00:41 7.86 6.18 -5.83% ATRA 2025-06-17 20:00:56 8.34 6.18 -5.83% ATRA 2025-06-17 21:00:42 0.00 0.00 -5.83% 2025-06-18 ATRA 2025-06-18 05:00:49 10.52 4.58 -5.83% ATRA 2025-06-18 08:00:55 9.39 6.13 -5.83% ATRA 2025-06-18 09:00:48 8.20 7.32 -5.83% ATRA 2025-06-18 10:00:55 8.07 7.83 1.52% ATRA 2025-06-18 11:00:48 8.10 7.81 3.03% ATRA 2025-06-18 12:00:50 8.28 8.09 3.61% ATRA 2025-06-18 13:00:42 8.20 8.01 3.50% ATRA 2025-06-18 14:00:56 8.02 7.95 2.56% ATRA 2025-06-18 15:00:49 8.10 7.96 2.45% ATRA 2025-06-18 16:01:00 8.06 8.02 3.26% ATRA 2025-06-18 17:00:45 9.76 6.18 5.90% ATRA 2025-06-18 18:00:53 9.66 6.41 6.54% ATRA 2025-06-18 21:00:48 0.00 0.00 6.54% 2025-06-20 ATRA 2025-06-20 05:00:38 9.39 6.81 6.54% ATRA 2025-06-20 08:00:50 10.18 7.13 6.54% ATRA 2025-06-20 09:00:39 10.31 7.13 6.54% ATRA 2025-06-20 10:00:53 7.97 7.76 -3.21% ATRA 2025-06-20 11:00:42 7.67 7.50 -5.90% ATRA 2025-06-20 12:00:51 7.69 7.60 -5.26% ATRA 2025-06-20 13:00:40 7.68 7.60 -4.74% ATRA 2025-06-20 14:00:56 7.72 7.65 -4.62% ATRA 2025-06-20 15:00:41 7.74 7.61 -3.08% ATRA 2025-06-20 16:03:02 20.00 7.61 -0.90% ATRA 2025-06-20 17:02:00 10.52 7.61 -0.87% ATRA 2025-06-20 21:00:42 0.00 0.00 -0.87% 2025-06-23 ATRA 2025-06-23 05:00:41 9.22 6.75 -0.87% ATRA 2025-06-23 08:02:00 10.52 6.18 -0.87% ATRA 2025-06-23 10:01:56 8.11 7.66 -1.37% ATRA 2025-06-23 11:00:43 7.97 7.80 0.25% ATRA 2025-06-23 12:00:49 7.97 7.80 -0.50% ATRA 2025-06-23 13:00:45 7.92 7.76 -2.00% ATRA 2025-06-23 14:00:55 7.94 7.80 -0.50% ATRA 2025-06-23 15:00:41 7.99 7.90 0.12% ATRA 2025-06-23 16:00:55 7.94 7.85 -0.50% ATRA 2025-06-23 17:00:43 9.00 7.53 -0.76% ATRA 2025-06-23 21:00:46 0.00 0.00 -0.76% 2025-06-24 ATRA 2025-06-24 05:00:41 8.55 6.87 -0.76% ATRA 2025-06-24 08:00:54 10.14 6.87 -0.76% ATRA 2025-06-24 10:00:52 8.00 7.71 1.51% ATRA 2025-06-24 11:00:43 8.17 7.92 1.64% ATRA 2025-06-24 12:00:54 8.30 8.01 5.29% ATRA 2025-06-24 13:00:51 8.22 8.01 2.77% ATRA 2025-06-24 14:00:53 8.18 7.91 2.77% ATRA 2025-06-24 16:00:59 8.14 8.01 3.40% ATRA 2025-06-24 17:00:47 8.25 7.50 2.41% ATRA 2025-06-24 21:00:42 0.00 0.00 2.41% 2025-06-25 ATRA 2025-06-25 05:00:45 9.31 6.94 2.41% ATRA 2025-06-25 08:00:55 9.31 7.55 2.41% ATRA 2025-06-25 09:00:45 9.22 7.55 2.41% ATRA 2025-06-25 10:00:57 8.22 7.84 2.41% ATRA 2025-06-25 11:00:45 8.14 7.73 -1.40% ATRA 2025-06-25 12:00:57 8.08 7.76 -0.13% ATRA 2025-06-25 13:00:44 8.03 7.73 -0.76% ATRA 2025-06-25 14:00:55 8.05 7.89 -0.89% ATRA 2025-06-25 15:00:42 8.14 8.03 0.25% ATRA 2025-06-25 16:00:53 8.14 8.01 0.89% ATRA 2025-06-25 17:00:45 8.95 7.75 -0.50% ATRA 2025-06-25 21:00:48 0.00 0.00 -0.50% 2025-06-26 ATRA 2025-06-26 05:00:46 10.52 4.58 -0.50% ATRA 2025-06-26 07:00:47 10.52 8.00 -0.50% ATRA 2025-06-26 08:00:54 8.95 8.00 -0.50% ATRA 2025-06-26 10:00:53 8.24 7.99 2.11% ATRA 2025-06-26 11:00:40 8.23 8.05 1.99% ATRA 2025-06-26 12:00:54 8.12 8.00 0.37% ATRA 2025-06-26 13:00:46 8.14 8.00 0.99% ATRA 2025-06-26 14:00:53 8.09 8.00 0.50% ATRA 2025-06-26 15:00:42 8.10 8.01 1.12% ATRA 2025-06-26 16:00:51 8.05 8.01 0.12% ATRA 2025-06-26 17:00:41 8.05 7.14 -0.75% ATRA 2025-06-26 21:00:52 0.00 0.00 -0.75% 2025-06-27 ATRA 2025-06-27 05:00:38 10.52 4.58 -0.75% ATRA 2025-06-27 08:00:43 8.79 7.14 -0.75% ATRA 2025-06-27 09:00:33 8.62 7.14 -0.75% ATRA 2025-06-27 10:00:39 8.09 7.81 -0.12% ATRA 2025-06-27 11:00:34 8.09 7.90 1.62% ATRA 2025-06-27 12:00:38 8.07 7.94 1.62% ATRA 2025-06-27 13:00:32 8.09 7.99 1.37% ATRA 2025-06-27 14:00:37 8.08 7.96 0.75% ATRA 2025-06-27 15:00:44 7.88 7.81 -0.62% ATRA 2025-06-27 16:00:36 7.97 7.83 -0.50% ATRA 2025-06-27 17:00:31 8.81 7.14 0.13% ATRA 2025-06-27 21:00:31 0.00 0.00 0.13% 2025-06-30 ATRA 2025-06-30 05:00:37 10.52 4.58 0.13% ATRA 2025-06-30 07:00:36 10.52 6.87 0.13% ATRA 2025-06-30 08:00:36 8.81 7.15 0.13% ATRA 2025-06-30 10:00:35 8.09 7.82 -0.25% ATRA 2025-06-30 11:00:34 7.92 7.82 -0.13% ATRA 2025-06-30 12:00:33 7.92 7.82 -0.63% ATRA 2025-06-30 13:00:35 7.94 7.86 -0.25% ATRA 2025-06-30 14:00:42 7.93 7.86 -0.63% ATRA 2025-06-30 15:00:34 7.91 7.86 -0.50% ATRA 2025-06-30 16:00:42 7.72 7.60 -4.28% ATRA 2025-06-30 17:00:38 8.64 7.50 -3.02% ATRA 2025-06-30 19:00:31 8.81 6.18 -3.02% ATRA 2025-06-30 21:00:30 0.00 0.00 -3.02% 2025-07-01 ATRA 2025-07-01 05:00:37 10.52 3.09 -3.02% ATRA 2025-07-01 06:00:36 7.72 3.09 -3.02% ATRA 2025-07-01 08:00:39 7.72 6.18 -3.02% ATRA 2025-07-01 10:00:32 7.82 7.60 -0.63% ATRA 2025-07-01 11:00:36 7.81 7.66 1.01% ATRA 2025-07-01 12:00:34 8.11 7.87 4.77% ATRA 2025-07-01 13:00:36 7.98 7.70 2.89% ATRA 2025-07-01 14:00:44 8.00 7.80 3.39% ATRA 2025-07-01 15:00:37 8.02 7.83 3.77% ATRA 2025-07-01 16:00:36 7.96 7.81 2.26% ATRA 2025-07-01 17:00:38 10.31 7.80 1.17% ATRA 2025-07-01 19:00:39 8.20 7.80 1.17% ATRA 2025-07-01 21:00:33 0.00 0.00 1.17% 2025-07-02 ATRA 2025-07-02 05:00:37 8.20 3.14 1.17% ATRA 2025-07-02 08:00:38 8.20 7.14 1.17% ATRA 2025-07-02 10:00:37 8.15 7.95 1.17% ATRA 2025-07-02 11:00:32 8.20 8.08 4.92% ATRA 2025-07-02 12:00:35 8.20 8.16 5.96% ATRA 2025-07-02 13:00:36 8.49 8.11 5.18% ATRA 2025-07-02 14:00:43 8.30 8.08 5.05% ATRA 2025-07-02 15:00:34 8.30 8.17 5.05% ATRA 2025-07-02 16:00:37 8.24 8.01 4.53% ATRA 2025-07-02 17:00:41 8.90 7.23 5.90% ATRA 2025-07-02 21:00:45 0.00 0.00 5.90% 2025-07-03 ATRA 2025-07-03 05:00:38 9.99 3.30 5.90% ATRA 2025-07-03 07:00:41 9.99 7.23 5.90% ATRA 2025-07-03 08:00:45 9.05 7.23 5.90% ATRA 2025-07-03 09:00:41 9.00 7.23 5.90% ATRA 2025-07-03 10:00:39 8.25 7.95 0.64% ATRA 2025-07-03 11:00:39 8.47 8.26 2.56% ATRA 2025-07-03 12:00:37 8.62 8.35 1.41% ATRA 2025-07-03 13:00:35 8.52 8.25 3.21% ATRA 2025-07-03 14:00:33 8.77 8.01 2.79% ATRA 2025-07-03 18:00:36 0.00 0.00 2.79% 2025-07-07 ATRA 2025-07-07 05:00:46 9.99 3.39 2.79% ATRA 2025-07-07 08:00:38 9.99 7.34 2.79% ATRA 2025-07-07 10:00:43 8.67 8.51 2.42% ATRA 2025-07-07 11:00:47 8.64 8.49 0.73% ATRA 2025-07-07 12:00:36 8.65 8.43 2.30% ATRA 2025-07-07 13:00:33 8.60 8.42 0.73% ATRA 2025-07-07 14:00:37 8.61 8.49 1.09% ATRA 2025-07-07 15:00:31 8.58 8.34 1.45% ATRA 2025-07-07 16:00:37 8.59 8.35 1.45% ATRA 2025-07-07 17:00:40 8.72 8.30 1.42% ATRA 2025-07-07 19:00:38 8.82 8.30 1.42% ATRA 2025-07-07 21:00:34 0.00 0.00 1.42% 2025-07-08 ATRA 2025-07-08 05:00:43 9.99 3.44 1.42% ATRA 2025-07-08 08:00:35 9.99 7.60 1.42% ATRA 2025-07-08 10:00:34 8.77 8.60 -0.12% ATRA 2025-07-08 11:00:34 9.00 8.75 2.95% ATRA 2025-07-08 12:00:34 8.98 8.75 3.90% ATRA 2025-07-08 13:00:37 9.14 8.94 4.72% ATRA 2025-07-08 14:00:36 9.05 8.89 4.72% ATRA 2025-07-08 15:00:39 9.06 8.94 5.67% ATRA 2025-07-08 16:00:40 9.35 9.18 8.62% ATRA 2025-07-08 17:00:43 9.35 7.79 8.04% ATRA 2025-07-08 20:00:43 9.35 7.80 8.04% ATRA 2025-07-08 21:00:40 0.00 0.00 8.04% 2025-07-09 ATRA 2025-07-09 05:00:37 9.99 3.71 8.04% ATRA 2025-07-09 08:00:38 9.99 9.17 8.04% ATRA 2025-07-09 10:00:37 9.33 8.93 0.00% ATRA 2025-07-09 11:00:37 9.34 9.06 -1.28% ATRA 2025-07-09 12:00:38 9.30 9.13 0.58% ATRA 2025-07-09 13:00:37 9.30 9.16 0.47% ATRA 2025-07-09 14:00:38 9.39 9.18 0.70% ATRA 2025-07-09 15:00:35 9.30 9.06 -0.47% ATRA 2025-07-09 16:00:41 9.45 9.17 1.75% ATRA 2025-07-09 17:00:39 9.99 7.78 -0.32% ATRA 2025-07-09 20:00:36 9.99 8.10 -0.32% ATRA 2025-07-09 21:00:36 0.00 0.00 -0.32% 2025-07-10 ATRA 2025-07-10 05:00:47 9.99 3.70 -0.32% ATRA 2025-07-10 08:00:41 9.99 7.32 -0.32% ATRA 2025-07-10 09:00:41 9.99 8.10 -0.32% ATRA 2025-07-10 10:00:39 9.47 9.25 2.48% ATRA 2025-07-10 11:00:38 9.50 9.26 2.91% ATRA 2025-07-10 12:00:32 9.60 9.26 2.27% ATRA 2025-07-10 13:00:36 9.60 9.31 2.16% ATRA 2025-07-10 14:00:38 9.50 9.38 2.27% ATRA 2025-07-10 15:00:37 9.50 9.35 2.16% ATRA 2025-07-10 16:00:40 9.53 9.47 3.24% ATRA 2025-07-10 17:00:41 9.99 8.90 2.71% ATRA 2025-07-10 19:00:38 9.99 7.55 2.71% ATRA 2025-07-10 21:00:37 0.00 0.00 2.71% 2025-07-11 ATRA 2025-07-11 05:00:53 9.99 3.82 2.71%