Erasca IncClass action lawsuit and alleged securities violations regarding ERAS-0015, plus patent infringement claims from Revolution Medicines, causing stock to drop significantly.
Robbins Geller Rudman & Dowd LLP announced a class action lawsuit against Erasca, Inc. for alleged securities violations, with a lead plaintiff deadline of August 10, 2026. The lawsuit, covering purchasers of Erasca common stock between January 14, 2025 and April 26, 2026, alleges the company made false or misleading statements regarding its cancer therapy candidate ERAS-0015. Specifically, the complaint claims Erasca failed to disclose that preclinical data for ERAS-0015 relied on improper comparisons to Revolution Medicines, Inc., potentially violating patent and trade secret protections. On April 27, 2026, Erasca disclosed a letter from Revolution Medicines alleging patent infringement and trade secret misappropriation, causing the stock to fall nearly 11%. Later that day, Erasca reported preliminary Phase I clinical data for ERAS-0015, including a patient death, and acknowledged that cross-study comparisons were not based on head-to-head trials, leading to a further stock decline of more than 48%.
Erasca IncClass action lawsuit and alleged securities violations regarding ERAS-0015, plus patent infringement claims from Revolution Medicines, causing stock to drop significantly.
Revolution Medicines IncRevolution Medicines is the competitor whose patent and trade secret protections were allegedly infringed by Erasca, strengthening its competitive position.