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Amphastar Pharma (AMPH)

18.67 -0.20 (1.06%)

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Upcoming Events

- Earnings (8/10/26)

Latest Headlines

Form SCHEDULE 13G Amphastar Pharmaceutical Filed by: DIMENSIONAL FUND ADVISORS LP July 14, 2026 1:27 PM - SEC Filing Form 4 Amphastar Pharmaceutical For: Jul 09 Filed by: Pierce Anthony T July 13, 2026 7:38 PM - SEC Filing Form 3 Amphastar Pharmaceutical For: Jul 09 Filed by: Pierce Anthony T July 13, 2026 7:36 PM - SEC Filing Form 8-K Amphastar Pharmaceutical For: Jul 09 July 13, 2026 6:03 AM - SEC Filing FDA issues warning letter to Amphastar Pharma subsidiary over manufacturing July 8, 2026 6:04 AM - StreetInsider Form 8-K Amphastar Pharmaceutical For: Jul 02 July 8, 2026 6:02 AM - SEC Filing BofA cuts ratings on four biopharma stocks over valuation and catalyst concerns June 29, 2026 11:51 AM - StreetInsider BofA Securities Downgrades Amphastar Pharmaceuticals (AMPH) to Underperform June 29, 2026 6:10 AM - StreetInsider FDA approves second OTC naloxone nasal spray, Rextovy June 16, 2026 10:08 AM - StreetInsider 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 Full Article List