Sign in

CIK 0001447362 · Accelerated filer

CASTLE BIOSCIENCES INC

Sign in to watch
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
$5,877,844
in 19 filings, $4.9M under 10b5-1 plans

Net −$5,877,844. 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 −$1.7M Chief Commercial Officer sold 60% 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
2026-08-14 Stokes Frank Chief Financial Officer Sale −24,908 $29.77 $742K 35,177
2026-03-05 Stokes Frank Chief Financial Officer Sale 10b5-1 −6,001 $27.98 $168K 60,085
2026-03-04 Stokes Frank Chief Financial Officer Option exercise 10b5-1 +24,146 73,018
2026-03-04 Stokes Frank Chief Financial Officer Shares withheld for taxes 10b5-1 −10,732 $28.17 $302K 62,286
2026-03-04 Stokes Frank Chief Financial Officer Option exercise 10b5-1 +3,800 $3.38 $13K 66,086
2026-03-04 Stokes Frank Chief Financial Officer Option exercise · Restricted Stock Units 10b5-1 −12,186 24,372
2026-03-04 Stokes Frank Chief Financial Officer Option exercise · Restricted Stock Units 10b5-1 −11,960 35,878
2026-03-04 Stokes Frank Chief Financial Officer Option exercise · Stock option (right to buy) 10b5-1 −3,800 14,912
2026-03-03 Stokes Frank Chief Financial Officer Sale 10b5-1 −5,300 $27.32 $145K 54,183
2026-03-03 Stokes Frank Chief Financial Officer Sale 10b5-1 −1,700 $27.81 $47K 52,483
2026-03-03 Stokes Frank Chief Financial Officer Shares withheld for taxes 10b5-1 −3,611 $27.57 $100K 48,872
2026-03-03 Stokes Frank Chief Financial Officer Grant or award · Restricted Stock Units 10b5-1 +48,367 48,367
2026-01-12 Stokes Frank Chief Financial Officer Grant or award +8,124 58,450
2026-01-12 Stokes Frank Chief Financial Officer Grant or award · Performance-Based Stock Unit +8,124 8,124
2025-12-11 Stokes Frank Chief Financial Officer Sale −4,496 $37.45 $168K 50,326
2025-12-10 Stokes Frank Chief Financial Officer Option exercise +6,170 57,580
2025-12-10 Stokes Frank Chief Financial Officer Shares withheld for taxes −2,758 $38.02 $105K 54,822
2025-12-10 Stokes Frank Chief Financial Officer Option exercise · Restricted Stock Units −6,170 0
2025-12-09 Stokes Frank Chief Financial Officer Option exercise +14,616 57,944
2025-12-09 Stokes Frank Chief Financial Officer Shares withheld for taxes −6,534 $38.25 $250K 51,410

Page 1 of 3 · 47 trades