Castle Biosciences Insider Trading Update
Ticker: CSTL · Form: 4 · Filed: 2026-04-08T16:34:24-04:00
Sentiment: neutral
Topics: insider-transaction, form-4
Related Tickers: CSTL
TL;DR
Castle Biosciences insider Derek Maetzold filed a Form 4 on 4/8/26 detailing ownership changes from 4/6/26.
AI Summary
On April 8, 2026, Derek J. Maetzold, a reporting person for Castle Biosciences Inc., filed a Form 4. This filing details changes in the beneficial ownership of securities, specifically reporting transactions that occurred on April 6, 2026. The exact nature of these transactions, such as purchases or sales, and the number of shares involved are not detailed in the provided excerpt.
Why It Matters
Form 4 filings indicate changes in stock ownership by company insiders, which can signal their confidence or concerns about the company's future performance.
Risk Assessment
Risk Level: medium — Form 4 filings themselves are routine, but the specific transactions can indicate insider sentiment, which may influence stock price.
Key Numbers
- 2026-04-08 — Filing Date (Date the Form 4 was accepted by the SEC.)
- 2026-04-06 — Period of Report (Date of the reported securities transactions.)
Key Players & Entities
- Derek J. Maetzold (person) — Reporting Person
- CASTLE BIOSCIENCES INC (company) — Issuer
- 0001447362 (company) — Issuer CIK
- 0001628280-26-024264 (filing_id) — SEC Accession Number
FAQ
Who is the reporting person in this filing?
The reporting person is Derek J. Maetzold.
What is the name of the issuer company?
The issuer company is CASTLE BIOSCIENCES INC.
What type of form was filed?
A Form 4 - Statement of changes in beneficial ownership of securities was filed.
On what date was the filing accepted by the SEC?
The filing was accepted on April 8, 2026.
What period does the report cover?
The period of report is April 6, 2026.
From the Filing
EDGAR Filing Documents for 0001628280-26-024264 This page uses Javascript. Your browser either doesn't support Javascript or you have it turned off. To see this page as it is meant to appear please use a Javascript enabled browser. SEC.gov EDGAR Latest Filings Filings search tools Filing Detail SEC Home » Company Search » Current Page Form 4 - Statement of changes in beneficial ownership of securities: SEC Accession No. 0001628280-26-024264 Filing Date 2026-04-08 Accepted 2026-04-08 16:34:24 Documents 1 Period of Report 2026-04-06 Document Format Files Seq Description Document Type Size 1 FORM 4 wk-form4_1775680461.html 4 1 FORM 4 wk-form4_1775680461.xml 4 21435 Complete submission text file 0001628280-26-024264.txt 22926 Mailing Address 820 S. FRIENDSWOOD DRIVE SUITE 201 FRIENDSWOOD TX 77546 Business Address MAETZOLD DEREK J ( Reporting ) CIK : 0001239501 (see all company filings) Type: 4 | Act: 34 | File No.: 001-38984 | Film No.: 26848547 Mailing Address 1500 W. PARKWOOD AVE. SUITE 400 FRIENDSWOOD TX 77546 Business Address 1500 W. PARKWOOD AVE. SUITE 400 FRIENDSWOOD TX 77546 866-788-9007 CASTLE BIOSCIENCES INC ( Issuer ) CIK : 0001447362 (see all company filings) EIN. : 770701774 | State of Incorp.: DE | Fiscal Year End: 1231 SIC : 8071 Services-Medical Laboratories (CF Office: 08 Industrial Applications and Services)