---
schema_version: "secwatch.filing_event.v1"
accession: "0001447362-21-000215"
form_type: "8-K"
ticker: "CSTL"
cik: "0001447362"
company_name: "CASTLE BIOSCIENCES INC"
filed_at: "2021-09-09T23:59:59+00:00"
generated_at: "2026-06-29T04:47:29.063253+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "low"
source: SEC EDGAR
---

# Castle Biosciences presents at Wells Fargo Healthcare Conference with slide deck

## Summary
- Castle Biosciences presented at the 2021 Virtual Wells Fargo Healthcare Conference on September 9, 2021.
- Slide deck attached as Exhibit 99.1 titled 'Transforming the management of dermatologic conditions'.
- No specific financial or operational updates disclosed in the filing; full slide content not available.
- This is a standard conference presentation, not a new material event.

## SEC filing metadata
- accession: 0001447362-21-000215
- form_type: 8-K
- ticker: CSTL
- cik: 0001447362
- company_name: CASTLE BIOSCIENCES INC
- filed_at: 2021-09-09T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: low
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1447362/000144736221000215/0001447362-21-000215-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1447362/000144736221000215/cstl-20210909.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001447362-21-000215
- JSON: https://secwatch.observer/filing/0001447362-21-000215.json
- Plain text: https://secwatch.observer/filing/0001447362-21-000215.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.