Castle Biosciences (CSTL) Free Cash Flow (2018 - 2026)
Castle Biosciences (CSTL) recorded Free Cash Flow of $12.25 million in Q3 2026, up 57.1% from $7.8 million a year earlier and up 87.0% from the prior quarter.
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Analysis
Castle Biosciences (CSTL) Free Cash Flow (2018 - 2026) Analysis & Trends
On a TTM basis, Castle Biosciences' Free Cash Flow came in at $3.96 million as of Sep 30, 2026, down 84.4% year-over-year; for FY2025, it came in at $28.33 million, down 22.5% from FY2024.
- Annual Free Cash Flow has a five-year compound annual growth rate of 40.8% (FY2020 to FY2025).
- Across earlier years, Free Cash Flow came in at $36.54 million in FY2024, -$19.25 million in FY2023, -$47.29 million in FY2022 and -$22.47 million in FY2021.
- Quarterly Free Cash Flow has ranged from -$34.58 million in Q1 2026 to $29.51 million in Q4 2021 over the past five years.
- On a year-over-year basis, Free Cash Flow rose in three of the last six quarters, with an average decline of 7.9%.
- Per Business Quant, the preceding three quarters came in at $6.55 million (Q2 2026), -$34.58 million (Q1 2026) and $19.75 million (Q4 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | FCF (Qtr) |
|---|---|---|---|---|---|
| 1 | HCA Healthcare | 105.29 Bn | 103.13 Bn | 17.03 Bn | 3.10 Bn |
| 2 | Natera | 46.06 Bn | 41.68 Bn | 513.47 Mn | 5.25 Mn |
| 3 | Labcorp Holdings | 30.09 Bn | 28.19 Bn | 1.11 Bn | 412.20 Mn |
| 4 | Quest Diagnostics | 28.58 Bn | 26.66 Bn | 1.04 Bn | 445.00 Mn |
| 5 | Guardant Health | 20.44 Bn | 16.05 Bn | 236.15 Mn | -37.19 Mn |
| 6 | BrightSpring Health Services | 14.16 Bn | 11.04 Bn | 518.55 Mn | 182.23 Mn |
| 7 | Encompass Health | 13.83 Bn | 14.29 Bn | 1.54 Bn | 127.50 Mn |
| 8 | Tempus AI | 12.69 Bn | 9.84 Bn | 266.70 Mn | -122,000.00 |
| 9 | Davita | 11.06 Bn | 9.92 Bn | 1.13 Bn | 359.34 Mn |
| 10 | Castle Biosciences | 1.04 Bn | -65.97 Mn | 78.97 Mn | 12.25 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Sep 30, 2026 | 12.25 Mn |
| Jun 30, 2026 | 6.55 Mn |
| Mar 31, 2026 | -34.58 Mn |
| Dec 31, 2025 | 19.75 Mn |
| Sep 30, 2025 | 7.80 Mn |
| Jun 30, 2025 | 11.56 Mn |
| Mar 31, 2025 | -10.78 Mn |
| Dec 31, 2024 | 16.80 Mn |
| Sep 30, 2024 | 16.96 Mn |
| Jun 30, 2024 | 18.77 Mn |
| Mar 31, 2024 | -15.99 Mn |
| Dec 31, 2023 | 14.79 Mn |
| Sep 30, 2023 | 2.56 Mn |
| Jun 30, 2023 | -7.82 Mn |
| Mar 31, 2023 | -28.78 Mn |
| Dec 31, 2022 | -7.79 Mn |
| Sep 30, 2022 | -7.26 Mn |
| Jun 30, 2022 | -10.41 Mn |
| Mar 31, 2022 | -21.83 Mn |
| Dec 31, 2021 | 29.51 Mn |
API Access
Castle Biosciences Free Cash Flow API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=free-cash-flow&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "free-cash-flow", "ticker": "CSTL", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=free-cash-flow&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();