Yang Jianxin is the founder of CStone Pharmaceuticals. Latest round: IPO. Based in Shanghai, China.
Dr. Jianxin Yang (also known as Dr. Jason Yang) is the CEO and Executive Director of CStone Pharmaceuticals, a biopharmaceutical company focused on oncology immunotherapies. He has actively increased his personal shareholding in the company, purchasing 700,000 shares in October 2025 and an additional 40,000 shares in November 2025, bringing his total holdings to approximately 71.49 million shares (4.84% of the company). Under his leadership, CStone has advanced multiple clinical trials, including the global Phase I trial of CS2009 and the publication of positive results from the GEMSTONE-303 study on sugemalimab.
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