FS
Frank Stokes
Chief Financial Officer

Frank Stokes insider trades: Castle Biosciences (CSTL) stock sales

Chief Financial Officer, Castle Biosciences Last trade Mar 5, 2026 34 Form 4 filings
$717K
Sold, last 12 months
4 sales
$0
Bought, last 12 months
0 buys
12
Open-market trades
since 2020
2
Companies
last trade 2026

Trades on the price chart

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

Companies

Where Frank reports to the SEC

Open-market buys and sales

12 trades reported on SEC Form 4, newest first

DateStockTypeValue
Mar 5, 2026CSTL↓ Sell$168K
Mar 3, 2026CSTL↓ Sell$192K
Dec 11, 2025CSTL↓ Sell$168K
Nov 11, 2025CSTL↓ Sell$189K
Feb 20, 2025CSTL↓ Sell$215K
Nov 15, 2024CSTL↓ Sell$207K
Aug 7, 2024CSTL↓ Sell$257K
Jun 17, 2021CSTL↓ Sell$1.1M
Jan 12, 2021CSTL↓ Sell$1.2M
Nov 13, 2020CSTL↓ Sell$1.3M
Oct 14, 2020CSTL↓ Sell$1.4M
Sep 15, 2020CSTL↓ Sell$1.3M

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

About Frank Stokes's insider trades

Frank Stokes is Chief Financial Officer at Castle Biosciences (CSTL). Since Sep 15, 2020, Frank has reported no open-market purchases and 12 sales worth $7.7M on SEC Form 4. In the last 12 months: 4 sales ($717K).

Their filings also include grants and awards (16 filings), option exercises (16 filings), shares withheld for taxes (9 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.