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CLOSED · 15:00 ET
Market Clerk
Sun Sep 6 · markets closed2 signals today321 insider buys this week · $404MCIRO short report next: Sep 15The week ahead

CSTL

CASTLE BIOSCIENCES INC
NASDAQ · HEALTH CARE · SERVICES-MEDICAL LABORATORIES
32.91
+0.26 +0.80%
USD · close Sep 4
WatchTime Machine
Work order
24
FLAG · insiders 25, shorts 23
Insiders, 90 days
−$2M
net selling · 0 buys, 17 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 $1BP/E —DIV YIELD —FCF YIELD -0.05%REV TTM $357.3M +3.2%NET INCOME −$19.4MNET CASH $52M52W 18.15 – 43.04SEC XBRL · TTM TO Invalid Date

One year, everything drawn on

251 SESSIONS · DAILY CLOSES
45352616Sep 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)SEP 2025OCTJAN 2026APRJUL
Insider buyInsider sellCongress buy, above the lineCongress sell, below10-K / 10-Q filedHOVER A MARKER FOR THE FILING
THE WORK ORDER · 2026-09-06
Insiders (90d): $2M net selling
Shorts (latest report): 1.8M short · +192K last period
Every line of the math
24FLAG

Congress is trading it

No STOCK Act disclosure names CSTL.

Insider activity

ALL 17
DateInsiderTypeValue
Sep 1Chief Operating OfficerSell$7K
Sep 1Chief Operating OfficerSell$132K
Aug 31Chief Commercial OfficerSell$57K
Aug 28Pres. & Chief Exec. OfficerSell$6K
Aug 28Pres. & Chief Exec. OfficerSell$7K
Aug 28Pres. & Chief Exec. OfficerSell$32K
Watch CSTL. Know when insiders buy.
One email the day a filing lands. Free.