Castle Biosciences (CSTL) Operating Expenses (2018 - 2026)
Castle Biosciences' Operating Expenses came in at $106.62 million for Q2 2026, up 17.9% from $90.44 million a year earlier and up 4.4% from the prior quarter.
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Analysis
Castle Biosciences (CSTL) Operating Expenses (2018 - 2026) Analysis & Trends
Over the trailing twelve months to Jun 30, 2026, Castle Biosciences reported Operating Expenses of $389.39 million, up 5.4% year-over-year; for FY2025, it came in at $387.04 million, up 19.7% from FY2024.
- Operating Expenses has increased in each of the last seven years, with a five-year compound annual growth rate of 41.1% (FY2020 to FY2025).
- Going back by year, Operating Expenses was $323.4 million in FY2024 (+12.4%), $287.77 million in FY2023 (+37.1%), $209.89 million in FY2022 (+56.4%) and $134.16 million in FY2021 (+93.9%).
- The Q2 2026 figure represents the highest quarterly Operating Expenses since Q1 2025.
- Year-over-year, Operating Expenses increased in seven of the last eight quarters, with growth averaging 14.2%.
- The fastest year-over-year change in Operating Expenses over five years came in Q4 2021 (growth of 97.8%), and the weakest in Q1 2026 (a decline of 11.9%).
- Business Quant data shows CSTL's Operating Expenses at $102.09 million (Q1 2026), $90.84 million (Q4 2025) and $89.85 million (Q3 2025) in the three quarters before Q2 2026.
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Opex (Qtr) |
|---|---|---|---|---|---|
| 1 | HCA Healthcare | 101.22 Bn | 97.23 Bn | - | 17.74 Bn |
| 2 | Natera | 59.29 Bn | 54.98 Bn | 485.19 Mn | 828.54 Mn |
| 3 | Quest Diagnostics | 26.56 Bn | 24.69 Bn | 1.03 Bn | 2.58 Bn |
| 4 | Labcorp Holdings | 26.41 Bn | 24.16 Bn | 1.11 Bn | 582.30 Mn |
| 5 | Tenet Healthcare | 22.49 Bn | 11.49 Bn | - | - |
| 6 | Guardant Health | 22.12 Bn | 18.19 Bn | 219.03 Mn | 464.10 Mn |
| 7 | BrightSpring Health Services | 12.91 Bn | 11.24 Bn | 492.75 Mn | 362.36 Mn |
| 8 | Fresenius Medical Care AG | 12.56 Bn | 4.51 Bn | 1.52 Bn | 901.58 Mn |
| 9 | Tempus AI | 12.17 Bn | 9.20 Bn | 246.50 Mn | 458.40 Mn |
| 10 | Castle Biosciences | 1.05 Bn | -67.48 Mn | 79.85 Mn | 106.62 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 106.62 Mn |
| Mar 31, 2026 | 102.09 Mn |
| Dec 31, 2025 | 90.84 Mn |
| Sep 30, 2025 | 89.85 Mn |
| Jun 30, 2025 | 90.44 Mn |
| Mar 31, 2025 | 115.92 Mn |
| Dec 31, 2024 | 82.26 Mn |
| Sep 30, 2024 | 80.70 Mn |
| Jun 30, 2024 | 81.99 Mn |
| Mar 31, 2024 | 78.45 Mn |
| Dec 31, 2023 | 71.78 Mn |
| Sep 30, 2023 | 71.13 Mn |
| Jun 30, 2023 | 71.30 Mn |
| Mar 31, 2023 | 73.56 Mn |
| Dec 31, 2022 | 61.17 Mn |
| Sep 30, 2022 | 58.55 Mn |
| Jun 30, 2022 | 38.81 Mn |
| Mar 31, 2022 | 51.37 Mn |
| Dec 31, 2021 | 40.21 Mn |
| Sep 30, 2021 | 35.29 Mn |
API Access
Castle Biosciences Operating Expenses 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=operating-expenses&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "operating-expenses", "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=operating-expenses&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();