Park Soon-jae Net Worth

Park Soon-jae has an estimated net worth of $2.3 billion, according to Forbes Real-Time Billionaires, Park Soon-jae profile (figures as of October 20, 2026). That is up from $1.5 billion in 2024.

Park Soon-jae is a South Korean biochemist and businessman, and the cofounder and CEO of Alteogen, a biotechnology company that focuses on biosimilars and bio-betters. He was born on December 22, 1954, in Gunsan, South Korea, and Forbes describes him as self-made.

He graduated from Seoul High School in 1973 and earned a bachelor's degree in biochemistry from Yonsei University in 1980. In 1985 he completed a PhD in biochemistry at Purdue University, and from 1986 to 1988 he was a researcher at MIT.

He returned to South Korea in 1988 to work in biotechnology research. In 1998 he became head of development at LG Chem and later held leadership roles in its life sciences division. He also worked at Hanwha Petrochemical and became managing director of Dream Pharma in 2006.

Park's career has followed one thread from the laboratory to the boardroom. Years of research work at universities and large Korean chemical groups gave him the scientific grounding to build a company around a single platform technology.

How Park Soon-jae made his money

Park founded Alteogen in 2008 with his wife, Chung Hye-shin, a fellow Purdue PhD who served as the company's chief scientific officer and later chief strategy officer until 2023. He became CEO around 2010 or 2011, and by June 2024 he held a 19.2% stake in the company.

Alteogen is best known for ALT-B4, an enzyme technology that lets drugs be given as an injection under the skin instead of through an IV drip. In 2024 the company said Merck had agreed to license ALT-B4 for its cancer drug pembrolizumab, and Alteogen shares soared 25% in a day.

The deal turned Alteogen into a market favorite. By December 2024 it had the largest market capitalization on the KOSDAQ exchange, and Park became a billionaire during that surge. He has told shareholders he would not sell his own shares.

How Forbes has valued Park Soon-jae

Forbes first counted Park as a billionaire in 2024, at $1.5 billion. His figure rose to $2.6 billion in 2025 and to $2.9 billion on the 2026 World's Billionaires List as Alteogen's stock kept climbing.

As of October 20, 2026, the Forbes real-time billionaires tracker showed $2.3 billion. Because almost all of his wealth sits in Alteogen shares, his estimate tends to move with the stock. He and his wife have a daughter, Park Su-min, who also holds a small stake in the company.