---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-179214"
form_type: "8-K"
ticker: "ERAS"
cik: "0001761918"
company_name: "Erasca, Inc."
filed_at: "2026-04-27T23:59:59+00:00"
generated_at: "2026-05-15T03:54:08.160934+00:00"
event_type: "litigation"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Erasca faces patent infringement and trade secret allegations from Revolution Medicines over ERAS-0015

## Summary
- RevMed alleges ERAS-0015 infringes U.S. Patent No. 12,409,225 and misappropriated trade secrets.
- Erasca believes the allegations are without merit and will vigorously contest them.
- Erasca also announced a conference call at 4:30pm ET today to discuss preliminary Phase 1 data for ERAS-0015.
- No data results were disclosed in this filing; only the call schedule is provided.

## SEC filing metadata
- accession: 0001193125-26-179214
- form_type: 8-K
- ticker: ERAS
- cik: 0001761918
- company_name: Erasca, Inc.
- filed_at: 2026-04-27T23:59:59+00:00
- event_type: litigation
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 7.01, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1761918/000119312526179214/0001193125-26-179214-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1761918/000119312526179214/eras-20260427.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-179214
- JSON: https://secwatch.observer/filing/0001193125-26-179214.json
- Plain text: https://secwatch.observer/filing/0001193125-26-179214.txt

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