When was Castle Biosciences founded?

Castle Biosciences was founded in 2008 and raised its 1st funding round 1 year after it was founded.

Where is Castle Biosciences located?

Castle Biosciences is headquartered in Friendswood, United States. It is registered at Friendswood, Texas.

Who is the current CEO of Castle Biosciences?

Derek Maetzold of Castle Biosciences. They have also founded 1 company.

How many employees does Castle Biosciences have?

As of Jun 30, 2026, the latest employee count at Castle Biosciences is 751.

Is Castle Biosciences a funded company?

Castle Biosciences is a funded company, having raised a total of $62M across 17 funding rounds to date. The company's 1st funding round was a $***** Seed round, raised on Mar 20, 2009.

When was the latest funding round of Castle Biosciences?

Castle Biosciences' latest funding was a $***** Post IPO round on Jul 29, 2019, with participation from 0 investor.

What is the annual revenue of Castle Biosciences?

Annual revenue of Castle Biosciences is between $100M and $500M as on Dec 31, 2025

Where does Castle Biosciences rank among its competitors?

Castle Biosciences ranks 1st amongst 17 active competitors, of which 5 are funded. It stands 1st in terms of total funding among its competitors. The most recent competitor to raise funding was AMLo Biosciences, which secured $2.01M in Nov, 2024.

Who are the top competitors of Castle Biosciences?

Castle Biosciences' top competitors include AMLo Biosciences, DermTech and Orlucent. Among them, AMLo Biosciences secured the most recent funding round in November, 2024.

Castle Biosciences - 2026 Company Profile, Team, Funding, Competitors & Financials

Company Details

Provider of diagnostic devices for treating cancer. The company's product includes prognostic tests used for uveal melanoma, esophageal cancer, mesothelioma, cutaneous melanoma, and glioblastoma multiforme. The company has also developed DecisionDx DiffDx-Melanoma to diagnose Melanocytic Lesions and others.

Website: castlebiosciences.com
Social
Email ID: *****@castlebiosciences.com
Phone Number: +1 **********
Registered Address: Friendswood, Texas

Key Metrics

Founded Year

2008

Location

Friendswood, United States

Stage

Public

Total Funding

$62M in 17 rounds

Latest Funding Round

Post IPO, Jul 29, 2019, $*****

Investors

Industry Ventures & 11 more

Ranked

1^st among 17 active competitors

Annual Revenue

$100M - $500M as on Dec 31, 2025

Employee Count

751 as on Jun 30, 2026

Investment & Acquisitions

Previse & 2 more

Similar Companies

AMLo Biosciences & 32 more

Exit Details

Public

View Castle Biosciences' full profile

Castle Biosciences is associated with 1 legal entity given below:

Legal Entity Name	Date of Incorporation	Revenue	Latest Employee Count	Documents
CASTLE BIOSCIENCES INC CIN: 770701774 , United States, Active	Dec 31, 1999	$100M - $500M (As on Dec 31, 2025)	757 (As on Dec 31, 2024)	-

Castle Biosciences got listed on Jul 25, 2019.

Click here to take a look at Castle Biosciences's IPO in detail

Castle Biosciences has raised a total funding of $62M over 17 rounds. Its first funding round was on Mar 20, 2009. Castle Biosciences has 12 institutional investors.

Here is the list of recent funding rounds of Castle Biosciences:

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Date of Funding	Funding Amount	Round Name	Post-Money Valuation	Revenue Multiple	Lead Investors	Other Investors
Jul 29, 2019	9708247	Post IPO	5873650	4984264	2145846	2241427
Mar 18, 2019	3226462	Series F	5991993	9996304	3996651	6957096
May 31, 2018	8225385	Series F	7598455	2256062	2119295	1207326

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View details of Castle Biosciences's funding rounds and investors

The founders of Castle Biosciences is Derek Maetzold.

Here are the details of Castle Biosciences' key team members:

Derek Maetzold: President, CEO and Founder of Castle Biosciences.

View details of Castle Biosciences's Founder profiles and Board Members

Castle Biosciences' employee count trend

Castle Biosciences has 751 employees as of Jun 26. Here is Castle Biosciences's employee count trend over the years:

Employee count trend for Castle Biosciences

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Top competitors of Castle Biosciences include AMLo Biosciences, DermTech and Orlucent. Here is the list of Top 10 competitors of Castle Biosciences, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	Castle Biosciences 2008, Friendswood (United States), Public	Provider of diagnostic devices for treating cancer	$62M	HighGear Ventures, Industry Ventures & 10 others	66/100
2nd	AMLo Biosciences 2017, Newcastle Upon Tyne (United Kingdom), Series A	Developer of a prognostic test for the early detection of cancer	$7.69M	Esperante, Northstar Ventures & 16 others	57/100
3rd	DermTech 1996, San Diego (United States), Acquired	Provider of adhesive patch biopsy for skin cancer diagnostics	$24.4M	RTW Investments, Van Herk Groep & 3 others	54/100
4th	Orlucent 2009, California City (United States), Deadpooled	Innovating mole evaluation with advanced fluorescent molecular imaging technology	-	Emergent Medical Partners, Silicom Ventures	38/100
5th	Veriskin 2014, San Diego (United States), Seed	Developer of tools for the non-invasive diagnosis of skin cancer	$1.68M	Pasadena Angels, ASAP & 9 others	35/100
6th	MELAGENIX 2017, Cologne (Germany), Series A	Developer of molecular diagnostic tests to detect skin cancer	$8.92M	BayBG Venture Capital, Nera 2 Beteiligungs GmbH & Co. KG ... & 6 others	34/100
7th	TeleSkin 2014, Esbjerg (Denmark), Seed	Provider of a mobile application to monitor moles on skin	$1.47M	Seed Capital & 2 others	32/100
8th	Dermagnostix 2018, Freiburg im Breisgau (Germany), Funding Raised	Developer of molecular diagnostic tests for skin diseases	-	EIC Fund, Ascenion & 2 others	32/100
9th	ANAPIX MEDICAL 2016, Meyreuil (France), Funding Raised	Provider of cloud-based software for the diagnosis of skin diseases through imaging	-	P.Factory	31/100
10th	Verisante 2006, Vancouver (Canada), Public	Cancer detection platforms	-	-	30/100

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Castle Biosciences has acquired 3 companies including Previse, AltheaDx and Cernostics. Castle Biosciences has not made any investments as of now.

Here is the list of its acquisitions:

Date of Investment/Acquisition	Type	Company Name	Founded Year	Location
May 05, 2025	Acquisition	Previse	2018	Baltimore (United States)
Apr 04, 2022	Acquisition	AltheaDx	2009	San Diego (United States)
Oct 22, 2021	Acquisition	Cernostics	2008	Pittsburgh (United States)

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Here is the latest report on Castle Biosciences's geography:

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US Fintech Quarter Funding Report

Edition: Quarter 1, 2026 (41 Pages)

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Media has covered Castle Biosciences for a total of 33 events in the last 1 year, 22 of them have been about company updates and 1 about partnerships.