We recently compiled a list of the 12 Healthcare Stocks with Insider Buying in 2025. Regencell Bioscience Holdings Limited is one of them. Regencell Bioscience Holdings Limited (NASDAQ:RGC) tops our list for being one of the stocks with insider buying. It is a Hong Kong-based biopharmaceutical company developing Traditional Chinese Medicine (TCM) treatments for neurocognitive disorders such as ADHD and autism spectrum disorder (ASD). A key milestone came on September 21, 2025, when RGC was added to the S ...