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CIK 0001447362 · Accelerated filer

CASTLE BIOSCIENCES INC

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Ticker
CSTL
Exchange
Nasdaq
Industry
Services-Medical Laboratories
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
770701774
Phone
866-788-9007
Business address
1500 W. PARKWOOD AVE., SUITE 400, FRIENDSWOOD, TX, 77546
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$5,765,795
in 18 filings, $4.9M under 10b5-1 plans

Net −$5,765,795. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. MAETZOLD DEREK J −$3.1M Pres. & Chief Exec. Officer sold 98% of stake
  2. Juvenal Tobin W −$1.5M Chief Commercial Officer sold 58% of stake
  3. Oelschlager Kristen M −$1.1M Chief Operating Officer sold 71% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,236 $20.30 $25K 77,099
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −2,017 $20.30 $41K 65,025
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,731 $20.30 $35K 55,372
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −165 $20.30 $3K 4,608
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −165 $20.30 $3K 4,605
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −165 $20.30 $3K 4,605
2025-03-26 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −165 $20.30 $3K 4,605
2025-03-26 Cotton Rodney Director Option exercise +5,329 5,329
2025-03-26 Cotton Rodney Director Option exercise · Restricted Stock Units −5,329 10,659
2025-03-10 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −2,130 $19.52 $42K 78,335
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −20,516 $20.05 $411K 82,588
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,828 $20.05 $37K 67,231
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,569 $20.05 $31K 57,265
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −150 $20.05 $3K 4,788
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −150 $20.05 $3K 4,785
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −150 $20.05 $3K 4,785
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −150 $20.05 $3K 4,785
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −2,123 $20.74 $44K 80,465
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −189 $20.74 $4K 67,042
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −162 $20.74 $3K 57,103

Page 23 of 45 · 897 trades