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Samsung Biologics to Acquire GSK’s Human Genome Sciences Rockville Manufacturing Site for $280 Million

Closing is slated for late Q1 2026, positioning the facility to join Samsung’s global CDMO network.

Overview

  • Samsung Biologics America signed a definitive agreement to purchase the Rockville, Maryland manufacturing assets from GSK for $280 million.
  • Closing is anticipated toward the end of Q1 2026, subject to customary conditions.
  • The facility includes two cGMP plants with a combined 60,000 liters of drug‑substance capacity supporting both clinical and commercial production.
  • Samsung will retain more than 500 employees, continue existing product manufacturing, and invest to expand capacity and upgrade technology.
  • Samsung plans to integrate the site into its global operations to offer multi‑site options, while GSK says the divestment secures U.S. manufacture of two medicines and aligns with its $30 billion U.S. R&D and manufacturing commitment.