Insider · CIK 0001611281

Stephen B. Shohet

Period1M 3M 6M 1Y 2Y All datashares as filed — not split-adjusted

Open-market buys & salesbuys $0 · 0sales $4.2M · 14net −$4.2M

Reported trades — common stock

Trade	Reported (ET)	Company	Shares	Avg price	Total	Owned after	Δ stake	Flags
Dec 10, 2018 SForm 4 →	Dec 12, 8:37 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	58,557	$21.72	$1,271,782	30,706	−65.6%	plan?
Dec 10, 2018 MForm 4 →	Dec 12, 8:37 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	58,557	$14.66	$858,446	89,263	—	plan?
Jun 7, 2018 AForm 4 →	Jun 11, 8:15 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	6,590	—	—	30,706	—	plan?
Dec 14, 2017 SForm 4 →	Dec 14, 8:03 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,866	$18.87	$148,430	24,116	−24.6%	plan?
Dec 14, 2017 MForm 4 →	Dec 14, 8:03 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,866	$10.77	$84,717	31,982	—	plan?
Dec 7, 2017 SForm 4 →	Dec 8, 4:30 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.34	$144,210	24,116	−24.6%	plan?
Dec 7, 2017 MForm 4 →	Dec 8, 4:30 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Nov 30, 2017 SForm 4 →	Nov 30, 7:38 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$19.25	$151,344	24,116	−24.6%	plan?
Nov 30, 2017 MForm 4 →	Nov 30, 7:38 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Nov 22, 2017 SForm 4 →	Nov 24, 8:00 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.94	$148,895	24,116	−24.6%	plan?
Nov 22, 2017 MForm 4 →	Nov 24, 8:00 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Nov 16, 2017 SForm 4 →	Nov 17, 8:02 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.04	$141,862	24,116	−24.6%	plan?
Nov 16, 2017 MForm 4 →	Nov 17, 8:02 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Nov 9, 2017 SForm 4 →	Nov 9, 9:04 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.55	$145,845	24,116	−24.6%	plan?
Nov 9, 2017 MForm 4 →	Nov 9, 9:04 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Nov 2, 2017 SForm 4 →	Nov 3, 4:05 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.37	$144,460	24,116	−24.6%	plan?
Nov 2, 2017 MForm 4 →	Nov 3, 4:05 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Oct 26, 2017 SForm 4 →	Oct 26, 6:21 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.39	$144,618	24,116	−24.6%	plan?
Oct 26, 2017 MForm 4 →	Oct 26, 6:21 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Oct 19, 2017 SForm 4 →	Oct 19, 8:01 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.34	$144,195	24,116	−24.6%	plan?
Oct 19, 2017 MForm 4 →	Oct 19, 8:01 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Oct 12, 2017 SForm 4 →	Oct 13, 8:02 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$18.73	$147,219	24,116	−24.6%	plan?
Oct 12, 2017 MForm 4 →	Oct 13, 8:02 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	$10.77	$84,674	31,978	—	plan?
Jun 8, 2017 AForm 4 →	Jun 12, 8:15 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	5,844	—	—	24,116	—	plan?
Aug 12, 2016 SForm 4 →	Aug 16, 8:32 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	48,375	$18.24	$882,281	18,272	−72.6%	plan?
Aug 12, 2016 MForm 4 →	Aug 16, 8:32 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	48,375	$14.44	$698,757	28,942	—	plan?
Jun 9, 2016 AForm 4 →	Jun 13, 8:32 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	6,086	—	—	18,272	—	plan?
Dec 16, 2015 SForm 4 →	Dec 17, 7:21 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	30,770	$14.19	$436,719	12,186	−71.6%	plan?
Dec 16, 2015 MForm 4 →	Dec 17, 7:21 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	30,770	$11.68	$359,394	27,377	—	plan?
Jul 17, 2015 SForm 4 →	Jul 21, 7:55 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,692	$17.41	$133,923	12,186	−38.7%	plan?
Jul 17, 2015 MForm 4 →	Jul 21, 7:55 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,692	$11.68	$89,843	19,878	—	plan?
May 27, 2015 AForm 4 →	May 29, 8:24 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	8,686	—	—	12,186	—	plan?

Reported trades — derivatives (options, RSUs, warrants)

Trade	Reported (ET)	Company	Shares	Avg price	Total	Owned after	Δ stake
Dec 10, 2018 MForm 4 →	Dec 12, 8:37 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	58,557	—	—	0	—
Jun 7, 2018 AForm 4 →	Jun 11, 8:15 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	16,679	—	—	16,679	—
Dec 14, 2017 MForm 4 →	Dec 14, 8:03 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,866	—	—	0	—
Dec 7, 2017 MForm 4 →	Dec 8, 4:30 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	7,866	—
Nov 30, 2017 MForm 4 →	Nov 30, 7:38 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	15,728	—
Nov 22, 2017 MForm 4 →	Nov 24, 8:00 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	23,590	—
Nov 16, 2017 MForm 4 →	Nov 17, 8:02 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	31,452	—
Nov 9, 2017 MForm 4 →	Nov 9, 9:04 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	39,314	—
Nov 2, 2017 MForm 4 →	Nov 3, 4:05 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	47,176	—
Oct 26, 2017 MForm 4 →	Oct 26, 6:21 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	55,038	—
Oct 19, 2017 MForm 4 →	Oct 19, 8:01 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	62,900	—
Oct 12, 2017 MForm 4 →	Oct 13, 8:02 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,862	—	—	70,762	—
Jun 8, 2017 AForm 4 →	Jun 12, 8:15 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	20,291	—	—	20,291	—
Aug 12, 2016 MForm 4 →	Aug 16, 8:32 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	48,375	—	—	0	—
Jun 9, 2016 AForm 4 →	Jun 13, 8:32 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	25,827	—	—	25,827	—
Dec 16, 2015 MForm 4 →	Dec 17, 7:21 pm EST	Amphastar Pharmaceuticals, Inc.AMPH	30,770	—	—	0	—
Jul 17, 2015 MForm 4 →	Jul 21, 7:55 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	7,692	—	—	30,770	—
May 27, 2015 AForm 4 →	May 29, 8:24 pm EDT	Amphastar Pharmaceuticals, Inc.AMPH	47,782	—	—	47,782	—