MAETZOLD DEREK J

CSTL

MAETZOLD DEREK J serves as director, officer: Pres. & Chief Exec. Officer at Castle Biosciences, Inc. (CSTL). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

148 trades

$59.16M

Net Position

Net Seller

$59.16M

Companies Traded

CSTL

Active Period

Feb 2021 – Apr 2026

148 total trades

Most Recent

Sell CSTL

Apr 23, 2026 · $83.8K

MAETZOLD DEREK J's Insider Trading at Castle Biosciences, Inc. (CSTL)

Buys

0 · $0.00

Sells

50 · $12.59M

Total Shares Bought

Total Shares Sold

458,262

CSTL Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Apr 23, 2026	Sell	3,338	$25.10	$83.8K	47,495
Apr 8, 2026	Sell	9,002	$25.03	$225.3K	48,852
Mar 30, 2026	Sell	3,338	$25.55	$85.3K	50,209
Mar 19, 2026	Sell	19,300	$25.91	$500.1K	22,129
Mar 17, 2026	Sell	30,779	$25.75	$792.4K	58,354
Mar 13, 2026	Sell	43,285	$25.66	$1.11M	94,737
Feb 5, 2026	Sell	3,846	$39.56	$152.2K	84,515
Feb 3, 2026	Sell	4,017	$39.52	$158.8K	0
Jan 22, 2026	Sell	4,017	$40.01	$160.7K	87,715
Jan 20, 2026	Sell	4,017	$40.01	$160.7K	0
Jan 7, 2026	Sell	1,339	$40.10	$53.7K	29,513
Jan 5, 2026	Sell	4,017	$38.76	$155.7K	0
Dec 22, 2025	Sell	830	$40.35	$33.5K	0
Dec 17, 2025	Sell	509	$40.04	$20.4K	0
Dec 15, 2025	Sell	32,346	$38.69	$1.25M	0
Dec 9, 2025	Sell	19,251	$38.18	$735.0K	0
Dec 4, 2025	Sell	1,339	$40.03	$53.6K	0
Dec 2, 2025	Sell	2,678	$39.23	$105.1K	0
Nov 26, 2025	Sell	4,258	$40.09	$170.7K	0
Nov 25, 2025	Sell	5,115	$40.05	$204.9K	0
Nov 18, 2025	Sell	2,678	$34.02	$91.1K	0
Nov 4, 2025	Sell	9,373	$30.84	$289.1K	0
Oct 20, 2025	Sell	1,339	$22.44	$30.0K	0
Oct 2, 2025	Sell	1,339	$22.58	$30.2K	0
Sep 17, 2025	Sell	1,339	$21.97	$29.4K	0
Sep 2, 2025	Sell	1,339	$23.93	$32.0K	0
Aug 15, 2025	Sell	1,339	$20.04	$26.8K	0
Aug 13, 2025	Sell	43,019	$19.50	$839.0K	0
Aug 8, 2025	Sell	23,972	$19.36	$464.1K	0
Jun 27, 2025	Sell	20,596	$20.30	$418.1K	0
Apr 21, 2025	Sell	5,149	$21.52	$110.8K	0
Apr 8, 2025	Sell	5,314	$20.19	$107.3K	0
Mar 26, 2025	Sell	5,149	$20.30	$104.5K	0
Mar 7, 2025	Sell	28,682	$20.07	$575.7K	0
Mar 4, 2025	Sell	12,925	$21.66	$280.0K	0
Jan 13, 2025	Sell	2,180	$28.05	$61.2K	0
Jan 6, 2025	Sell	6,746	$29.66	$200.1K	0
Dec 17, 2024	Sell	9,364	$28.34	$265.4K	0
Dec 13, 2024	Sell	25,673	$28.72	$737.4K	0
Dec 9, 2024	Sell	21,361	$30.42	$649.8K	0
Dec 5, 2024	Sell	4,529	$31.35	$142.0K	0
Nov 12, 2024	Sell	4,529	$34.15	$154.7K	0
Nov 4, 2024	Sell	4,524	$32.54	$147.2K	0
Oct 14, 2024	Sell	4,529	$32.27	$146.2K	0
Oct 8, 2024	Sell	2,264	$30.27	$68.5K	0
Oct 4, 2024	Sell	2,115	$28.73	$60.8K	0
Sep 16, 2024	Sell	4,529	$30.97	$140.3K	0
Sep 11, 2024	Sell	2,296	$30.32	$69.6K	0
Sep 9, 2024	Sell	2,136	$29.46	$62.9K	0
Sep 3, 2024	Sell	1,314	$30.04	$39.5K	0