Merck & Company, Inc. (MRK) Stock: Surges 12% on Moderna Cancer Trial Win

NewsWed, 19 Aug 2026 19:16:45 UTC2 hours ago
Merck & Company, Inc. (MRK) Stock: Surges 12% on Moderna Cancer Trial Win

TLDR

  • Merck stock jumps 12.12% after a major Phase 3 melanoma treatment trial win.

  • Merck and Moderna report positive Phase 3 results for their melanoma therapy.

  • Intismeran plus KEYTRUDA improves recurrence-free survival in melanoma patients.

  • Phase 3 results mark a major milestone for personalized mRNA cancer treatment.

  • Merck and Moderna plan to share the melanoma trial results with regulators.

Merck & Company, Inc. (MRK) stock surged 12.12% to $151.56 on Wednesday following positive Phase 3 melanoma trial results. Shares extended their rally after rising sharply from an intraday level near $135.17. The results strengthened Merck’s cancer pipeline as its collaboration with Moderna reached an important clinical milestone.



Merck & Co., Inc., MRK

Merck Stock Jumps After Phase 3 Melanoma Success

Merck and Moderna reported positive topline results from the Phase 3 INTerpath-001 clinical trial. The study evaluated intismeran autogene alongside Merck’s KEYTRUDA treatment in patients with surgically removed melanoma. Importantly, the trial met its primary endpoint for recurrence-free survival.

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