Erasca, Inc.
Case Overview
10 Days Left to Seek Lead Plaintiff
| Lead Plaintiff Deadline: | Lead Plaintiff Deadline: 08/10/2026 |
| Status: | Status: Investigating |
| Company Name: | Company Name: Erasca, Inc. |
| Court: | Court: Southern District of California |
| Case Number: | Case Number: 3:26cv03481 |
| Class Period: | Class Period: 01/14/2025 - 04/26/2026 |
| Ticker: | Ticker: ERAS |
| Related Attorneys: | Lead Attorneys: Thomas W. Elrod |
| Related Practices: | Related Practices: Securities |
The lawsuit alleges that Erasca, along with its CEO and CFO, violated federal securities laws by making false and misleading statements about its lead oncology drug candidate, ERAS-0015. The company presented ERAS-0015 as a potential “best-in-class” therapy and highlighted purportedly superior preclinical results compared to Revolution Medicines’ competing drug candidate, RMC-6236, while failing to disclose that those comparisons were allegedly improper, exposing the Company to patent and trade secret disputes, and lacked a reasonable basis.
On April 27, 2026, Erasca disclosed in a Form 8-K that it had received a letter from legal counsel for RevMed alleging that Erasca’s ERAS0015 infringes a RevMed patent (U.S. Patent No. 12,409,225) and is connected to alleged trade secret misappropriation. RevMed also alleged that Erasca had “improperly compared preclinical data of ERAS-0015 and RMC-6236 in public disclosures” and demanded Erasca cease making “deceptive and untrue comparative statements comparing ERAS-0015 and RMC-6236.” Erasca stated that it believes the assertions are without merit and intends to contest the allegations. On this news, the price of Erasca shares declined by $2.34 per share, or approximately 11%, from $21.49 per share on April 24, 2026 to close at $19.15 on April 27, 2026.
On April 27, 2026, Erasca filed a separate Form 8-K reporting preliminary Phase 1 clinical data for ERAS-0015 and disclosing that one patient that received 24 mg of ERAS-0015 had died approximately a month after starting ERAS-0015. The patient was classified as a “Grade 3 TRAE of pneumonitis” that “progressed to Grade 5 after withdrawal of supportive care per patient decision.” Erasca further stated that comparisons between ERAS-0015 and other product candidates, including RMC-6236, were based on cross-study analyses and “not based on any head-to-head clinical trials,” and that such comparisons are “inherently limited and such data may not be directly comparable.” On this news, the price of Erasca shares declined by $9.25 per share, or approximately 48%, from $19.15 per share on April 27, 2026 to close at $9.90 on April 28, 2026.
On April 27, 2026, Erasca disclosed in a Form 8-K that it had received a letter from legal counsel for RevMed alleging that Erasca’s ERAS0015 infringes a RevMed patent (U.S. Patent No. 12,409,225) and is connected to alleged trade secret misappropriation. RevMed also alleged that Erasca had “improperly compared preclinical data of ERAS-0015 and RMC-6236 in public disclosures” and demanded Erasca cease making “deceptive and untrue comparative statements comparing ERAS-0015 and RMC-6236.” Erasca stated that it believes the assertions are without merit and intends to contest the allegations. On this news, the price of Erasca shares declined by $2.34 per share, or approximately 11%, from $21.49 per share on April 24, 2026 to close at $19.15 on April 27, 2026.
On April 27, 2026, Erasca filed a separate Form 8-K reporting preliminary Phase 1 clinical data for ERAS-0015 and disclosing that one patient that received 24 mg of ERAS-0015 had died approximately a month after starting ERAS-0015. The patient was classified as a “Grade 3 TRAE of pneumonitis” that “progressed to Grade 5 after withdrawal of supportive care per patient decision.” Erasca further stated that comparisons between ERAS-0015 and other product candidates, including RMC-6236, were based on cross-study analyses and “not based on any head-to-head clinical trials,” and that such comparisons are “inherently limited and such data may not be directly comparable.” On this news, the price of Erasca shares declined by $9.25 per share, or approximately 48%, from $19.15 per share on April 27, 2026 to close at $9.90 on April 28, 2026.