Castle Biosciences Company Leadership

CSTL Stock  USD 32.23  0.52  1.59%   
Castle Biosciences' insiders are aggressively selling. The analysis of the overall insider sentiment regarding Castle Biosciences suggests that most insiders are panicking. Castle Biosciences employs about 823 people. The company is managed by 15 executives with a total tenure of roughly 9 years, averaging almost 0.0 years of service per executive, having 54.87 employees per reported executive.
Derek Maetzold  CEO
President CEO, Founder, Director
Toby Juvenal  President
Vice President of Sales

Insider Sentiment 0

 Mostly Selling

 
Selling
 
Buying

Latest Trades

2026-02-04Derek J MaetzoldDisposed 817 @ 37.99View
2026-02-03Derek J MaetzoldDisposed 3200 @ 39.91View
2026-01-20Derek J MaetzoldDisposed 4017 @ 40.01View
2026-01-06Derek J MaetzoldDisposed 1339 @ 40.1View
2026-01-05Derek J MaetzoldDisposed 2678 @ 38.09View
2025-12-22Derek J MaetzoldDisposed 830 @ 40.35View
2025-12-17Kristen M OelschlagerDisposed 14888 @ 39.31View
2025-12-04Derek J MaetzoldDisposed 1339 @ 40.03View
2025-11-25Derek J MaetzoldDisposed 5115 @ 40.05View
2025-11-20Tobin W JuvenalDisposed 4693 @ 35.58View
2025-11-05Derek J MaetzoldDisposed 2678 @ 31.85View
2025-11-04Derek J MaetzoldDisposed 6695 @ 30.44View
2025-10-31Kristen M OelschlagerDisposed 12678 @ 25.04View
2025-10-20Derek J MaetzoldDisposed 1339 @ 22.44View
2025-09-17Derek J MaetzoldDisposed 1339 @ 21.97View
2025-04-21Derek J MaetzoldDisposed 1236 @ 21.52View
2025-04-08Derek J MaetzoldDisposed 213 @ 20.03View
2025-03-26Derek J MaetzoldDisposed 1236 @ 20.3View
2025-03-10Derek J MaetzoldDisposed 2130 @ 19.52View
Monitoring Castle Biosciences' insider sentiment can offer insights into its future performance, as insiders often have access to more information about their company's operations, financial health, and upcoming initiatives than the general public. However, it's essential to note that insider trading is regulated by securities laws, and insiders are required to disclose their trades publicly to ensure transparency and prevent unfair advantages based on non-public information.
Check out Trending Equities to better understand how to build diversified portfolios, which includes a position in Castle Biosciences. Also, note that the market value of any company could be closely tied with the direction of predictive economic indicators such as signals in persons.
For more information on how to buy Castle Stock please use our How to buy in Castle Stock guide.

Castle Biosciences' Workforce Through the Years

Please note that employee historical analysis has become an increasingly important factor for investors assessing the risk associated with Castle Biosciences' future performance. Based on our forecasts, it is anticipated that Castle will maintain a workforce of about 820 employees by March 2026.
 
Covid
 
Interest Hikes

Castle Biosciences Management Team Effectiveness

The company has return on total asset (ROA) of (0.0172) % which means that it has lost $0.0172 on every $100 spent on assets. This is way below average. Similarly, it shows a return on stockholder's equity (ROE) of (0.027) %, meaning that it created substantial loss on money invested by shareholders. Castle Biosciences' management efficiency ratios could be used to measure how well Castle Biosciences manages its routine affairs as well as how well it operates its assets and liabilities. At this time, Castle Biosciences' Return On Tangible Assets are quite stable compared to the past year. Return On Capital Employed is expected to rise to 0.02 this year, although the value of Return On Equity will most likely fall to 0.04. At this time, Castle Biosciences' Non Current Assets Total are quite stable compared to the past year. Non Currrent Assets Other is expected to rise to about 2.5 M this year, although the value of Net Tangible Assets will most likely fall to about 181.4 M.
The value of Common Stock Shares Outstanding is expected to slide to about 21.3 M. Net Loss is expected to rise to about (57.4 M) this yearCastle Biosciences holds a total of 29.19 Million outstanding shares. The majority of Castle Biosciences outstanding shares are owned by other corporate entities. These outside corporations are usually referred to as non-private investors looking to acquire positions in Castle Biosciences to benefit from reduced commissions. Consequently, institutional investors are subject to a different set of regulations than regular investors in Castle Biosciences. Please pay attention to any change in the institutional holdings of Castle Biosciences as this could imply that something significant has changed or is about to change at the company. Please note that no matter how many assets the company secures, if the real value of the firm is less than the current market value, you may not be able to make money on it.
 
Shares in Circulation  
First Issued
2018-03-31
Previous Quarter
29.5 M
Current Value
29.1 M
Avarage Shares Outstanding
22.4 M
Quarterly Volatility
6.7 M
 
Covid
 
Interest Hikes
Some institutional investors establish a significant position in stocks such as Castle Biosciences in order to find ways to drive up its value. Retail investors, on the other hand, need to know that institutional holders can own millions of shares of Castle Biosciences, and when they decide to sell, the stock will often sell-off, which may instantly impact shareholders' value. So, traders who get in early or near the beginning of the institutional investor's buying cycle could potentially generate profits.

Castle Biosciences Workforce Comparison

Castle Biosciences is rated below average in number of employees category among its peers. The total workforce of Health Care industry is currently estimated at about 15,859. Castle Biosciences holds roughly 823 in number of employees claiming about 5% of equities under Health Care industry.

Castle Biosciences Profit Margins

The company has Profit Margin (PM) of (0.04) %, which may suggest that it does not properly executes on its current pricing strategies or is unable to control all of the operational costs. This is way below average. Similarly, it shows Operating Margin (OM) of (0.08) %, which suggests for every $100 dollars of sales, it generated a net operating loss of $0.08.
Current ValueLast YearChange From Last Year 10 Year Trend
Gross Profit Margin0.630.74
Fairly Down
Slightly volatile

Castle Biosciences Insider Trading History

Some recent studies suggest that insider trading raises the cost of capital for securities issuers and decreases overall economic growth. Trading by specific Castle Biosciences insiders, such as employees or executives, is commonly permitted as long as it does not rely on Castle Biosciences' material information that is not in the public domain. Local jurisdictions usually require such trading to be reported in order to monitor insider transactions. In many U.S. states, trading conducted by corporate officers, key employees, directors, or significant shareholders must be reported to the regulator or publicly disclosed, usually within a few business days of the trade. In these cases, Castle Biosciences insiders must file a Form 4 with the U.S. Securities and Exchange Commission (SEC) when buying or selling shares of their own companies.
 
Housing Crash
 
Credit Downgrade
 
Yuan Drop
 
Covid
 
Interest Hikes
Buy/Sell Ratio# Purchases Trades# Sales TradesTotal Shares PurchasedTotal Shares Sold
2026-03-01
1.3333
8
6
 177,514 
 12,051 
2025-12-01
0.2444
11
45
 119,360 
 301,556 
2025-09-01
0.2667
4
15
 98,015 
 229,168 
2025-06-01
0.5556
15
27
 158,332 
 85,874 
2025-03-01
0.0469
3
64
 65,353 
 84,385 
2024-12-01
0.1556
14
90
 129,436 
 263,976 
2024-09-01
0.2097
13
62
 201,953 
 95,985 
2024-06-01
0.2881
17
59
 135,148 
 127,442 
2024-03-01
0.186
8
43
 317,042 
 102,643 
2023-12-01
0.0732
15
205
 137,447 
 366,177 
2023-09-01
0.0476
2
42
 880.00 
 98,624 
2023-06-01
0.2432
18
74
 96,514 
 110,567 
2023-03-01
0.0164
1
61
 6,173 
 103,793 
2022-12-01
0.1417
17
120
 386,975 
 154,413 
2022-06-01
5.0
25
5
 179,433 
 10,146 
2021-12-01
0.1415
15
106
 413,939 
 113,599 
2021-09-01
0.0226
6
266
 28,771 
 348,302 
2021-06-01
0.1429
18
126
 62,430 
 1,042,240 
2021-03-01
0.0105
2
190
 19,729 
 575,598 
2020-12-01
0.0514
9
175
 204,550 
 947,623 
2020-09-01
0.0068
1
147
 13,000 
 981,850 
2020-06-01
0.1458
14
96
 196,228 
 1,637,909 
2019-09-01
0.28
28
100
 8,411,442 
 14,236,227 
2004-09-01
32.0
32
1
 156,833 
 500.00 

Castle Biosciences Notable Stakeholders

A Castle Biosciences stakeholder refers to an individual interested in an outcome of the business. Different stakeholders have different interests, and companies such as Castle Biosciences often face trade-offs trying to please all of them. Castle Biosciences' stakeholders can have a positive or negative influence on the entity's direction, and there are a lot of executives involved in getting Castle Biosciences' stock to the level that pleases all shareholders. Keeping track of the stakeholders is a great way to stay on top of things affecting its ongoing price.
Derek MaetzoldPresident CEO, Founder, DirectorProfile
Toby JuvenalVice President of SalesProfile
Frank StokesCFO TreasurerProfile
Jay PharmDVP MelanomaProfile
Camilla ZuckeroExec CommunicationsProfile
John AbbottVP ControllerProfile
RN RNChief OfficerProfile
Kristen RNChief OfficerProfile
Tobin JuvenalChief OfficerProfile
Kevin DomanVice SalesProfile
Alice IzzoSenior MarketingProfile
Matthew MDSenior MedicalProfile
Keli GreenbergVice ResourcesProfile
Robert CookSenior DevelopmentProfile
Bernhard SpiessCompany SecretaryProfile
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About Castle Biosciences Management Performance

The success or failure of an entity such as Castle Biosciences often depends on how effective the management is. Castle Biosciences management team is responsible for propelling the future growth in the right direction and administering and controlling the business activities and accounting for the results. Ineffective management usually contributes to failure in the company's future performance for all stakeholders equally, but most importantly, for investors. So it is important to measure the effectiveness of Castle management before purchasing its stock. In many ways, it's all about finding the answer to one important question - Are they doing the right thing right now? How would we assess whether the Castle management is utilizing all available resources in the best possible way? Also, how well is the company doing relative to others in its sector and the market as a whole? The answer can be found by analyzing a few important fundamental indicators such as return on assets and return on equity.
Last ReportedProjected for Next Year
Return On Tangible Assets 0.04  0.04 
Return On Capital Employed 0.02  0.02 
Return On Assets 0.03  0.03 
Return On Equity 0.05  0.04 

Castle Biosciences Workforce Analysis

Traditionally, organizations such as Castle Biosciences use manpower efficiency calculations for various incentive schemes, employee appraisal, or as an initiative to improve the processes. However, it can also be used by investors to make long-term investment decisions. The trends in the profit per employee or revenue per employee are measured by net income or revenue divided by the current number of full-time employees over a given time interval. Because workforce needs differ across sectors, these ratios could be used to compare Castle Biosciences within its industry.

Castle Biosciences Manpower Efficiency

Return on Castle Biosciences Manpower

Revenue Per Employee403.5K
Revenue Per Executive22.1M
Net Income Per Employee22.2K
Net Income Per Executive1.2M
Working Capital Per Employee377.6K
Working Capital Per Executive20.7M
When determining whether Castle Biosciences is a strong investment it is important to analyze Castle Biosciences' competitive position within its industry, examining market share, product or service uniqueness, and competitive advantages. Beyond financials and market position, potential investors should also consider broader economic conditions, industry trends, and any regulatory or geopolitical factors that may impact Castle Biosciences' future performance. For an informed investment choice regarding Castle Stock, refer to the following important reports:
Check out Trending Equities to better understand how to build diversified portfolios, which includes a position in Castle Biosciences. Also, note that the market value of any company could be closely tied with the direction of predictive economic indicators such as signals in persons.
For more information on how to buy Castle Stock please use our How to buy in Castle Stock guide.
You can also try the Analyst Advice module to analyst recommendations and target price estimates broken down by several categories.
Is Biotechnology space expected to grow? Or is there an opportunity to expand the business' product line in the future? Factors like these will boost the valuation of Castle Biosciences. Projected growth potential of Castle fundamentally drives upward valuation adjustments. The financial industry is built on trying to define current growth potential and future valuation accurately. Comprehensive Castle Biosciences assessment requires weighing all these inputs, though not all factors influence outcomes equally.
Quarterly Earnings Growth
(0.52)
Earnings Share
(0.44)
Revenue Per Share
11.977
Quarterly Revenue Growth
(0.03)
Return On Assets
(0.02)
The market value of Castle Biosciences is measured differently than its book value, which is the value of Castle that is recorded on the company's balance sheet. Investors also form their own opinion of Castle Biosciences' value that differs from its market value or its book value, called intrinsic value, which is Castle Biosciences' true underlying value. Investors use various methods to calculate intrinsic value and buy a stock when its market value falls below its intrinsic value. Because Castle Biosciences' market value can be influenced by many factors that don't directly affect Castle Biosciences' underlying business (such as a pandemic or basic market pessimism), market value can vary widely from intrinsic value.
It's important to distinguish between Castle Biosciences' intrinsic value and market price, which are calculated using different methodologies. Investment decisions regarding Castle Biosciences should consider multiple factors including financial performance, growth metrics, competitive position, and professional analysis. Meanwhile, Castle Biosciences' quoted price indicates the marketplace figure where supply meets demand through bilateral consent.