$SPRO: Spero Therapeutics, Inc. - Common Stock
2026-01-06 SPRO 2026-01-06 20:03:23 2.51 2.46 3.70% SPRO 2026-01-06 21:05:01 0.00 0.00 3.70% 2026-01-07 SPRO 2026-01-07 05:02:27 3.97 1.01 3.70% SPRO 2026-01-07 06:03:20 2.76 2.04 3.70% SPRO 2026-01-07 08:03:18 2.76 2.10 3.70% SPRO 2026-01-07 09:02:28 2.73 2.12 3.70% SPRO 2026-01-07 10:03:21 2.73 2.19 3.70% SPRO 2026-01-07 11:02:26 2.56 2.54 2.47% SPRO 2026-01-07 12:03:18 2.60 2.59 4.12% SPRO 2026-01-07 15:02:27 2.61 2.60 4.12% SPRO 2026-01-07 16:03:23 2.65 2.64 6.17% SPRO 2026-01-07 17:02:30 2.65 2.57 4.12% SPRO 2026-01-07 18:03:18 2.65 2.27 3.98% SPRO 2026-01-07 19:02:49 2.69 2.35 2.39% SPRO 2026-01-07 21:06:33 0.00 0.00 2.39% 2026-01-08 SPRO 2026-01-08 05:02:34 4.15 1.10 2.39% SPRO 2026-01-08 06:03:20 2.93 2.29 2.39% SPRO 2026-01-08 11:02:33 2.54 2.52 -2.39% SPRO 2026-01-08 13:02:33 2.54 2.52 -3.19% SPRO 2026-01-08 14:03:26 2.55 2.54 -1.59% SPRO 2026-01-08 15:02:36 2.52 2.50 -3.19% SPRO 2026-01-08 16:03:26 2.55 2.54 -1.59% SPRO 2026-01-08 17:02:33 2.60 2.52 -1.20% SPRO 2026-01-08 18:03:21 2.60 2.27 -1.15% SPRO 2026-01-08 21:06:23 0.00 0.00 -1.15% 2026-01-09 SPRO 2026-01-09 05:02:29 4.05 1.04 -1.15% SPRO 2026-01-09 06:03:13 2.82 2.15 -1.15% SPRO 2026-01-09 08:03:07 2.82 2.25 -1.15% SPRO 2026-01-09 10:03:11 2.72 2.25 -1.15% SPRO 2026-01-09 11:02:16 2.54 2.52 -0.77% SPRO 2026-01-09 12:03:08 2.56 2.54 0.00% SPRO 2026-01-09 13:02:24 2.57 2.56 0.00% SPRO 2026-01-09 14:03:09 2.56 2.54 0.00% SPRO 2026-01-09 15:02:22 2.55 2.54 -0.38% SPRO 2026-01-09 16:03:11 2.54 2.52 -0.77% SPRO 2026-01-09 17:02:17 2.56 2.52 -0.38% SPRO 2026-01-09 18:03:01 2.56 2.50 -0.39% SPRO 2026-01-09 19:02:39 2.57 2.27 -2.33% SPRO 2026-01-09 21:06:05 0.00 0.00 -2.33% 2026-01-12 SPRO 2026-01-12 05:02:33 4.05 1.02 -2.33% SPRO 2026-01-12 06:03:13 2.82 2.08 -2.33% SPRO 2026-01-12 07:02:14 2.82 2.56 0.78% SPRO 2026-01-12 08:03:12 2.82 2.59 1.95% SPRO 2026-01-12 09:02:16 2.60 2.50 1.95% SPRO 2026-01-12 11:02:23 2.53 2.52 -0.39% SPRO 2026-01-12 12:03:12 2.51 2.50 -1.17% SPRO 2026-01-12 13:02:16 2.52 2.50 -0.78% SPRO 2026-01-12 14:03:08 2.50 2.49 -1.56% SPRO 2026-01-12 15:02:23 2.52 2.50 -0.78% SPRO 2026-01-12 16:03:16 2.51 2.50 -1.17% SPRO 2026-01-12 17:02:18 2.55 2.25 -1.17% SPRO 2026-01-12 18:03:14 2.59 2.27 -1.18% SPRO 2026-01-12 21:04:41 0.00 0.00 -1.18% 2026-01-13 SPRO 2026-01-13 05:02:20 4.01 1.02 -1.18% SPRO 2026-01-13 06:03:15 2.72 2.10 -1.18% SPRO 2026-01-13 08:03:11 2.72 2.29 -1.18% SPRO 2026-01-13 10:03:09 2.58 2.50 -1.18% SPRO 2026-01-13 11:02:16 2.50 2.49 0.00% SPRO 2026-01-13 12:03:10 2.50 2.48 -0.39% SPRO 2026-01-13 13:02:20 2.50 2.48 0.00% SPRO 2026-01-13 14:03:14 2.48 2.46 -1.57% SPRO 2026-01-13 15:02:22 2.48 2.46 -0.78% SPRO 2026-01-13 16:03:14 2.48 2.46 -1.18% SPRO 2026-01-13 17:02:22 2.50 2.42 -1.96% SPRO 2026-01-13 18:03:10 2.50 2.40 -1.99% SPRO 2026-01-13 20:03:13 2.50 2.45 -1.99% SPRO 2026-01-13 21:04:34 0.00 0.00 -1.99% 2026-01-14 SPRO 2026-01-14 05:02:28 3.92 1.02 -1.99% SPRO 2026-01-14 06:03:11 2.82 2.10 -1.99% SPRO 2026-01-14 08:03:08 2.82 2.20 -1.99% SPRO 2026-01-14 09:02:18 2.82 2.25 -1.99% SPRO 2026-01-14 10:03:09 2.72 2.25 -1.99% SPRO 2026-01-14 11:02:16 2.44 2.43 -0.40% SPRO 2026-01-14 12:03:09 2.51 2.50 1.99% SPRO 2026-01-14 13:02:19 2.50 2.49 1.99% SPRO 2026-01-14 16:03:11 2.52 2.50 2.79% SPRO 2026-01-14 17:02:18 2.60 2.50 2.79% SPRO 2026-01-14 18:03:24 2.60 2.40 2.04% SPRO 2026-01-14 21:03:23 0.00 0.00 2.04% 2026-01-15 SPRO 2026-01-15 05:02:13 3.95 1.02 2.04% SPRO 2026-01-15 06:03:11 2.82 2.10 2.04% SPRO 2026-01-15 08:03:16 2.59 2.20 2.04% SPRO 2026-01-15 09:02:22 2.59 2.43 2.04% SPRO 2026-01-15 10:03:17 2.72 2.43 2.04% SPRO 2026-01-15 11:02:18 2.46 2.45 -1.63% SPRO 2026-01-15 12:03:13 2.44 2.43 -2.45% SPRO 2026-01-15 13:02:19 2.42 2.41 -3.27% SPRO 2026-01-15 14:03:15 2.42 2.41 -3.67% SPRO 2026-01-15 15:02:19 2.42 2.41 -3.27% SPRO 2026-01-15 16:03:17 2.41 2.40 -4.08% SPRO 2026-01-15 17:02:22 2.44 2.37 -4.08% SPRO 2026-01-15 18:03:09 2.44 2.37 -3.98% SPRO 2026-01-15 21:04:24 0.00 0.00 -3.98% 2026-01-16 SPRO 2026-01-16 05:02:28 3.83 1.05 -3.98% SPRO 2026-01-16 06:03:18 2.82 2.20 -3.98% SPRO 2026-01-16 08:03:22 2.82 2.29 -3.98% SPRO 2026-01-16 10:03:12 2.62 2.29 -3.98% SPRO 2026-01-16 11:02:20 2.37 2.35 -1.59% SPRO 2026-01-16 12:03:11 2.40 2.39 0.00% SPRO 2026-01-16 15:02:31 2.41 2.40 0.80% SPRO 2026-01-16 17:02:23 2.55 0.00 0.80% SPRO 2026-01-16 18:03:09 2.53 2.17 0.83% SPRO 2026-01-16 20:03:12 2.53 2.29 0.83% SPRO 2026-01-16 21:05:30 0.00 0.00 0.83% 2026-01-20 SPRO 2026-01-20 05:02:24 3.74 1.02 0.83% SPRO 2026-01-20 06:03:20 2.35 2.29 0.83% SPRO 2026-01-20 07:02:17 2.61 2.29 -4.17% SPRO 2026-01-20 08:03:15 2.41 2.31 -4.17% SPRO 2026-01-20 09:02:21 2.41 2.35 -4.17% SPRO 2026-01-20 10:03:14 2.41 2.35 -1.67% SPRO 2026-01-20 11:02:19 2.34 2.33 -3.33% SPRO 2026-01-20 12:03:11 2.38 2.37 -1.25% SPRO 2026-01-20 13:02:22 2.39 2.37 -0.83% SPRO 2026-01-20 14:03:19 2.38 2.37 -1.25% SPRO 2026-01-20 15:02:27 2.36 2.35 -2.08% SPRO 2026-01-20 16:03:19 2.35 2.33 -2.50% SPRO 2026-01-20 17:02:30 2.82 2.27 -1.25% SPRO 2026-01-20 18:03:13 2.82 2.27 -1.24% SPRO 2026-01-20 21:04:11 0.00 0.00 -1.24% 2026-01-21 SPRO 2026-01-21 05:02:29 3.80 1.02 -1.24% SPRO 2026-01-21 06:03:22 2.82 2.10 -1.24% SPRO 2026-01-21 09:02:21 2.65 2.31 -1.24% SPRO 2026-01-21 10:03:16 2.70 2.12 -1.24% SPRO 2026-01-21 11:02:21 2.40 2.39 1.24% SPRO 2026-01-21 12:03:11 2.39 2.37 0.83% SPRO 2026-01-21 14:03:32 2.35 2.33 -0.83% SPRO 2026-01-21 15:02:22 2.34 2.33 -1.66% SPRO 2026-01-21 16:03:19 2.37 2.35 -0.83% SPRO 2026-01-21 17:02:22 2.39 2.10 -0.83% SPRO 2026-01-21 18:03:13 2.39 2.12 -0.84% SPRO 2026-01-21 21:05:25 0.00 0.00 -0.84% 2026-01-22 SPRO 2026-01-22 05:02:22 3.77 1.02 -0.84% SPRO 2026-01-22 06:03:14 2.56 2.10 -0.84% SPRO 2026-01-22 08:03:14 2.56 2.31 -0.84% SPRO 2026-01-22 09:02:16 2.56 2.10 -0.84% SPRO 2026-01-22 10:03:15 2.56 2.12 -0.84% SPRO 2026-01-22 11:02:17 2.39 2.37 1.68% SPRO 2026-01-22 12:03:10 2.44 2.43 3.78% SPRO 2026-01-22 13:02:25 2.42 2.41 2.94% SPRO 2026-01-22 14:03:23 2.46 2.45 4.20% SPRO 2026-01-22 15:02:24 2.43 2.42 3.36% SPRO 2026-01-22 16:03:18 2.43 2.42 2.94% SPRO 2026-01-22 17:02:11 2.72 2.41 4.20% SPRO 2026-01-22 18:03:16 2.72 2.12 4.24% SPRO 2026-01-22 21:03:35 0.00 0.00 4.24% 2026-01-23 SPRO 2026-01-23 05:02:25 3.79 1.02 4.24% SPRO 2026-01-23 06:03:23 2.68 2.23 4.24% SPRO 2026-01-23 07:02:32 2.93 2.27 4.24% SPRO 2026-01-23 08:03:15 2.93 2.42 4.24% SPRO 2026-01-23 09:02:25 2.93 2.43 4.24% SPRO 2026-01-23 10:03:16 2.81 2.23 4.24% SPRO 2026-01-23 11:02:26 2.44 2.43 -0.42% SPRO 2026-01-23 12:03:10 2.45 2.44 0.00% SPRO 2026-01-23 13:02:27 2.44 2.43 -0.85% SPRO 2026-01-23 14:03:11 2.46 2.45 0.00% SPRO 2026-01-23 15:02:31 2.44 2.43 -0.42% SPRO 2026-01-23 16:03:16 2.43 2.42 -0.85% SPRO 2026-01-23 17:02:19 2.48 2.37 -0.42% SPRO 2026-01-23 18:03:21 2.48 2.29 -0.41% SPRO 2026-01-23 21:04:08 0.00 0.00 -0.41% 2026-01-26 SPRO 2026-01-26 05:02:23 3.79 1.02 -0.41% SPRO 2026-01-26 06:03:15 2.63 2.10 -0.41% SPRO 2026-01-26 08:03:13 2.64 2.31 -0.41% SPRO 2026-01-26 09:02:21 2.64 2.35 -0.41% SPRO 2026-01-26 11:02:17 2.39 2.37 -2.45% SPRO 2026-01-26 12:03:12 2.40 2.39 -1.63% SPRO 2026-01-26 13:02:15 2.43 2.42 0.00% SPRO 2026-01-26 14:03:23 2.44 2.43 0.00% SPRO 2026-01-26 16:03:20 2.45 2.44 0.82% SPRO 2026-01-26 17:02:17 2.45 2.35 0.82% SPRO 2026-01-26 18:03:11 2.45 2.29 0.82% SPRO 2026-01-26 19:02:32 2.50 2.29 0.82% SPRO 2026-01-26 21:05:10 0.00 0.00 0.82% 2026-01-27 SPRO 2026-01-27 05:02:20 3.92 1.03 0.82% SPRO 2026-01-27 06:03:26 2.93 2.14 0.82% SPRO 2026-01-27 08:03:16 2.45 2.14 0.82% SPRO 2026-01-27 09:02:20 2.70 2.33 0.82% SPRO 2026-01-27 10:03:23 2.45 2.17 -3.28% SPRO 2026-01-27 11:02:24 2.44 2.43 -0.41% SPRO 2026-01-27 12:03:15 2.39 2.37 -2.46% SPRO 2026-01-27 14:03:13 2.36 2.35 -4.10% SPRO 2026-01-27 16:03:10 2.37 2.35 -3.69% SPRO 2026-01-27 17:02:20 2.46 2.27 -3.28% SPRO 2026-01-27 18:03:12 2.43 2.27 -3.27% SPRO 2026-01-27 21:03:41 0.00 0.00 -3.27% SPRO 2026-01-27 22:05:59 2.43 2.27 -3.27% 2026-01-28 SPRO 2026-01-28 05:02:28 3.79 1.02 -3.27% SPRO 2026-01-28 06:03:16 2.65 2.17 -3.27% SPRO 2026-01-28 08:03:12 2.57 2.17 -3.27% SPRO 2026-01-28 10:03:08 2.41 2.35 2.04% SPRO 2026-01-28 11:02:17 2.29 2.27 -3.27% SPRO 2026-01-28 12:03:11 2.30 2.29 -3.27% SPRO 2026-01-28 13:02:15 2.29 2.27 -3.27% SPRO 2026-01-28 15:02:18 2.28 2.27 -4.08% SPRO 2026-01-28 16:03:32 2.27 2.25 -4.08% SPRO 2026-01-28 17:02:34 3.29 2.21 -5.71% SPRO 2026-01-28 18:03:22 2.31 2.21 -5.91% SPRO 2026-01-28 19:02:26 2.65 2.21 -5.91% SPRO 2026-01-28 20:03:15 2.65 2.27 -5.91% SPRO 2026-01-28 21:04:57 0.00 0.00 -5.91% 2026-01-29 SPRO 2026-01-29 05:02:21 3.56 2.15 -5.91% SPRO 2026-01-29 06:03:21 2.93 2.15 -5.91% SPRO 2026-01-29 08:03:12 2.71 2.15 -5.91% SPRO 2026-01-29 11:02:18 2.27 2.25 2.11% SPRO 2026-01-29 12:03:15 2.23 2.22 0.00% SPRO 2026-01-29 13:02:25 2.25 2.24 1.27% SPRO 2026-01-29 14:03:15 2.25 2.23 0.84% SPRO 2026-01-29 15:02:49 2.26 2.25 1.27% SPRO 2026-01-29 17:02:25 3.19 2.21 1.27% SPRO 2026-01-29 18:03:24 2.30 2.21 1.35% SPRO 2026-01-29 19:02:22 2.30 2.24 1.35% SPRO 2026-01-29 21:04:19 0.00 0.00 1.35% 2026-01-30 SPRO 2026-01-30 05:02:22 3.59 0.96 1.35% SPRO 2026-01-30 06:03:22 2.93 2.02 1.35% SPRO 2026-01-30 08:03:21 2.44 2.20 1.35% SPRO 2026-01-30 10:03:15 2.44 2.21 1.35% SPRO 2026-01-30 11:02:21 2.25 2.23 -0.90% SPRO 2026-01-30 12:03:12 2.23 2.21 -1.79% SPRO 2026-01-30 13:02:24 2.21 2.20 -1.79% SPRO 2026-01-30 14:03:10 2.23 2.22 -0.90% SPRO 2026-01-30 16:03:08 2.23 2.21 -0.90% SPRO 2026-01-30 17:02:27 2.25 2.18 -2.69% SPRO 2026-01-30 18:01:11 8-K Sec report https://www.sec.gov/Archives/edgar/data/1701108/000119312526032004/0001193125-26-032004-index.htm 8-K - Spero Therapeutics, Inc. (0001701108) (Filer) SPRO 2026-01-30 18:03:14 2.25 2.18 -2.67% SPRO 2026-01-30 19:02:22 2.25 2.19 -2.67% SPRO 2026-01-30 21:05:54 0.00 0.00 -2.67% 2026-02-02 SPRO 2026-02-02 05:02:15 3.43 0.93 -2.67% SPRO 2026-02-02 06:03:09 2.38 1.94 -2.67% SPRO 2026-02-02 10:03:15 2.38 2.12 -2.67% SPRO 2026-02-02 11:02:17 2.17 2.16 -0.89% SPRO 2026-02-02 12:03:12 2.19 2.18 0.00% SPRO 2026-02-02 13:02:22 2.20 2.19 0.89% SPRO 2026-02-02 14:03:10 2.23 2.22 2.22% SPRO 2026-02-02 15:02:36 2.25 2.24 3.11% SPRO 2026-02-02 16:03:29 2.26 2.25 3.56% SPRO 2026-02-02 17:02:17 2.29 2.21 2.22% SPRO 2026-02-02 18:03:21 2.29 2.21 2.28% SPRO 2026-02-02 21:06:20 0.00 0.00 2.28% 2026-02-03 SPRO 2026-02-03 05:02:16 3.56 0.95 2.28% SPRO 2026-02-03 06:03:12 2.50 2.29 3.20% SPRO 2026-02-03 08:03:08 2.37 2.29 3.20% SPRO 2026-02-03 09:02:19 2.50 2.20 3.20% SPRO 2026-02-03 10:03:12 2.28 2.20 3.20% SPRO 2026-02-03 11:02:14 2.23 2.21 -0.91% SPRO 2026-02-03 12:03:11 2.18 2.17 -1.83% SPRO 2026-02-03 13:02:28 2.14 2.12 -3.65% SPRO 2026-02-03 14:03:20 2.11 2.10 -5.48% SPRO 2026-02-03 15:02:21 2.12 2.10 -4.57% SPRO 2026-02-03 16:03:17 2.15 2.14 -3.65% SPRO 2026-02-03 17:02:20 2.29 2.02 -3.65% SPRO 2026-02-03 18:03:16 2.29 2.02 -3.59% SPRO 2026-02-03 19:02:20 2.50 2.02 -3.59% SPRO 2026-02-03 21:06:52 0.00 0.00 -3.59% 2026-02-04 SPRO 2026-02-04 05:02:23 2.42 2.25 -3.59% SPRO 2026-02-04 06:03:13 2.33 2.27 -3.59% SPRO 2026-02-04 07:02:19 2.30 2.27 5.83% SPRO 2026-02-04 08:03:05 2.31 2.25 5.83% SPRO 2026-02-04 10:03:14 2.28 2.25 5.83% SPRO 2026-02-04 11:02:16 2.25 2.24 4.93% SPRO 2026-02-04 12:03:27 2.23 2.22 4.04% SPRO 2026-02-04 13:02:22 2.21 2.20 3.14% SPRO 2026-02-04 14:03:32 2.25 2.23 4.93% SPRO 2026-02-04 15:02:23 2.26 2.25 5.83% SPRO 2026-02-04 16:03:15 2.29 2.27 6.73% SPRO 2026-02-04 17:02:12 2.31 2.25 6.73% SPRO 2026-02-04 18:03:12 2.31 2.20 7.01% SPRO 2026-02-04 21:07:03 0.00 0.00 7.01% 2026-02-05 SPRO 2026-02-05 05:02:31 3.66 0.97 7.01% SPRO 2026-02-05 06:03:17 2.64 2.19 7.01% SPRO 2026-02-05 08:03:16 2.58 2.22 7.01% SPRO 2026-02-05 10:03:13 2.29 2.22 7.01%