$MRSN: Mersana Therapeutics, Inc. - Common Stock
2025-11-07 MRSN 2025-11-07 14:03:13 7.93 7.86 -1.54% MRSN 2025-11-07 15:02:22 8.14 7.90 0.00% MRSN 2025-11-07 16:02:57 8.22 8.03 1.42% MRSN 2025-11-07 17:02:22 30.00 7.82 4.49% MRSN 2025-11-07 18:02:54 10.52 7.82 4.73% MRSN 2025-11-07 21:06:05 0.00 0.00 4.73% 2025-11-10 MRSN 2025-11-10 06:03:08 12.00 7.70 4.73% MRSN 2025-11-10 08:02:59 10.26 6.93 4.73% MRSN 2025-11-10 09:02:26 10.42 7.74 4.73% MRSN 2025-11-10 10:02:54 10.52 7.74 4.73% MRSN 2025-11-10 11:02:22 8.74 8.35 3.48% MRSN 2025-11-10 12:02:56 8.45 8.35 -0.75% MRSN 2025-11-10 13:02:18 8.39 8.19 -1.24% MRSN 2025-11-10 14:02:57 8.73 8.35 1.87% MRSN 2025-11-10 15:02:20 8.73 8.35 3.98% MRSN 2025-11-10 16:03:17 8.75 8.55 3.98% MRSN 2025-11-10 17:02:29 8.92 8.32 2.49% MRSN 2025-11-10 18:02:59 8.92 8.32 2.38% MRSN 2025-11-10 21:04:49 0.00 0.00 2.38% 2025-11-11 MRSN 2025-11-11 06:03:07 11.94 3.45 2.38% MRSN 2025-11-11 08:03:05 9.55 6.41 2.38% MRSN 2025-11-11 09:02:49 10.00 6.86 2.38% MRSN 2025-11-11 11:02:16 8.61 8.43 -0.48% MRSN 2025-11-11 12:02:58 8.49 8.39 -1.31% MRSN 2025-11-11 13:02:25 8.56 8.48 -1.19% MRSN 2025-11-11 14:02:58 8.65 8.56 0.00% MRSN 2025-11-11 15:02:22 8.74 8.59 -0.12% MRSN 2025-11-11 16:02:55 8.84 8.53 1.07% MRSN 2025-11-11 17:02:14 9.01 8.44 4.88% MRSN 2025-11-11 18:03:14 9.01 8.44 4.76% MRSN 2025-11-11 21:05:17 0.00 0.00 4.76% 2025-11-12 MRSN 2025-11-12 06:02:58 9.67 7.50 4.76% MRSN 2025-11-12 07:02:15 10.72 7.50 4.76% MRSN 2025-11-12 08:02:54 9.80 7.73 4.76% MRSN 2025-11-12 10:02:56 9.76 7.73 4.76% MRSN 2025-11-12 11:02:11 8.98 8.65 -2.32% MRSN 2025-11-12 12:02:49 8.75 8.44 -4.76% MRSN 2025-11-12 13:02:12 8.77 8.39 -4.76% MRSN 2025-11-12 14:02:54 8.72 8.61 -3.02% MRSN 2025-11-12 15:02:16 8.72 8.57 -3.72% MRSN 2025-11-12 16:02:54 8.72 8.59 -3.48% MRSN 2025-11-12 17:02:17 11.00 7.50 -0.35% MRSN 2025-11-12 18:02:49 10.31 8.11 -0.34% MRSN 2025-11-12 21:04:36 0.00 0.00 -0.34% MRSN 2025-11-12 22:05:58 10.31 8.11 -0.34% 2025-11-13 MRSN 2025-11-13 06:03:01 10.85 7.78 -0.34% MRSN 2025-11-13 07:02:10 28.19 27.12 216.84% MRSN 2025-11-13 07:17:29 8-K Sec report https://www.sec.gov/Archives/edgar/data/1442836/000110465925110764/0001104659-25-110764-index.htm 8-K - Mersana Therapeutics, Inc. (0001442836) (Filer) MRSN 2025-11-13 08:02:51 27.20 27.01 206.29% MRSN 2025-11-13 09:02:14 26.70 26.66 199.66% MRSN 2025-11-13 10:02:55 27.34 27.25 207.30% MRSN 2025-11-13 11:02:15 27.09 27.00 203.70% MRSN 2025-11-13 12:02:55 27.12 27.06 204.38% MRSN 2025-11-13 13:02:18 27.08 27.01 203.59% MRSN 2025-11-13 14:03:05 27.45 27.39 208.08% MRSN 2025-11-13 15:02:31 27.64 27.54 209.99% MRSN 2025-11-13 16:03:04 27.36 27.30 207.63% MRSN 2025-11-13 17:02:17 27.79 27.40 210.33% MRSN 2025-11-13 17:35:15 Mersana Therapeutics, Inc. (MRSN) Day One Biopharmaceuticals, Inc., - M&A Call - Slideshow MRSN 2025-11-13 17:51:40 Mersana Therapeutics, Inc. (MRSN) M&A Call Transcript MRSN 2025-11-13 18:02:52 27.40 27.26 209.47% MRSN 2025-11-13 19:02:16 27.42 27.21 207.33% MRSN 2025-11-13 20:02:48 27.42 27.21 206.65% MRSN 2025-11-13 21:05:01 0.00 0.00 206.88% 2025-11-14 MRSN 2025-11-14 06:03:04 27.28 26.90 -2.59% MRSN 2025-11-14 07:02:16 27.28 26.90 -1.80% MRSN 2025-11-14 08:07:24 8-K Sec report https://www.sec.gov/Archives/edgar/data/1442836/000110465925111925/0001104659-25-111925-index.htm 8-K - Mersana Therapeutics, Inc. (0001442836) (Filer) MRSN 2025-11-14 09:02:20 27.28 27.21 -2.37% MRSN 2025-11-14 09:11:11 10-Q Sec report https://www.sec.gov/Archives/edgar/data/1442836/000162828025052202/0001628280-25-052202-index.htm 10-Q - Mersana Therapeutics, Inc. (0001442836) (Filer) MRSN 2025-11-14 10:03:03 27.35 27.26 -1.80% MRSN 2025-11-14 11:02:10 27.68 27.57 2.82% MRSN 2025-11-14 12:02:45 28.00 27.93 6.54% MRSN 2025-11-14 13:02:16 27.89 27.76 5.07% MRSN 2025-11-14 14:02:59 27.72 27.60 2.59% MRSN 2025-11-14 15:02:27 27.96 27.70 3.04% MRSN 2025-11-14 16:03:11 27.80 27.74 3.72% MRSN 2025-11-14 17:02:28 28.15 27.65 5.64% MRSN 2025-11-14 18:02:56 28.15 27.30 0.84% MRSN 2025-11-14 19:02:40 28.15 27.31 -0.26% MRSN 2025-11-14 21:07:22 0.00 0.00 -0.26% 2025-11-17 MRSN 2025-11-17 05:02:17 28.04 27.31 -0.26% MRSN 2025-11-17 06:02:56 28.04 27.40 -0.26% MRSN 2025-11-17 07:02:13 28.04 27.31 -1.68% MRSN 2025-11-17 10:02:52 28.90 27.50 -1.46% MRSN 2025-11-17 11:02:06 28.00 27.85 0.15% MRSN 2025-11-17 12:02:50 27.77 27.60 -0.95% MRSN 2025-11-17 13:02:17 27.89 27.74 -0.51% MRSN 2025-11-17 14:03:10 27.77 27.66 -0.62% MRSN 2025-11-17 15:02:18 27.80 27.70 -0.77% MRSN 2025-11-17 16:03:00 27.80 27.70 -0.36% MRSN 2025-11-17 17:03:04 28.00 27.71 -0.73% MRSN 2025-11-17 18:02:51 28.00 27.71 -0.75% MRSN 2025-11-17 19:02:23 28.00 27.72 -0.72% MRSN 2025-11-17 21:06:52 0.00 0.00 -0.72% 2025-11-18 MRSN 2025-11-18 06:03:02 27.86 25.21 -0.72% MRSN 2025-11-18 11:13:30 27.98 27.68 0.72% MRSN 2025-11-18 12:02:18 27.84 27.62 0.07% MRSN 2025-11-18 13:02:41 27.82 27.68 -0.07% MRSN 2025-11-18 14:02:24 27.82 27.63 -0.21% MRSN 2025-11-18 15:02:44 27.67 27.56 -0.21% MRSN 2025-11-18 16:02:28 27.82 27.57 0.18% MRSN 2025-11-18 17:02:46 28.44 27.30 -0.61% MRSN 2025-11-18 21:11:25 0.00 0.00 -0.61% MRSN 2025-11-18 22:03:31 28.44 27.30 -0.61% 2025-11-19 MRSN 2025-11-19 05:02:52 0.00 0.00 -0.61% MRSN 2025-11-19 06:02:26 27.87 24.97 -0.61% MRSN 2025-11-19 08:02:30 28.14 27.50 -0.47% MRSN 2025-11-19 10:02:27 27.80 27.64 0.40% MRSN 2025-11-19 11:02:42 27.80 27.50 0.61% MRSN 2025-11-19 12:02:30 27.97 27.76 1.52% MRSN 2025-11-19 13:02:45 27.87 27.61 1.08% MRSN 2025-11-19 14:02:30 27.75 27.65 0.83% MRSN 2025-11-19 15:02:45 27.81 27.64 0.90% MRSN 2025-11-19 16:02:35 27.80 27.67 0.72% MRSN 2025-11-19 17:02:39 27.88 27.55 0.29% MRSN 2025-11-19 18:02:31 27.88 27.61 0.29% MRSN 2025-11-19 19:02:54 27.88 27.56 0.29% MRSN 2025-11-19 21:08:51 0.00 0.00 0.29% 2025-11-20 MRSN 2025-11-20 06:02:26 27.96 25.15 0.29% MRSN 2025-11-20 09:02:51 27.96 26.15 0.29% MRSN 2025-11-20 10:02:32 27.96 27.60 0.29% MRSN 2025-11-20 11:02:49 27.90 27.71 0.40% MRSN 2025-11-20 12:02:24 27.55 27.50 -0.36% MRSN 2025-11-20 13:02:54 27.56 27.42 -0.65% MRSN 2025-11-20 14:02:34 27.64 27.45 -0.18% MRSN 2025-11-20 15:02:53 27.45 27.26 -0.62% MRSN 2025-11-20 16:02:42 27.51 27.40 -0.51% MRSN 2025-11-20 17:02:56 27.65 27.26 -0.33% MRSN 2025-11-20 18:02:56 27.90 27.26 -0.33% MRSN 2025-11-20 21:07:09 0.00 0.00 -0.33% 2025-11-21 MRSN 2025-11-21 06:02:57 30.39 24.93 -0.33% MRSN 2025-11-21 07:02:58 30.39 24.93 -0.76% MRSN 2025-11-21 08:02:40 30.39 26.16 -0.76% MRSN 2025-11-21 09:02:56 30.39 27.40 -0.76% MRSN 2025-11-21 11:02:46 27.69 27.40 0.54% MRSN 2025-11-21 12:02:30 27.44 27.36 -0.36% MRSN 2025-11-21 13:02:57 27.59 27.47 -0.14% MRSN 2025-11-21 14:02:31 27.38 27.32 -0.58% MRSN 2025-11-21 15:03:05 27.46 27.35 -0.36% MRSN 2025-11-21 16:02:42 27.46 27.32 -0.62% MRSN 2025-11-21 17:02:52 650.00 26.61 -0.76% MRSN 2025-11-21 18:02:32 29.52 26.70 -1.13% MRSN 2025-11-21 19:02:55 29.52 26.71 -1.13% MRSN 2025-11-21 20:02:23 29.52 27.00 -1.13% MRSN 2025-11-21 21:11:54 0.00 0.00 -1.13% 2025-11-24 MRSN 2025-11-24 06:03:00 30.39 24.42 -1.13% MRSN 2025-11-24 08:03:00 29.85 26.91 -1.13% MRSN 2025-11-24 10:02:50 27.35 27.02 -1.13% MRSN 2025-11-24 11:02:18 27.60 27.34 1.13% MRSN 2025-11-24 12:02:53 27.59 27.30 0.07% MRSN 2025-11-24 13:02:19 27.25 27.18 -0.36% MRSN 2025-11-24 14:05:52 27.39 27.25 0.33% MRSN 2025-11-24 15:02:25 27.79 27.65 1.78% MRSN 2025-11-24 16:04:41 27.75 27.56 1.31% MRSN 2025-11-24 17:02:42 0.00 27.20 0.33% MRSN 2025-11-24 18:02:57 30.39 27.20 0.33% MRSN 2025-11-24 21:04:55 0.00 0.00 0.33% 2025-11-25 MRSN 2025-11-25 05:02:23 0.00 21.02 0.33% MRSN 2025-11-25 06:03:30 30.61 24.88 0.33% MRSN 2025-11-25 07:02:22 29.80 24.88 0.33% MRSN 2025-11-25 09:02:22 29.74 24.88 0.33% MRSN 2025-11-25 10:03:00 29.74 27.20 0.33% MRSN 2025-11-25 11:02:24 27.59 27.25 0.73% MRSN 2025-11-25 12:03:03 27.56 27.29 -0.29% MRSN 2025-11-25 13:02:17 27.60 27.34 -0.04% MRSN 2025-11-25 14:02:56 27.50 27.35 0.07% MRSN 2025-11-25 15:02:16 27.40 27.31 0.00% MRSN 2025-11-25 16:03:00 27.50 27.30 -0.11% MRSN 2025-11-25 17:02:20 27.50 27.20 0.29% MRSN 2025-11-25 21:06:54 0.00 0.00 0.29% 2025-11-26 MRSN 2025-11-26 06:02:56 27.40 24.88 0.29% MRSN 2025-11-26 10:02:55 29.74 27.21 0.29% MRSN 2025-11-26 11:02:17 27.60 27.27 0.55% MRSN 2025-11-26 12:02:50 27.54 27.41 0.47% MRSN 2025-11-26 13:02:35 27.55 27.43 0.26% MRSN 2025-11-26 14:02:57 27.65 27.53 0.88% MRSN 2025-11-26 15:02:17 27.70 27.52 0.80% MRSN 2025-11-26 16:02:56 27.83 27.67 1.24% MRSN 2025-11-26 17:02:18 27.99 27.25 0.51% MRSN 2025-11-26 21:07:06 0.00 0.00 0.51% 2025-11-27 MRSN 2025-11-27 19:02:22 27.99 27.25 0.51% MRSN 2025-11-27 21:05:31 0.00 0.00 0.51% 2025-11-28 MRSN 2025-11-28 06:03:01 30.15 24.88 0.51% MRSN 2025-11-28 07:02:14 30.15 27.27 0.51% MRSN 2025-11-28 09:02:10 30.18 27.27 0.51% MRSN 2025-11-28 11:02:14 27.50 27.31 -0.18% MRSN 2025-11-28 12:02:50 27.43 27.30 -0.62% MRSN 2025-11-28 13:02:16 27.49 27.39 -0.33% MRSN 2025-11-28 14:02:56 27.75 27.26 -0.36% MRSN 2025-11-28 15:02:16 27.75 27.22 -0.36% MRSN 2025-11-28 16:02:49 27.75 27.22 -0.76% MRSN 2025-11-28 18:02:45 0.00 0.00 -0.76% 2025-12-01 MRSN 2025-12-01 06:02:53 30.38 24.88 -0.76% MRSN 2025-12-01 08:02:51 30.38 27.01 -0.76% MRSN 2025-12-01 11:02:14 27.58 27.40 0.29% MRSN 2025-12-01 12:02:51 27.59 27.49 0.40% MRSN 2025-12-01 13:02:19 27.65 27.41 0.22% MRSN 2025-12-01 14:03:05 27.61 27.55 0.47% MRSN 2025-12-01 15:02:18 27.54 27.43 0.25% MRSN 2025-12-01 16:03:02 27.40 27.38 -0.07% MRSN 2025-12-01 17:02:20 27.75 27.25 0.00% MRSN 2025-12-01 18:02:57 27.75 27.20 0.00% MRSN 2025-12-01 19:02:21 27.35 27.22 0.00% MRSN 2025-12-01 21:06:26 0.00 0.00 0.00% 2025-12-02 MRSN 2025-12-02 06:03:05 30.61 24.88 0.00% MRSN 2025-12-02 07:02:39 30.20 24.88 0.00% MRSN 2025-12-02 08:03:01 29.32 27.25 0.00% MRSN 2025-12-02 11:02:17 27.79 27.41 0.66% MRSN 2025-12-02 13:02:52 27.64 27.43 0.07% MRSN 2025-12-02 14:02:11 27.70 27.61 0.87% MRSN 2025-12-02 15:02:54 27.69 27.56 0.98% MRSN 2025-12-02 16:02:18 27.68 27.56 0.51% MRSN 2025-12-02 17:02:52 27.89 27.42 0.33% MRSN 2025-12-02 21:10:38 0.00 0.00 0.33% 2025-12-03 MRSN 2025-12-03 06:02:15 30.61 24.93 0.33% MRSN 2025-12-03 07:03:01 29.80 24.93 0.33% MRSN 2025-12-03 11:02:55 27.69 27.42 0.26% MRSN 2025-12-03 12:02:08 27.74 27.59 0.26% MRSN 2025-12-03 13:02:48 27.84 27.66 0.55% MRSN 2025-12-03 14:02:15 27.79 27.56 0.26% MRSN 2025-12-03 15:03:02 27.79 27.61 0.98% MRSN 2025-12-03 16:02:18 27.85 27.69 0.98% MRSN 2025-12-03 17:03:08 28.00 27.15 1.24% MRSN 2025-12-03 18:02:29 27.90 27.15 1.24% MRSN 2025-12-03 21:11:32 0.00 0.00 1.24% 2025-12-04 MRSN 2025-12-04 06:02:26 28.11 27.30 1.24% MRSN 2025-12-04 11:07:44 27.99 27.91 0.36% MRSN 2025-12-04 12:02:11 28.38 28.15 1.53% MRSN 2025-12-04 13:06:16 28.15 28.04 0.69% MRSN 2025-12-04 14:02:20 27.99 27.89 0.22% MRSN 2025-12-04 15:03:02 27.85 27.74 -0.36% MRSN 2025-12-04 16:02:54 27.78 27.72 -0.44% MRSN 2025-12-04 17:02:48 27.76 27.32 -1.38% MRSN 2025-12-04 18:02:12 27.76 27.32 -1.36% MRSN 2025-12-04 19:02:57 27.76 27.32 -1.83% MRSN 2025-12-04 21:11:51 0.00 0.00 -1.83% 2025-12-05 MRSN 2025-12-05 06:02:23 30.37 24.93 -1.83% MRSN 2025-12-05 11:03:04 27.68 27.35 0.61% MRSN 2025-12-05 12:02:16 27.50 27.39 0.07% MRSN 2025-12-05 13:02:54 27.88 27.76 1.11% MRSN 2025-12-05 14:02:16 27.78 27.66 1.15% MRSN 2025-12-05 15:02:52 27.97 27.65 0.86% MRSN 2025-12-05 16:02:37 27.95 27.82 1.18% MRSN 2025-12-05 17:02:55 28.80 27.31 1.15% MRSN 2025-12-05 18:02:09 28.80 27.15 1.16% MRSN 2025-12-05 21:07:39 0.00 0.00 1.16%