Derek J Maetzold

Pres. & Chief Exec. Officer · Castle Biosciences

Derek J Maetzold (Pres. & Chief Exec. Officer) filed 22 Form 4 reports in the trailing twelve months (0 purchases, 22 sales), most often in Castle Biosciences, Inc. (CSTL). The largest single filing was $1.2M of CSTL (31,334 sh across 2 lots, as filed), executed Dec 15 2025. Data as of Nov 8 2026.

Add to watchlist

Return, ttmiAverage return per filing, trailing twelve months

–

no purchases on file

Delay-adjustediThe same average, entered at disclosure dates

–

returns measure stock purchases only

Filings, ttm

0 buys · 22 sells

Median delay

–

measured on stock purchases

Volume, ttmiDollar value disclosed in the trailing twelve months

$8.5M

shares × price, as filed

Last traded

Nov 2

Filed Nov 4

Median ADV $11.6M across their filed names

Open performance→

Volume by month

Buys $0 Sells $11.4M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on

Healthcare 22 filings

Sector per market data · by filing · past 12 months

Most traded names

CSTL

Castle Biosciences, Inc. CSTL · 0 buys · 28 sells 28 filings

Recent filings

CSTLSALE Castle Biosciences, Inc. View filing → $151K
6,214 sh × $24.29
Exec Jul 1
Filed Jul 6 · 4:25 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $130K
6,214 sh × $20.86
Exec Jun 1
Filed Jun 3 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $117K
5,308 sh × $22.08
Exec May 7
Filed May 11 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $156K
6,214 sh × $25.03
Exec Apr 6
Filed Apr 8 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $484K
18,650 sh × $25.93
Exec Mar 17
Filed Mar 19 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $789K
30,653 sh across 2 lots
Exec Mar 13
Filed Mar 17 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $1.0M
40,489 sh across 2 lots
Exec Mar 11
Filed Mar 13 · 5:30 PM ET CSTLSALE Castle Biosciences, Inc. View filing → $128K
3,200 sh × $39.91
Exec Feb 3
Filed Feb 5 · 5:30 PM ET More filings →