12 Healthcare Stocks with Insider Buying in 2025

Page 10 of 10

1. Regencell Bioscience Holdings Limited (NASDAQ:RGC)

Insider Shares: 88.56%

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&P Global BMI Index, boosting its visibility among institutional and passive investors. This inclusion may enhance liquidity and help stabilize the stock, which has been highly volatile. Despite this progress, the business continues to face fundamental challenges, including zero revenue, ongoing losses, and uncertain regulatory pathways for its treatments.

On the clinical front, Regencell Bioscience Holdings Limited (NASDAQ:RGC) reported positive results from its second efficacy trial using standardized TCM formulae for ADHD and ASD, showing a mean symptom improvement of 37% with no adverse side effects. While encouraging, no FDA-approved products have been announced yet, and the treatments remain investigational.

Regencell Bioscience Holdings Limited (NASDAQ:RGC)’s stock experienced extreme volatility in mid-2025, peaking with an approximate 14,899% year-to-date gain by June, driven by speculative trading, a stock split, and excitement over trial results. Following this peak, shares saw sharp intra-day swings and a pullback, though technical indicators in September suggest a potential upward trend, supported by positive momentum and movement above its 50-day moving average.

While we acknowledge the potential of RGC to grow, our conviction lies in the belief that some AI stocks hold greater promise for delivering higher returns and have limited downside risk. If you are looking for an AI stock that is more promising than RGC and that has 100x upside potential, check out our report about this cheapest AI stock.

READ NEXT: 30 Stocks That Should Double in 3 Years and 11 Hidden AI Stocks to Buy Right Now.

Disclosure: None. Insider Monkey focuses on uncovering the best investment ideas of hedge funds and insiders. Please subscribe to our free daily e-newsletter to get the latest investment ideas from hedge funds’ investor letters by entering your email address below.

Page 10 of 10