NASDAQ:CSTL Castle Biosciences - CSTL Insider Trading & Ownership Adding Choose a watchlist: Watchlist Adding You have already added five stocks to your watchlist. Upgrade to MarketBeat Daily Premium to add more stocks to your watchlist. Adding Castle Biosciences, Inc. Please log in to your account or sign up in order to add this asset to your watchlist. $26.00 +0.35 (+1.36%) (As of 01/27/2023 12:00 AM ET) Add Compare Share Share Today's Range$25.38▼$26.3550-Day Range$20.61▼$27.2152-Week Range$15.58▼$48.40Volume89,818 shsAverage Volume118,418 shsMarket Capitalization$685.10 millionP/E RatioN/ADividend YieldN/APrice Target$57.14 ProfileAnalyst RatingsChartCompetitorsEarningsFinancialsInsider TradesInstitutional OwnershipHeadlinesSEC FilingsShort InterestSocial Media Castle Biosciences (NASDAQ:CSTL) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage7.30%Number OfInsiders Buying(Last 12 Months)1Amount OfInsider Buying(Last 12 Months)$49,746.20Number OfInsiders Selling(Last 12 Months)2Amount OfInsider Selling(Last 12 Months)$2.89 M CSTL Insider Buying and Selling by Quarter Get CSTL Insider Trade Alerts Want to know when executives and insiders are buying or selling Castle Biosciences stock? 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Email Address Castle Biosciences Insider Trading History Export to ExcelTransaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails1/3/2023Daniel BradburyDirectorSell7,704$22.89$176,344.56199,539 1/3/2023Derek J MaetzoldInsiderSell3,833$22.90$87,775.70301,529 12/19/2022Derek J MaetzoldInsiderSell3,833$23.07$88,427.31305,362 12/5/2022Derek J MaetzoldInsiderSell3,833$24.79$95,020.07294,723 11/29/2022Tiffany OlsonDirectorBuy1,162$21.50$24,983.002,968 11/21/2022Derek J MaetzoldInsiderSell2,869$20.84$59,789.96289,520 10/24/2022Derek J MaetzoldInsiderSell3,483$20.41$71,088.03296,572 10/11/2022Derek J MaetzoldInsiderSell560$24.05$13,468.0027,342 10/4/2022Derek J MaetzoldInsiderSell541$30.03$16,246.23303,889 10/3/2022Daniel BradburyDirectorSell7,704$27.17$209,317.68222,651 9/26/2022Derek J MaetzoldInsiderSell2,188$23.93$52,358.84306,075 9/12/2022Derek J MaetzoldInsiderSell2,994$29.56$88,502.64309,120 8/29/2022Derek J MaetzoldInsiderSell4,118$29.56$121,728.08312,414 8/16/2022Derek J MaetzoldInsiderSell36$32.83$1,181.8828,958 8/3/2022Derek J MaetzoldInsiderSell42$30.03$1,261.26328,661 8/1/2022Daniel BradburyDirectorSell7,704$27.47$211,628.88238,059 8/1/2022Derek J MaetzoldInsiderSell3,723$27.44$102,159.12328,814 5/12/2022Tiffany OlsonDirectorBuy1,320$18.76$24,763.201,806 3/29/2022Daniel BradburyDirectorSell8,852$45.32$401,172.64 3/14/2022Daniel BradburyDirectorSell8,852$38.21$338,234.92 2/22/2022Daniel BradburyDirectorSell8,852$39.02$345,405.04 2/9/2022Daniel BradburyDirectorSell8,852$46.53$411,883.56 1/24/2022Daniel BradburyDirectorSell14,631$35.42$518,230.02 1/20/2022Daniel BradburyDirectorSell15,604$35.26$550,197.04 1/18/2022Daniel BradburyDirectorSell2,470$35.30$87,191.00 1/4/2022Daniel BradburyDirectorSell16,353$43.58$712,663.74 11/9/2021Derek J MaetzoldInsiderSell2,500$56.66$141,650.00 11/8/2021Daniel BradburyDirectorSell5,554$61.21$339,960.34 11/4/2021Daniel BradburyDirectorSell4,446$61.05$271,428.30 10/21/2021Daniel BradburyDirectorSell5,000$62.94$314,700.00 10/21/2021Derek J MaetzoldInsiderSell2,500$62.95$157,375.00 10/19/2021Derek J MaetzoldInsiderSell2,500$67.27$168,175.00 10/6/2021Derek J MaetzoldInsiderSell2,500$63.74$159,350.00 10/4/2021Daniel BradburyDirectorSell5,000$60.93$304,650.00 10/4/2021Derek J MaetzoldInsiderSell2,500$60.85$152,125.00 9/30/2021Derek J MaetzoldInsiderSell10,000$65.92$659,200.00 9/28/2021Derek J MaetzoldInsiderSell2,500$66.88$167,200.00 9/27/2021Kristen M OelschlagerCOOSell10,000$71.02$710,200.00 9/21/2021Daniel BradburyDirectorSell5,000$73.95$369,750.00 9/14/2021Derek J. MaetzoldInsiderSell3,333$74.38$247,908.54345,018 9/2/2021Bernhard E SpiessInsiderSell15,401$75.78$1,167,087.78 8/31/2021Derek J. MaetzoldInsiderSell10,000$75.70$757,000.00355,124 8/17/2021Daniel BradburyDirectorSell644$60.02$38,652.88 8/17/2021Derek J MaetzoldInsiderSell5,510$59.01$325,145.10 8/3/2021Daniel BradburyDirectorSell5,000$69.62$348,100.00 8/3/2021Derek J MaetzoldInsiderSell4,020$70.35$282,807.00 7/26/2021Daniel BradburyDirectorSell5,000$66.78$333,900.00 7/21/2021Derek J MaetzoldInsiderSell10,000$68.06$680,600.00413,893 7/21/2021Derek J MaetzoldInsiderSell10,000$68.06$680,600.00 7/19/2021Derek J MaetzoldInsiderSell10,000$64.62$646,200.00 7/9/2021Derek J MaetzoldInsiderSell10,000$72.56$725,600.00 7/8/2021Daniel BradburyDirectorSell5,000$69.56$347,800.00 7/7/2021Derek J MaetzoldInsiderSell10,000$70.04$700,400.00 6/24/2021Derek J MaetzoldInsiderSell10,000$74.93$749,300.00468,118 6/22/2021Derek J. MaetzoldInsiderSell10,000$74.56$745,600.00491,005 6/17/2021David S KabakoffDirectorSell30,000$75.07$2,252,100.00 6/17/2021Tobin W JuvenalInsiderSell10,000$75.40$754,000.008,090 6/16/2021Frank StokesCFOSell2,127$73.07$155,419.89 6/8/2021Derek J MaetzoldInsiderSell10,000$70.18$701,800.00523,904 5/27/2021Derek J MaetzoldInsiderSell4,034$58.73$236,916.82540,489 5/25/2021Derek J MaetzoldInsiderSell8,599$60.50$520,239.50546,020 5/20/2021Derek J MaetzoldInsiderSell1,300$60.47$78,611.00554,619 5/13/2021Derek J MaetzoldInsiderSell3,333$50.71$169,016.43558,466 4/28/2021Derek J MaetzoldInsiderSell14,374$68.48$984,331.52576,626 4/26/2021Derek J. MaetzoldInsiderSell14,374$69.17$994,249.58602,541 4/22/2021Daniel BradburyDirectorSell15,000$63.69$955,350.004/13/2021Derek J MaetzoldInsiderSell14,374$67.94$976,569.56649,001 4/7/2021Daniel BradburyDirectorSell15,000$72.81$1,092,150.00 4/5/2021David S KabakoffDirectorSell70,000$72.20$5,054,000.00 3/31/2021David S KabakoffDirectorSell30,000$67.76$2,032,800.00 3/29/2021Derek J MaetzoldInsiderSell12,974$58.94$764,687.56690,410 3/26/2021Derek J MaetzoldInsiderSell13,275$60.45$802,473.75690,410 3/24/2021Daniel BradburyDirectorSell7,500$63.09$473,175.00 3/22/2021David S KabakoffDirectorSell10,000$67.12$671,200.00 3/19/2021David S KabakoffDirectorSell10,000$66.17$661,700.00 3/16/2021David S KabakoffDirectorSell120,000$63.74$7,648,800.00 3/12/2021Derek J MaetzoldInsiderSell14,375$64.30$924,312.50705,397 3/10/2021Derek J MaetzoldInsiderSell14,375$65.08$935,525.00735,325 2/23/2021Daniel BradburyDirectorSell7,500$79.63$597,225.00 2/10/2021Daniel BradburyDirectorSell15,000$95.35$1,430,250.002/9/2021Derek J MaetzoldInsiderSell28,750$95.21$2,737,287.501/27/2021Derek J MaetzoldInsiderSell14,377$66.08$950,032.16862,513 1/25/2021Daniel BradburyDirectorSell7,500$76.94$577,050.00 1/14/2021Derek J MaetzoldInsiderSell28,754$74.83$2,151,661.82910,618 1/12/2021Daniel BradburyDirectorSell12,113$78.29$948,326.77 1/12/2021Frank StokesCFOSell7,500$78.14$586,050.0011,386 12/29/2020Daniel BradburyDirectorSell30,000$69.69$2,090,700.00 12/29/2020Derek J MaetzoldInsiderSell15,000$66.45$996,750.001,282,631 12/16/2020Derek J MaetzoldInsiderSell6,250$66.22$413,875.001,305,702 12/10/2020Derek J MaetzoldInsiderSell15,000$58.93$883,950.001,335,302 12/10/2020Joseph C Cook IIIDirectorSell78,265$58.35$4,566,762.75142,178 12/8/2020Joseph C Cook IIIDirectorSell47,176$56.20$2,651,291.20142,178 12/4/2020Derek J MaetzoldInsiderSell18,750$51.05$957,187.501,353,452 12/2/2020Derek J MaetzoldInsiderSell6,250$50.08$313,000.001,353,452 11/18/2020Derek J MaetzoldInsiderSell18,750$48.82$915,375.0011/13/2020Frank StokesCFOSell26,000$50.87$1,322,620.0011/5/2020Derek J MaetzoldInsiderSell18,750$49.63$930,562.501,408,748 11/3/2020Derek J MaetzoldInsiderSell6,250$47.52$297,000.001,408,748 10/28/2020Derek J MaetzoldInsiderSell1,200$49.54$59,448.001,412,248 10/20/2020Daniel BradburyDirectorSell11,750$49.70$583,975.00 10/20/2020Derek J MaetzoldInsiderSell1,000$49.65$49,650.001,414,448 10/14/2020Joseph C Cook IIIDirectorSell6,475$54.58$353,405.50192,502 10/13/2020Frank StokesCFOSell13,000$54.79$712,270.0014,886 10/12/2020Joseph C Cook IIIDirectorSell19,676$54.84$1,079,031.84192,502 10/9/2020David S KabakoffDirectorSell50,000$54.20$2,710,000.00 10/5/2020David S KabakoffDirectorSell25,000$52.09$1,302,250.00 10/2/2020Derek J MaetzoldInsiderSell18,640$51.64$962,569.6010/2/2020Mara G AspinallDirectorSell2,500$52.48$131,200.00 9/22/2020Derek J MaetzoldInsiderSell36,160$51.46$1,860,793.601,461,611 9/16/2020Daniel BradburyDirectorSell3,750$48.38$181,425.00 9/15/2020Frank StokesCFOSell26,000$49.52$1,287,520.009/10/2020Derek J MaetzoldInsiderSell41,924$49.49$2,074,818.761,516,833 9/8/2020Bernhard E. SpiessInsiderSell14,888$49.00$729,512.0051,747 9/8/2020Joseph C Cook IIIDirectorSell69,265$48.30$3,345,499.50212,178 9/4/2020Bernhard E. SpiessInsiderSell25,112$47.41$1,190,559.92 9/4/2020Joseph C Cook IIIDirectorSell61,838$46.93$2,902,057.34212,178 9/2/2020Daniel BradburyDirectorSell7,500$45.66$342,450.00 8/31/2020Joseph C Cook IIIDirectorSell8,228$45.84$377,171.52212,178 8/28/2020Joseph C Cook IIIDirectorSell71,940$46.03$3,311,398.208/26/2020Joseph C Cook IIIDirectorSell5,049$45.85$231,496.65212,178 8/24/2020Joseph C Cook IIIDirectorSell8,877$45.90$407,454.30212,178 8/20/2020Joseph C Cook IIIDirectorSell17,369$45.84$796,194.96212,178 8/18/2020Daniel BradburyDirectorSell3,750$43.18$161,925.00 8/13/2020Derek J MaetzoldInsiderSell13,500$41.23$556,605.008/6/2020Daniel BradburyDirectorSell3,750$41.34$155,025.00 8/5/2020Derek J MaetzoldInsiderSell5,000$41.67$208,350.001,572,348 7/21/2020Daniel BradburyDirectorSell3,750$41.81$156,787.50 7/21/2020Derek J MaetzoldInsiderSell7,000$41.97$293,790.001,587,718 7/17/2020David S KabakoffDirectorSell25,000$43.04$1,076,000.00 7/15/2020Derek J MaetzoldInsiderSell28,000$41.96$1,174,880.001,604,223 7/8/2020Daniel BradburyDirectorSell7,500$41.08$308,100.00 6/24/2020Joseph C Cook IIIDirectorSell100$43.11$4,311.00212,178 6/22/2020David S KabakoffDirectorSell175,000$40.50$7,087,500.00212,178 6/18/2020Joseph C Cook IIIDirectorSell73,944$41.71$3,084,204.24212,178 6/15/2020Joseph C Cook IIIDirectorSell22,195$39.67$880,475.65212,178 6/10/2020Joseph C Cook IIIDirectorSell2,108$39.00$82,212.00212,178 6/3/2020Daniel BradburyDirectorSell3,750$37.01$138,787.50 5/28/2020Joseph C Cook IIIDirectorSell15,520$38.66$600,003.20208,053 5/27/2020Derek J MaetzoldInsiderSell5,000$36.75$183,750.001,625,348 5/26/2020Joseph C Cook IIIDirectorSell23,820$38.69$921,595.80208,053 5/22/2020Derek J MaetzoldInsiderSell5,000$36.97$184,850.001,628,359 5/21/2020Daniel BradburyDirectorSell3,750$37.21$139,537.50208,053 5/19/2020Joseph C Cook IIIDirectorSell900$37.03$33,327.00208,053 5/12/2020Sofinnova Healthquest PartnersMajor ShareholderSell250,000$34.50$8,625,000.00 4/30/2020Bonnie H AndersonDirectorSell3,000$30.25$90,750.00 2/19/2020David S KabakoffDirectorSell25,000$32.03$800,750.00 2/13/2020David S KabakoffDirectorSell25,000$32.01$800,250.00 2/6/2020Sofinnova Healthquest PartnersMajor ShareholderSell25,000$31.03$775,750.00 1/28/2020Sofinnova Healthquest PartnersMajor ShareholderSell25,000$30.02$750,500.00 7/29/2019David S KabakoffDirectorBuy62,500$16.00$1,000,000.00 7/29/2019Mgc Venture Partners 2013 Gp,Major ShareholderBuy312,500$16.00$5,000,000.00 (Data available from 1/1/2013 forward) CSTL Insider Trading Activity - Frequently Asked Questions Who is on Castle Biosciences's Insider Roster? The list of insiders at Castle Biosciences includes Bernhard E Spiess, Bonnie H Anderson, Daniel Bradbury, David S Kabakoff, Derek J Maetzold, Frank Stokes, Joseph C Cook III, Kristen M Oelschlager, Mara G Aspinall, Sofinnova Healthquest Partners, Tiffany Olson, and Tobin W Juvenal. Learn more on insiders at CSTL. What percentage of Castle Biosciences stock is owned by insiders? 7.30% of Castle Biosciences stock is owned by insiders. Learn more on CSTL's insider holdings. Which Castle Biosciences insiders have been buying company stock? The following insider purchased CSTL shares in the last 24 months: Tiffany Olson ($49,746.20). How much insider buying is happening at Castle Biosciences? Insiders have purchased a total of 2,482 CSTL shares in the last 24 months for a total of $49,746.20 bought. Which Castle Biosciences insiders have been selling company stock? The following insiders have sold CSTL shares in the last 24 months: Bernhard E Spiess ($1,167,087.78), Daniel Bradbury ($11,179,360.60), David S Kabakoff ($18,320,600.00), Derek J Maetzold ($17,026,505.36), Frank Stokes ($155,419.89), Kristen M Oelschlager ($710,200.00), and Tobin W Juvenal ($754,000.00). How much insider selling is happening at Castle Biosciences? Insiders have sold a total of 819,803 Castle Biosciences shares in the last 24 months for a total of $52,057,931.75 sold. This page (NASDAQ:CSTL) was last updated on 1/29/2023 by MarketBeat.com Staff Get 30 Days of MarketBeat All Access Free Sign up for MarketBeat All Access to gain access to MarketBeat's full suite of research tools: Best-in-Class Portfolio Monitoring View the latest news, buy/sell ratings, SEC filings and insider transactions for your stocks. Compare your portfolio performance to leading indices and get personalized stock ideas based on your portfolio. 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