China Headquarters

US Division


Focused on the discovery and preclinical development of innovative biologics for unmet medical needs



Mingjiu Chen, Ph.D.

Chief Executive Officer, President

Dr. Mingjiu Chen, President and CEO. Over 20 years of biopharma antibody discovery experience. Before starting up Biosion, Dr Chen served as Senior Director of Operations at Strategic Diagnostics (SDIX) Inc., Senior Scientist at Abbott Laboratories (Currently AbbVie). Dr. Chen received his Ph.D. degree in Molecular Medicine from the University of Texas Health Science Center at San Antonio, MS degree in Animal Genetics from Central China Agricultural University, and BS degree in Animal Science from Inner Mongolian Agricultural University.





Bill Tan, Ph.D.

Chief Scientific Officer, Vice President

Dr. Bill Tan, Chief Scientific Officer and Vice President. Over 15 years of drug discovery and antibody engineering experience. Before joining Biosion Inc., Dr. Tan served as Principle Investigator at Novartis Institute of Biomedical Research (China) and Principle Scientist at Pfizer Oncology Research Unit (US). Dr. Tan received his Ph.D. in molecular medicine from University of Texas Health Science Center at San Antonio, completed his postdoc research training in Dr. Karin's Lab at UCSD, and received his MS degree and BS degree in Biochmistry from Nankai University.




Cathy Zhong, M.D., Ph.D.

BD & Strategic Alliance VP

Dr. Cathy Zhong, Chief Operating Officer, Vice President. Over 20 years of biopharma regulatory and operation experience. Before joining Biosion Inc., Dr. Zhong served as Senior Regulatory Science Strategy Manager at J.R. Simplot and Senior Regulatory Science Manager at DuPont Pioneer. Dr. Zhong received her Ph.D. degree in Genetics from University of the Philippines, MS degree in Pharmacology from Fujian Medical University, and M.D. from Xuzhou Medical University.





Mark Ma

Operations VP

Over 20 years of extensive experience on both small molecule and biological drug discovery and preclinical studies.  Before joining Biosion, Dr. Ma served as Director of Research and Development at FZata, Inc.  and Senior Scientist at Lexicon Pharmaceuticals, Inc.  Dr. Ma received his Ph.D. degree in Biotechnology from University of Milan, Italy, MS degree in Neuropharmacology and BS degree in Pharmacy from China Pharmaceutical University.