8-K current report · filed Jun 17, 2026

Verastem, Inc. (VSTM) 8-K Current Report: June 17, 2026

Item 7.01Item 8.01Item EX-99.1VSTM overview

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Verastem, Inc. (VSTM) filed an 8-K current report with the SEC on June 17, 2026 reporting Item 7.01 (Regulation FD Disclosure), Item 8.01 (Other Events), Item EX-99.1 (Exhibit EX-99.1). Positive updated RAMP 205 results for avutometinib plus defactinib in first-line metastatic pancreatic ductal carcinoma.

Verastem, Inc. 8-K event analysis

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Item 7.01 · Regulation FD Disclosure

  • Positive updated RAMP 205 results for avutometinib plus defactinib in first-line metastatic pancreatic ductal carcinoma
  • Combination evaluated alongside standard-of-care chemotherapy in mPDAC
  • Clinical update supports Verastem’s pancreatic cancer development strategy
  • Full efficacy and safety details available in Exhibit 99.1

Item 8.01 · Other Events

  • RAMP 205 RP2D cohort showed 86% six-month overall survival and 68% six-month progression-free survival in first-line mPDAC
  • Confirmed objective response rate reached 52%, with tumor shrinkage in 83% of patients
  • Nine patients remained on treatment at 9.8-month median follow-up, supporting continued clinical activity
  • No new safety signals observed, reducing near-term tolerability concerns
  • TARGET-D 201 Phase 2 registration-directed trial initiated for VS-7375 in KRAS G12D-mutated second-line mPDAC at 900 mg daily

Item EX-99.1 · Exhibit EX-99.1

  • RAMP 205 interim data: 6-month overall survival 86%, progression-free survival 68%, and confirmed response rate 52% in 29 patients
  • 90% presented with Stage IV disease; 83% experienced tumor shrinkage, supporting activity in a highly aggressive setting
  • Nine patients remained on treatment; median follow-up 9.8 months, with survival data still maturing
  • No new safety signals reported, supporting continued development with gemcitabine and nab-paclitaxel
  • Single-arm Phase 1b/2a results remain preliminary; final survival data and future development decisions are key catalysts

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