GSK stock slips after $2.2 billion RAPT deal — what investors watch before the open
GSK’s U.S.-listed shares fell 1.2% to $47.65 premarket after it agreed to buy RAPT Therapeutics for $2.2 billion, paying a 65% premium for rights to a mid-stage food allergy drug. The deal, led by new CEO Luke Miels, comes as GSK faces pressure to offset losses from expiring HIV drug patents. Pfizer will exit the ViiV Healthcare joint venture, with Shionogi raising its stake to 21.7%.