CSTL - NASDAQ
Castle Biosciences, Inc.
$20.39
+3.4%Castle Biosciences, Inc., a commercial-stage diagnostics company, focuses to provide diagnostic and prognostic testing services for dermatological cancers. Its lead product is DecisionDx-Melanoma, a multi-gene expression profile (GEP) test to identify the risk of metastasis for patients diagnosed with invasive cutaneous melanoma. The company also offers DecisionDx-UM test, a proprietary GEP test that predicts the risk of metastasis for patients with uveal melanoma, a rare eye cancer; DecisionDx-SCC, a proprietary 40-gene expression profile test that uses an individual patient's tumor biology to predict individual risk of squamous cell carcinoma metastasis for patients with one or more risk factors; and DecisionDx DiffDx-Melanoma and myPath Melanoma, a proprietary GEP test to diagnose suspicious pigmented lesions. It offers test services through physicians and their patients. The company was founded in 2007 and is headquartered in Friendswood, Texas.
At a Glance
Live SnapshotCastle Biosciences, Inc. Profit Bridge
Profitability Analysis
Gross Margin
Exceptional pricing power and cost management. The company retains over half of revenue after direct costs.
Operating Margin
Operating losses indicate the core business is unprofitable. Requires restructuring or revenue growth.
Net Profit Margin
Net losses indicate the company is burning cash. Sustainability depends on path to profitability.
Profitability Insight
Margin squeeze alert: Healthy gross margins but weak operating margins suggest excessive operating expenses. Cost optimization could unlock significant value.
Castle Biosciences, Inc. Income Statement
CSTL • NASDAQ
| Castle Biosciences, Inc. Income Statement | Dec 2025 | Dec 2024 | Dec 2023 | Dec 2022 | Dec 2021 | Dec 2020 | Dec 2019 | Dec 2018 | Dec 2017 |
|---|---|---|---|---|---|---|---|---|---|
REVENUE | |||||||||
344.2M | 332.1M | 219.8M | 137M | 94.1M | 62.6M | 51.9M | 22.8M | 13.8M | |
GROSS PROFIT | |||||||||
(107.9M) | (60.2M) | (45M) | (32M) | (15.8M) | (9.7M) | (7.3M) | (5.3M) | (4.9M) | |
236.3M | 271.9M | 174.8M | 105M | 78.3M | 53M | 44.6M | 17.5M | 8.8M | |
OPERATING INCOME | |||||||||
(279.2M) | (263.2M) | (242.8M) | (177.9M) | (118.3M) | (59.5M) | (37.2M) | (21.3M) | (19.7M) | |
(229.3M) | (200M) | (180.2M) | (143M) | (86.7M) | (48.1M) | (29.8M) | (16.5M) | (15.3M) | |
(51.9M) | (52M) | (53.6M) | (44.9M) | (29.6M) | (13.3M) | (7.4M) | (4.9M) | (4.5M) | |
-42.8M | 8.7M | -68M | -72.9M | -40.1M | -6.5M | 7.3M | -3.8M | -10.9M | |
PRE-TAX INCOME | |||||||||
(86K) | (577K) | (11K) | (17K) | (1K) | (2.6M) | (4.6M) | (2.3M) | (1.6M) | |
11.7M | 12.3M | 10.6M | 4M | 67K | -2.3M | -4.3M | -2.3M | -1.6M | |
-2M | (11.1M) | (9M) | -10M | (2M) | -1.9M | (0.0) | (0.0) | (163.3K) | |
13.3M | 12.9M | 10.6M | 4M | 67K | -3.7M | -2M | -2.5M | -1.5M | |
-29.5M | 21.6M | -57.4M | -68.9M | -40M | -10.2M | 5.3M | -6.4M | -12.4M | |
NET INCOME | |||||||||
-5.4M | (3.3M) | (101K) | -1.8M | -8.7M | (84K) | (72K) | (8.6K) | (9.7K) | |
-24.2M | 18.2M | -57.5M | -67.1M | -31.3M | -10.3M | 5.3M | -6.4M | -12.4M |
SEC Filings
CSTL - Filing history and reports
| Filing Type | Filing Date | Period Ending | Fiscal Year | Actions |
|---|---|---|---|---|
8-K 8-K 2026 N/A | May 29, 2026 | May 28, 2026 | 2026 | |
10-Q 10-Q 2026 Q1 Q1 | May 06, 2026 | March 31, 2026 | 2026 | |
8-K 8-K 2026 N/A | May 06, 2026 | May 06, 2026 | 2026 | |
DEF 14A DEF 14A 2026 N/A | April 08, 2026 | May 28, 2026 | 2026 | |
10-K 10-K 2025 FY FY | February 26, 2026 | December 31, 2025 | 2025 | |
8-K 8-K 2026 N/A | February 26, 2026 | February 26, 2026 | 2026 | |
8-K 8-K 2026 N/A | January 13, 2026 | January 11, 2026 | 2026 | |
10-Q 10-Q 2025 Q3 Q3 | November 03, 2025 | September 30, 2025 | 2025 | |
8-K 8-K 2025 N/A | November 03, 2025 | November 03, 2025 | 2025 | |
8-K 8-K 2025 N/A | August 08, 2025 | August 05, 2025 | 2025 |
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