Castle Biosciences (CSTL) Total Debt (2018 - 2026)
Castle Biosciences' (CSTL) quarterly Total Debt came in at $13.0 million in Q2 2026, up 8.41% year-over-year from $12.0 million in Q2 2025, and up 10.73% quarter-over-quarter from $11.7 million in Q1 2026.
Castle Biosciences (CSTL) Total Debt (2018 - 2026) Analysis & Trends
Castle Biosciences has disclosed Total Debt across 7 years of filings, most recently posting $13.0 million for Q2 2026.
- In Q2 2026, Total Debt rose 8.41% year-over-year to $13.0 million; the TTM figure through Jun 2026 stood at $13.0 million (up 8.41% YoY), while the FY2025 annual figure was $10.5 million, up 1.68% from the prior year.
- Total Debt came in at $13.0 million for Q2 2026 at Castle Biosciences, up from $11.7 million in the prior quarter.
- In the past five years, Total Debt ranged from a high of $20.8 million in Q1 2022 to a low of $10.0 million in Q1 2024.
- Average Total Debt over 4 years is $11.8 million, with a median of $10.5 million recorded in 2025.
- The largest YoY upside for Total Debt was 19.74% in 2025 against a maximum downside of 0.34% in 2025.
- Over 4 years, Total Debt stood at $20.8 million in 2022, then plunged by 50.59% to $10.3 million in 2024, then increased by 1.68% to $10.5 million in 2025, then grew by 24.04% to $13.0 million in 2026.
- Per Business Quant data, the three most recent Total Debt figures were $13.0 million in Q2 2026, $11.7 million in Q1 2026, and $10.5 million in Q4 2025.
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Total Debt (Qtr) |
|---|---|---|---|---|---|
| 1 | Natera | 53.05 Bn | 51.95 Bn | 486.15 Mn | 160.58 Mn |
| 2 | Quest Diagnostics | 27.19 Bn | 26.87 Bn | 1.03 Bn | 5.65 Bn |
| 3 | Labcorp Holdings | 25.93 Bn | 25.81 Bn | 1.11 Bn | 5.86 Bn |
| 4 | Guardant Health | 23.97 Bn | 22.91 Bn | 219.03 Mn | - |
| 5 | Tempus AI | 13.64 Bn | 12.82 Bn | 274.25 Mn | - |
| 6 | Caris Life Sciences | 8.47 Bn | 7.68 Bn | 182.38 Mn | 393.15 Mn |
| 7 | Sotera Health | 5.35 Bn | 4.99 Bn | 177.96 Mn | 2.15 Bn |
| 8 | BillionToOne | 4.96 Bn | 4.41 Bn | 77.11 Mn | 91.03 Mn |
| 9 | Adaptive Biotechnologies | 4.55 Bn | 4.21 Bn | 51.39 Mn | - |
| 10 | Castle Biosciences | 1.08 Bn | 811.36 Mn | 79.85 Mn | 12.99 Mn |
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 12.99 Mn |
| Mar 31, 2026 | 11.73 Mn |
| Dec 31, 2025 | 10.47 Mn |
| Sep 30, 2025 | 10.05 Mn |
| Jun 30, 2025 | 11.98 Mn |
| Mar 31, 2025 | 11.14 Mn |
| Dec 31, 2024 | 10.30 Mn |
| Sep 30, 2024 | 10.02 Mn |
| Jun 30, 2024 | 10.01 Mn |
| Mar 31, 2024 | 10.00 Mn |
| Mar 31, 2022 | 20.85 Mn |
| Sep 30, 2020 | 22.46 Mn |
| Jun 30, 2020 | 24.74 Mn |
| Mar 31, 2020 | 25.35 Mn |
| Dec 31, 2019 | 25.12 Mn |
| Sep 30, 2019 | 24.90 Mn |
| Jun 30, 2019 | 32.71 Mn |
| Dec 31, 2018 | 24.50 Mn |
Castle Biosciences Total Debt 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=total-debt&ticker=CSTL&period=max&api_key=YOUR_API_KEY
import requests
url = "https://data.businessquant.com/historic"
params = {"slug": "total-debt", "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=total-debt&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();