Why Is Purple Biotech Stock Gaining Wednesday? - Purple Biotech (NASDAQ:PPBT)
Purple Biotech (NASDAQ:PPBT) shares rose 22.89% premarket Wednesday after the U.S. Patent Office granted a Notice of Allowance for its tri-specific antibody constructs. The patent expands the company's IP for its CAPTN-3 platform, which aims to accelerate cancer treatment development. Preclinical data for lead candidate IM1240 showed anti-tumor activity, with human trials planned for 2027.


