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Amphastar Pharma (AMPH)

19.39 -0.35 (1.77%)

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Upcoming Events

- Earnings (8/10/26)

Latest Headlines

Form 4 Amphastar Pharmaceutical For: Aug 19 Filed by: PRINS RICHARD K June 3, 2026 9:22 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jun 01 Filed by: Lee Howard June 3, 2026 9:20 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jun 01 Filed by: ZASLOFF MICHAEL A June 3, 2026 8:34 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jun 01 Filed by: Gerst Diane G. June 3, 2026 8:33 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jun 01 Filed by: Gaugh David Russell June 3, 2026 8:31 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jun 01 Filed by: Deflin Gayle June 3, 2026 8:30 PM - SEC Filing Form 8-K Amphastar Pharmaceutical For: Jun 01 June 3, 2026 4:16 PM - SEC Filing Amphastar Pharmaceuticals (AMPH) PT Lowered to $20 at Barclays June 3, 2026 3:45 AM - StreetInsider Amphastar Pharmaceuticals to Present at the 2026 Jefferies Healthcare Conference May 27, 2026 6:00 AM - StreetInsider Wells Fargo Downgrades Amphastar Pharmaceuticals (AMPH) to Equal Weight May 14, 2026 5:16 AM - StreetInsider Amphastar Pharmaceuticals (AMPH) PT Lowered to $21 at Piper Sandler May 11, 2026 6:46 AM - StreetInsider Needham Downgrades Amphastar Pharmaceuticals (AMPH) to Hold May 8, 2026 7:10 AM - StreetInsider Amphastar Pharma (AMPH) Misses Q1 EPS by 30c May 8, 2026 1:01 AM - StreetInsider Form 10-Q Amphastar Pharmaceutical For: Mar 31 May 7, 2026 4:49 PM - SEC Filing Form 8-K Amphastar Pharmaceutical For: May 07 May 7, 2026 4:27 PM - SEC Filing Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2026 May 7, 2026 4:05 PM - StreetInsider Amphastar Pharmaceuticals to Present at the 2026 Bank of America Health Care Conference May 6, 2026 6:02 AM - StreetInsider Amphastar Pharmaceuticals to Release First Quarter Earnings and Hold Conference Call on May 7, 2026 April 30, 2026 6:22 AM - StreetInsider Jefferies Downgrades Amphastar Pharmaceuticals (AMPH) to Hold April 20, 2026 4:28 PM - StreetInsider Form ARS Amphastar Pharmaceutical For: Dec 31 April 13, 2026 4:41 PM - SEC Filing Form DEFA14A Amphastar Pharmaceutical April 13, 2026 4:30 PM - SEC Filing Form DEF 14A Amphastar Pharmaceutical For: Jun 01 April 13, 2026 4:18 PM - SEC Filing Amphastar Pharmaceuticals (AMPH) PT Lowered to $23 at Barclays April 8, 2026 3:49 AM - StreetInsider Amphastar Pharmaceuticals to Present at the 25th Annual Needham Healthcare Conference April 6, 2026 6:04 AM - StreetInsider Form SCHEDULE 13G/A Amphastar Pharmaceutical Filed by: VANGUARD GROUP INC March 26, 2026 3:50 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 15 Filed by: Liawatidewi Yakob March 17, 2026 8:18 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 15 Filed by: Zhou Rong March 17, 2026 6:16 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 15 Filed by: PETERS WILLIAM J March 17, 2026 6:14 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 15 Filed by: Luo Mary Z. March 17, 2026 6:12 PM - SEC Filing Form 8-K Amphastar Pharmaceutical For: Mar 12 March 16, 2026 6:07 AM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 09 Filed by: PETERS WILLIAM J March 11, 2026 9:29 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 09 Filed by: Zhou Rong March 11, 2026 8:16 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 09 Filed by: Liawatidewi Yakob March 11, 2026 6:26 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Mar 09 Filed by: Luo Mary Z. March 11, 2026 5:58 PM - SEC Filing Full Article List