Upstream Bio (UPB) Historical Stock Prices

Upstream Bio, Inc. (UPB), daily historical prices. Prices in USD.
Date	Open	High	Low	Close		Volume
Jan 15, 2026	32.42	32.42	30.74	30.90	30.90	718,900
Jan 14, 2026	32.68	33.68	31.95	32.30	32.30	621,000
Jan 13, 2026	31.71	32.66	30.48	32.60	32.60	834,700
Jan 12, 2026	29.73	31.93	29.34	31.66	31.66	679,000
Jan 9, 2026	27.87	30.60	27.87	29.75	29.75	851,400
Jan 8, 2026	27.71	28.49	27.22	27.54	27.54	502,700
Jan 7, 2026	26.08	28.16	26.08	28.08	28.08	700,300
Jan 6, 2026	25.93	26.52	25.00	25.87	25.87	452,800
Jan 5, 2026	27.07	27.39	25.25	26.13	26.13	689,800
Jan 2, 2026	27.30	28.01	26.72	27.07	27.07	586,400
Dec 31, 2025	27.17	27.58	26.86	27.15	27.15	517,800
Dec 30, 2025	28.77	28.77	26.86	27.32	27.32	831,500
Dec 29, 2025	29.48	29.92	28.70	28.83	28.83	238,300
Dec 26, 2025	30.11	30.11	29.10	29.48	29.48	228,000
Dec 24, 2025	29.65	30.76	29.60	30.27	30.27	266,500
Dec 23, 2025	30.27	30.76	29.05	29.21	29.21	347,200
Dec 22, 2025	29.29	30.89	29.00	30.43	30.43	701,400
Dec 19, 2025	30.01	30.56	29.19	29.35	29.35	1,463,000
Dec 18, 2025	29.09	30.27	28.36	29.86	29.86	795,900
Dec 17, 2025	29.41	29.95	28.15	28.33	28.33	439,700
Dec 16, 2025	26.92	29.73	26.03	29.32	29.32	932,300
Dec 15, 2025	27.56	27.95	26.67	27.20	27.20	1,173,500
Dec 12, 2025	28.00	28.25	26.78	27.14	27.14	305,400
Dec 11, 2025	28.72	29.51	27.16	27.47	27.47	661,700
Dec 10, 2025	28.37	29.55	27.93	28.67	28.67	342,300

Historical stock data.