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Castle Biosciences (CSTL) Shares Outstanding (Diluted Average) (2018 - 2025)

Castle Biosciences (CSTL) has disclosed Shares Outstanding (Diluted Average) for 8 consecutive years, with $29.0 million as the latest value for Q4 2025.

  • Quarterly Shares Outstanding (Diluted Average) fell 0.92% to $29.0 million in Q4 2025 from the year-ago period, while the trailing twelve-month figure was $29.0 million through Dec 2025, down 0.92% year-over-year, with the annual reading at $29.0 million for FY2025, 0.92% down from the prior year.
  • Shares Outstanding (Diluted Average) hit $29.0 million in Q4 2025 for Castle Biosciences, roughly flat from $29.1 million in the prior quarter.
  • In the past five years, Shares Outstanding (Diluted Average) ranged from a high of $29.5 million in Q2 2025 to a low of $24.9 million in Q1 2021.
  • Historically, Shares Outstanding (Diluted Average) has averaged $27.0 million across 5 years, with a median of $26.8 million in 2023.
  • Biggest five-year swings in Shares Outstanding (Diluted Average): surged 43.02% in 2021 and later dropped 0.92% in 2025.
  • Year by year, Shares Outstanding (Diluted Average) stood at $25.1 million in 2021, then rose by 3.65% to $26.1 million in 2022, then rose by 2.87% to $26.8 million in 2023, then increased by 9.15% to $29.3 million in 2024, then fell by 0.92% to $29.0 million in 2025.
  • Business Quant data shows Shares Outstanding (Diluted Average) for CSTL at $29.0 million in Q4 2025, $29.1 million in Q3 2025, and $29.5 million in Q2 2025.