Insidra
INSIDRA

Trading Intelligence

DB
Daniel Bradbury
Director

Daniel Bradbury insider trades: Castle Biosciences (CSTL) stock buys and sales

Director, Castle Biosciences Last trade Feb 5, 2025 305 Form 4 filings
$0
Sold, last 12 months
0 sales
$0
Bought, last 12 months
0 buys
275
Open-market trades
since 2005
11
Companies
last trade 2025

Trades on the price chart

Daily close, with an arrow on each day they bought or sold

Companies

Where Daniel reports to the SEC

VANI
VANIVivani Medical
Director · last filing Jul 28, 2026
No market trades
EQ
EQEquillium
Chairman · last filing May 29, 2026
No market trades
CSTL
CSTLCastle Biosciences
Director · last filing May 27, 2026
-$40.0M
NUVB
NUVBNuvation Bio
Director · last filing Feb 26, 2021
No market trades
ICPT
ICPTIntercept Pharmaceuticals
Director · last filing Nov 13, 2023
+$500K
ILMN
ILMNIllumina
Director · last filing May 26, 2017
-$17.2M

and 5 more companies

Open-market buys and sales

275 trades reported on SEC Form 4, newest first

DateStockTypeValue
Feb 5, 2025CSTL↓ Sell$141K
Feb 5, 2025CSTL↓ Sell$40K
Feb 5, 2025CSTL↓ Sell$40K
Jan 6, 2025CSTL↓ Sell$146K
Jan 6, 2025CSTL↓ Sell$42K
Jan 6, 2025CSTL↓ Sell$42K
Dec 3, 2024CSTL↓ Sell$155K
Dec 3, 2024CSTL↓ Sell$44K
Dec 3, 2024CSTL↓ Sell$44K
Nov 1, 2024CSTL↓ Sell$174K
Nov 1, 2024CSTL↓ Sell$49K
Nov 1, 2024CSTL↓ Sell$49K
Oct 7, 2024CSTL↓ Sell$148K
Oct 7, 2024CSTL↓ Sell$42K
Oct 7, 2024CSTL↓ Sell$42K
Sep 5, 2024CSTL↓ Sell$146K
Sep 5, 2024CSTL↓ Sell$41K
Sep 5, 2024CSTL↓ Sell$41K
Aug 12, 2024CSTL↓ Sell$134K
Aug 12, 2024CSTL↓ Sell$38K
Aug 12, 2024CSTL↓ Sell$38K
May 6, 2024CSTL↓ Sell$196K
May 6, 2024CSTL↓ Sell$196K
May 6, 2024CSTL↓ Sell$182K
Apr 8, 2024CSTL↓ Sell$17K
Apr 8, 2024CSTL↓ Sell$17K
Apr 8, 2024CSTL↓ Sell$16K
Apr 5, 2024CSTL↓ Sell$151K
Apr 5, 2024CSTL↓ Sell$151K
Apr 5, 2024CSTL↓ Sell$140K
Mar 4, 2024CSTL↓ Sell$165K
Mar 4, 2024CSTL↓ Sell$165K
Mar 4, 2024CSTL↓ Sell$153K
Feb 7, 2024CSTL↓ Sell$16K
Feb 7, 2024CSTL↓ Sell$16K
Feb 7, 2024CSTL↓ Sell$15K
Feb 6, 2024CSTL↓ Sell$169K
Feb 6, 2024CSTL↓ Sell$169K
Feb 6, 2024CSTL↓ Sell$157K
Jan 5, 2024CSTL↓ Sell$162K
Jan 5, 2024CSTL↓ Sell$162K
Jan 5, 2024CSTL↓ Sell$151K
Dec 13, 2023CSTL↓ Sell$16K
Dec 13, 2023CSTL↓ Sell$16K
Dec 13, 2023CSTL↓ Sell$15K
Dec 8, 2023CSTL↓ Sell$47K
Dec 8, 2023CSTL↓ Sell$47K
Dec 8, 2023CSTL↓ Sell$44K
Dec 6, 2023CSTL↓ Sell$1K
Dec 6, 2023CSTL↓ Sell$1K

Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.

Other CSTL insiders

Open-market trades in the last 12 months

Derek J Maetzold
Pres. & Chief Exec. Officer
27 sales
Nov 2, 2026
Tobin W Juvenal
Chief Commercial Officer
13 sales
Oct 28, 2026
Kristen M Oelschlager
Chief Operating Officer
8 sales
Oct 1, 2026
G Bradley Cole
Director
1 sale
Mar 5, 2026
Frank Stokes
Chief Financial Officer
4 sales
Mar 5, 2026

About Daniel Bradbury's insider trades

Daniel Bradbury is a director at Castle Biosciences (CSTL). Since Jul 7, 2005, Daniel has reported 5 open-market purchases worth $1.2M and 270 sales worth $61.7M on SEC Form 4. There have been no open-market trades in the last 12 months.

66 sales (28% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.

Their filings also include grants and awards (98 filings), option exercises (86 filings), gifts (14 filings), shares returned to the company (5 filings). These aren't open-market trades and aren't counted above.

How to read insider trades

Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every CSTL insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.