Billionaire Profile
James Clark
Global Rank
#519

Image: Wildman, John R. (1785) | Public domain | via Wikimedia Commons

James Clark

CEO, Netscape
UNITED STATES
Real-Time Net Worth
$7.476B
Estimated based on Netscape stock value as of April 20, 2026
+0.06% (24h)
Age
82
Source
Netscape, investments
Industry
technology
Citizenship
UNITED STATES

Biography

James Henry Clark, born March 23, 1944, is an American entrepreneur and computer scientist celebrated for founding several significant Silicon Valley technology companies. With a current estimated net worth of $7.3 billion, his wealth primarily stems from his ventures in Netscape and strategic investments. His career began in academia, earning a Ph.D. in computer science, before transitioning to industry and co-founding Silicon Graphics, Inc. and Netscape Communications. The latter revolutionized internet access with its Navigator web browser, catapulting the internet into the mainstream. Clark's foresight in technology has positioned him as a key figure in the tech industry's evolution. He is married to former model Kristy Hinze and has four children.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

James Henry Clark was born on March 23, 1944, in Plainview, Texas. At the age of 16, he dropped out of high school and spent four years in the U.S. Navy, where he gained exposure to electronics. He later pursued higher education, earning a bachelor's and master's degree in physics from the University of New Orleans. He then completed a Ph.D. in computer science from the University of Utah in 1974.

Rise to Success

After completing his doctorate, Clark worked at the New York Institute of Technology's Computer Graphics Lab, but was fired due to insubordination. He then served as an assistant professor at the University of California, Santa Cruz, followed by an associate professorship at Stanford University. In 1982, Clark, along with several Stanford graduate students, founded Silicon Graphics (SGI), which became a leader in 3D imaging. He left SGI in 1994 and co-founded Netscape Communications with Marc Andreessen. The launch of Netscape Navigator, the company's web browser, was instrumental in the Internet boom of the mid-to-late 1990s. Netscape's IPO in August 1995 was a major success, with the stock price soaring.

Key Business Strategies

Clark's success stems from his ability to identify and capitalize on emerging technologies. His founding of Netscape was a strategic move that brought the internet to the masses. He understood the importance of user-friendly interfaces and the potential of the World Wide Web. He later founded Healtheon (WebMD), among other ventures. His business strategy involved not only creating innovative products but also assembling talented teams and securing funding at critical moments. Moreover, he had an astute sense for when to exit or sell his businesses at opportune times, as demonstrated by his sale of Netscape to AOL.

Philanthropy

Clark has contributed to educational institutions, including Stanford University, where he pledged $150 million for the James H. Clark Center for Biomedical Engineering.

Career Milestones

1981

Founded Silicon Graphics, Inc.

Co-founded Silicon Graphics, a company that became a leader in 3D imaging and visual effects.

1994

Co-founded Netscape Communications

Co-founded Netscape, a company that developed the Netscape Navigator web browser, which was instrumental in the early growth of the internet.

1996

Founded Healtheon

Founded Healtheon, later WebMD, an internet-based healthcare service.

Philanthropy & Social Impact

Education

James H. Clark Center for Biomedical Engineering

$150M

Pledged $150 million to Stanford University for the construction of the James H. Clark Center for Biomedical Engineering and related programs.