$SPRO: Spero Therapeutics, Inc. - Common Stock
2026-03-18 SPRO 2026-03-18 06:03:43 2.84 2.12 1.16% SPRO 2026-03-18 07:03:06 2.82 2.50 1.16% SPRO 2026-03-18 08:03:42 2.60 2.50 1.16% SPRO 2026-03-18 09:02:58 2.60 2.54 1.16% SPRO 2026-03-18 10:03:50 2.50 2.46 -3.86% SPRO 2026-03-18 11:04:45 2.48 2.46 -3.86% SPRO 2026-03-18 12:04:00 2.43 2.42 -6.18% SPRO 2026-03-18 13:04:18 2.46 2.44 -4.63% SPRO 2026-03-18 14:03:43 2.46 2.45 -4.63% SPRO 2026-03-18 16:03:45 2.58 2.42 -4.63% SPRO 2026-03-18 17:04:41 2.58 2.47 -0.39% SPRO 2026-03-18 18:04:47 2.52 2.42 -0.39% SPRO 2026-03-18 20:03:38 0.00 0.00 -0.39% 2026-03-19 SPRO 2026-03-19 04:04:07 2.55 2.25 -0.39% SPRO 2026-03-19 05:03:16 2.55 2.29 -0.39% SPRO 2026-03-19 08:04:14 2.46 2.41 -0.39% SPRO 2026-03-19 09:03:04 2.48 2.40 -2.33% SPRO 2026-03-19 10:03:50 2.48 2.42 0.00% SPRO 2026-03-19 11:03:31 2.48 2.47 1.16% SPRO 2026-03-19 12:03:42 2.46 2.44 0.00% SPRO 2026-03-19 13:03:01 2.41 2.40 -2.33% SPRO 2026-03-19 14:03:40 2.43 2.41 -1.55% SPRO 2026-03-19 15:03:09 2.46 2.45 0.00% SPRO 2026-03-19 16:03:35 2.48 2.37 1.16% SPRO 2026-03-19 17:03:20 2.53 2.40 1.22% SPRO 2026-03-19 18:03:49 2.48 2.40 1.22% SPRO 2026-03-19 19:03:11 2.48 2.37 1.22% SPRO 2026-03-19 20:03:50 0.00 0.00 1.22% 2026-03-20 SPRO 2026-03-20 04:03:47 2.76 2.20 1.22% SPRO 2026-03-20 05:03:02 2.76 2.42 1.22% SPRO 2026-03-20 07:03:06 2.51 2.42 1.22% SPRO 2026-03-20 08:03:42 2.51 2.43 1.22% SPRO 2026-03-20 09:02:58 2.48 2.43 1.22% SPRO 2026-03-20 10:03:41 2.44 2.42 -1.63% SPRO 2026-03-20 11:02:55 2.43 2.42 -1.63% SPRO 2026-03-20 13:02:57 2.41 2.40 -2.44% SPRO 2026-03-20 14:03:50 2.39 2.37 -3.25% SPRO 2026-03-20 15:03:07 2.39 2.37 -3.66% SPRO 2026-03-20 16:03:52 2.48 0.00 -4.07% SPRO 2026-03-20 17:03:03 2.41 2.29 -4.05% SPRO 2026-03-20 18:03:39 2.41 2.17 -4.05% SPRO 2026-03-20 20:03:52 0.00 0.00 -4.05% 2026-03-23 SPRO 2026-03-23 04:03:51 2.71 2.10 -4.05% SPRO 2026-03-23 05:02:57 2.76 2.12 -0.81% SPRO 2026-03-23 06:04:07 2.76 2.16 -0.81% SPRO 2026-03-23 07:02:50 2.55 2.12 -0.81% SPRO 2026-03-23 08:03:49 2.53 2.29 -0.81% SPRO 2026-03-23 09:02:57 2.50 2.29 -0.81% SPRO 2026-03-23 10:03:49 2.37 2.35 0.00% SPRO 2026-03-23 11:03:01 2.39 2.37 0.40% SPRO 2026-03-23 12:03:58 2.37 2.35 0.00% SPRO 2026-03-23 14:03:53 2.36 2.35 -0.40% SPRO 2026-03-23 15:03:00 2.38 2.37 0.40% SPRO 2026-03-23 16:04:14 2.38 2.33 -0.81% SPRO 2026-03-23 17:03:12 2.38 2.33 -0.84% SPRO 2026-03-23 20:04:55 0.00 0.00 -0.84% 2026-03-24 SPRO 2026-03-24 04:04:35 2.76 2.27 -0.84% SPRO 2026-03-24 06:04:41 2.60 2.27 -0.84% SPRO 2026-03-24 08:03:45 2.76 2.27 -0.84% SPRO 2026-03-24 09:02:49 2.57 2.27 -0.84% SPRO 2026-03-24 10:03:53 2.40 2.37 2.95% SPRO 2026-03-24 11:02:50 2.40 2.39 2.11% SPRO 2026-03-24 12:03:43 2.36 2.35 0.42% SPRO 2026-03-24 13:03:16 2.33 2.31 -0.84% SPRO 2026-03-24 14:03:58 2.34 2.33 -0.42% SPRO 2026-03-24 15:02:52 2.34 2.33 0.00% SPRO 2026-03-24 16:03:47 2.43 2.35 1.27% SPRO 2026-03-24 17:02:43 2.43 2.29 1.28% SPRO 2026-03-24 19:03:17 2.43 2.29 2.98% SPRO 2026-03-24 20:03:53 0.00 0.00 2.98% 2026-03-25 SPRO 2026-03-25 04:04:14 2.76 2.31 2.98% SPRO 2026-03-25 06:04:03 3.03 2.37 2.98% SPRO 2026-03-25 07:02:52 2.45 2.37 2.98% SPRO 2026-03-25 08:03:41 2.44 2.31 2.98% SPRO 2026-03-25 10:04:11 2.41 2.39 1.28% SPRO 2026-03-25 11:03:13 2.45 2.44 3.83% SPRO 2026-03-25 12:03:41 2.43 2.42 2.13% SPRO 2026-03-25 13:02:54 2.44 2.43 2.98% SPRO 2026-03-25 14:03:54 2.43 2.42 2.13% SPRO 2026-03-25 15:03:01 2.42 2.41 2.13% SPRO 2026-03-25 16:03:57 2.45 2.39 2.13% SPRO 2026-03-25 17:02:59 2.48 2.31 2.95% SPRO 2026-03-25 18:04:03 2.63 2.31 2.95% SPRO 2026-03-25 20:04:04 0.00 0.00 2.95% 2026-03-26 SPRO 2026-03-26 04:03:47 2.73 2.42 2.95% SPRO 2026-03-26 07:03:06 2.70 2.35 2.11% SPRO 2026-03-26 08:03:45 2.50 2.35 2.11% SPRO 2026-03-26 09:04:50 2.44 2.35 1.27% SPRO 2026-03-26 10:03:49 2.46 2.45 2.11% SPRO 2026-03-26 11:03:21 2.42 2.41 0.42% SPRO 2026-03-26 12:04:11 2.39 2.37 -0.84% SPRO 2026-03-26 13:03:53 2.39 2.37 -1.27% SPRO 2026-03-26 14:04:23 2.37 2.35 -1.69% SPRO 2026-03-26 15:03:29 2.36 2.35 -2.11% SPRO 2026-03-26 16:04:39 2.55 2.33 0.41% SPRO 2026-03-26 16:05:21 10-K Sec report https://www.sec.gov/Archives/edgar/data/1701108/000119312526126192/0001193125-26-126192-index.htm 10-K - Spero Therapeutics, Inc. (0001701108) (Filer) SPRO 2026-03-26 16:10:56 8-K Sec report https://www.sec.gov/Archives/edgar/data/1701108/000119312526126244/0001193125-26-126244-index.htm 8-K - Spero Therapeutics, Inc. (0001701108) (Filer) SPRO 2026-03-26 17:03:28 2.50 2.44 2.90% SPRO 2026-03-26 20:04:00 0.00 0.00 2.90% 2026-03-27 SPRO 2026-03-27 04:04:11 2.73 2.27 2.90% SPRO 2026-03-27 06:04:39 2.45 2.27 2.90% SPRO 2026-03-27 07:03:50 2.45 2.27 -3.32% SPRO 2026-03-27 08:03:59 2.45 2.27 1.24% SPRO 2026-03-27 09:02:54 2.55 2.27 2.90% SPRO 2026-03-27 10:04:32 2.34 2.33 -1.24% SPRO 2026-03-27 11:03:19 2.37 2.35 0.00% SPRO 2026-03-27 12:04:45 2.39 2.37 0.41% SPRO 2026-03-27 13:03:43 2.38 2.37 0.00% SPRO 2026-03-27 14:04:05 2.35 2.33 -0.83% SPRO 2026-03-27 16:04:10 2.33 2.29 -1.69% SPRO 2026-03-27 17:03:27 2.39 2.31 0.00% SPRO 2026-03-27 18:03:42 2.39 2.29 0.00% SPRO 2026-03-27 20:03:33 0.00 0.00 0.00% 2026-03-30 SPRO 2026-03-30 04:04:00 2.40 2.10 0.00% SPRO 2026-03-30 05:02:48 2.40 2.10 -0.84% SPRO 2026-03-30 07:02:44 2.39 2.33 -0.84% SPRO 2026-03-30 09:03:31 2.39 2.27 0.00% SPRO 2026-03-30 10:03:44 2.37 2.35 2.11% SPRO 2026-03-30 11:02:44 2.31 2.29 -0.84% SPRO 2026-03-30 13:02:46 2.29 2.27 -1.69% SPRO 2026-03-30 14:03:45 2.25 2.24 -3.38% SPRO 2026-03-30 15:02:50 2.28 2.25 -1.69% SPRO 2026-03-30 16:03:45 2.25 2.23 -3.43% SPRO 2026-03-30 18:03:32 2.48 2.23 -3.43% SPRO 2026-03-30 20:03:54 0.00 0.00 -3.43% 2026-03-31 SPRO 2026-03-31 04:04:30 2.71 2.10 -3.43% SPRO 2026-03-31 05:03:35 2.63 2.10 -3.43% SPRO 2026-03-31 08:03:45 2.63 2.24 -3.43% SPRO 2026-03-31 09:02:52 2.63 2.21 -3.43% SPRO 2026-03-31 10:03:42 2.25 2.23 0.00% SPRO 2026-03-31 11:02:56 2.27 2.25 1.29% SPRO 2026-03-31 12:03:57 2.30 2.29 3.00% SPRO 2026-03-31 13:02:55 2.31 2.29 3.00% SPRO 2026-03-31 14:03:55 2.34 2.33 4.29% SPRO 2026-03-31 16:04:03 2.40 2.31 4.46% SPRO 2026-03-31 18:03:51 2.40 2.31 3.57% SPRO 2026-03-31 19:03:01 2.40 2.25 3.57% SPRO 2026-03-31 20:04:07 0.00 0.00 4.91% 2026-04-01 SPRO 2026-04-01 04:04:04 2.60 2.15 4.91% SPRO 2026-04-01 05:03:11 2.60 2.08 4.91% SPRO 2026-04-01 06:04:02 2.60 2.10 4.91% SPRO 2026-04-01 07:03:09 2.55 2.08 4.91% SPRO 2026-04-01 08:03:55 2.55 2.29 4.91% SPRO 2026-04-01 09:03:32 3.00 2.31 4.91% SPRO 2026-04-01 10:04:22 2.40 2.39 3.13% SPRO 2026-04-01 11:03:00 2.46 2.45 5.80% SPRO 2026-04-01 14:03:44 2.44 2.43 4.46% SPRO 2026-04-01 15:02:52 2.45 2.44 5.36% SPRO 2026-04-01 16:03:53 2.48 2.35 5.13% SPRO 2026-04-01 17:02:52 2.48 2.17 5.13% SPRO 2026-04-01 18:03:51 2.48 2.27 5.13% SPRO 2026-04-01 20:03:51 0.00 0.00 5.13% 2026-04-02 SPRO 2026-04-02 04:03:43 2.63 2.08 5.13% SPRO 2026-04-02 05:02:45 2.60 2.27 -5.98% SPRO 2026-04-02 06:03:36 2.60 2.29 -5.98% SPRO 2026-04-02 07:02:35 2.60 2.35 -5.98% SPRO 2026-04-02 09:02:40 2.42 2.35 -5.98% SPRO 2026-04-02 10:03:39 2.40 2.39 -2.14% SPRO 2026-04-02 11:02:33 2.45 2.43 -0.43% SPRO 2026-04-02 12:03:36 2.43 2.42 -0.85% SPRO 2026-04-02 13:02:37 2.44 2.43 -0.43% SPRO 2026-04-02 14:03:33 2.43 2.42 -0.85% SPRO 2026-04-02 15:02:42 2.44 2.43 -0.43% SPRO 2026-04-02 16:03:32 2.64 2.35 -0.82% SPRO 2026-04-02 17:02:39 2.68 2.29 -0.82% SPRO 2026-04-02 18:03:37 2.68 2.27 -2.86% SPRO 2026-04-02 19:02:43 2.68 2.29 -2.86% SPRO 2026-04-02 20:03:39 0.00 0.00 -2.86% 2026-04-06 SPRO 2026-04-06 04:03:41 2.69 2.15 -2.86% SPRO 2026-04-06 05:02:35 2.43 2.15 -2.86% SPRO 2026-04-06 06:03:34 2.44 2.22 0.00% SPRO 2026-04-06 08:03:29 2.68 2.44 0.41% SPRO 2026-04-06 09:02:41 2.83 2.44 0.41% SPRO 2026-04-06 10:03:45 2.50 2.49 2.86% SPRO 2026-04-06 11:02:45 2.58 2.57 5.71% SPRO 2026-04-06 12:03:39 2.56 2.54 5.31% SPRO 2026-04-06 13:02:47 2.51 2.49 3.67% SPRO 2026-04-06 14:03:46 2.50 2.49 2.86% SPRO 2026-04-06 15:02:38 2.54 2.52 4.49% SPRO 2026-04-06 16:03:59 2.60 2.45 7.00% SPRO 2026-04-06 20:03:46 0.00 0.00 7.00% 2026-04-07 SPRO 2026-04-07 04:03:39 2.83 2.21 7.00% SPRO 2026-04-07 05:02:50 2.65 2.21 7.00% SPRO 2026-04-07 07:02:48 2.65 2.21 0.00% SPRO 2026-04-07 08:03:58 2.59 2.21 0.00% SPRO 2026-04-07 09:02:38 2.59 1.74 0.00% SPRO 2026-04-07 10:03:40 2.52 2.50 -3.70% SPRO 2026-04-07 11:02:45 2.63 2.62 1.23% SPRO 2026-04-07 12:03:50 2.65 2.64 2.06% SPRO 2026-04-07 14:03:42 2.66 2.65 2.47% SPRO 2026-04-07 15:02:46 2.67 2.66 2.47% SPRO 2026-04-07 16:03:40 2.69 2.67 2.68% SPRO 2026-04-07 17:02:41 2.69 2.50 3.45% SPRO 2026-04-07 18:03:24 2.67 2.50 3.45% SPRO 2026-04-07 19:02:41 2.69 2.50 3.45% SPRO 2026-04-07 20:03:38 0.00 0.00 3.45% 2026-04-08 SPRO 2026-04-08 04:03:41 2.91 2.21 3.45% SPRO 2026-04-08 06:03:44 2.96 2.21 3.45% SPRO 2026-04-08 07:02:58 2.69 2.60 1.15% SPRO 2026-04-08 08:03:45 2.71 2.61 1.92% SPRO 2026-04-08 09:02:49 2.75 2.61 1.92% SPRO 2026-04-08 10:03:56 2.65 2.64 -0.77% SPRO 2026-04-08 11:02:55 2.64 2.63 -0.77% SPRO 2026-04-08 12:03:42 2.74 2.73 3.07% SPRO 2026-04-08 13:02:50 2.72 2.71 1.92% SPRO 2026-04-08 14:03:43 2.75 2.74 3.45% SPRO 2026-04-08 15:04:08 2.73 2.72 2.68% SPRO 2026-04-08 16:03:44 2.72 2.68 1.87% SPRO 2026-04-08 17:02:41 2.72 2.61 1.87% SPRO 2026-04-08 18:03:38 2.73 2.61 1.87% SPRO 2026-04-08 20:03:42 0.00 0.00 1.87% 2026-04-09 SPRO 2026-04-09 04:03:55 2.98 2.21 1.87% SPRO 2026-04-09 06:03:44 2.98 2.42 1.87% SPRO 2026-04-09 07:02:55 2.75 2.46 1.87% SPRO 2026-04-09 09:02:41 2.75 2.42 1.87% SPRO 2026-04-09 10:03:47 2.69 2.68 -1.12% SPRO 2026-04-09 11:02:42 2.73 2.72 0.37% SPRO 2026-04-09 12:03:35 2.74 2.73 1.12% SPRO 2026-04-09 13:02:44 2.77 2.76 1.87% SPRO 2026-04-09 15:02:42 2.78 2.77 2.62% SPRO 2026-04-09 16:03:38 2.80 2.60 1.84% SPRO 2026-04-09 20:03:54 0.00 0.00 1.84% 2026-04-10 SPRO 2026-04-10 04:03:41 2.98 2.21 1.84% SPRO 2026-04-10 07:03:18 2.98 2.45 1.84% SPRO 2026-04-10 08:03:47 2.85 2.45 1.84% SPRO 2026-04-10 09:02:48 2.80 2.74 1.84% SPRO 2026-04-10 10:03:37 2.67 2.65 -4.04% SPRO 2026-04-10 11:02:44 2.64 2.63 -4.78% SPRO 2026-04-10 12:05:24 2.70 2.68 -2.57% SPRO 2026-04-10 13:02:54 2.66 2.65 -4.04% SPRO 2026-04-10 14:03:45 2.67 2.66 -3.68% SPRO 2026-04-10 15:02:42 2.68 2.67 -3.31% SPRO 2026-04-10 16:03:42 2.83 2.63 -3.60% SPRO 2026-04-10 17:02:41 2.75 2.68 -3.60% SPRO 2026-04-10 18:03:40 2.73 2.67 -3.24% SPRO 2026-04-10 20:03:56 0.00 0.00 -3.24% 2026-04-13 SPRO 2026-04-13 04:03:44 2.89 2.35 -3.24% SPRO 2026-04-13 07:02:39 2.89 2.65 -3.24% SPRO 2026-04-13 09:02:37 3.41 2.65 -3.24% SPRO 2026-04-13 10:03:35 2.85 2.82 6.12% SPRO 2026-04-13 11:02:38 2.76 2.75 3.60% SPRO 2026-04-13 12:03:37 2.73 2.72 2.16% SPRO 2026-04-13 13:02:46 2.75 2.74 3.24% SPRO 2026-04-13 15:02:47 2.76 2.75 3.60% SPRO 2026-04-13 16:03:47 2.82 2.76 4.49% SPRO 2026-04-13 17:02:47 2.82 2.80 4.49% SPRO 2026-04-13 18:03:36 2.81 2.65 5.24% SPRO 2026-04-13 19:02:48 2.83 2.65 5.24% SPRO 2026-04-13 20:04:08 0.00 0.00 5.24% 2026-04-14 SPRO 2026-04-14 04:03:36 3.07 2.54 5.24% SPRO 2026-04-14 05:02:37 2.89 2.54 5.24% SPRO 2026-04-14 07:02:49 2.88 2.54 5.24% SPRO 2026-04-14 09:02:40 2.88 2.82 5.24% SPRO 2026-04-14 10:03:39 2.80 2.79 1.12% SPRO 2026-04-14 11:02:54 2.85 2.84 3.00% SPRO 2026-04-14 12:03:40 2.80 2.79 1.12% SPRO 2026-04-14 13:02:55 2.80 2.78 0.75% SPRO 2026-04-14 14:03:39 2.79 2.78 0.75% SPRO 2026-04-14 15:02:44 2.80 2.79 1.12% SPRO 2026-04-14 16:03:29 2.78 2.75 0.36% SPRO 2026-04-14 17:02:40 2.85 2.65 0.36% SPRO 2026-04-14 20:03:49 0.00 0.00 0.36% 2026-04-15 SPRO 2026-04-15 04:03:41 3.09 2.47 0.36% SPRO 2026-04-15 05:02:37 3.06 2.47 0.36% SPRO 2026-04-15 06:03:37 3.06 2.64 0.36% SPRO 2026-04-15 07:02:38 2.82 2.76 0.36% SPRO 2026-04-15 09:02:40 2.82 2.74 0.36% SPRO 2026-04-15 10:08:06 2.77 2.76 -0.36% SPRO 2026-04-15 11:02:47 2.76 2.74 -0.36% SPRO 2026-04-15 12:03:45 2.70 2.69 -2.88% SPRO 2026-04-15 13:02:46 2.67 2.66 -3.60% SPRO 2026-04-15 14:03:34 2.66 2.65 -3.96% SPRO 2026-04-15 16:03:47 2.69 2.37 -4.68% SPRO 2026-04-15 18:03:40 2.81 2.37 -4.68% SPRO 2026-04-15 19:03:01 2.81 2.64 -4.68% SPRO 2026-04-15 20:03:48 0.00 0.00 -4.68% 2026-04-16 SPRO 2026-04-16 04:04:01 2.91 2.35 -4.68% SPRO 2026-04-16 07:03:11 2.69 2.62 -4.68% SPRO 2026-04-16 08:03:43 2.71 2.62 -4.68% SPRO 2026-04-16 09:02:45 2.71 2.50 -0.72% SPRO 2026-04-16 10:03:32 2.68 2.67 1.08% SPRO 2026-04-16 11:02:52 2.68 2.67 1.80% SPRO 2026-04-16 13:02:42 2.66 2.65 0.36% SPRO 2026-04-16 14:03:35 2.69 2.68 1.80% SPRO 2026-04-16 15:03:06 2.68 2.67 1.08% SPRO 2026-04-16 16:03:37 2.70 2.57 1.89% SPRO 2026-04-16 18:03:45 2.68 2.57 1.89% SPRO 2026-04-16 20:04:08 0.00 0.00 1.89% 2026-04-17 SPRO 2026-04-17 04:03:51 2.94 2.46 1.89%