GSK stock ticks up after Summit cancer-trial tie-up — what investors watch next
GSK shares rose about 0.4% in early London trading after Summit Therapeutics announced a clinical trial collaboration to test ivonescimab with GSK’s experimental B7-H3 cancer drug. Patient dosing is expected to begin in mid-2026. GSK will report full-year results on Feb. 4. Senior managers recently acquired small amounts of GSK shares through company plans.