Castle Biosciences (CSTL) Free Cash Flow (2018 - 2026)
Castle Biosciences' (CSTL) quarterly Free Cash Flow came in at -$34.6 million in Q1 2026, down 273.76% year-on-year from $19.9 million in Q1 2025, and down 164.46% quarter-over-quarter from $53.7 million in Q4 2025.
Castle Biosciences (CSTL) Free Cash Flow (2018 - 2026) Analysis & Trends
Castle Biosciences has disclosed Free Cash Flow across 9 years of filings, most recently posting -$34.6 million for Q1 2026.
- Free Cash Flow for Q1 2026 came in at -$34.6 million, down 273.76% year-over-year; the trailing twelve-month figure through Mar 2026 was $36.9 million (down 41.56% YoY), and the FY2025 annual result was $62.2 million, down 4.06% from the prior year.
- Free Cash Flow came in at -$34.6 million for Q1 2026 at Castle Biosciences, down from $53.7 million in the prior quarter.
- In the past five years, Free Cash Flow ranged from a high of $53.7 million in Q4 2025 to a low of -$34.6 million in Q1 2026.
- The 5-year median for Free Cash Flow is -$3.6 million (2022), against an average of $1.8 million.
- Across the five-year window, Free Cash Flow plunged 389.89% in 2022 and soared 977.21% in 2024, its largest moves.
- Castle Biosciences' Free Cash Flow stood at -$3.6 million in 2022, then surged by 516.62% to $14.8 million in 2023, then soared by 205.02% to $45.1 million in 2024, then grew by 18.9% to $53.7 million in 2025, then tumbled by 164.46% to -$34.6 million in 2026.
- The last three Free Cash Flow figures came in at -$34.6 million (Q1 2026), $53.7 million (Q4 2025), and $616000.0 (Q3 2025), per Business Quant data.
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Free Cash Flow (Qtr) |
|---|---|---|---|---|---|
| 1 | Waters | 30,529.42 Bn | 30,528.96 Bn | 1.11 Bn | -42.00 Mn |
| 2 | Thermo Fisher Scientific | 183.75 Bn | 180.50 Bn | 7.74 Bn | 816.00 Mn |
| 3 | Danaher | 133.13 Bn | 127.43 Bn | 3.59 Bn | 1.09 Bn |
| 4 | Idexx Laboratories | 46.14 Bn | 45.94 Bn | 722.74 Mn | 257.97 Mn |
| 5 | Agilent Technologies | 38.20 Bn | 36.39 Bn | 990.00 Mn | 201.00 Mn |
| 6 | Natera | 31.50 Bn | 30.40 Bn | 696.04 Mn | 18.03 Mn |
| 7 | Iqvia Holdings | 31.34 Bn | 29.36 Bn | 1.36 Bn | 491.00 Mn |
| 8 | Illumina | 24.51 Bn | 23.36 Bn | 721.00 Mn | 251.00 Mn |
| 9 | Mettler Toledo International | 23.53 Bn | 23.47 Bn | 555.82 Mn | 122.38 Mn |
| 10 | Castle Biosciences | 629.76 Mn | 368.04 Mn | 63.15 Mn | -34.58 Mn |
Historic Data
Download Data| Date | Value |
|---|---|
| Mar 31, 2026 | -34.58 Mn |
| Mar 31, 2026 | -34.58 Mn |
| Dec 31, 2025 | 53.65 Mn |
| Dec 31, 2025 | 53.65 Mn |
| Sep 30, 2025 | 616,000.00 |
| Sep 30, 2025 | 616,000.00 |
| Jun 30, 2025 | 17.22 Mn |
| Jun 30, 2025 | 17.22 Mn |
| Mar 31, 2025 | -9.25 Mn |
| Mar 31, 2025 | -9.25 Mn |
| Dec 31, 2024 | 45.12 Mn |
| Dec 31, 2024 | 45.12 Mn |
| Sep 30, 2024 | 16.96 Mn |
| Sep 30, 2024 | 16.96 Mn |
| Jun 30, 2024 | 10.32 Mn |
| Jun 30, 2024 | 10.32 Mn |
| Mar 31, 2024 | -7.53 Mn |
| Mar 31, 2024 | -7.53 Mn |
| Dec 31, 2023 | 14.79 Mn |
| Dec 31, 2023 | 14.79 Mn |