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Rank 406 of 3,368

James H. Clark net worth

James H. Clark's net worth is estimated at $9 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. The fortune comes mainly from Netscape, Silicon Graphics.

Industry
Technology
Age
82
Self-made
Yes
City
Palm Beach
Source of wealth
Netscape, Silicon Graphics

Latest estimate

$9.0B

As of 15 Oct 2026, Forbes Real-Time Billionaires

+$1.8B

+25.5%

vs Jan 2025

History
Technology setting, the industry behind this fortune
Technology, the industry behind this fortune. Illustration, not a photo of James H. Clark.

James's net worth over time

2 dated estimates since 2025

$0 $2B $5B $7B $10B 2025 2026 $7.2B, 2025, Forbes $9.0B, 15 Oct 2026, Forbes Real-Time Billionaires
As ofNet worthSource
15 Oct 2026$9.0B Forbes Real-Time Billionaires
2025$7.2B Forbes

About James H. Clark

James H. Clark (United States) has 2 dated net worth estimates in the public record, the latest $9 billion as of 15 Oct 2026 from Forbes Real-Time Billionaires. The fortune is tied to Netscape, Silicon Graphics, which we classify under technology. James was born in 1944. The earliest estimate we hold, $7.2 billion, is dated 2025. That places James at number 406 in the current ranking.

Companies linked to James in the public record: Netscape, Silicon Graphics, Harris myCFO, Healtheon, Stanford University.

Sources

The description is written by BillionaireList editors from public facts. How estimates are made: methodology.

About James H. Clark, common questions

How much is James H. Clark worth?
James H. Clark's net worth is estimated at $9 billion as of 15 Oct 2026, according to Forbes Real-Time Billionaires. That places James at number 406 in the BillionaireList ranking.

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