8-K current report · filed Apr 20, 2026

Arcus Biosciences, Inc. (RCUS) 8-K Current Report: April 20, 2026

Item 8.01RCUS overview

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Arcus Biosciences, Inc. (RCUS) filed an 8-K current report with the SEC on April 20, 2026 reporting Item 8.01 (Other Events). Phase 3 STAR-121 discontinued for futility in first-line metastatic NSCLC.

Arcus Biosciences, Inc. 8-K event analysis

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Item 8.01 · Other Events

  • Phase 3 STAR-121 discontinued for futility in first-line metastatic NSCLC
  • Domvanalimab combination failed pre-planned futility analysis versus pembrolizumab plus chemotherapy
  • Exploratory zimberelimab combination showed consistent overall survival versus pembrolizumab combination
  • Gilead ending option continuation payment; rights to additional programs expire July 14, 2026
  • Arcus retains full casdatifan rights except territories licensed to Taiho; EDGE-Lung also discontinued

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