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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
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −15 $20.74 $311 4,773
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −15 $20.74 $311 4,770
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −15 $20.74 $311 4,770
2025-03-07 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −15 $20.74 $311 4,770
2025-03-04 Oelschlager Kristen M Chief Operating Officer Option exercise +13,811 167,604
2025-03-04 Oelschlager Kristen M Chief Operating Officer Shares withheld for taxes −3,640 $22.23 $81K 163,964
2025-03-04 Oelschlager Kristen M Chief Operating Officer Grant or award · Restricted Stock Units +47,838 47,838
2025-03-04 Oelschlager Kristen M Chief Operating Officer Option exercise · Restricted Stock Units −13,811 41,432
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Option exercise 10b5-1 +31,109 111,927
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Shares withheld for taxes 10b5-1 −7,576 $22.23 $168K 104,351
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,247 $20.86 $26K 103,104
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −2,022 $20.86 $42K 69,059
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −1,739 $20.86 $36K 58,834
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −172 $20.86 $4K 4,938
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −169 $20.86 $4K 4,935
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −169 $20.86 $4K 4,935
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Sale 10b5-1 −169 $20.86 $4K 4,935
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Grant or award · Restricted Stock Units 10b5-1 +111,948 111,948
2025-03-04 MAETZOLD DEREK J Pres. & Chief Exec. Officer Option exercise · Restricted Stock Units 10b5-1 −31,109 93,328
2025-03-04 Juvenal Tobin W Chief Commercial Officer Option exercise +13,811 83,754

Page 24 of 45 · 897 trades