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Castle Biosciences Inc (CSTL) Insider Trading

Total insider buys:
  • $6,094,007.00
Total insider sells:
  • $139,100,194.60
Most recent insider trade:
  • March 26, 2025
Most active insider trader:
  • Derek J Maetzold
Trader NameDateTitleAmountPriceTypeTotal Value
Oct. 19, 2021Insider2,500$67.27Sell$168,175.00
Oct. 6, 2021Insider2,500$63.74Sell$159,350.00
Oct. 4, 2021Insider2,500$60.85Sell$152,125.00
Oct. 4, 2021Director5,000$60.93Sell$304,650.00
Sept. 30, 2021Insider10,000$65.92Sell$659,200.00
Sept. 28, 2021Insider2,500$66.88Sell$167,200.00
Sept. 27, 2021COO10,000$71.02Sell$710,200.00
Sept. 21, 2021Director5,000$73.95Sell$369,750.00
Sept. 14, 2021Insider3,333$74.38Sell$247,908.54
Sept. 2, 2021Insider15,401$75.78Sell$1,167,087.78
Aug. 31, 2021Insider10,000$75.70Sell$757,000.00
Aug. 17, 2021Insider5,510$59.01Sell$325,145.10
Aug. 17, 2021Director644$60.02Sell$38,652.88
Aug. 3, 2021Insider4,020$70.35Sell$282,807.00
Aug. 3, 2021Director5,000$69.62Sell$348,100.00
July 26, 2021Director5,000$66.78Sell$333,900.00
July 21, 2021Insider10,000$68.06Sell$680,600.00
July 21, 2021Insider10,000$68.06Sell$680,600.00
July 19, 2021Insider10,000$64.62Sell$646,200.00
July 9, 2021Insider10,000$72.56Sell$725,600.00
July 8, 2021Director5,000$69.56Sell$347,800.00
July 7, 2021Insider10,000$70.04Sell$700,400.00
June 24, 2021Insider10,000$74.93Sell$749,300.00
June 22, 2021Insider10,000$74.56Sell$745,600.00
June 17, 2021Director30,000$75.07Sell$2,252,100.00
June 17, 2021Insider10,000$75.40Sell$754,000.00
June 16, 2021CFO2,127$73.07Sell$155,419.89
June 8, 2021Insider10,000$70.18Sell$701,800.00
May 27, 2021Insider4,034$58.73Sell$236,916.82
May 25, 2021Insider8,599$60.50Sell$520,239.50
May 20, 2021Insider1,300$60.47Sell$78,611.00
May 13, 2021Insider3,333$50.71Sell$169,016.43
April 28, 2021Insider14,374$68.48Sell$984,331.52
April 26, 2021Insider14,374$69.17Sell$994,249.58
April 22, 2021Director15,000$63.69Sell$955,350.00
April 13, 2021Insider14,374$67.94Sell$976,569.56
April 7, 2021Director15,000$72.81Sell$1,092,150.00
April 5, 2021Director70,000$72.20Sell$5,054,000.00
March 31, 2021Director30,000$67.76Sell$2,032,800.00
March 29, 2021Insider12,974$58.94Sell$764,687.56
March 26, 2021Insider13,275$60.45Sell$802,473.75
March 24, 2021Director7,500$63.09Sell$473,175.00
March 22, 2021Director10,000$67.12Sell$671,200.00
March 19, 2021Director10,000$66.17Sell$661,700.00
March 16, 2021Director120,000$63.74Sell$7,648,800.00
March 12, 2021Insider14,375$64.30Sell$924,312.50
March 10, 2021Insider14,375$65.08Sell$935,525.00
Feb. 23, 2021Director7,500$79.63Sell$597,225.00
Feb. 10, 2021Director15,000$95.35Sell$1,430,250.00
Feb. 9, 2021Insider28,750$95.21Sell$2,737,287.50
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  • Insiders are both buying and selling Castle Biosciences Inc stock.

  • The insider traders at Castle Biosciences Inc are: Derek J Maetzold, Daniel Bradbury, Joseph C Cook III, David S Kabakoff, Frank Stokes, Derek J. Maetzold, Sofinnova Healthquest Partners, Kristen M Oelschlager, Tobin W Juvenal, Bernhard E. Spiess, Ellen Goldberg, Mara G Aspinall, Mgc Venture Partners 2013 Gp,, Bonnie H Anderson, Tiffany Olson, and Bernhard E Spiess

  • The most active insider trader at Castle Biosciences Inc is Derek J Maetzold with 101 trades.

  • Derek J Maetzold has sold the most Castle Biosciences Inc stock with a total value of $36,289,454.13.

  • Mgc Venture Partners 2013 Gp, has bought the most Castle Biosciences Inc stock with a total value of $10,000,000.00.

  • The most recent insider trade for Castle Biosciences Inc was on March 26, 2025.

  • The single biggest insider buy for Castle Biosciences Inc was from Mgc Venture Partners 2013 Gp, with a total value of $5,000,000.00 on July 29, 2019.

  • The single biggest insider sell for Castle Biosciences Inc was from Sofinnova Healthquest Partners with a total value of $8,625,000.00 on May 12, 2020.