Form4insider filings, from the source

Insider · CIK 0001033511

Michael A Zasloff

Files at: AMPH. On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted

Reported trades — common stock

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jun 1, 2026 AForm 4 →Jun 3, 8:34 pm EDTAmphastar Pharmaceuticals, Inc.AMPH8,143——37,667—

Reported trades — derivatives (options, RSUs, warrants)

TradeReported (ET)CompanySharesAvg priceTotalOwned afterΔ stakeFlags
Jun 1, 2026 AForm 4 →Jun 3, 8:34 pm EDTAmphastar Pharmaceuticals, Inc.AMPH17,365——17,365—