Castle Biosciences (CSTL) Research & Development (2018 - 2026)
Castle Biosciences' (CSTL) quarterly Research & Development came in at $14.5 million in Q2 2026, up 13.73% year-over-year from $12.8 million in Q2 2025, and up 0.8% quarter-over-quarter from $14.4 million in Q1 2026.
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Analysis
Castle Biosciences (CSTL) Research & Development (2018 - 2026) Analysis & Trends
Castle Biosciences has disclosed Research & Development across 9 years of filings, most recently posting $14.5 million for Q2 2026.
- In Q2 2026, Research & Development rose 13.73% year-over-year to $14.5 million; the TTM figure through Jun 2026 stood at $55.4 million (up 12.08% YoY), while the FY2025 annual figure was $51.8 million, changed 0.37% from the prior year.
- Research & Development came in at $14.5 million for Q2 2026 at Castle Biosciences, up from $14.4 million in the prior quarter.
- In the past five years, Research & Development ranged from a high of $14.5 million in Q2 2026 to a low of $10.8 million in Q1 2022.
- Average Research & Development over 5 years is $12.9 million, with a median of $12.9 million recorded in 2023.
- Year-over-year, Research & Development jumped 82.14% in 2022 and declined 9.54% in 2025.
- Over 5 years, Research & Development stood at $11.3 million in 2022, then rose by 14.9% to $13.0 million in 2023, then slipped by 9.4% to $11.8 million in 2024, then advanced by 14.8% to $13.5 million in 2025, then gained by 7.61% to $14.5 million in 2026.
- Per Business Quant data, the three most recent Research & Development figures were $14.5 million in Q2 2026, $14.4 million in Q1 2026, and $13.5 million in Q4 2025.
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | R&D (Qtr) |
|---|---|---|---|---|---|
| 1 | Natera | 53.05 Bn | 51.95 Bn | 486.15 Mn | 228.07 Mn |
| 2 | Quest Diagnostics | 27.19 Bn | 26.87 Bn | 1.03 Bn | - |
| 3 | Labcorp Holdings | 25.93 Bn | 25.81 Bn | 1.11 Bn | - |
| 4 | Guardant Health | 23.97 Bn | 22.91 Bn | 219.03 Mn | 189.95 Mn |
| 5 | Tempus AI | 13.64 Bn | 12.82 Bn | 274.25 Mn | 52.64 Mn |
| 6 | Caris Life Sciences | 8.47 Bn | 7.68 Bn | 182.38 Mn | 53.76 Mn |
| 7 | Sotera Health | 5.35 Bn | 4.99 Bn | 177.96 Mn | - |
| 8 | BillionToOne | 4.96 Bn | 4.41 Bn | 77.11 Mn | 17.32 Mn |
| 9 | Adaptive Biotechnologies | 4.55 Bn | 4.21 Bn | 51.39 Mn | 26.41 Mn |
| 10 | Castle Biosciences | 1.08 Bn | 811.36 Mn | 79.85 Mn | 14.54 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 14.54 Mn |
| Mar 31, 2026 | 14.43 Mn |
| Dec 31, 2025 | 13.52 Mn |
| Sep 30, 2025 | 12.96 Mn |
| Jun 30, 2025 | 12.79 Mn |
| Mar 31, 2025 | 12.59 Mn |
| Dec 31, 2024 | 11.77 Mn |
| Sep 30, 2024 | 12.32 Mn |
| Jun 30, 2024 | 14.14 Mn |
| Mar 31, 2024 | 13.81 Mn |
| Dec 31, 2023 | 12.99 Mn |
| Sep 30, 2023 | 12.92 Mn |
| Jun 30, 2023 | 13.31 Mn |
| Mar 31, 2023 | 14.39 Mn |
| Dec 31, 2022 | 11.31 Mn |
| Sep 30, 2022 | 10.91 Mn |
| Jun 30, 2022 | 11.93 Mn |
| Mar 31, 2022 | 10.76 Mn |
| Dec 31, 2021 | 9.45 Mn |
| Sep 30, 2021 | 7.50 Mn |
API Access
Castle Biosciences Research & Development 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=research-and-development&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "research-and-development", "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=research-and-development&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();