Upstream Bio, Inc. - Common Stock (UPB)

Historical Prices For Upstream Bio, Inc. - Common Stock (UPB)

Date Range:

2025-09-15 - 2025-12-15

Date	Open	High	Low	Close	Volume	Adjusted Close
12/15/2025	27.56	27.95	26.68	27.20	1,173,480	27.20
12/12/2025	28.00	28.25	26.84	27.14	305,420	27.14
12/11/2025	28.72	29.51	27.16	27.47	661,683	27.47
12/10/2025	28.37	29.55	27.93	28.67	342,255	28.67
12/09/2025	28.73	29.17	27.99	28.36	403,427	28.36
12/08/2025	28.03	29.50	27.91	28.97	345,147	28.97
12/05/2025	27.82	28.43	27.00	27.75	399,865	27.75
12/04/2025	26.69	28.45	26.69	27.74	568,481	27.74
12/03/2025	25.01	27.15	24.94	26.97	497,292	26.97
12/02/2025	29.61	29.89	24.61	25.01	839,143	25.01
12/01/2025	28.32	29.08	28.07	28.98	418,272	28.98
11/28/2025	28.14	28.89	28.06	28.60	145,017	28.60
11/26/2025	29.12	33.00	27.90	28.00	510,073	28.00
11/25/2025	26.22	29.29	25.84	28.83	683,358	28.83
11/24/2025	25.35	26.99	25.32	26.05	1,256,200	26.05
11/21/2025	24.71	26.10	24.12	25.55	384,488	25.55
11/20/2025	25.37	26.19	24.75	24.96	402,304	24.96
11/19/2025	25.31	25.80	24.10	24.94	422,235	24.94
11/18/2025	26.20	26.20	25.07	25.56	585,001	25.56
11/17/2025	24.39	26.15	24.14	25.70	527,513	25.70
11/14/2025	23.08	25.10	23.01	24.53	801,777	24.53
11/13/2025	23.52	23.99	22.98	23.34	429,938	23.34
11/12/2025	23.74	24.95	23.22	23.72	476,587	23.72
11/11/2025	23.31	24.80	22.89	23.78	214,970	23.78
11/10/2025	23.52	23.87	22.59	23.50	490,481	23.50
11/07/2025	23.64	23.64	21.98	22.96	271,659	22.96
11/06/2025	24.00	24.58	23.03	23.66	289,373	23.66
11/05/2025	25.44	25.65	23.66	23.97	234,637	23.97
11/04/2025	24.27	25.57	24.02	25.04	342,734	25.04
11/03/2025	25.92	26.22	24.76	25.02	316,704	25.02
10/31/2025	25.70	26.25	25.48	25.85	215,055	25.85
10/30/2025	23.93	26.90	23.93	25.77	353,009	25.77
10/29/2025	24.82	25.33	23.95	24.19	197,859	24.19
10/28/2025	23.50	25.09	23.50	24.84	418,005	24.84
10/27/2025	21.97	24.00	21.89	23.58	413,895	23.58
10/24/2025	21.45	22.14	21.44	21.86	186,192	21.86
10/23/2025	22.12	22.42	21.02	21.13	241,381	21.13
10/22/2025	22.22	22.62	21.90	22.15	450,360	22.15
10/21/2025	23.03	23.03	22.14	22.33	475,311	22.33
10/20/2025	21.37	23.34	21.17	23.05	787,806	23.05
10/17/2025	21.86	22.15	20.65	20.97	370,897	20.97
10/16/2025	21.79	22.39	21.39	22.28	396,768	22.28
10/15/2025	20.12	21.87	20.12	21.69	477,981	21.69
10/14/2025	20.65	20.65	19.63	19.98	261,701	19.98
10/13/2025	19.79	20.31	19.56	20.08	218,214	20.08
10/10/2025	19.80	20.68	19.46	19.62	271,809	19.62
10/09/2025	18.90	20.09	18.61	19.79	636,393	19.79
10/08/2025	18.88	19.30	18.72	18.92	328,407	18.92
10/07/2025	18.77	18.96	18.18	18.67	190,145	18.67
10/06/2025	18.72	19.44	18.72	18.97	334,578	18.97
10/03/2025	18.60	19.06	18.60	18.63	239,518	18.63
10/02/2025	18.69	19.01	18.37	18.59	336,949	18.59
10/01/2025	18.67	19.00	18.05	18.63	327,760	18.63
9/30/2025	17.34	19.23	17.14	18.81	783,041	18.81
9/29/2025	17.23	17.81	17.06	17.34	208,388	17.34
9/26/2025	16.35	17.32	16.27	17.26	260,722	17.26
9/25/2025	16.60	16.63	16.02	16.31	171,304	16.31
9/24/2025	16.25	16.78	16.20	16.75	294,785	16.75
9/23/2025	16.50	16.79	16.14	16.28	190,419	16.28
9/22/2025	16.40	16.98	15.99	16.65	322,092	16.65
9/19/2025	17.41	17.59	16.16	16.38	2,447,213	16.38
9/18/2025	16.22	17.39	16.16	17.27	342,799	17.27
9/17/2025	17.33	17.78	15.55	16.02	540,013	16.02
9/16/2025	16.78	17.97	16.61	17.35	593,399	17.35