Maetzold Derek J

Castle Biosciences, Inc. - Common stock · Pres. & Chief Exec. Officer

Maetzold Derek J is listed in public filings as director, officer: Pres. & Chief Exec. Officer. This Maetzold Derek J insider trading page organizes Form 4 disclosures, reported purchases and sales, transaction dates, share amounts, related issuers, and historical insider activity so readers can review the person's public trading record in one place. Companies and tickers connected to this insider trading profile include Castle Biosciences, Inc. - Common stock (CSTL). Investors use Maetzold Derek J's insider trading disclosures to study buying and selling patterns, position changes, company-specific activity, and the source evidence behind each reported transaction.

Latest Actions

Company	Holding Value	Last Transaction	Amount	Transaction Price	Current Price
Castle Biosciences, Inc. - Common stockCSTL	$39k1.9k shares	SellMay 21, 2026	$4.3K212 shares	$20.20	--
Castle Biosciences, Inc. - Common stockCSTL	$488204 shares	Grant / ExerciseMay 21, 2026	$1.0K420 shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$904k44.8k shares	SellMay 21, 2026	$20.9K1k shares	$20.20	--
Castle Biosciences, Inc. - Common stockCSTL	$769k38.1k shares	SellMay 21, 2026	$17.8K880 shares	$20.20	--
Castle Biosciences, Inc. - Common stockCSTL	$434k21.5k shares	SellMay 21, 2026	$8.5K420 shares	$20.20	--

Insider Trades History

Company	Holding Value	Last Transaction	Amount	Transaction Price	Current Price
Castle Biosciences, Inc. - Common stockCSTL	$430k21.5k shares	SellMay 20, 2026	$2.6K130 shares	$20.00	--
Castle Biosciences, Inc. - Common stockCSTL	$43k2.2k shares	SellMay 20, 2026	$1.3K66 shares	$20.00	--
Castle Biosciences, Inc. - Common stockCSTL	$1.5k624 shares	Grant / ExerciseMay 20, 2026	$311130 shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$916k45.8k shares	SellMay 20, 2026	$6.4K322 shares	$20.00	--
Castle Biosciences, Inc. - Common stockCSTL	$779k38.9k shares	SellMay 20, 2026	$5.5K273 shares	$20.00	--
Castle Biosciences, Inc. - Common stockCSTL	$1.0M46.1k shares	SellMay 7, 2026	$4.5K198 shares	$22.59	--
Castle Biosciences, Inc. - Common stockCSTL	$886k39.2k shares	SellMay 7, 2026	$3.8K168 shares	$22.59	--
Castle Biosciences, Inc. - Common stockCSTL	$50k2.2k shares	SellMay 7, 2026	$92641 shares	$22.59	--
Castle Biosciences, Inc. - Common stockCSTL	$494k22.4k shares	SellMay 7, 2026	$117.2K5.3k shares	$22.08	--
Castle Biosciences, Inc. - Common stockCSTL	$1.0M46.3k shares	SellMay 7, 2026	$25.6K1.2k shares	$22.08	--
Castle Biosciences, Inc. - Common stockCSTL	$870k39.4k shares	SellMay 7, 2026	$21.7K985 shares	$22.08	--
Castle Biosciences, Inc. - Common stockCSTL	$485k21.5k shares	SellMay 7, 2026	$20.5K906 shares	$22.59	--
Castle Biosciences, Inc. - Common stockCSTL	$1.8k754 shares	Grant / ExerciseMay 7, 2026	$14.9K6.2k shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$50k2.3k shares	SellMay 7, 2026	$5.2K237 shares	$22.08	--
Castle Biosciences, Inc. - Common stockCSTL	$17k7k shares	Grant / ExerciseApr 21, 2026	$1.3K550 shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$1.2M47.5k shares	SellApr 21, 2026	$34.1K1.4k shares	$25.10	--
Castle Biosciences, Inc. - Common stockCSTL	$1.0M40.4k shares	SellApr 21, 2026	$28.9K1.2k shares	$25.10	--
Castle Biosciences, Inc. - Common stockCSTL	$539k21.5k shares	SellApr 21, 2026	$13.8K550 shares	$25.10	--
Castle Biosciences, Inc. - Common stockCSTL	$63k2.5k shares	SellApr 21, 2026	$7.0K278 shares	$25.10	--
Castle Biosciences, Inc. - Common stockCSTL	$538k21.5k shares	SellApr 6, 2026	$155.5K6.2k shares	$25.03	--
Castle Biosciences, Inc. - Common stockCSTL	$1.2M48.9k shares	SellApr 6, 2026	$34.0K1.4k shares	$25.03	--
Castle Biosciences, Inc. - Common stockCSTL	$1.0M41.5k shares	SellApr 6, 2026	$28.9K1.2k shares	$25.03	--
Castle Biosciences, Inc. - Common stockCSTL	$18k7.5k shares	Grant / ExerciseApr 6, 2026	$14.9K6.2k shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$70k2.8k shares	SellApr 6, 2026	$7.0K278 shares	$25.03	--
Castle Biosciences, Inc. - Common stockCSTL	$33k13.7k shares	Grant / ExerciseMar 26, 2026	$1.3K550 shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$1.3M50.2k shares	SellMar 26, 2026	$34.7K1.4k shares	$25.55	--
Castle Biosciences, Inc. - Common stockCSTL	$1.1M42.7k shares	SellMar 26, 2026	$29.5K1.2k shares	$25.55	--
Castle Biosciences, Inc. - Common stockCSTL	$549k21.5k shares	SellMar 26, 2026	$14.1K550 shares	$25.55	--
Castle Biosciences, Inc. - Common stockCSTL	$78k3.1k shares	SellMar 26, 2026	$7.1K278 shares	$25.55	--
Castle Biosciences, Inc. - Common stockCSTL	$545k21.5k shares	SellMar 18, 2026	$16.5K650 shares	$25.39	--
Castle Biosciences, Inc. - Common stockCSTL	$574k22.1k shares	SellMar 17, 2026	$483.6K18.7k shares	$25.93	--
Castle Biosciences, Inc. - Common stockCSTL	$1.1M40.9k shares	SellMar 16, 2026	$453.0K17.4k shares	$25.96	--
Castle Biosciences, Inc. - Common stockCSTL	$1.1M40.8k shares	SellMar 16, 2026	$3.4K126 shares	$26.68	--
Castle Biosciences, Inc. - Common stockCSTL	$1.5M58.4k shares	SellMar 13, 2026	$336.0K13.2k shares	$25.45	--
Castle Biosciences, Inc. - Common stockCSTL	$1.8M71.6k shares	SellMar 12, 2026	$585.9K23.2k shares	$25.28	--
Castle Biosciences, Inc. - Common stockCSTL	$2.5M94.7k shares	SellMar 11, 2026	$451.9K17.3k shares	$26.11	--
Castle Biosciences, Inc. - Common stockCSTL	$1.3M51.6k shares	SellMar 11, 2026	$35.4K1.4k shares	$26.11	--
Castle Biosciences, Inc. - Common stockCSTL	$1.1M43.8k shares	SellMar 11, 2026	$30.3K1.2k shares	$26.11	--
Castle Biosciences, Inc. - Common stockCSTL	$34k14.3k shares	Grant / ExerciseMar 11, 2026	$14.9K6.2k shares	$2.39	--
Castle Biosciences, Inc. - Common stockCSTL	$87k3.3k shares	SellMar 11, 2026	$7.3K279 shares	$26.11	--
Castle Biosciences, Inc. - Common stockCSTL	$3.0M105.8k shares	Grant / ExerciseMar 4, 2026	$505.1K17.9k shares	$28.17	--
Castle Biosciences, Inc. - Common stockCSTL	--62.2k shares	Grant / ExerciseMar 4, 2026	Disclosure amount unavailable31.1k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	--84k shares	Grant / ExerciseMar 4, 2026	Disclosure amount unavailable28k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	--123.8k shares	Grant / ExerciseMar 4, 2026	Disclosure amount unavailable59.1k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	$1.8M64.7k shares	Grant / ExerciseMar 3, 2026	$525.0K19k shares	$27.57	--
Castle Biosciences, Inc. - Common stockCSTL	--102.6k shares	Grant / ExerciseMar 3, 2026	Disclosure amount unavailable102.6k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	$3.2M83.9k shares	SellFeb 4, 2026	$24.4K646 shares	$37.82	--
Castle Biosciences, Inc. - Common stockCSTL	$3.2M83.7k shares	SellFeb 4, 2026	$6.6K171 shares	$38.61	--
Castle Biosciences, Inc. - Common stockCSTL	$3.4M84.5k shares	SellFeb 3, 2026	$127.7K3.2k shares	$39.91	--
Castle Biosciences, Inc. - Common stockCSTL	$3.5M87.7k shares	SellJan 20, 2026	$160.7K4k shares	$40.01	--
Castle Biosciences, Inc. - Common stockCSTL	--62.2k shares	Grant / ExerciseJan 12, 2026	Disclosure amount unavailable62.2k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	$1.2M29.5k shares	SellJan 6, 2026	$53.7K1.3k shares	$40.10	--
Castle Biosciences, Inc. - Common stockCSTL	$1.2M30.9k shares	SellJan 5, 2026	$102.0K2.7k shares	$38.09	--
Castle Biosciences, Inc. - Common stockCSTL	$1.4M33.5k shares	SellDec 22, 2025	$33.5K830 shares	$40.35	--
Castle Biosciences, Inc. - Common stockCSTL	$1.4M34.4k shares	SellDec 17, 2025	$20.4K509 shares	$40.04	--
Castle Biosciences, Inc. - Common stockCSTL	$1.3M34.9k shares	SellDec 16, 2025	$494.3K12.8k shares	$38.55	--
Castle Biosciences, Inc. - Common stockCSTL	$1.9M48.7k shares	SellDec 15, 2025	$717.3K18.5k shares	$38.75	--
Castle Biosciences, Inc. - Common stockCSTL	$1.9M47.7k shares	SellDec 15, 2025	$39.8K1k shares	$39.30	--
Castle Biosciences, Inc. - Common stockCSTL	$2.6M67.2k shares	Grant / ExerciseDec 10, 2025	$230.8K6.1k shares	$38.02	--
Castle Biosciences, Inc. - Common stockCSTL	--15.4k shares	Grant / ExerciseDec 10, 2025	Disclosure amount unavailable15.4k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	$2.2M57.9k shares	Grant / ExerciseDec 9, 2025	$504.2K13.2k shares	$38.25	--
Castle Biosciences, Inc. - Common stockCSTL	--33.5k shares	Grant / ExerciseDec 9, 2025	Disclosure amount unavailable33.5k shares	--	--
Castle Biosciences, Inc. - Common stockCSTL	$1.5M37.5k shares	SellDec 4, 2025	$53.6K1.3k shares	$40.03	--
Castle Biosciences, Inc. - Common stockCSTL	$1.5M38.9k shares	SellDec 2, 2025	$105.1K2.7k shares	$39.23	--
Castle Biosciences, Inc. - Common stockCSTL	$1.7M41.6k shares	SellNov 26, 2025	$170.7K4.3k shares	$40.09	--
Castle Biosciences, Inc. - Common stockCSTL	$1.8M45.8k shares	SellNov 25, 2025	$204.9K5.1k shares	$40.05	--
Castle Biosciences, Inc. - Common stockCSTL	$1.7M50.9k shares	SellNov 18, 2025	$91.1K2.7k shares	$34.02	--
Castle Biosciences, Inc. - Common stockCSTL	$1.7M53.6k shares	SellNov 5, 2025	$85.3K2.7k shares	$31.85	--
Castle Biosciences, Inc. - Common stockCSTL	$1.7M56.5k shares	SellNov 4, 2025	$196.4K6.5k shares	$30.41	--
Castle Biosciences, Inc. - Common stockCSTL	$1.8M56.3k shares	SellNov 4, 2025	$7.4K237 shares	$31.12	--
Castle Biosciences, Inc. - Common stockCSTL	$1.4M63k shares	SellOct 20, 2025	$30.0K1.3k shares	$22.44	--
Castle Biosciences, Inc. - Common stockCSTL	$1.5M64.3k shares	SellOct 2, 2025	$30.2K1.3k shares	$22.58	--
Castle Biosciences, Inc. - Common stockCSTL	$1.4M65.7k shares	SellSep 17, 2025	$29.4K1.3k shares	$21.97	--
Castle Biosciences, Inc. - Common stockCSTL	$1.6M67k shares	SellSep 2, 2025	$32.0K1.3k shares	$23.93	--
Castle Biosciences, Inc. - Common stockCSTL	$1.4M68.3k shares	SellAug 15, 2025	$26.8K1.3k shares	$20.04	--