Amphastar Pharmaceuticals, Inc. - AMPH - Stock Historical Data & Price

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
February 20, 2026	28.58	28.53	28.53	28.98	28.03	508,412
February 19, 2026	28.56	28.54	28.54	28.71	28.42	340,700
February 18, 2026	28.45	28.66	28.66	29.16	28.36	325,939
February 17, 2026	28.65	28.45	28.45	29.23	28.39	316,900
February 13, 2026	27.82	28.5	28.5	29	27.76	268,700
February 12, 2026	28.62	27.55	27.55	28.62	27.24	437,541
February 11, 2026	28.62	28.59	28.59	29.09	28.48	236,616
February 10, 2026	28.75	28.57	28.57	28.92	28.49	182,600
February 09, 2026	29.08	28.61	28.61	29.2	28.37	285,022
February 06, 2026	28.61	29.26	29.26	29.46	28.61	343,842
February 05, 2026	28.45	28.63	28.63	29.22	28.45	288,034
February 04, 2026	28.79	28.61	28.61	29.37	28.56	378,900
February 03, 2026	27.57	28.24	28.24	28.28	27.06	506,300
February 02, 2026	26.36	27.92	27.92	28.13	26.34	444,100
January 30, 2026	26.15	26.49	26.49	26.6	26.04	294,500
January 29, 2026	26.1	26.15	26.15	26.43	25.8	184,400
January 28, 2026	26.45	26.12	26.12	26.45	25.86	209,032
January 27, 2026	26.39	26.25	26.25	26.58	25.81	264,507
January 26, 2026	25.92	26.6	26.6	26.71	25.63	316,200
January 23, 2026	26.03	25.92	25.92	26.37	25.81	269,500
January 22, 2026	26.25	26.15	26.15	26.92	26.1	233,300
January 21, 2026	25.96	26.22	26.22	26.59	25.93	251,623
January 20, 2026	25.62	25.95	25.95	26.75	25.47	282,605
January 16, 2026	25.94	26.07	26.07	26.23	25.42	286,949
January 15, 2026	27.65	26	26	27.69	25.94	584,100
January 14, 2026	28.8	27.76	27.76	29.2	27.61	472,419
January 13, 2026	29.16	28.91	28.91	29.38	28.4	345,642
January 12, 2026	28.05	29.4	29.4	29.52	27.31	455,860
January 09, 2026	27.71	27.74	27.74	28.02	27.43	247,216
January 08, 2026	27.4	27.74	27.74	28.34	27.23	304,492
January 07, 2026	27.83	27.33	27.33	28.28	27.15	342,800
January 06, 2026	26.53	27.62	27.62	27.75	26.51	300,100
January 05, 2026	26.21	26.72	26.72	27.45	26.11	419,200
January 02, 2026	26.91	26.46	26.46	26.93	26.02	406,000
December 31, 2025	27.06	26.78	26.78	27.06	26.64	218,300
December 30, 2025	26.75	27	27	27.16	26.73	251,521
December 29, 2025	27	26.79	26.79	27.23	26.77	220,500
December 26, 2025	26.77	27.12	27.12	27.17	26.55	229,035
December 24, 2025	26.45	26.81	26.81	27.12	26.44	175,200
December 23, 2025	27.24	26.45	26.45	27.26	26.26	333,344
December 22, 2025	26.5	27.32	27.32	27.44	26.35	507,332
December 19, 2025	26.4	26.6	26.6	26.8	26.33	812,109
December 18, 2025	26.04	26.5	26.5	26.62	25.92	340,800
December 17, 2025	25.6	26.07	26.07	26.52	25.47	389,864
December 16, 2025	26.18	25.61	25.61	26.31	25.16	499,500
December 15, 2025	25.78	26.31	26.31	26.5	25.56	472,900
December 12, 2025	26.13	25.27	25.27	26.13	25.2	341,410
December 11, 2025	25.81	25.9	25.9	25.94	25.47	284,940
December 10, 2025	25.64	25.71	25.71	25.91	25.22	483,522
December 09, 2025	25.97	25.65	25.65	26.39	25.56	414,104
December 08, 2025	26.81	26.01	26.01	26.85	25.95	300,935
December 05, 2025	27.15	26.77	26.77	27.47	26.69	323,300
December 04, 2025	27.58	27.15	27.16	27.84	26.97	393,059
December 03, 2025	26.86	27.58	27.58	27.82	26.75	317,346
December 02, 2025	27.46	26.67	26.67	27.62	26.23	456,400
December 01, 2025	27.44	27.45	27.45	27.82	27.3	355,915
November 28, 2025	27.47	27.7	27.7	27.78	27.37	208,313
November 26, 2025	27.44	27.36	27.36	27.83	27.23	410,900
November 25, 2025	27	27.69	27.69	27.76	26.9	375,514
November 24, 2025	25.96	26.71	26.71	26.79	25.82	347,065

Amphastar Pharmaceuticals, Inc. (AMPH) NASDAQ