CSTL Insider Trading

Insider Ownership Percentage: 6.50%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $3,859,119.55

Castle Biosciences Insider Trading History Chart

This chart shows the insider buying and selling history at Castle Biosciences by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Castle Biosciences Share Price & Price History

Current Price: $25.14
Price Change: Price Decrease of -0.132 (-0.52%)
As of 03/26/2026 10:35 AM ET

This chart shows the closing price history over time for CSTL up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Castle Biosciences Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
3/18/2026Derek J MaetzoldInsiderSell650$25.39$16,503.5021,479View SEC Filing Icon  
3/17/2026Derek J MaetzoldInsiderSell18,650$25.93$483,594.5022,129View SEC Filing Icon  
3/12/2026Tobin W JuvenalInsiderSell20,863$25.24$526,582.1286,825View SEC Filing Icon  
3/5/2026Frank StokesCFOSell6,001$27.98$167,907.9860,085View SEC Filing Icon  
3/5/2026G Bradley ColeDirectorSell7,403$28.47$210,763.4119,309View SEC Filing Icon  
3/3/2026Frank StokesCFOSell7,000$27.44$192,080.0052,483View SEC Filing Icon  
2/4/2026Derek J MaetzoldInsiderSell817$37.99$31,037.8383,698View SEC Filing Icon  
2/3/2026Derek J MaetzoldInsiderSell3,200$39.91$127,712.0084,515View SEC Filing Icon  
1/20/2026Derek J MaetzoldInsiderSell4,017$40.01$160,720.1787,715View SEC Filing Icon  
1/6/2026Derek J MaetzoldInsiderSell1,339$40.10$53,693.9029,513View SEC Filing Icon  
1/5/2026Derek J MaetzoldInsiderSell2,678$38.09$102,005.0230,852View SEC Filing Icon  
12/22/2025Derek J MaetzoldInsiderSell830$40.35$33,490.5033,530View SEC Filing Icon  
12/17/2025Derek J MaetzoldInsiderSell509$40.04$20,380.3634,360View SEC Filing Icon  
12/17/2025Kristen M. OelschlagerCOOSell14,888$39.31$585,247.2812,323View SEC Filing Icon  
12/4/2025Derek J MaetzoldInsiderSell1,339$40.03$53,600.1737,547View SEC Filing Icon  
11/25/2025Derek J MaetzoldInsiderSell5,115$40.05$204,855.7545,822View SEC Filing Icon  
11/20/2025Tobin W JuvenalInsiderSell4,693$35.58$166,976.9484,595View SEC Filing Icon  
11/5/2025Derek J MaetzoldInsiderSell2,678$31.85$85,294.3053,615View SEC Filing Icon  
11/4/2025Derek J MaetzoldInsiderSell6,695$30.44$203,795.8056,293View SEC Filing Icon  
10/31/2025Kristen M. OelschlagerCOOSell12,678$25.04$317,457.1227,569View SEC Filing Icon  
10/20/2025Derek J MaetzoldInsiderSell1,339$22.44$30,047.1662,988View SEC Filing Icon  
9/17/2025Derek J MaetzoldInsiderSell1,339$21.97$29,417.8365,666View SEC Filing Icon  
4/21/2025Derek J MaetzoldInsiderSell1,236$21.52$26,598.7274,627View SEC Filing Icon  
4/8/2025Derek J MaetzoldInsiderSell213$20.03$4,266.3976,886View SEC Filing Icon  
3/26/2025Derek J MaetzoldInsiderSell1,236$20.30$25,090.8077,099View SEC Filing Icon  
3/10/2025Derek J MaetzoldInsiderSell2,130$19.52$41,577.6078,335View SEC Filing Icon  
3/7/2025Derek J MaetzoldInsiderSell22,639$20.12$455,496.6880,465View SEC Filing Icon  
2/5/2025Daniel BradburyDirectorSell7,867$28.17$221,613.39View SEC Filing Icon  
1/13/2025Derek J MaetzoldInsiderSell986$28.03$27,637.5880,818View SEC Filing Icon  
1/6/2025Daniel BradburyDirectorSell7,867$29.14$229,244.381,425View SEC Filing Icon  
1/6/2025Derek J MaetzoldInsiderSell2,715$29.62$80,418.3082,047View SEC Filing Icon  
12/17/2024Derek J MaetzoldInsiderSell9,364$28.34$265,375.7684,762View SEC Filing Icon  
12/5/2024Derek J MaetzoldInsiderSell1,972$31.35$61,822.2085,748View SEC Filing Icon  
11/15/2024Frank StokesCFOSell6,923$29.93$207,205.3930,823View SEC Filing Icon  
11/12/2024Derek J MaetzoldInsiderSell1,972$34.15$67,343.8087,720View SEC Filing Icon  
11/5/2024Tobin W JuvenalInsiderSell3,507$35.56$124,708.9254,178View SEC Filing Icon  
10/14/2024Derek J MaetzoldInsiderSell1,972$32.27$63,636.4491,664View SEC Filing Icon  
10/8/2024Derek J MaetzoldInsiderSell986$30.27$29,846.2293,636View SEC Filing Icon  
10/7/2024Daniel BradburyDirectorSell7,867$29.44$231,604.485,700View SEC Filing Icon  
10/4/2024Derek J MaetzoldInsiderSell986$28.73$28,327.7894,622View SEC Filing Icon  
8/12/2024Daniel BradburyDirectorSell7,883$26.65$210,081.958,550View SEC Filing Icon  
8/7/2024Frank StokesCFOSell10,000$25.70$257,000.0030,823View SEC Filing Icon  
8/1/2024Kristen M. OelschlagerCOOSell12,989$23.06$299,526.34132,836View SEC Filing Icon  
7/29/2024Kristen M. OelschlagerCOOSell2,793$22.06$61,613.58145,825View SEC Filing Icon  
6/3/2024Derek J MaetzoldInsiderSell2,368$23.40$55,411.2057,893View SEC Filing Icon  
5/6/2024Daniel BradburyDirectorSell23,323$24.64$574,678.729,981View SEC Filing Icon  
5/6/2024Derek J MaetzoldInsiderSell2,368$24.72$58,536.9662,629View SEC Filing Icon  
4/23/2024Derek J MaetzoldInsiderSell421$20.11$8,466.3164,997View SEC Filing Icon  
4/12/2024Derek J MaetzoldInsiderSell1,947$20.35$39,621.4565,418View SEC Filing Icon  
4/8/2024Daniel BradburyDirectorSell2,400$20.45$49,080.0017,944View SEC Filing Icon  
4/4/2024Daniel BradburyDirectorSell9,152$21.45$196,310.4022,782View SEC Filing Icon  
4/3/2024Derek J MaetzoldInsiderSell2,368$21.70$51,385.6067,365View SEC Filing Icon  
3/20/2024Derek J MaetzoldInsiderSell2,295$20.27$46,519.6569,806View SEC Filing Icon  
3/7/2024Derek J MaetzoldInsiderSell2,372$20.77$49,266.4472,101View SEC Filing Icon  
3/5/2024Derek J MaetzoldInsiderSell4,131$21.41$88,444.7174,473View SEC Filing Icon  
3/4/2024Daniel BradburyDirectorSell23,323$20.68$482,319.6425,907View SEC Filing Icon  
2/7/2024Daniel BradburyDirectorSell2,074$23.20$48,116.8033,870View SEC Filing Icon  
1/4/2024Daniel BradburyDirectorSell18,223$20.40$371,749.2043,574View SEC Filing Icon  
12/28/2023Derek J MaetzoldInsiderSell3,954$22.17$87,660.1864,084View SEC Filing Icon  
12/26/2023Derek J MaetzoldInsiderSell5,180$21.93$113,597.4076,114View SEC Filing Icon  
12/22/2023Derek J MaetzoldInsiderSell5,224$21.96$114,719.0481,294View SEC Filing Icon  
12/20/2023Derek J MaetzoldInsiderSell5,201$21.05$109,481.0597,517View SEC Filing Icon  
12/18/2023Derek J MaetzoldInsiderSell5,720$20.27$115,944.40108,437View SEC Filing Icon  
12/12/2023Daniel BradburyDirectorSell1,200$20.01$24,012.0050,195View SEC Filing Icon  
12/12/2023Derek J MaetzoldInsiderSell546$20.01$10,925.46130,670View SEC Filing Icon  
12/8/2023Daniel BradburyDirectorSell6,875$20.09$138,118.7550,605View SEC Filing Icon  
12/8/2023Derek J MaetzoldInsiderSell2,322$20.10$46,672.2094,895View SEC Filing Icon  
12/6/2023Daniel BradburyDirectorSell200$20.02$4,004.0052,952View SEC Filing Icon  
12/6/2023Derek J MaetzoldInsiderSell48$20.02$960.9697,217View SEC Filing Icon  
12/4/2023Daniel BradburyDirectorSell4,340$20.08$87,147.2053,020View SEC Filing Icon  
12/4/2023Derek J MaetzoldInsiderSell1,379$20.08$27,690.3297,265View SEC Filing Icon  
12/1/2023Daniel BradburyDirectorSell9,545$20.05$191,377.2554,502View SEC Filing Icon  
12/1/2023Derek J MaetzoldInsiderSell3,235$20.06$64,894.1098,644View SEC Filing Icon  
11/29/2023Daniel BradburyDirectorSell17,342$20.12$348,921.0460,197View SEC Filing Icon  
11/29/2023Derek J MaetzoldInsiderSell5,743$20.13$115,606.59106,389View SEC Filing Icon  
11/24/2023Daniel BradburyDirectorSell800$20.02$16,016.0063,665View SEC Filing Icon  
11/24/2023Derek J MaetzoldInsiderSell287$20.03$5,748.61112,132View SEC Filing Icon  
11/20/2023Daniel BradburyDirectorSell5,755$20.04$115,330.2063,885View SEC Filing Icon  
9/1/2023Daniel BradburyDirectorSell1,802$20.04$36,112.0865,037View SEC Filing Icon  
9/1/2023Derek J MaetzoldInsiderSell718$20.05$14,395.90115,103View SEC Filing Icon  
8/30/2023Daniel BradburyDirectorSell4,632$20.03$92,778.9666,854View SEC Filing Icon  
8/30/2023Derek J MaetzoldInsiderSell1,622$20.03$32,488.66119,905View SEC Filing Icon  
8/3/2023Derek J MaetzoldInsiderSell286$20.10$5,748.60121,527View SEC Filing Icon  
7/7/2023Daniel BradburyDirectorSell50,000$20.39$1,019,500.0067,780View SEC Filing Icon  
7/7/2023Derek J MaetzoldInsiderSell8,376$20.04$167,855.04121,813View SEC Filing Icon  
6/5/2023Ellen GoldbergDirectorBuy4,800$14.38$69,024.009,065View SEC Filing Icon  
5/15/2023Derek J MaetzoldInsiderSell1,538$23.45$36,066.10150,443View SEC Filing Icon  
5/4/2023Daniel BradburyDirectorSell17,643$21.69$382,676.6779,251View SEC Filing Icon  
5/4/2023Derek J MaetzoldInsiderSell2,792$21.64$60,418.88151,981View SEC Filing Icon  
4/12/2023Derek J MaetzoldInsiderSell969$22.61$21,909.09156,596View SEC Filing Icon  
4/5/2023Daniel BradburyDirectorSell7,100$22.20$157,620.0082,780View SEC Filing Icon  
4/3/2023Daniel BradburyDirectorSell10,300$22.14$228,042.0085,720View SEC Filing Icon  
4/3/2023Derek J MaetzoldInsiderSell2,391$22.15$52,960.65157,966View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Castle Biosciences (NASDAQ:CSTL)

92.60% of Castle Biosciences stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at CSTL by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Castle Biosciences Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
3/20/2026Hsbc Holdings PLC19,486$0.76M0.0%-41.4%0.066%Search for SEC Filing on Google Icon
3/3/2026Caitong International Asset Management Co. Ltd2,099$82K0.0%+188.3%0.007%Search for SEC Filing on Google Icon
2/19/2026Invesco Ltd.135,461$5.27M0.0%+142.6%0.464%Search for SEC Filing on Google Icon
2/18/2026Mackenzie Financial Corp37,317$1.46M0.0%+54.2%0.128%Search for SEC Filing on Google Icon
2/18/2026Empowered Funds LLC121,920$4.74M0.0%+24.2%0.418%Search for SEC Filing on Google Icon
2/18/2026XTX Topco Ltd22,125$0.86M0.0%N/A0.076%Search for SEC Filing on Google Icon
2/18/2026Verdad Advisers LP7,085$0.28M0.1%N/A0.024%Search for SEC Filing on Google Icon
2/18/2026Wellington Management Group LLP218,560$8.50M0.0%N/A0.749%Search for SEC Filing on Google Icon
2/18/2026SummitTX Capital L.P.17,410$0.68M0.0%-61.3%0.060%Search for SEC Filing on Google Icon
2/18/2026Tudor Investment Corp ET AL167,178$6.50M0.0%+95.7%0.573%Search for SEC Filing on Google Icon
2/18/2026RTW Investments LP2,115,237$82.28M0.8%N/A7.246%Search for SEC Filing on Google Icon
2/18/2026Palisade Capital Management LP567,777$22.09M0.7%-11.1%1.945%Search for SEC Filing on Google Icon
2/18/2026Millennium Management LLC308,914$12.02M0.0%-46.3%1.058%Search for SEC Filing on Google Icon
2/18/2026Man Group plc11,585$0.45M0.0%N/A0.040%Search for SEC Filing on Google Icon
2/18/2026Inspire Investing LLC12,011$0.47M0.0%-39.6%0.041%Search for SEC Filing on Google Icon
2/18/2026Janus Henderson Group PLC15,037$0.59M0.0%+64.6%0.052%Search for SEC Filing on Google Icon
2/18/2026Engineers Gate Manager LP22,949$0.89M0.0%-50.7%0.079%Search for SEC Filing on Google Icon
2/18/2026Bridgeway Capital Management LLC246,920$9.61M0.2%+39.4%0.846%Search for SEC Filing on Google Icon
2/17/2026Schonfeld Strategic Advisors LLC21,476$0.84M0.0%-75.5%0.074%Search for SEC Filing on Google Icon
2/17/2026AQR Capital Management LLC63,881$2.49M0.0%+25.6%0.219%Search for SEC Filing on Google Icon
2/17/2026Braidwell LP177,183$6.89M0.2%-78.5%0.607%Search for SEC Filing on Google Icon
2/17/2026Cetera Investment Advisers8,935$0.35M0.0%N/A0.031%Search for SEC Filing on Google Icon
2/17/2026Trexquant Investment LP64,605$2.51M0.0%-63.8%0.221%Search for SEC Filing on Google Icon
2/17/2026Jump Financial LLC5,500$0.21M0.0%N/A0.019%Search for SEC Filing on Google Icon
2/17/2026Price T Rowe Associates Inc. MD34,138$1.33M0.0%+4.7%0.117%Search for SEC Filing on Google Icon
2/17/2026Osaic Holdings Inc.36,404$1.42M0.0%+8,822.5%0.125%Search for SEC Filing on Google Icon
2/17/2026California State Teachers Retirement System27,725$1.08M0.0%+12.6%0.095%Search for SEC Filing on Google Icon
2/17/2026Kemnay Advisory Services Inc.889$35K0.0%N/A0.003%Search for SEC Filing on Google Icon
2/17/2026Summit Partners Public Asset Management LLC1,058,725$41.18M0.9%+164.7%3.627%Search for SEC Filing on Google Icon
2/17/2026Graham Capital Management L.P.10,928$0.43M0.0%-48.3%0.037%Search for SEC Filing on Google Icon
2/17/2026Persistent Asset Partners Ltd2,463$96K0.0%N/A0.008%Search for SEC Filing on Google Icon
2/16/2026Squarepoint Ops LLC55,118$2.14M0.0%N/A0.189%Search for SEC Filing on Google Icon
2/16/2026TritonPoint Partners LLC10,777$0.42M0.2%N/A0.037%Search for SEC Filing on Google Icon
2/16/2026Verition Fund Management LLC16,811$0.65M0.0%+7.5%0.058%Search for SEC Filing on Google Icon
2/16/2026Panagora Asset Management Inc.45,995$1.79M0.0%+114.9%0.158%Search for SEC Filing on Google Icon
2/16/2026Eventide Asset Management LLC305,000$11.86M0.2%N/A1.045%Search for SEC Filing on Google Icon
2/16/2026Barclays PLC72,149$2.81M0.0%-1.3%0.247%Search for SEC Filing on Google Icon
2/13/2026The Manufacturers Life Insurance Company 8,487$0.33M0.0%-11.0%0.029%Search for SEC Filing on Google Icon
2/13/2026CANADA LIFE ASSURANCE Co3,244$0.13M0.0%-69.7%0.011%Search for SEC Filing on Google Icon
2/13/2026Schroder Investment Management Group492,161$19.35M0.0%-0.6%1.686%Search for SEC Filing on Google Icon
2/13/2026Birchview Capital LP80,600$3.14M1.8%-27.1%0.276%Search for SEC Filing on Google Icon
2/13/2026Charles Schwab Investment Management Inc.242,535$9.44M0.0%+1.8%0.831%Search for SEC Filing on Google Icon
2/13/2026State Street Corp736,454$28.65M0.0%+1.7%2.523%Search for SEC Filing on Google Icon
2/13/2026Caitong International Asset Management Co. Ltd1,750$68K0.2%+140.4%0.006%Search for SEC Filing on Google Icon
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC69,628$2.71M0.0%+21.2%0.239%Search for SEC Filing on Google Icon
2/13/2026Wells Fargo & Company MN34,212$1.33M0.0%+42.7%0.117%Search for SEC Filing on Google Icon
2/12/2026Wasatch Advisors LP537,241$20.90M0.1%-19.7%1.841%Search for SEC Filing on Google Icon
2/12/2026HRT Financial LP47,654$1.85M0.0%+0.9%0.163%Search for SEC Filing on Google Icon
2/12/2026Orion Porfolio Solutions LLC74,653$2.90M0.0%-2.2%0.256%Search for SEC Filing on Google Icon
2/12/2026Commonwealth Equity Services LLC6,591$0.26M0.0%N/A0.023%Search for SEC Filing on Google Icon
2/12/2026State Board of Administration of Florida Retirement System7,154$0.28M0.0%N/A0.025%Search for SEC Filing on Google Icon
2/12/2026Renaissance Technologies LLC493,100$19.18M0.0%-12.4%1.689%Search for SEC Filing on Google Icon
2/12/2026Dimensional Fund Advisors LP1,143,799$44.50M0.0%-22.4%3.919%Search for SEC Filing on Google Icon
2/12/2026Counterpoint Mutual Funds LLC12,952$0.50M0.0%N/A0.044%Search for SEC Filing on Google Icon
2/12/2026Federated Hermes Inc.660$26K0.0%N/A0.002%Search for SEC Filing on Google Icon
2/12/2026Informed Momentum Co LLC74,138$2.88M0.3%N/A0.254%Search for SEC Filing on Google Icon
2/12/2026New York State Common Retirement Fund233,046$9.07M0.0%+1.3%0.798%Search for SEC Filing on Google Icon
2/12/2026Swiss National Bank57,300$2.23M0.0%+2.3%0.196%Search for SEC Filing on Google Icon
2/12/2026Nuveen LLC524,681$20.41M0.0%-45.2%1.798%Search for SEC Filing on Google Icon
2/11/2026Empowered Funds LLC121,920$4.74M0.0%+24.2%0.418%Search for SEC Filing on Google Icon
2/11/2026Deutsche Bank AG22,384$0.87M0.0%+34.5%0.077%Search for SEC Filing on Google Icon
2/11/2026Fox Run Management L.L.C.21,884$0.85M0.1%+58.4%0.075%Search for SEC Filing on Google Icon
2/11/2026LPL Financial LLC10,877$0.42M0.0%+15.7%0.037%Search for SEC Filing on Google Icon
2/11/2026Franklin Resources Inc.80,603$3.14M0.0%-19.2%0.276%Search for SEC Filing on Google Icon
2/11/2026JPMorgan Chase & Co.90,032$3.50M0.0%+224.1%0.308%Search for SEC Filing on Google Icon
2/11/2026Los Angeles Capital Management LLC23,631$0.92M0.0%-2.0%0.081%Search for SEC Filing on Google Icon
2/11/2026Parallel Advisors LLC13,986$0.54M0.0%-21.4%0.048%Search for SEC Filing on Google Icon
2/11/2026Globeflex Capital L P3,759$0.15M0.0%N/A0.013%Search for SEC Filing on Google Icon
2/11/2026State of Wyoming3,014$0.12M0.0%N/A0.010%Search for SEC Filing on Google Icon
2/10/2026Goldman Sachs Group Inc.287,235$11.17M0.0%-16.8%0.984%Search for SEC Filing on Google Icon
2/10/2026BNP Paribas Financial Markets150,011$5.84M0.0%+7.2%0.514%Search for SEC Filing on Google Icon
2/10/2026Intech Investment Management LLC11,718$0.46M0.0%-5.4%0.040%Search for SEC Filing on Google Icon
2/9/2026Geode Capital Management LLC714,913$27.82M0.0%+2.3%2.449%Search for SEC Filing on Google Icon
2/9/2026Jackson Creek Investment Advisors LLC11,235$0.44M0.1%N/A0.038%Search for SEC Filing on Google Icon
2/6/2026Intrust Bank NA7,378$0.29M0.0%N/A0.025%Search for SEC Filing on Google Icon
2/6/2026Covestor Ltd998$39K0.0%-51.8%0.003%Search for SEC Filing on Google Icon
2/6/2026Capstone Capital Management Ltd6,446$0.25M0.2%N/A0.022%Search for SEC Filing on Google Icon
2/6/2026ProShare Advisors LLC6,478$0.25M0.0%N/A0.022%Search for SEC Filing on Google Icon
2/2/2026Principal Financial Group Inc.1,807,644$70.32M0.0%+0.7%6.193%Search for SEC Filing on Google Icon
2/2/2026Truist Financial Corp23,628$0.92M0.0%+1.1%0.081%Search for SEC Filing on Google Icon
2/2/2026Strs Ohio12,600$0.49M0.0%+28.6%0.043%Search for SEC Filing on Google Icon
2/2/2026AIGH Capital Management LLC624,719$24.30M5.9%-11.7%2.140%Search for SEC Filing on Google Icon
2/2/2026Kornitzer Capital Management Inc. KS267,733$10.42M0.2%-3.8%0.917%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA5,899$0.23M0.0%N/A0.020%Search for SEC Filing on Google Icon
1/29/2026Cornerstone Investment Partners LLC6,078$0.24M0.0%N/A0.021%Search for SEC Filing on Google Icon
1/29/2026Simon Quick Advisors LLC8,561$0.33M0.0%-36.9%0.029%Search for SEC Filing on Google Icon
1/29/2026UBS Group AG141,873$5.52M0.0%-51.3%0.486%Search for SEC Filing on Google Icon
1/29/2026Advisors Capital Management LLC250,677$9.75M0.1%-1.4%0.859%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.2,199,829$85.57M0.0%+1.3%7.536%Search for SEC Filing on Google Icon
1/29/2026China Universal Asset Management Co. Ltd.4,756$0.19M0.0%-6.5%0.016%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System8,071$0.31M0.0%N/A0.028%Search for SEC Filing on Google Icon
1/28/2026Universal Beteiligungs und Servicegesellschaft mbH29,357$1.14M0.0%-1.8%0.101%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank 11,810$0.46M0.0%-3.3%0.040%Search for SEC Filing on Google Icon
1/27/2026Oak Harvest Investment Services13,485$0.53M0.0%-20.1%0.046%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.1,418$55K0.0%+26.5%0.005%Search for SEC Filing on Google Icon
1/26/2026CWM LLC2,302$90K0.0%+20.5%0.008%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC3,337$0.13M0.0%+139.7%0.011%Search for SEC Filing on Google Icon
1/23/2026Assetmark Inc.5,287$0.21M0.0%-7.3%0.018%Search for SEC Filing on Google Icon
1/21/2026Portside Wealth Group LLC5,942$0.23M0.0%N/A0.020%Search for SEC Filing on Google Icon
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Data available starting January 2016

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Castle Biosciences logo
Castle Biosciences, Inc., a molecular diagnostics company, provides testing solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus, uveal melanoma, and mental health conditions. It offers DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test to identify the risk of metastasis for patients diagnosed with invasive cutaneous melanoma; DecisionDx-SCC, a proprietary risk stratification GEP test for patients with cutaneous squamous cell carcinoma; MyPath Melanoma, a test used for patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a spatial omics test to predict future development of high-grade dysplasia and/or esophageal cancer in patients with non-dysplastic, indefinite dysplasia, or low-grade dysplasia Barrett's esophagus. In addition, the company provides DecisionDx-UM test, a proprietary risk stratification GEP test that predicts the risk of metastasis for patients with uveal melanoma; and IDgenetix, a pharmacogenomic test that helps guide drug treatment for major depressive disorder, schizophrenia, bipolar disorder, anxiety disorders, social phobia, obsessive-compulsive personality disorder, post-traumatic stress disorder, and attention deficit hyperactivity disorder. It offers its products to skin cancer, gastroenterology, and mental health markets. The company was incorporated in 2007 and is headquartered in Friendswood, Texas.
Read More on Castle Biosciences

Today's Range

Now: $25.14
Low: $25.08
High: $26.19

50 Day Range

MA: $32.34
Low: $25.00
High: $43.04

52 Week Range

Now: $25.14
Low: $14.59
High: $44.28

Volume

280,889 shs

Average Volume

408,876 shs

Market Capitalization

$747.35 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

1.09

Who are the company insiders with the largest holdings of Castle Biosciences?

Castle Biosciences' top insider shareholders include:
  1. Derek J Maetzold (Insider)
  2. Derek J Maetzold (Insider)
  3. Daniel Bradbury (Director)
  4. David S Kabakoff (Director)
  5. Joseph C Cook III (Director)
  6. Kristen M Oelschlager (COO)
  7. Tobin W Juvenal (Insider)
  8. Frank Stokes (CFO)
  9. Bernhard E Spiess (Insider)
  10. G Bradley Cole (Director)
Learn More about top insider investors at Castle Biosciences.

Who are the major institutional investors of Castle Biosciences?

Castle Biosciences' top institutional shareholders include:
  1. Vanguard Group Inc. — 7.54%
  2. RTW Investments LP — 7.25%
  3. Principal Financial Group Inc. — 6.19%
  4. Dimensional Fund Advisors LP — 3.92%
  5. Summit Partners Public Asset Management LLC — 3.63%
  6. State Street Corp — 2.52%
Learn More about top institutional investors of Castle Biosciences stock.

Which major investors are selling Castle Biosciences stock?

During the last quarter, CSTL stock was sold by these institutional investors:
  1. Braidwell LP
  2. Nuveen LLC
  3. Dimensional Fund Advisors LP
  4. Millennium Management LLC
  5. UBS Group AG
  6. Wasatch Advisors LP
  7. Trexquant Investment LP
  8. AIGH Capital Management LLC
During the previous year, company insiders that have sold Castle Biosciences company stock include:
  1. Derek J Maetzold (Insider)
  2. Derek J Maetzold (Insider)
  3. Daniel Bradbury (Director)
  4. David S Kabakoff (Director)
  5. Joseph C Cook III (Director)
Learn More investors selling Castle Biosciences stock.

Which major investors are buying Castle Biosciences stock?

During the last quarter, CSTL stock was purchased by institutional investors including:
  1. RTW Investments LP
  2. Summit Partners Public Asset Management LLC
  3. Eventide Asset Management LLC
  4. Wellington Management Group LLP
  5. Tudor Investment Corp ET AL
  6. Invesco Ltd.
  7. Informed Momentum Co LLC
  8. Bridgeway Capital Management LLC