CASTLE BIOSCIENCES INC

$CSTL

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Institutional coverage

9 13F filers hold $CSTL.

13F holders

9

Insider buys · 90d

0

Congress · 90d

0

Smart Money · top-200 alpha cohort

No exposure this quarter

No top-200 alpha managers currently hold $CSTL. The institutional holders table below shows the broader 13F picture.

Institutional holders

Top 9 of 9 · Source: 13F-HR

Vanguard Group Inc.

Renaissance Technologies

0.01% of portfolio

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

Tudor Investment Corp. Et Al

Erste Asset Management GmbH

Insider activity · last 90 days

50 transactions · 1 filers

03 Sep 2026

· EX/ACQ

—

—

M

03 Sep 2026

▼ SOLD

—

—

S

03 Sep 2026

▼ SOLD

—

—

S

03 Sep 2026

· EX/ACQ

—

—

M

02 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

· EX/ACQ

—

—

M

01 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

▼ SOLD

—

—

S

01 Sep 2026

▼ SOLD

—

—

S

Transaction codes: P open-market purchase · S sale · M option exercise · A grant · F tax-withhold sale. Insider names link to each individual's expert page.

Congress trades · last 90 days

No Congress trades

No STOCK Act filings reference $CSTL in the recent window.

Convergence · $CSTL

Pattern cards reflect public SEC EDGAR and Congressional filing data only. Detection uses filing dates; trade execution dates may differ. Past convergence patterns do not predict future returns. Nothing here is investment advice.

Source data: SEC EDGAR · 13F-HR · Form 4 · U.S. House Clerk PTR (disclosures-clerk.house.gov) · Senate eFD (senate.gov) · Last refreshed 17:07 UTC.