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Asset Utilization RatioAssets AverageDebt RatioDebt to EquityEBIT MarginEBITDA MarginEBT MarginEnterprise ValueEquity AverageEquity RatioFCF MarginGross MarginInterest Coverage RatioInventory AverageInvested CapitalNet MarginOperating MarginReturn on AssetsReturn on Capital EmployedReturn on EquityReturn on Invested CapitalReturn on SalesTimes Interest Earned

Amphastar Pharmaceuticals (AMPH) Operating Margin (2016 - 2025)

Amphastar Pharmaceuticals has reported Operating Margin over the past 13 years, most recently at 43.06% for Q4 2025.

  • Quarterly results put Operating Margin at 43.06% for Q4 2025, down 6726.0% from a year ago — trailing twelve months through Dec 2025 was 3.61% (down 2446.0% YoY), and the annual figure for FY2025 was 3.61%, down 2446.0%.
  • Operating Margin for Q4 2025 was 43.06% at Amphastar Pharmaceuticals, down from 13.2% in the prior quarter.
  • Over the last five years, Operating Margin for AMPH hit a ceiling of 40.25% in Q3 2023 and a floor of 43.06% in Q4 2025.
  • Median Operating Margin over the past 5 years was 22.98% (2021), compared with a mean of 19.81%.
  • Biggest five-year swings in Operating Margin: soared 2092bps in 2023 and later crashed -6726bps in 2025.
  • Amphastar Pharmaceuticals' Operating Margin stood at 20.06% in 2021, then soared by 40bps to 28.02% in 2022, then rose by 8bps to 30.31% in 2023, then dropped by -20bps to 24.2% in 2024, then tumbled by -278bps to 43.06% in 2025.
  • The last three reported values for Operating Margin were 43.06% (Q4 2025), 13.2% (Q3 2025), and 24.19% (Q2 2025) per Business Quant data.