Spero Therapeutics, Inc. (SPRO)

NASDAQ: SPRO · Real-Time Price · USD

2.110

-0.660 (-23.83%)

At close: Jun 17, 2026, 4:00 PM EDT

2.330

+0.220 (10.43%)

After-hours: Jun 17, 2026, 7:58 PM EDT

Spero Therapeutics Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jun 17, 2026	2.87	3.05	1.95	2.11	2.11	-23.83%	10,811,872
Jun 16, 2026	2.94	2.98	2.75	2.77	2.77	-4.81%	1,421,724
Jun 15, 2026	2.93	2.97	2.85	2.91	2.91	2.11%	932,419
Jun 12, 2026	2.72	2.85	2.70	2.85	2.85	5.56%	620,734
Jun 11, 2026	2.55	2.76	2.48	2.70	2.70	6.30%	1,148,827
Jun 10, 2026	2.62	2.64	2.51	2.54	2.54	-1.17%	757,241
Jun 9, 2026	2.78	2.81	2.52	2.57	2.57	-6.20%	1,126,680
Jun 8, 2026	2.84	2.87	2.73	2.74	2.74	-2.84%	647,262
Jun 5, 2026	3.00	3.00	2.76	2.82	2.82	-5.37%	752,935
Jun 4, 2026	2.79	3.07	2.78	2.98	2.98	6.43%	1,021,284
Jun 3, 2026	2.86	2.87	2.77	2.80	2.80	-1.06%	770,676
Jun 2, 2026	2.81	2.87	2.76	2.83	2.83	-	604,860
Jun 1, 2026	2.83	2.89	2.79	2.83	2.83	-	646,240
May 29, 2026	2.92	2.92	2.75	2.83	2.83	-2.41%	1,340,207
May 28, 2026	2.93	3.00	2.90	2.90	2.90	-1.02%	791,950
May 27, 2026	2.86	3.08	2.81	2.93	2.93	2.45%	1,774,387
May 26, 2026	2.80	2.95	2.76	2.86	2.86	3.62%	1,516,806
May 22, 2026	2.71	2.85	2.69	2.76	2.76	2.60%	545,468
May 21, 2026	2.63	2.71	2.56	2.69	2.69	2.28%	433,214
May 20, 2026	2.59	2.65	2.55	2.63	2.63	1.54%	320,203
May 19, 2026	2.52	2.62	2.50	2.59	2.59	0.39%	323,160
May 18, 2026	2.77	2.79	2.57	2.58	2.58	-7.53%	917,938
May 15, 2026	2.71	2.89	2.69	2.79	2.79	1.09%	938,966
May 14, 2026	2.44	2.76	2.37	2.76	2.76	13.11%	1,606,705
May 13, 2026	2.56	2.56	2.43	2.44	2.44	-3.94%	675,027
May 12, 2026	2.51	2.56	2.48	2.54	2.54	-0.39%	350,939
May 11, 2026	2.62	2.67	2.54	2.55	2.55	-0.39%	431,855
May 8, 2026	2.52	2.58	2.49	2.56	2.56	1.99%	355,975
May 7, 2026	2.54	2.62	2.50	2.51	2.51	-0.79%	566,249
May 6, 2026	2.47	2.57	2.44	2.53	2.53	4.55%	620,277
May 5, 2026	2.51	2.59	2.41	2.42	2.42	-3.20%	506,928
May 4, 2026	2.50	2.61	2.46	2.50	2.50	0.81%	462,338
May 1, 2026	2.54	2.63	2.48	2.48	2.48	-1.20%	494,431
Apr 30, 2026	2.50	2.58	2.50	2.51	2.51	-0.79%	363,858
Apr 29, 2026	2.65	2.66	2.47	2.53	2.53	-5.24%	828,454
Apr 28, 2026	2.68	2.73	2.67	2.67	2.67	-	219,094
Apr 27, 2026	2.74	2.75	2.67	2.67	2.67	-2.55%	322,735
Apr 24, 2026	2.82	2.82	2.74	2.74	2.74	-2.14%	346,529
Apr 23, 2026	2.86	2.91	2.79	2.80	2.80	-2.10%	297,031
Apr 22, 2026	2.84	2.93	2.84	2.86	2.86	2.14%	319,737
Apr 21, 2026	2.82	2.82	2.74	2.80	2.80	-1.41%	266,215
Apr 20, 2026	2.73	2.86	2.71	2.84	2.84	3.27%	395,812
Apr 17, 2026	2.71	2.78	2.65	2.75	2.75	2.61%	381,209
Apr 16, 2026	2.64	2.71	2.62	2.68	2.68	1.52%	552,122
Apr 15, 2026	2.78	2.80	2.63	2.64	2.64	-5.04%	696,141
Apr 14, 2026	2.84	2.88	2.76	2.78	2.78	-	603,729
Apr 13, 2026	2.67	2.86	2.67	2.78	2.78	4.12%	614,602
Apr 10, 2026	2.80	2.80	2.63	2.67	2.67	-3.96%	786,982
Apr 9, 2026	2.72	2.80	2.67	2.78	2.78	2.21%	450,193
Apr 8, 2026	2.70	2.75	2.61	2.72	2.72	1.87%	426,784