AMPH
NASDAQAmphastar Pharmaceuticals Inc.
Price$21.01+0.10 (+0.45%)
01:45 PM07:45 PM
News · 26 weeks47-80%
2025-10-262026-04-19
Mix2990d
- Insider16(55%)
- SEC Filings7(24%)
- Market4(14%)
- Other1(3%)
- Analyst1(3%)
Latest news
25 items- ANALYSTAmphastar Pharmaceuticals downgraded by Jefferies with a new price targetJefferies downgraded Amphastar Pharmaceuticals from Buy to Hold and set a new price target of $22.00
- SECSEC Form DEFA14A filed by Amphastar Pharmaceuticals Inc.DEFA14A - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)
- SECSEC Form DEF 14A filed by Amphastar Pharmaceuticals Inc.DEF 14A - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)
- NEWSAmphastar Pharmaceuticals to Present at the 25th Annual Needham Healthcare ConferenceRANCHO CUCAMONGA, CA / ACCESS Newswire / April 6, 2026 / Amphastar Pharmaceuticals, Inc. (NASDAQ:AMPH) ("Amphastar" or the "Company") announced today that Bill Peters, CFO, Tony Marrs, EVP of Regulatory Affairs and Clinical Operations, and Dan Dischner, SVP of Corp. Communication, will be presenting at the 25th Annual Needham Healthcare Conference on Tuesday, April 14, 2026, at 11:45 am ET. For access to the webcast, visit Amphastar Pharmaceuticals' website at http://ir.amphastar.com. This webcast will be available for 30 days following the presentation.About Amphastar Pharmaceuticals, Inc.Amphastar is a biopharmaceutical company that focuses on developing, manufacturing, and commercializing
- SECAmendment: SEC Form SCHEDULE 13G/A filed by Amphastar Pharmaceuticals Inc.SCHEDULE 13G/A - Amphastar Pharmaceuticals, Inc. (0001297184) (Subject)
- INSIDEREVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 1,033 shares, decreasing direct ownership by 0.84% to 121,892 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,225 shares, decreasing direct ownership by 0.71% to 171,554 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERCFO, EVP & TREASURER Peters William J covered exercise/tax liability with 1,973 shares, decreasing direct ownership by 1% to 175,063 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERCEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 12,692 shares, decreasing direct ownership by 0.33% to 2,990,052 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- SECAmphastar Pharmaceuticals Inc. filed SEC Form 8-K: Other Events8-K - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)
- INSIDERCFO, EVP & TREASURER Peters William J covered exercise/tax liability with 3,297 shares and was granted 58,693 shares, increasing direct ownership by 46% to 177,036 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSENIOR EVP, PRODUCTION CENTER Zhou Rong was granted 39,432 units of Common Srock and covered exercise/tax liability with 2,215 shares, increasing direct ownership by 27% to 172,779 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSEC Form 4 filed by Amphastar Pharmaceuticals Inc.4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSEC Form 4 filed by Amphastar Pharmaceuticals Inc.4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSEC Form 4 filed by Amphastar Pharmaceuticals Inc.4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSEC Form 4 filed by Amphastar Pharmaceuticals Inc.4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSEC Form 4 filed by Amphastar Pharmaceuticals Inc.4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDEREVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 1,144 shares, decreasing direct ownership by 1% to 89,345 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERCEO & CHIEF SCIENTIFIC OFFICER Zhang Jack Y. covered exercise/tax liability with 8,201 shares, decreasing direct ownership by 0.20% to 2,841,890 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERSENIOR EVP, PRODUCTION CENTER Zhou Rong covered exercise/tax liability with 1,124 shares, decreasing direct ownership by 0.81% to 136,919 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDEREVP CORP ADMIN CENTER Liawatidewi Yakob covered exercise/tax liability with 965 shares, decreasing direct ownership by 1% to 90,489 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- INSIDERCFO, EVP & TREASURER Peters William J covered exercise/tax liability with 1,744 shares, decreasing direct ownership by 1% to 123,786 units (SEC Form 4)4 - Amphastar Pharmaceuticals, Inc. (0001297184) (Issuer)
- SECAmphastar Pharmaceuticals Inc. filed SEC Form 8-K: Leadership Update, Financial Statements and Exhibits8-K - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)
- SECAmphastar Pharmaceuticals Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Financial Statements and Exhibits8-K - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)
- SECSEC Form 10-K filed by Amphastar Pharmaceuticals Inc.10-K - Amphastar Pharmaceuticals, Inc. (0001297184) (Filer)