Entero shares surge 24.28% premarket after rebranding to GridAI and acquiring grid-edge AI firm GRID AI.

Entero Therapeutics (NASDAQ: ENTO) surged 24.28% in premarket trading following its announcement to rebrand as GridAI Technologies Corp. and adopt the ticker symbol "GRDX," effective December 1, 2025. The move aligns with its acquisition of 100% of GRID AI Corp, a provider of AI-driven grid-edge software for energy management. The rebranding reflects the company’s strategic pivot toward AI and energy infrastructure, with CEO Jason Sawyer emphasizing enhanced grid intelligence and resilience through real-time supply-demand orchestration. The name and ticker change, which does not alter its biopharmaceutical operations or financial obligations, signals a dual focus on its existing GI therapies and new energy-tech opportunities, likely driving investor optimism about expanded growth prospects.