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AFTER HRS · 17:25 ET
Market ClerkRecap
Wed Oct 21 · after hours2 signals today106 insider buys this week · $305.5MCIRO short report next: Oct 31The week ahead

CSTL

CASTLE BIOSCIENCES INC
NASDAQ · HEALTH CARE · SERVICES-MEDICAL LABORATORIES
32.17
+0.20 +0.64%
USD · Oct 19, 07:41 p.m. ET
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Work order
24
FLAG · insiders 25, shorts 22
Insiders, 90 days
−$4.2M
net selling · 0 buys, 36 sells
Congress, 90 days
0 / 0
no disclosures naming it
Big money
0 / 15
none of the tracked funds disclose it
Calls on record
0
nobody we score has called it yet
MKT CAP $982.6MP/E —DIV YIELD —FCF YIELD -0.05%REV TTM $357.3M +3.2%NET INCOME −$19.4MNET CASH $52M52W 18.15 – 43.04NEXT EARNINGS Nov 5SEC XBRL · TTM TO Invalid Date

One year, everything drawn on

252 SESSIONS · DAILY CLOSES
45352616Oct 12 · Chief Commercial Officer sell $111KOct 5 · Pres. & Chief Exec. Officer sell $97KOct 5 · Pres. & Chief Exec. Officer sell $114KOct 5 · Pres. & Chief Exec. Officer sell $305KOct 1 · Chief Operating Officer sell $49KOct 1 · Chief Operating Officer sell $100KSep 30 · Chief Commercial Officer sell $35KSep 29 · Chief Commercial Officer sell $197KSep 21 · Pres. & Chief Exec. Officer sell $96KSep 21 · Pres. & Chief Exec. Officer sell $113KSep 21 · Pres. & Chief Exec. Officer sell $303KSep 15 · Chief Commercial Officer sell $116KSep 14 · Chief Commercial Officer sell $107KSep 11 · Pres. & Chief Exec. Officer sell $2KSep 11 · Pres. & Chief Exec. Officer sell $3KSep 11 · Pres. & Chief Exec. Officer sell $7KSep 11 · Pres. & Chief Exec. Officer sell $85KSep 11 · Pres. & Chief Exec. Officer sell $100KSep 11 · Pres. & Chief Exec. Officer sell $268KSep 1 · Chief Operating Officer sell $7KSep 1 · Chief Operating Officer sell $132KAug 31 · Chief Commercial Officer sell $57KAug 28 · Pres. & Chief Exec. Officer sell $6KAug 28 · Pres. & Chief Exec. Officer sell $7KAug 28 · Pres. & Chief Exec. Officer sell $32KAug 28 · Pres. & Chief Exec. Officer sell $9KAug 28 · Pres. & Chief Exec. Officer sell $9KAug 28 · Pres. & Chief Exec. Officer sell $9KAug 28 · Pres. & Chief Exec. Officer sell $9KAug 28 · Pres. & Chief Exec. Officer sell $71KAug 28 · Pres. & Chief Exec. Officer sell $83KAug 28 · Pres. & Chief Exec. Officer sell $380KAug 25 · Chief Commercial Officer sell $317KAug 25 · Chief Operating Officer sell $181KAug 25 · Chief Operating Officer sell $245KAug 24 · Chief Operating Officer sell $412KJul 30 · 10-Q filed (Q2 2026)Jul 30 · 10-Q filed (Q1 2026)Feb 26 · 10-K filed (FY 2025)Feb 26 · 10-K filed (Q4 2025)Nov 3 · 10-Q filed (Q3 2025)Jul 30 · 10-Q filed (Q2 2025)Jul 30 · 10-Q filed (Q1 2025)Feb 26 · 10-K filed (FY 2024)Feb 26 · 10-K filed (Q4 2024)Nov 3 · 10-Q filed (Q3 2024)Nov 3 · 10-Q filed (Q2 2024)Nov 3 · 10-Q filed (Q1 2024)Feb 26 · 10-K filed (FY 2023)Feb 26 · 10-K filed (Q4 2023)OCT 2025JAN 2026APRJUL
Insider buyInsider sellCongress buy, above the lineCongress sell, below10-K / 10-Q filedHOVER A MARKER FOR THE FILING
THE WORK ORDER · 2026-10-21
Insiders (90d): $4.2M net selling
Shorts (latest report): 2M short · +223K last period
Every line of the math
24FLAG

Congress is trading it

No STOCK Act disclosure names CSTL.

Insider activity

ALL 36
DateInsiderTypeValue
Oct 12Chief Commercial OfficerSell$111K
Oct 5Pres. & Chief Exec. OfficerSell$97K
Oct 5Pres. & Chief Exec. OfficerSell$114K
Oct 5Pres. & Chief Exec. OfficerSell$305K
Oct 1Chief Operating OfficerSell$49K
Oct 1Chief Operating OfficerSell$100K
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