Zhang Jack Y.

Insider CIK 1611157 · AMPH CEO & Chief Scientific Officer, Director, 10% owner

Track record PRO

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Track record

See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.

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Trades across companies

Ticker	Code	Trade	Filed	Shares	Price	Value	Owned after
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-15	2026-03-17	2,908	$18.18	$52.9K	1,245,125	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-15	2026-03-17	9,784	$18.18	$177.9K	2,990,052	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-10	2026-03-11	14,785	$18.91	$279.6K	2,999,836	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-10	2026-03-11	4,395	$18.91	$83.1K	1,248,033	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2026-03-09	2026-03-11	149,472	—	$0	149,472	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2026-03-09	2026-03-11	372,338	—	$0	372,338	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2026-03-09	2026-03-11	72,462	—	$0	1,252,428	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2026-03-09	2026-03-11	180,504	—	$0	3,014,621	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-06	2026-03-10	7,773	$19.34	$150.3K	2,834,117	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-06	2026-03-10	3,077	$19.34	$59.5K	1,179,966	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-04	2026-03-06	2,432	$19.96	$48.5K	1,183,043	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2026-03-04	2026-03-06	5,769	$19.96	$115.1K	2,841,890	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2025-06-13	2025-06-16	200,000	—	$0	205,003	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2025-06-13	2025-06-16	200,000	$13.03	$2.61M	2,847,659	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-17	2025-03-18	16,150	$27.69	$447.2K	2,647,659	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-17	2025-03-18	7,223	$27.69	$200.0K	1,185,475	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-15	2025-03-18	4,115	$26.66	$109.7K	1,192,698	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-15	2025-03-18	9,765	$26.66	$260.3K	2,663,809	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2025-03-14	2025-03-18	211,213	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2025-03-14	2025-03-18	290,477	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-14	2025-03-18	162,657	$26.66	$4.34M	1,196,813	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2025-03-14	2025-03-18	211,213	$14.69	$3.10M	1,359,470	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-14	2025-03-18	226,285	$26.66	$6.03M	2,673,574	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2025-03-14	2025-03-18	290,477	$14.69	$4.27M	2,899,859	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2025-03-10	2025-03-12	104,052	—	$0	104,052	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2025-03-10	2025-03-12	246,821	—	$0	246,821	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2025-03-10	2025-03-12	48,996	—	$0	1,148,257	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2025-03-10	2025-03-12	116,226	—	$0	2,609,382	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-06	2025-03-10	3,069	$28.32	$86.9K	1,099,261	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-06	2025-03-10	9,645	$28.32	$273.1K	2,493,156	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-04	2025-03-06	5,753	$27.62	$158.9K	2,502,801	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2025-03-04	2025-03-06	2,426	$27.62	$67.0K	1,102,330	SEC↗
AMPH Amphastar Pharmaceuticals,	G Gift	2024-11-11	2024-11-12	125,000	—	$0	1,104,756	SEC↗
AMPH Amphastar Pharmaceuticals,	G Gift	2024-11-11	2024-11-12	125,000	—	$0	2,508,554	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2024-09-13	2024-09-16	100,000	—	$0	290,477	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2024-09-13	2024-09-16	100,000	$14.69	$1.47M	2,633,554	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2024-06-10	2024-06-11	100,000	—	$0	390,477	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2024-06-10	2024-06-11	100,000	$14.69	$1.47M	2,533,554	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-17	2024-03-19	15,768	$43.05	$678.8K	2,433,554	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-17	2024-03-19	7,052	$43.05	$303.6K	1,229,756	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2024-03-15	2024-03-19	722,046	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2024-03-15	2024-03-19	310,930	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-15	2024-03-19	202,658	$43.05	$8.72M	1,236,808	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2024-03-15	2024-03-19	310,930	$12.46	$3.87M	1,439,466	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-15	2024-03-19	408,721	$43.05	$17.60M	2,449,322	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2024-03-15	2024-03-19	722,046	$12.46	$9.00M	2,858,043	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-06	2024-03-08	7,031	$46.31	$325.6K	2,135,997	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2024-03-06	2024-03-08	2,990	$46.31	$138.5K	1,128,536	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2024-03-04	2024-03-06	57,109	—	$0	57,109	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2024-03-04	2024-03-06	135,473	—	$0	135,473	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2024-03-04	2024-03-06	64,310	—	$0	2,143,028	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2024-03-04	2024-03-06	27,110	—	$0	1,131,526	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-10	2024-01-11	50,514	$54.89	$2.77M	1,107,052	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-10	2024-01-11	920	$55.95	$51.5K	1,106,132	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-10	2024-01-11	1,716	$57.00	$97.8K	1,104,416	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-10	2024-01-11	78,236	$54.32	$4.25M	1,157,566	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-09	2024-01-10	3,714	$58.35	$216.7K	1,235,802	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-09	2024-01-10	31,764	$57.70	$1.83M	1,239,516	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-09	2024-01-10	50,678	$56.70	$2.87M	1,271,280	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	41,282	$58.25	$2.40M	1,395,462	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	18,858	$56.98	$1.07M	1,436,744	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	37,865	$59.24	$2.24M	1,357,597	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	27,563	$59.99	$1.65M	1,330,034	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	4,261	$61.19	$260.7K	1,325,773	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	1,663	$61.81	$102.8K	1,324,110	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2024-01-08	2024-01-10	2,152	$63.27	$136.2K	1,321,958	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-17	2023-03-20	7,052	$36.29	$255.9K	1,455,602	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-17	2023-03-20	15,768	$36.29	$572.2K	2,078,718	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-16	2023-03-20	9,998	$37.60	$375.9K	1,462,654	SEC↗
AMPH Amphastar Pharmaceuticals,	G Gift	2023-03-16	2023-03-20	57,365	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	G Gift	2023-03-16	2023-03-20	57,365	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-16	2023-03-20	25,241	$37.60	$949.1K	2,094,486	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-15	2023-03-17	2,803	$36.84	$103.3K	1,530,017	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2023-03-15	2023-03-17	8,434	$36.84	$310.7K	2,177,092	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2023-03-06	2023-03-08	72,278	—	$0	72,278	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2023-03-06	2023-03-08	171,488	—	$0	171,488	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2023-03-06	2023-03-08	34,301	—	$0	1,532,820	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2023-03-06	2023-03-08	81,383	—	$0	2,185,526	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-20	2022-05-23	10,650	$34.21	$364.3K	2,104,143	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-19	2022-05-20	115	$34.28	$3.9K	2,114,793	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-19	2022-05-20	41,615	$33.76	$1.40M	2,114,908	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-18	2022-05-20	55,264	$33.97	$1.88M	2,168,305	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-18	2022-05-20	2,006	$35.78	$71.8K	2,156,523	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-18	2022-05-20	9,776	$34.77	$339.9K	2,158,529	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-17	2022-05-18	2,837	$36.14	$102.5K	2,223,569	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-17	2022-05-18	47,539	$35.74	$1.70M	2,226,406	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-16	2022-05-18	54,274	$35.58	$1.93M	2,287,740	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2022-05-16	2022-05-18	13,795	$36.41	$502.3K	2,273,945	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-17	2022-03-18	15,768	$34.18	$539.0K	2,342,014	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-17	2022-03-18	7,052	$34.18	$241.0K	1,498,519	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-16	2022-03-18	25,241	$34.22	$863.7K	2,357,782	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-16	2022-03-18	10,426	$34.22	$356.8K	1,505,571	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2022-03-15	2022-03-17	74,784	—	$0	74,784	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2022-03-15	2022-03-17	177,461	—	$0	177,461	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2022-03-15	2022-03-17	76,914	—	$0	2,397,782	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-15	2022-03-17	14,759	$34.74	$512.7K	2,383,023	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2022-03-15	2022-03-17	4,786	$34.74	$166.3K	1,515,997	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2022-03-15	2022-03-17	32,412	—	$0	1,520,783	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2021-03-17	2021-03-18	133,585	—	$0	133,585	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2021-03-17	2021-03-18	298,688	—	$0	298,688	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2021-03-17	2021-03-18	127,209	—	$0	2,320,868	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2021-03-17	2021-03-18	56,892	—	$0	1,488,371	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2021-03-16	2021-03-18	25,241	$18.44	$465.4K	2,193,659	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2021-03-16	2021-03-18	8,890	$18.44	$163.9K	1,431,479	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2021-03-15	2021-03-17	9,592	$19.15	$183.7K	1,440,369	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2021-03-15	2021-03-17	28,088	$19.15	$537.9K	2,218,900	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-18	2021-02-18	407	$18.58	$7.6K	6,827,679	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-17	2021-02-18	13,801	$18.67	$257.7K	6,828,086	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-16	2021-02-18	16,259	$18.51	$301.0K	6,841,887	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-12	2021-02-12	13,277	$18.94	$251.5K	6,858,146	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-11	2021-02-12	19,823	$19.06	$377.8K	6,871,423	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-10	2021-02-12	15,747	$18.76	$295.4K	6,891,246	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-09	2021-02-09	11,927	$18.93	$225.8K	6,906,993	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-08	2021-02-09	13,452	$18.89	$254.1K	6,918,920	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-05	2021-02-09	15,507	$18.94	$293.7K	6,932,372	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-04	2021-02-05	25,570	$18.89	$483.0K	6,947,879	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-03	2021-02-05	16,299	$18.36	$299.2K	6,973,449	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-02	2021-02-03	13,817	$18.66	$257.8K	6,989,748	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2021-02-01	2021-02-03	24,114	$18.29	$441.0K	7,003,565	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2020-03-16	2020-03-18	181,134	—	$0	181,134	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2020-03-16	2020-03-18	405,003	—	$0	405,003	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2020-03-16	2020-03-18	152,724	—	$0	2,246,988	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2020-03-16	2020-03-18	25,873	$13.03	$337.1K	2,094,264	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2020-03-16	2020-03-18	7,771	$13.03	$101.3K	1,381,658	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2020-03-16	2020-03-18	68,303	—	$0	1,449,961	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2020-03-15	2020-03-17	9,593	$14.19	$136.1K	1,389,429	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2020-03-15	2020-03-17	27,179	$14.19	$385.7K	2,120,137	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2019-09-11	2019-09-12	300,000	$20.82	$6.25M	7,027,679	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-17	2019-03-18	13,941	$20.23	$282.0K	1,399,022	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-17	2019-03-18	32,374	$20.23	$654.9K	2,147,316	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-16	2019-03-18	11,832	$20.23	$239.4K	1,412,963	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-16	2019-03-18	27,476	$20.23	$555.8K	2,179,690	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2019-03-15	2019-03-18	224,737	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2019-03-15	2019-03-18	514,783	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2019-03-15	2019-03-18	262,182	—	$0	262,182	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2019-03-15	2019-03-18	110,671	—	$0	110,671	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2019-03-15	2019-03-18	514,783	$15.84	$8.15M	2,587,100	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-15	2019-03-18	17,205	$20.23	$348.1K	2,207,166	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-15	2019-03-18	7,317	$20.23	$148.0K	1,424,795	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2019-03-15	2019-03-18	224,737	$15.84	$3.56M	1,591,443	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-15	2019-03-18	200,853	$20.23	$4.06M	1,390,590	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2019-03-15	2019-03-18	461,097	$20.23	$9.33M	2,126,003	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2019-03-15	2019-03-18	98,368	—	$0	2,224,371	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2019-03-15	2019-03-18	41,522	—	$0	1,432,112	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2018-12-14	2018-12-17	43,577	$20.48	$892.5K	2,072,317	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2018-12-13	2018-12-13	29,689	$20.99	$623.2K	7,327,679	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2018-12-12	2018-12-13	37,469	$21.21	$794.7K	7,357,368	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2018-12-11	2018-12-13	63,504	$21.43	$1.36M	7,398,090	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2018-12-11	2018-12-13	3,253	$22.13	$72.0K	7,394,837	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2018-07-02	2018-07-03	319,791	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2018-07-02	2018-07-03	186,545	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-07-02	2018-07-03	284,516	$15.39	$4.38M	2,115,894	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2018-07-02	2018-07-03	319,791	$12.02	$3.84M	2,400,410	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2018-07-02	2018-07-03	186,545	$12.02	$2.24M	1,532,674	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-07-02	2018-07-03	165,968	$15.39	$2.55M	1,366,706	SEC↗
AMPH Amphastar Pharmaceuticals,	P Buy	2018-05-16	2018-05-17	15,000	$16.06	$240.9K	2,080,619	SEC↗
AMPH Amphastar Pharmaceuticals,	P Buy	2018-05-15	2018-05-17	25,000	$16.08	$402.0K	2,065,619	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-26	2018-03-28	20,728	$18.61	$385.7K	2,040,619	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-26	2018-03-28	8,844	$18.61	$164.6K	1,346,129	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-17	2018-03-20	9,589	$19.91	$190.9K	1,354,973	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-17	2018-03-20	30,487	$19.91	$607.0K	2,061,347	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-16	2018-03-20	7,771	$19.91	$154.7K	1,364,562	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2018-03-16	2018-03-20	19,360	$19.91	$385.5K	2,091,834	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2018-03-15	2018-03-16	116,392	—	$0	116,392	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2018-03-15	2018-03-16	273,692	—	$0	273,692	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2018-03-15	2018-03-16	98,029	—	$0	2,111,194	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2018-03-15	2018-03-16	41,687	—	$0	1,372,333	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-12-15	2017-12-19	639,584	—	$0	319,791	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-12-15	2017-12-19	373,091	—	$0	186,545	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-12-15	2017-12-19	639,584	$12.02	$7.69M	2,537,431	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-12-15	2017-12-19	524,266	$19.30	$10.12M	2,013,165	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-12-15	2017-12-19	373,091	$12.02	$4.48M	1,636,469	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-12-15	2017-12-19	305,823	$19.30	$5.90M	1,330,646	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-11-13	2017-11-14	319,792	—	$0	959,375	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-11-13	2017-11-14	186,545	—	$0	559,636	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-11-13	2017-11-14	319,792	$12.02	$3.84M	1,897,847	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-11-13	2017-11-14	186,545	$12.02	$2.24M	1,263,378	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-09-13	2017-09-15	176,987	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-09-13	2017-09-15	138,632	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-09-13	2017-09-15	153,882	$15.86	$2.44M	1,578,055	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-09-13	2017-09-15	176,987	$11.53	$2.04M	1,731,937	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-09-13	2017-09-15	138,632	$11.53	$1.60M	1,197,337	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-09-13	2017-09-15	120,504	$15.87	$1.91M	1,076,833	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-05-23	2017-05-25	264,895	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2017-05-23	2017-05-25	382,448	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-05-23	2017-05-25	264,895	$11.51	$3.05M	1,058,705	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2017-05-23	2017-05-25	382,448	$11.51	$4.40M	1,554,950	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-27	2017-03-28	9,271	$14.27	$132.3K	793,810	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-27	2017-03-28	27,480	$14.27	$392.1K	1,172,502	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-26	2017-03-28	6,704	$13.76	$92.2K	803,081	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-26	2017-03-28	21,799	$13.76	$300.0K	1,199,982	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-17	2017-03-20	23,108	$13.75	$317.7K	1,221,781	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2017-03-17	2017-03-20	9,951	$13.75	$136.8K	809,785	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2017-03-16	2017-03-20	211,213	—	$0	211,213	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2017-03-16	2017-03-20	490,477	—	$0	490,477	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2017-03-16	2017-03-20	156,554	—	$0	1,244,889	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2017-03-16	2017-03-20	67,415	—	$0	819,736	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2016-09-21	2016-09-22	55,081	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-21	2016-09-22	500	$21.45	$10.7K	1,088,335	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-21	2016-09-22	54,581	$20.70	$1.13M	1,088,835	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2016-09-21	2016-09-22	55,081	$16.75	$922.6K	1,143,416	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2016-09-20	2016-09-22	207,350	—	$0	55,081	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2016-09-20	2016-09-22	181,768	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-20	2016-09-22	76,152	$20.73	$1.58M	1,219,533	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2016-09-20	2016-09-22	207,350	$16.75	$3.47M	1,295,685	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-20	2016-09-22	95,213	$21.33	$2.03M	752,321	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-20	2016-09-22	86,555	$20.74	$1.80M	847,534	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2016-09-20	2016-09-22	181,768	$16.75	$3.04M	934,089	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2016-09-20	2016-09-22	131,198	$21.33	$2.80M	1,088,335	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2016-03-27	2016-03-29	8,641	$11.96	$103.3K	752,321	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2016-03-27	2016-03-29	25,856	$11.96	$309.2K	1,088,335	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2016-03-26	2016-03-29	6,704	$11.96	$80.2K	760,962	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2016-03-26	2016-03-29	15,711	$11.96	$187.9K	1,114,191	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2016-03-17	2016-03-21	310,930	—	$0	310,930	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award deriv	2016-03-17	2016-03-21	722,046	—	$0	722,046	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2016-03-17	2016-03-21	184,466	—	$0	1,129,902	SEC↗
AMPH Amphastar Pharmaceuticals,	A Award	2016-03-17	2016-03-21	79,435	—	$0	767,666	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-11	2015-12-11	15,066	$14.05	$211.7K	7,461,594	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-10	2015-12-11	21,915	$14.32	$313.8K	7,476,660	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-09	2015-12-11	26,319	$14.29	$376.1K	7,498,575	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-08	2015-12-08	24,359	$14.50	$353.2K	7,524,894	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-07	2015-12-08	15,046	$14.59	$219.5K	7,549,253	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-04	2015-12-08	28,712	$14.95	$429.2K	7,564,299	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-03	2015-12-03	18,583	$15.42	$286.5K	7,593,011	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-12-01	2015-12-03	20,000	$15.49	$309.8K	7,611,594	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-08-17	2015-08-19	8,481	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-08-17	2015-08-19	8,481	—	$0	0	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-08-17	2015-08-19	8,481	$12.97	$110.0K	920,117	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-08-17	2015-08-19	8,481	$12.97	$110.0K	670,147	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-15	2015-06-17	50,061	—	$0	8,481	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-15	2015-06-17	4,679	$16.29	$76.2K	911,636	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-15	2015-06-17	50,061	$12.97	$649.3K	961,697	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-15	2015-06-17	45,382	$16.29	$739.3K	916,315	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-12	2016-02-03	83,253	—	$0	58,542	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-12	2016-02-03	42,223	—	$0	8,481	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-12	2016-02-03	75,618	$16.15	$1.22M	932,276	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-12	2016-02-03	42,223	$12.97	$547.6K	718,221	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-12	2016-02-03	38,471	$16.17	$622.1K	679,750	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-12	2016-02-03	83,253	$12.97	$1.08M	1,007,894	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-12	2015-06-12	83,253	—	$0	58,542	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-12	2015-06-12	42,223	—	$0	8,481	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-12	2015-06-12	7,635	$16.15	$123.3K	911,636	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-12	2015-06-12	83,253	$12.97	$1.08M	994,889	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-12	2015-06-12	75,618	$16.15	$1.22M	919,271	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-12	2015-06-12	3,752	$16.17	$60.7K	661,666	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-12	2015-06-12	38,471	$16.17	$622.1K	665,418	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-12	2015-06-12	42,223	$12.97	$547.6K	703,889	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-11	2016-02-03	12,930	—	$0	50,704	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-11	2016-02-03	12,860	—	$0	141,795	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-11	2016-02-03	11,664	$16.47	$192.1K	675,998	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-11	2016-02-03	12,930	$12.97	$167.7K	687,662	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-11	2016-02-03	11,600	$16.47	$191.1K	924,641	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-11	2016-02-03	12,860	$12.97	$166.8K	936,241	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-11	2015-06-12	12,860	—	$0	141,795	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-11	2015-06-12	12,930	—	$0	50,704	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-11	2015-06-12	12,860	$12.97	$166.8K	924,496	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-11	2015-06-12	11,600	$16.47	$191.1K	912,896	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-11	2015-06-12	1,266	$16.47	$20.9K	661,666	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-11	2015-06-12	11,664	$16.47	$192.1K	662,932	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-11	2015-06-12	1,260	$16.47	$20.8K	911,636	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-11	2015-06-12	12,930	$12.97	$167.7K	674,596	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-10	2016-02-03	12,975	—	$0	154,655	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-10	2016-02-03	12,619	—	$0	63,634	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-10	2016-02-03	11,411	$16.37	$186.8K	674,732	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-10	2016-02-03	12,619	$12.97	$163.7K	686,143	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-10	2016-02-03	11,731	$16.38	$192.2K	923,381	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-10	2016-02-03	12,975	$12.97	$168.3K	935,112	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-10	2015-06-12	12,975	—	$0	154,655	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-10	2015-06-12	12,619	—	$0	63,634	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-10	2015-06-12	12,619	$12.97	$163.7K	674,285	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-10	2015-06-12	1,244	$16.38	$20.4K	911,636	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-10	2015-06-12	11,731	$16.38	$192.2K	912,880	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-10	2015-06-12	12,975	$12.97	$168.3K	924,611	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-10	2015-06-12	11,411	$16.37	$186.8K	662,874	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-10	2015-06-12	1,208	$16.37	$19.8K	661,666	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-09	2015-06-09	28,433	—	$0	76,253	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-09	2015-06-09	28,324	—	$0	167,630	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-09	2015-06-09	25,700	$16.24	$417.4K	922,137	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-09	2015-06-09	28,324	$12.97	$367.4K	947,837	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-09	2015-06-09	25,800	$16.12	$415.9K	673,524	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-09	2015-06-09	28,433	$12.97	$368.8K	699,324	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-09	2015-06-12	2,633	$16.23	$42.7K	661,666	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-09	2015-06-12	2,624	$16.24	$42.6K	911,636	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-08	2015-06-09	30,066	—	$0	195,954	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-08	2015-06-09	30,152	—	$0	104,686	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-08	2015-06-09	30,066	$12.97	$390.0K	946,533	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-08	2015-06-09	27,020	$16.61	$448.8K	919,513	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-08	2015-06-09	27,100	$16.61	$450.1K	670,891	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-08	2015-06-09	30,152	$12.97	$391.1K	697,991	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-08	2015-06-12	3,052	$16.61	$50.7K	664,299	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-08	2015-06-12	3,046	$16.61	$50.6K	914,260	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-05	2015-06-09	50,162	—	$0	134,838	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise deriv	2015-06-05	2015-06-09	48,980	—	$0	226,020	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-05	2015-06-09	48,980	$12.97	$635.3K	960,616	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-05	2015-06-09	44,149	$16.46	$726.7K	916,467	SEC↗
AMPH Amphastar Pharmaceuticals,	S Sale	2015-06-05	2015-06-09	43,989	$16.47	$724.5K	667,839	SEC↗
AMPH Amphastar Pharmaceuticals,	M Exercise	2015-06-05	2015-06-09	50,162	$12.97	$650.6K	711,828	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-05	2015-06-12	6,173	$16.47	$101.7K	667,351	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-06-05	2015-06-12	4,831	$16.46	$79.5K	917,306	SEC↗
AMPH Amphastar Pharmaceuticals,	F Tax w/h	2015-03-27	2015-06-09	8,641	$15.43	$133.3K	661,666	SEC↗