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Amphastar Pharmaceuticals (AMPH) Shares Outstanding (2016 - 2025)

Amphastar Pharmaceuticals has reported Shares Outstanding over the past 13 years, most recently at $45.6 million for Q4 2025.

  • Quarterly results put Shares Outstanding at $45.6 million for Q4 2025, down 4.14% from a year ago — trailing twelve months through Dec 2025 was $45.6 million (down 4.14% YoY), and the annual figure for FY2025 was $45.6 million, down 4.14%.
  • Shares Outstanding for Q4 2025 was $45.6 million at Amphastar Pharmaceuticals, down from $61.7 million in the prior quarter.
  • Over the last five years, Shares Outstanding for AMPH hit a ceiling of $61.7 million in Q3 2025 and a floor of -$10.3 million in Q1 2023.
  • Median Shares Outstanding over the past 5 years was $58.1 million (2022), compared with a mean of $50.7 million.
  • Biggest five-year swings in Shares Outstanding: surged 870.1% in 2022 and later plummeted 117.85% in 2023.
  • Amphastar Pharmaceuticals' Shares Outstanding stood at $56.4 million in 2021, then rose by 2.96% to $58.1 million in 2022, then increased by 2.2% to $59.4 million in 2023, then fell by 19.82% to $47.6 million in 2024, then fell by 4.14% to $45.6 million in 2025.
  • The last three reported values for Shares Outstanding were $45.6 million (Q4 2025), $46.3 million (Q3 2025), and $61.6 million (Q2 2025) per Business Quant data.